Android ... My application doesn't launch?

Android ... My application doesn't launch? - java

So, I am trying to do an application which gives a user the ability to keep track of the score and number of fouls of two different teams playing football
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-medium"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:text="Team A"
android:textColor="#616161"
android:textSize="14sp" />
<TextView
android:id="#+id/team_a_goal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="24dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:text="0"
android:textColor="#000000"
android:textSize="56sp" />
<TextView
android:id="#+id/team_a_foul"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="24dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:text="0"
android:textColor="#000000"
android:textSize="56sp" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:layout_marginBottom="8dp"
android:onClick="addGoalForTeamA"
android:text="GOAL" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:layout_marginBottom="8dp"
android:onClick="addFoulForTeamA"
android:text="FOUL" />
</LinearLayout>
<view
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#android:color/darker_gray" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-medium"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:text="Team B"
android:textColor="#616161"
android:textSize="14sp" />
<TextView
android:id="#+id/team_b_goal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="24dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:text="0"
android:textColor="#000000"
android:textSize="56sp" />
<TextView
android:id="#+id/team_b_foul"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:gravity="center_horizontal"
android:padding="4dp"
android:paddingBottom="24dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:text="0"
android:textColor="#000000"
android:textSize="56sp" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:layout_marginBottom="8dp"
android:onClick="addGoalForTeamB"
android:text="GOAL" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:layout_marginBottom="8dp"
android:onClick="addFoulForTeamB"
android:text="FOUL" />
</LinearLayout>
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="32dp"
android:onClick="Reset"
android:text="Reset" />
and java code
package com.example.android.scorekeeper;
import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
int goalTeamA = 0;
int foulTeamA = 0;
int goalTeamB = 0;
int foulTeamB = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void addGoalForTeamA(View view) {
goalTeamA = +1;
displayGoalTeamA(goalTeamA);
}
public void addFoulForTeamA(View view) {
foulTeamA = +1;
displayFoulTeamA(foulTeamA);
}
public void addGoalForTeamB(View view) {
goalTeamB = +1;
displayGoalTeamB(goalTeamB);
}
public void addFoulForTeamB(View view) {
foulTeamB = +1;
displayFoulTeamB(foulTeamB);
}
public void Reset(View view) {
goalTeamA = 0;
foulTeamA = 0;
goalTeamB = 0;
foulTeamB = 0;
displayGoalTeamA(goalTeamA);
displayFoulTeamA(foulTeamA);
displayGoalTeamB(goalTeamB);
displayFoulTeamB(foulTeamB);
}
public void displayGoalTeamA(int score) {
TextView scoreView = findViewById(R.id.team_a_goal);
scoreView.setText(String.valueOf(score));
}
public void displayFoulTeamA(int score) {
TextView scoreView = findViewById(R.id.team_a_foul);
scoreView.setText(String.valueOf(score));
}
public void displayGoalTeamB(int score) {
TextView scoreView = findViewById(R.id.team_b_goal);
scoreView.setText(String.valueOf(score));
}
public void displayFoulTeamB(int score) {
TextView scoreView = findViewById(R.id.team_b_foul);
scoreView.setText(String.valueOf(score));
} }
The code seems fine to me and Android Studio doesn't report any errors but it did't launch on my android

make sure you have added your activity to your manifest file
<activity
android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

Related

How to add a history to calculator?

