Show numeric keyboard with percent symbol

Show numeric keyboard with percent symbol - java

Is there an idea to show numeric soft keyboard with % symbol programmatically?
For example I need to enter 13% in EditText, so I need numbers and percent symbol and I don't want to show letters in soft keyboard.
The below code shows only numbers and .
editText.setRawInputType(InputType.TYPE_CLASS_NUMBER);
Any help is appreciated

For a customer i have allowed the '-' char within the layout.xml file (android:digits attribute, see bellow):
<EditText
android:id="#+id/searchText"
android:layout_width="match_parent"
android:layout_height="50dp"
android:maxLines="1"
android:layout_marginStart="8dp"
android:layout_marginTop="4dp"
android:layout_marginEnd="8dp"
android:hint="#string/searchRecord_inputHint"
android:imeOptions="actionSearch"
android:inputType="number"
android:digits="1234567890-"
android:text="#={viewModel.textToSearch}"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/switchSearchBy" />
Then, before searching i replace the '-' char occurences by '%'.
Of course, you must inform your users about this logic. Other solution is to build a simple Digits + '%' keyboard with buttons in a DialogFragment or even in your search layout directly.
Update: Integrated numeric keyboard view example
keyboard_num.xml
<?xml version="1.0" encoding="utf-8"?>
<layout 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">
<data>
<variable name="myCls"
type="com.sample.keyboard.KeyboardNumeric"/>
</data>
<merge>
<GridLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:stretchColumns="*"
android:columnCount="4"
android:rowCount="4">
<!--Row1-->
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_7"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="7"
android:layout_row="0"
android:layout_column="0"
android:onClick='#{(v)->myCls.onKey("7")}'/>
<Button
android:id="#+id/button_8"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="8"
android:layout_row="0"
android:layout_column="1"
android:onClick='#{(v)->myCls.onKey("8")}'/>
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_9"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="9"
android:layout_row="0"
android:layout_column="2"
android:onClick='#{(v)->myCls.onKey("9")}'/>
<Button
android:id="#+id/button_clr"
android:layout_width="120dp"
android:layout_height="64dp"
android:layout_row="0"
android:layout_column="3"
android:foreground="#drawable/ic_clear"
android:onClick='#{(v)->myCls.onClickClear()}'/>
<!--Row2-->
<Button
android:id="#+id/button_4"
android:layout_width="130dp"
android:layout_height="64dp"
android:layout_row="1"
android:layout_column="0"
android:text="4"
android:onClick='#{(v)->myCls.onKey("4")}'/>
<Button
android:id="#+id/button_5"
android:layout_width="130dp"
android:layout_height="64dp"
android:layout_row="1"
android:layout_column="1"
android:text="5"
android:onClick='#{(v)->myCls.onKey("5")}'/>
<Button
android:id="#+id/button_6"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="6"
android:layout_row="1"
android:layout_column="2"
android:onClick='#{(v)->myCls.onKey("6")}'/>
<Button
android:id="#+id/button_percent"
android:layout_width="120dp"
android:layout_height="64dp"
android:text="%"
app:autoSizeTextType="uniform"
app:autoSizeMinTextSize="12sp"
app:autoSizeMaxTextSize="50sp"
app:autoSizeStepGranularity="2sp"
android:textStyle="bold"
android:visibility="invisible"
tools:visibility="visible"
android:layout_row="1"
android:layout_column="3"
android:onClick='#{(v)->myCls.onKey("%")}'/>
<!--Row3-->
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_1"
android:layout_height="64dp"
android:layout_width="130dp"
android:text="1"
android:layout_row="2"
android:layout_column="0"
android:onClick='#{(v)->myCls.onKey("1")}' />
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_2"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="2"
android:layout_row="2"
android:layout_column="1"
android:onClick='#{(v)->myCls.onKey("2")}'/>
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_3"
android:layout_width="130dp"
android:layout_height="64dp"
android:layout_row="2"
android:layout_column="2"
android:text="3"
android:onClick='#{(v)->myCls.onKey("3")}'/>
<Button
style="#style/KeyboardPluStyleBlue"
android:id="#+id/button_enter"
android:layout_width="120dp"
android:layout_height="64dp"
android:layout_rowWeight="2"
android:layout_row="2"
android:layout_rowSpan="2"
android:layout_column="3"
android:foreground="#drawable/ic_enter"
android:onClick='#{(v)->myCls.onClickEnter()}' />
<!-- Row 4-->
<Button
style="#style/KeyboardPluStyle"
android:id="#+id/button_0"
android:layout_width="0dp"
android:layout_height="64dp"
android:text="0"
android:layout_row="3"
android:layout_column="0"
android:layout_columnSpan="2"
android:layout_columnWeight="1"
android:onClick='#{(v)->myCls.onKey("0")}'/>
<Button
style="#style/KeyboardPluStyleGray"
android:id="#+id/button_Cancel"
android:layout_width="130dp"
android:layout_height="64dp"
android:text="#string/adlb_dialog_cancel"
app:autoSizeTextType="uniform"
app:autoSizeMinTextSize="12sp"