How do I add a history for a calculator in android studio/java? I need it to be only 3 lines of history before it disapears. How do I also show the entire calculation, and not just print out the result?
first one is where i store all my functions, and the 2nd one is primarily just to customize all the calculator buttons, etc.
import static com.example.calculator.R.string.display;
import androidx.appcompat.app.AppCompatActivity;
import org.mariuszgromada.math.mxparser.*;
import android.os.Bundle;
import android.text.SpannableStringBuilder;
import android.view.View;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity {
private EditText display;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
display = findViewById(R.id.input);
display.setShowSoftInputOnFocus(false);
display.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (getString(R.string.display).equals(display.getText().toString())){
display.setText("");
}
}
});
}
private void updateText(String strToAdd){
String oldStr = display.getText().toString();
int cursorPos = display.getSelectionStart();
String leftStr = oldStr.substring(0, cursorPos); //code that prints the numbers on the screen
String rightStr = oldStr.substring(cursorPos);
if (getString(R.string.display).equals(display.getText().toString())){
display.setText(strToAdd);
display.setSelection(cursorPos + 1);
}
else{
display.setText(String.format("%s%s%s", leftStr, strToAdd, rightStr));
display.setSelection(cursorPos + 1); //moves cursor position to one right
}
}
public void zeroBTN(View view){
updateText("0");
}
public void oneBTN(View view){
updateText("1");
}
public void twoBTN(View view){
updateText("2");
}
public void threeBTN(View view){
updateText("3");
}
public void fourBTN(View view){
updateText("4");
}
public void fiveBTN(View view){
updateText("5");
}
public void sixBTN(View view){
updateText("6");
}
public void sevenBTN(View view){
updateText("7");
}
public void eightBTN(View view){
updateText("8");
}
public void nineBTN(View view){
updateText("9");
}
public void multiplyBTN(View view){
updateText("×");
}
public void divideBTN(View view){
updateText("÷");
}
public void subtractBTN(View view){
updateText("-");
}
public void addBTN(View view){
updateText("+");
}
public void clearBTN(View view){
display.setText("");
}
public void expBTN(View view){
updateText("^");
}
public void parenthesesBTN(View view){
int cursorPos = display.getSelectionStart();
int openPar = 0;
int closedPar = 0;
int textLength = display.getText().length();
for (int i = 0; i < cursorPos; i++){
if (display.getText().toString().substring(i, i+1).equals("(")){
openPar += 1;
}
if (display.getText().toString().substring(i, i+1).equals(")")){
closedPar += 1;
}
}
if (openPar == closedPar || display.getText().toString().substring(textLength - 1, textLength).equals("(")){
updateText("(");
display.setSelection(cursorPos + 1);
}
else if (closedPar < openPar && !display.getText().toString().substring(textLength - 1, textLength).equals("(")){
updateText(")");
}
display.setSelection(cursorPos + 1);
}
public void plusMinusBTN(View view){
updateText("thx for using my calc, you found an easter egg :)");
}
public void decimalBTN(View view){
updateText(".");
}
public void equalBTN(View view){
String userExp = display.getText().toString();
userExp = userExp.replaceAll("÷", "/");
userExp = userExp.replaceAll("×", "*");
Expression exp = new Expression(userExp);
String result = String.valueOf(exp.calculate());
display.setText(result);
display.setSelection(result.length());
}
public void backspaceBTN(View view){
int cursorPos = display.getSelectionStart();
int textLen = display.getText().length();
if (cursorPos != 0 && textLen !=0){ //code to delete stuff
SpannableStringBuilder selection = (SpannableStringBuilder) display.getText();
selection.replace(cursorPos - 1, cursorPos, "");
display.setSelection(cursorPos - 1);
}
}
}
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TableLayout
android:id="#+id/tableLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="#+id/input"
app:layout_constraintVertical_bias="0.95"
tools:layout_editor_absoluteX="1dp">
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/clearBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="clearBTN"
android:text="#string/clear"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/parenthesesBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="parenthesesBTN"
android:text="#string/parentheses"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/exponentBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="expBTN"
android:text="#string/exponent"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/divideBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="divideBTN"
android:text="#string/divide"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/sevenBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="sevenBTN"
android:text="#string/seven"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/eightBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="eightBTN"
android:text="#string/eight"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/nineBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="nineBTN"
android:text="#string/nine"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/multiplyBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="multiplyBTN"
android:text="#string/multiply"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/fourBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="fourBTN"
android:text="#string/four"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/fiveBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="fiveBTN"
android:text="#string/five"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/sixBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="sixBTN"
android:text="#string/six"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/subtractBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="subtractBTN"
android:text="#string/subtract"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/one"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="oneBTN"
android:text="#string/one"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/two"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="twoBTN"
android:text="#string/two"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/three"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="threeBTN"
android:text="#string/three"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/add"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="addBTN"
android:text="#string/add"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/plusMinusBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="plusMinusBTN"
android:text="#string/plusMinus"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/zeroBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="zeroBTN"
android:text="#string/zero"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/pointBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="decimalBTN"
android:text="#string/point"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
<Button
android:id="#+id/equalsBTN"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#drawable/circle"
android:onClick="equalBTN"
android:text="#string/equals"
android:textColor="#000000"
android:textSize="24sp"
tools:ignore="UsingOnClickInXml" />
</TableRow>
</TableLayout>
<EditText
android:id="#+id/input"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:text="#string/display"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:autofillHints="false"
android:inputType="none"
android:textSize="36sp"
android:textAlignment="textEnd"
tools:ignore="LabelFor" />
<ImageButton
android:id="#+id/backspace"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:background="#drawable/circle"
android:contentDescription="#string/backspace"
android:onClick="backspaceBTN"
app:layout_constraintBottom_toTopOf="#+id/tableLayout2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:srcCompat="#drawable/backspace"
tools:ignore="UsingOnClickInXml" />
</androidx.constraintlayout.widget.ConstraintLayout>

Android TextView OnClick-Event doesn't work

I have to program a TicTacToe app:
This is the code of the activity_main.xml:
(It's a simple 3x3 field of TextViews on a black background)
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000"
android:screenOrientation="portrait"
tools:context=".MainActivity">
<androidx.gridlayout.widget.GridLayout
android:layout_width="294dp"
android:layout_height="286dp"
android:background="#000000"
app:layout_constraintBottom_toTopOf="#+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView">
<TextView
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android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_center_left"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="0"
app:layout_row="1" />
<TextView
android:id="#+id/tictactoe_center_right"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_center_right"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="2"
app:layout_row="1" />
<TextView
android:id="#+id/tictactoe_center_center"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_center_center"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="1"
app:layout_row="1" />
<TextView
android:id="#+id/tictactoe_top_left"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:ems="10"
android:enabled="false"
android:focusable="true"
android:onClick="click_top_left"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="0"
app:layout_row="0"
tools:text="#string/game_playersymbol_x" />
<TextView
android:id="#+id/tictactoe_top_center"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_top_center"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold" />
<TextView
android:id="#+id/tictactoe_top_right"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_top_right"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold" />
<TextView
android:id="#+id/tictactoe_bottom_left"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_bottom_left"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="0"
app:layout_row="2" />
<TextView
android:id="#+id/tictactoe_bottom_right"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_bottom_right"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="2"
app:layout_row="2" />
<TextView
android:id="#+id/tictactoe_bottom_center"
android:layout_width="97dp"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:editable="false"
android:ems="10"
android:enabled="false"
android:onClick="click_bottom_center"
android:text="#string/game_playersymbol_x"
android:textAlignment="center"
android:textColor="#FFFFFF"
android:textSize="70sp"
android:textStyle="bold"
app:layout_column="1"
app:layout_row="2" />
</androidx.gridlayout.widget.GridLayout>
<Button
android:id="#+id/button"
android:layout_width="213dp"
android:layout_height="61dp"
android:layout_marginBottom="56dp"
android:background="#drawable/roundbutton"
android:text="#string/menu_play_singleplayer"
android:textColor="#FFFFFF"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/app_name"
android:textColor="#979797"
android:textSize="50sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.066" />
</androidx.constraintlayout.widget.ConstraintLayout>
This is the code of the MainActivity.java:
package com.example.tictactoe;
import androidx.appcompat.app.AppCompatActivity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private int counter = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSupportActionBar().hide();
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
public void click_top_left(View v) { click_action((TextView)findViewById(R.id.tictactoe_top_left)); }
public void click_top_center(View v) { click_action((TextView)findViewById(R.id.tictactoe_top_center)); }
public void click_top_right(View v) { click_action((TextView)findViewById(R.id.tictactoe_top_right)); }
public void click_center_left(View v) { click_action((TextView)findViewById(R.id.tictactoe_center_left)); }
public void click_center_center(View v) { click_action((TextView)findViewById(R.id.tictactoe_center_center)); }
public void click_center_right(View v) { click_action((TextView)findViewById(R.id.tictactoe_center_right)); }
public void click_bottom_left(View v) { click_action((TextView)findViewById(R.id.tictactoe_bottom_left)); }
public void click_bottom_center(View v) { click_action((TextView)findViewById(R.id.tictactoe_bottom_center)); }
public void click_bottom_right(View v) { click_action((TextView)findViewById(R.id.tictactoe_bottom_right)); }
public void click_action(TextView tv) {
if ((counter%2)==0)
tv.setText("O");
else
tv.setText("X");
counter++;
}
}
I've set the android:clickable to true.
I've set a onclick listener.
I simply cannot find my mistake...
I would appreciate any kind of help!