app:autoSizeMaxTextSize="50sp"
app:autoSizeStepGranularity="2sp"
android:layout_row="3"
android:layout_column="2"
android:onClick='#{(v)->myCls.onClickCancel()}'/>
</GridLayout>
The KeyboardNumeric class:
package com.sample.keyboard;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.ExtractedTextRequest;
import android.view.inputmethod.InputConnection;
import android.widget.LinearLayout;
import com.averydennison.foodxpress.R;
import com.sample.keyboard.databinding.KeyboardQtyBinding;
public class KeyboardNumeric extends LinearLayout {
private KeyboardNumBinding binding;
// constructors
public KeyboardNumeric(Context context) {
this(context, null, 0);
}
public KeyboardNumeric(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public KeyboardNumeric(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if(isInEditMode())//Uses LayoutInflater if you are in Android studio
LayoutInflater.from(getContext()).inflate(R.layout.keyboard_num, this, true);
else
init(getContext());
}
// Our communication link to the EditText
InputConnection inputConnection;
void init(Context context) {
binding= KeyboardNumBinding.inflate(LayoutInflater.from(context),(ViewGroup)this,true);
binding.setMyCls(this);
}
/**
* Call this on a key press
* #param value Key text value as String
*/
public void onKey(String value){
inputConnection.commitText(value, 1);
}
/**
* Call this when Enter key is pressed
*/
public void onClickEnter(){
inputConnection.performEditorAction(EditorInfo.IME_ACTION_DONE);
}
/**
* Call this when Clear key is pressed
*/
public void onClickClear(){
CharSequence currentText = inputConnection.getExtractedText(new ExtractedTextRequest(), 0).text;
CharSequence beforCursorText = inputConnection.getTextBeforeCursor(currentText.length(), 0);
CharSequence afterCursorText = inputConnection.getTextAfterCursor(currentText.length(), 0);
inputConnection.deleteSurroundingText(beforCursorText.length(), afterCursorText.length());
}
/**
* Clall this when Cancel key is pressed
*/
public void onClickCancel(){
inputConnection.performEditorAction(EditorInfo.IME_ACTION_SEND);
}
/** The activity (or some parent or controller) must give us
* a reference to the current EditText's InputConnection
*/
public void setInputConnection(InputConnection ic) {
this.inputConnection = ic;
}
}
EditText that avoids Soft input keyboard to be shown:
package com.sample.views;
import android.content.Context;
import android.util.AttributeSet;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
public class CustomEditText extends
androidx.appcompat.widget.AppCompatEditText {
public CustomEditText(Context context) {
super(context);
}
public CustomEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
private boolean softInputEnabled=false;
public void setSoftInputAllowed(boolean enabled){
softInputEnabled=enabled;
}
public boolean getSoftInputAllowed(){
return softInputEnabled;
}
#Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
preventSofInputShown();
lockContextMenu();
}
private void lockContextMenu(){
this.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
#Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
//to keep the text selection capability available ( selection cursor)
return true;
}
#Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
//to prevent the menu from appearing
menu.clear();
return false;
}
#Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
#Override
public void onDestroyActionMode(ActionMode mode) {
}
});
}
#Override
public boolean performClick() {
/* synchronized (this){
//Find the currently focused view, so we can grab the correct window token from it.
View view = getRootView().findFocus();
//If no view currently has focus, create a new one, just so we can grab a window token from it
if (view == null)
view = this;
else
this.clearFocus();
InputMethodManager imm = (InputMethodManager)getContext().getSystemService(INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}*/
if(softInputEnabled)
return false;
else
return true;
}
private void preventSofInputShown(){
this.setOnTouchListener((v, event) -> {
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_UP:
return performClick();
default:
return false;
}
});
}
}
fragment_search.xml using CustomEditText + Keyboard:
<?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">
<com.sample.views.CustomEditText
android:id="#+id/txtQty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:clickable="true"
android:ems="10"
android:inputType="number"
android:longClickable="false"
android:textSize="40sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<com.sample.KeyboardNumeric
android:id="#+id/keyboardFull"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Finally, in your SearchFragment code (Attached to fragment_search.xml), just add this: (ie: in onCreate after inflating view)
// pass the InputConnection from the EditText to the keyboard
KeyboardNumeric keyboard = view.findViewById(R.id.keyboardFull);
EditText txtQty=view.findViewById(R.id.txtQty);
InputConnection ic = txtQty.onCreateInputConnection(new EditorInfo());
KeyboardQty.setInputConnection(ic);