You have set to all the TextViews:
android:enabled="false"
Why?
Change it to:
android:enabled="true"

first give an id to your textview then Define a Sample like Textview textview find it in java and use setOnClickListener() in onCreate method just like below.It will definitely works.
textveiw.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) { }});

input and output on android studio 2.3

This is kind of beginner/noob question, but I want to use InputActivity.java and activity_input.xml as the one that the user use to input data. The code for the input are as shown below:
InputActivity.java
package com.lukmanyahoo.denny.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class InputActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
}
//Send data to HasilActivity.java
}
activity_input.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.lukmanyahoo.denny.myapplication.InputActivity">
<EditText
android:id="#+id/editText"
android:layout_width="569dp"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginLeft="636dp"
android:layout_marginStart="16dp"
android:layout_marginTop="15dp"
android:ems="10"
android:hint="#string/umur"
android:inputType="number"
app:layout_constraintBottom_toTopOf="#+id/editText"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="DuplicateIds,NotSibling,RtlHardcoded"
app:layout_constraintVertical_bias="0.251" />
<EditText
android:id="#+id/editText2"
android:layout_width="569dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:ems="10"
android:hint="#string/daerah"
android:inputType="textPersonName"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#+id/editText"
tools:ignore="MissingConstraints,RtlHardcoded" />
<TextView
android:id="#+id/textView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:text="#string/jurusan"
android:textSize="30sp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
tools:ignore="MissingConstraints"
android:layout_marginTop="32dp"
app:layout_constraintTop_toBottomOf="#+id/editText2"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp" />
<RadioGroup
android:id="#+id/radioGroup"
android:layout_width="569dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView"
tools:ignore="RtlHardcoded">
<RadioButton
android:id="#+id/radioButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/informatika" />
<RadioButton
android:id="#+id/radioButton2"
android:layout_width="569dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/sistem_informasi"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="178dp" />
</RadioGroup>
<Button
android:id="#+id/button3"
android:layout_width="569dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:text="#string/kirim"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#+id/radioGroup"
tools:ignore="RtlHardcoded" />
</android.support.constraint.ConstraintLayout>
The code for the output part of my application are shown below:
HasilActivity.java
package com.lukmanyahoo.denny.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class HasilActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hasil);
}
}
activity_hasil.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.lukmanyahoo.denny.myapplication.HasilActivity">
<TableLayout
android:layout_width="568dp"
android:layout_height="791dp"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/umur"
android:textStyle="bold" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" "
tools:layout_editor_absoluteX="58dp"
tools:layout_editor_absoluteY="169dp" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/daerah"
android:textStyle="bold" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" " />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/jurusan"
android:textStyle="bold" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" " />
</TableRow>
</TableLayout>
</android.support.constraint.ConstraintLayout>
Thanks for taking time answering this. I am new in giving question here.

In your InputActivity
public class InputActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
}
//Send data to HasilActivity.java
Intent intent = new Intent(this, HasilActivity.class);
// put your data here
intent.putExtra("value_one", editText.getText().toString().trim());
intent.putExtra("value_two", editText2.getText().toString().trim());
startActivity(intent)
}
and in your HasilActivity
public class HasilActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hasil);
String value = getIntent().getStringExtra("value_one");
String value2 = getIntent().getStringExtra("value_two");
}
}
that is :)

The keyboard is coming upon the EditText field & thus hiding it. How to prevent the keyboard from hiding the EditText field?

My EditText is at the bottom of screen, so when I'm tapping on it to edit it, the keyboard is hiding it. I want that when I tap on EditText, the keyboard should remain below it & should not hide it.
Here's the link to the screenshot showing EditText before tapping on it: http://imgur.com/cgme1HT
Here's the link to the screenshot after tapping on EditText (the EditText field is below the keyboard now): http://imgur.com/nloFrkn
Here's my SettingUpUserProfile.java file's code:
public class SettingUpUserProfile extends AppCompatActivity {
public static final int TAKE_PHOTO_REQUEST = 0;
public static final int PICK_PHOTO_REQUEST = 1;
private static final int RESULT_LOAD_IMG = 2;
String imgDecodableString;
protected ImageView userProfilePicture;
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting_up_user_profile);
userProfilePicture = (ImageView) findViewById(R.id.userProfilePicture);
userProfilePicture.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(SettingUpUserProfile.this);
builder.setTitle(null);
builder.setItems(R.array.pickImage_options, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int position) {
switch (position) {
case 0:
Intent intentCaptureFromCamera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intentCaptureFromCamera, TAKE_PHOTO_REQUEST);
break;
case 1:
Intent chooseFromGalley = new Intent(Intent.ACTION_GET_CONTENT);
chooseFromGalley.setType("image/*");
startActivityForResult(chooseFromGalley, PICK_PHOTO_REQUEST);
break;
}
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
// When an Image is picked
Uri uri = data.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
// Log.d(TAG, String.valueOf(bitmap));
ImageView imageView = (ImageView) findViewById(R.id.userProfilePicture);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}
}
}
Here's my activity_setting_up_user_profile.xml file's code:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/light_purple"
tools:context="com.abc.xyz.SettingUpUserProfile">
<TextView
android:id="#+id/settingUpUserProfileText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:text="#string/settingUpUserProfileText1"
android:textColor="#color/white"
android:textStyle="bold"
android:textSize="30sp"
android:gravity="center_horizontal|center_vertical"/>
<ImageView
android:id="#+id/userProfilePicture"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_below="#+id/settingUpUserProfileText1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="100dp"
android:clickable="true"
android:src="#drawable/ic_face_white_48dp" />
<TextView
android:id="#+id/settingUpUserProfileText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userProfilePicture"
android:layout_marginTop="5dp"
android:text="#string/settingUpUserProfileText2"
android:textColor="#color/white"
android:textSize="15sp"
android:gravity="center_horizontal|center_vertical"/>
<EditText
android:id="#+id/userName"
android:background="#drawable/phone_number_edit_text_design"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText2"
android:layout_marginTop="80dp"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginRight="10dp"
android:layout_marginEnd="10dp"
android:gravity="center_horizontal|center_vertical"
android:hint="#string/hint_userName"
android:textColor="#color/white"
android:textColorHint="#E0E0E0"
android:textCursorDrawable="#null"
android:inputType="textPersonName"/>
<Button
android:id="#+id/buttonAllSet"
android:background="#color/white"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userName"
android:layout_marginTop="20dp"
android:text="#string/button_allSet"
android:textStyle="bold"
android:textColor="#color/light_purple"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:gravity="center_horizontal|center_vertical"/>
</RelativeLayout>
I really have no clue about what to do here!
Please let me know.
I'm new to StackOverflow, so please cooperate.
Thanks in advance.

I had the same issue where the softkeyboard was on top of the EditText views which were placed on the bottom of the screen. I was able to find a solution by adding a single line to my AndroidManifest.xml file's relevant activity.
Put layout inside a ScrollView.
android:windowSoftInputMode="adjustResize|stateHidden"
This is how the whole activity tag looks like:
<activity
android:name="com.my.MainActivity"
android:screenOrientation="portrait"
android:label="#string/title_activity_main"
android:windowSoftInputMode="adjustResize|stateHidden" >
</activity>
Here the most important value is the adjustResize. This will shift the whole UI up to give room for the softkeyboard.

Simply use a ScrollView as the parent view in your xml file.

Options-1
Try using android:windowSoftInputMode="adjustPan" in activity in AndroidManifest.xml
Options-2
Use ScrollView as parent in xml. Replace your xml with this:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.abc.xyz.SettingUpUserProfile" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/light_purple">
<TextView
android:id="#+id/settingUpUserProfileText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:text="#string/settingUpUserProfileText1"
android:textColor="#color/white"
android:textStyle="bold"
android:textSize="30sp"
android:gravity="center_horizontal|center_vertical"/>
<ImageView
android:id="#+id/userProfilePicture"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_below="#+id/settingUpUserProfileText1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="100dp"
android:clickable="true"
android:src="#drawable/ic_face_white_48dp" />
<TextView
android:id="#+id/settingUpUserProfileText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userProfilePicture"
android:layout_marginTop="5dp"
android:text="#string/settingUpUserProfileText2"
android:textColor="#color/white"
android:textSize="15sp"
android:gravity="center_horizontal|center_vertical"/>
<EditText
android:id="#+id/userName"
android:background="#drawable/phone_number_edit_text_design"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText2"
android:layout_marginTop="80dp"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginRight="10dp"
android:layout_marginEnd="10dp"
android:gravity="center_horizontal|center_vertical"
android:hint="#string/hint_userName"
android:textColor="#color/white"
android:textColorHint="#E0E0E0"
android:textCursorDrawable="#null"
android:inputType="textPersonName"/>
<Button
android:id="#+id/buttonAllSet"
android:background="#color/white"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userName"
android:layout_marginTop="20dp"
android:text="#string/button_allSet"
android:textStyle="bold"
android:textColor="#color/light_purple"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:gravity="center_horizontal|center_vertical"/>
</RelativeLayout>
</ScrollView>

Thank you all for your answers.
I solved the problem by changing my activity_setting_up_user_profile.xml file's code to this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/light_purple"
tools:context="com.abc.xyz.SettingUpUserProfile" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/settingUpUserProfileText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:gravity="center_horizontal|center_vertical"
android:text="#string/settingUpUserProfileText1"
android:textColor="#color/white"
android:textSize="30sp"
android:textStyle="bold" />
<ImageView
android:id="#+id/userProfilePicture"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_below="#+id/settingUpUserProfileText1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="100dp"
android:clickable="true"
android:src="#drawable/ic_face_white_48dp" />
<TextView
android:id="#+id/settingUpUserProfileText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userProfilePicture"
android:layout_marginTop="5dp"
android:gravity="center_horizontal|center_vertical"
android:text="#string/settingUpUserProfileText2"
android:textColor="#color/white"
android:textSize="15sp" />
<EditText
android:id="#+id/userName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText2"
android:layout_marginEnd="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="80dp"
android:background="#drawable/phone_number_edit_text_design"
android:gravity="center_horizontal|center_vertical"
android:hint="#string/hint_userName"
android:inputType="textPersonName"
android:textColor="#color/white"
android:textColorHint="#E0E0E0"
android:textCursorDrawable="#null" />
<Button
android:id="#+id/buttonAllSet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userName"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:layout_marginTop="20dp"
android:background="#color/white"
android:gravity="center_horizontal|center_vertical"
android:text="#string/button_allSet"
android:textColor="#color/light_purple"
android:textStyle="bold" />
</RelativeLayout>
</ScrollView>
</LinearLayout>
This was COOL!

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context="com.abc.xyz.SettingUpUserProfile" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/light_purple" >
<TextView
android:id="#+id/settingUpUserProfileText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:gravity="center_horizontal|center_vertical"
android:text="#string/settingUpUserProfileText1"
android:textColor="#color/white"
android:textSize="30sp"
android:textStyle="bold" />
<ImageView
android:id="#+id/userProfilePicture"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_below="#+id/settingUpUserProfileText1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="100dp"
android:clickable="true"
android:src="#drawable/ic_face_white_48dp" />
<TextView
android:id="#+id/settingUpUserProfileText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userProfilePicture"
android:layout_marginTop="5dp"
android:gravity="center_horizontal|center_vertical"
android:text="#string/settingUpUserProfileText2"
android:textColor="#color/white"
android:textSize="15sp" />
<EditText
android:id="#+id/userName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText2"
android:layout_marginEnd="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="80dp"
android:background="#drawable/phone_number_edit_text_design"
android:gravity="center_horizontal|center_vertical"
android:hint="#string/hint_userName"
android:inputType="textPersonName"
android:textColor="#color/white"
android:textColorHint="#E0E0E0"
android:textCursorDrawable="#null" />
<Button
android:id="#+id/buttonAllSet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userName"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:layout_marginTop="20dp"
android:background="#color/white"
android:gravity="center_horizontal|center_vertical"
android:text="#string/button_allSet"
android:textColor="#color/light_purple"
android:textStyle="bold" />
</RelativeLayout>
</LinearLayout>
</ScrollView>

Display Currently Connected SSID in Android

I'd like to capture the currently connected SSID - and display it in a TextView - how can this be done?
From what I can gather I'll need to use the following:
public void run() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
String nameEt = info.getSSID();
}
But when I attempt to implement it - I cannot seem to display it on the screen.
JAVA:
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.ViewGroup;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.TextView;
import android.widget.TimePicker;
import java.text.DecimalFormat;
public class AddEditDevice extends Activity {
private long rowID;
private EditText nameEt;
private EditText capEt;
private EditText codeEt;
private TimePicker timeEt;
private TextView ssid;
// DecimalFormat df = new DecimalFormat ("00");
// public String minutes = df.format(min);
// #Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_country);
nameEt = (EditText) findViewById(R.id.nameEdit);
capEt = (EditText) findViewById(R.id.capEdit);
codeEt = (EditText) findViewById(R.id.codeEdit);
timeEt = (TimePicker) findViewById(R.id.timeEdit);
Bundle extras = getIntent().getExtras();
if (extras != null) {
rowID = extras.getLong("row_id");
nameEt.setText(extras.getString("name"));
capEt.setText(extras.getString("cap"));
codeEt.setText(extras.getString("code"));
String time = extras.getString("time");
String[] parts = time.split(":");
timeEt.setCurrentHour(Integer.valueOf(parts[0]));
timeEt.setCurrentMinute(Integer.valueOf(parts[1]));
timeEt.setIs24HourView(false);
}
Button saveButton = (Button) findViewById(R.id.saveBtn);
saveButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (nameEt.getText().length() != 0) {
AsyncTask<Object, Object, Object> saveContactTask =
new AsyncTask<Object, Object, Object>() {
#Override
protected Object doInBackground(Object... params) {
saveContact();
return null;
}
#Override
protected void onPostExecute(Object result) {
finish();
}
};
saveContactTask.execute((Object[]) null);
} else {
AlertDialog.Builder alert = new AlertDialog.Builder(
AddEditDevice.this);
alert.setTitle(R.string.errorTitle);
alert.setMessage(R.string.errorMessage);
alert.setPositiveButton(R.string.errorButton, null);
alert.show();
}
}
});
}
public void run() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
String ssid = info.getSSID();
TextView ssidTextView = (TextView) findViewById(R.id.wifiSSID);
ssidTextView.setText(ssid);
}
private void saveContact() {
DatabaseConnector dbConnector = new DatabaseConnector(this);
if (getIntent().getExtras() == null) {
dbConnector.insertContact(nameEt.getText().toString(), capEt
.getText().toString(), timeEt.getCurrentHour().toString() + ":"
+ timeEt.getCurrentMinute().toString(), codeEt.getText()
.toString());
} else {
dbConnector.updateContact(rowID, nameEt.getText().toString(), capEt
.getText().toString(), timeEt.getCurrentHour().toString() + ":"
+ timeEt.getCurrentMinute().toString(), codeEt.getText()
.toString());
}
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp" >
<EditText
android:id="#+id/nameEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="#string/name_hint"
android:imeOptions="actionNext"
android:inputType="textPersonName|textCapWords" />
<TextView
android:id="#+id/wifiSSID"
style="#style/StyleText"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/capEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="#string/cap_hint"
android:imeOptions="actionNext"
android:inputType="textPersonName|textCapWords" >
<requestFocus />
</EditText>
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Data Limit"
android:textAppearance="?android:textAppearanceMedium"
android:textColor="#ffffff" />
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="left"
android:text="Unlimited Data"
android:textColor="#ffffff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="right"
android:text="10MB"
android:textColor="#ffffff" />
</LinearLayout>
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bandwidth Limit"
android:textAppearance="?android:textAppearanceMedium"
android:textColor="#ffffff" />
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="left"
android:text="Unlimited Bandwidth"
android:textColor="#ffffff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="right"
android:text="10kbs"
android:textColor="#ffffff" />
</LinearLayout>
<EditText
android:id="#+id/codeEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:ems="10"
android:gravity="center"
android:hint="#string/code_hint"
android:imeOptions="actionNext"
android:inputType="textUri"
android:lines="1" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="Parental Controls"
android:textColor="#ffffff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="Block Streaming"
android:textColor="#ffffff" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ToggleButton
android:id="#+id/ToggleButton03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="ToggleButton" />
<ToggleButton
android:id="#+id/ToggleButton03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="ToggleButton" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="Block File Type/Size"
android:textColor="#ffffff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="Banned Music/Video"
android:textColor="#ffffff" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ToggleButton
android:id="#+id/ToggleButton02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="ToggleButton" />
<ToggleButton
android:id="#+id/ToggleButton02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="center"
android:text="ToggleButton" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:orientation="horizontal" >
</LinearLayout>
<TextView
android:id="#+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:textAppearanceSmall" />
<TextView
android:id="#+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="8dp"
android:layout_weight="1.0"
android:text="WiFi Time Limit"
android:textAppearance="?android:textAppearanceMedium"
android:textColor="#ffffff" />
<TimePicker
android:id="#+id/timeEdit"
android:layout_width="286dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1.0" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:orientation="horizontal" >
</LinearLayout>
<Button
android:id="#+id/saveBtn"
android:layout_width="199dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="15dp"
android:text="#string/save_btn" />
</LinearLayout>
</ScrollView>

You aren't calling run() from anywhere, and that method is not trying to update a textview. Try doing this in your run method.
TextView ssidTextView = (TextView) findViewById(R.id.<your_textview_id>);
ssidTextView.setText(nameEt);
And thenmake sure you call run() whenever you want to update the ssid in the TextView.

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