Related

Link CheckBox with Checkable Interface for a ListView

For my Android application I have implemented a ListView that is populated by a Custom Adapter from BaseAdapter and a custom Layout for the rows.
Now i would like to make entries checkable by using the corresponding methods from ListView, like setItemChecked() or getCheckedItemCount().
I created a custom Layout class for the row layout that imlpements Checkable interface and retrieved the Button using findViewById to be able to access it inside the overridden methods from Checkable.
When long clicking on an entry in the list, the methods get invoked, but I get a NullpointerException, saying the CheckBox is referencing null:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.CompoundButton.setChecked(boolean)' on a null object reference
What is the appropriate way to link the checkbox of each entry inside a checkable Layout?
The checkable Layout class looks like this:
package com.lastname.name.arcadaobjecttracker;
import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.CheckBox;
import android.widget.Checkable;
import android.widget.LinearLayout;
//extend the Layout for the row view (each element in the listView) to add support for checkable rows (called by the listView methods like setItemChecked() etc.)
public class CheckableRowLayout extends LinearLayout implements Checkable
{
View view;
CheckBox checkBox;
public CheckableRowLayout(Context context)
{
super(context);
init(context);
}
public CheckableRowLayout(Context context, #Nullable AttributeSet attrs)
{
super(context, attrs);
init(context);
}
public CheckableRowLayout(Context context, #Nullable AttributeSet attrs, int defStyleAttr)
{
super(context, attrs, defStyleAttr);
init(context);
}
private void init(Context context)
{
checkBox = (CheckBox) findViewById(R.id.checkBox);
}
#Override
public void setChecked(boolean checked)
{
checkBox.setChecked(checked);
}
#Override
public boolean isChecked()
{
return checkBox.isChecked();
}
#Override
public void toggle()
{
checkBox.toggle();
}
}
The Layout consists of the following xml file with checkbox:
<?xml version="1.0" encoding="utf-8"?>
<com.lastname.name.arcadaobjecttracker.CheckableRowLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
<CheckBox
android:id="#+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:visibility="visible" />
<include
layout="#layout/list_view_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</com.lastname.name.arcadaobjecttracker.CheckableRowLayout>
which includes the rest of the layout:
<?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="wrap_content">
<ImageView
android:id="#+id/thumbnailImageView"
android:layout_width="80dp"
android:layout_height="45dp"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_videocam_black_24dp" />
<TextView
android:id="#+id/nameTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:singleLine="true"
android:text="Thisisaverylongnameforavideofilethatforsureexceedsthetextviewsize"
android:textColor="#color/black"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/thumbnailImageView"
app:layout_constraintTop_toTopOf="#+id/thumbnailImageView" />
<TextView
android:id="#+id/dateTextView"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:singleLine="true"
android:text="2018-01-01"
app:layout_constraintBottom_toBottomOf="#+id/thumbnailImageView"
app:layout_constraintStart_toEndOf="#+id/thumbnailImageView" />
<TextView
android:id="#+id/durationTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:singleLine="true"
android:text="Duration"
android:textAlignment="textStart"
app:layout_constraintBottom_toBottomOf="#+id/dateTextView"
app:layout_constraintStart_toEndOf="#+id/dateTextView" />
<TextView
android:id="#+id/hasTrackingTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="TextView"
android:textAlignment="viewEnd"
app:layout_constraintBottom_toBottomOf="#+id/durationTextView"
app:layout_constraintEnd_toEndOf="parent" />
<android.support.constraint.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_begin="20dp" />
<android.support.constraint.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.42" />
</android.support.constraint.ConstraintLayout>

Click a button and be directed to new activity, Android

MainActivity.Java
package com.example.drexsprint.login;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
Button b1,b2;
EditText ed1,ed2;
TextView tx1;
int counter = 3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button)findViewById(R.id.button);
ed1=(EditText)findViewById(R.id.editText);
ed2=(EditText)findViewById(R.id.editText2);
b2=(Button)findViewById(R.id.button2);
tx1=(TextView)findViewById(R.id.textView3);
tx1.setVisibility(View.GONE);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(ed1.getText().toString().equals("admin") &&
ed2.getText().toString().equals("1234")) {
Toast.makeText(getApplicationContext(), "Redirecting...",Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(getApplicationContext(), "Wrong Credentials",Toast.LENGTH_SHORT).show();
tx1.setVisibility(View.VISIBLE);
tx1.setBackgroundColor(Color.RED);
counter--;
tx1.setText(Integer.toString(counter));
if (counter == 0) {
b1.setEnabled(false);
}
}
}
});
b2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
}}
activity_main.xml
<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:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Arduino Security"
android:id="#+id/textView"
android:textColor="#ff7aff24"
android:textSize="35dp"
android:layout_centerHorizontal="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/editText"
android:hint="Enter Name"
android:focusable="true"
android:textColorHighlight="#ff7eff15"
android:textColorHint="#ffff25e6"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="#+id/editText2"
android:layout_below="#+id/editText"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="#+id/editText"
android:layout_alignEnd="#+id/editText"
android:textColorHint="#ffff299f"
android:hint="Password" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Attempts Left:"
android:id="#+id/textView2"
android:layout_below="#+id/editText2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="25dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/textView3"
android:layout_alignTop="#+id/textView2"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignBottom="#+id/textView2"
android:textSize="25dp"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="login"
android:id="#+id/button"
android:layout_alignParentBottom="true"
android:textColor="#ddec0d"
android:background="#0e17c2"
android:layout_alignLeft="#+id/textView"
android:layout_alignStart="#+id/textView"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel"
android:id="#+id/button2"
android:layout_alignParentBottom="true"
android:background="#df0c0c"
android:textColor="#0dca07"
android:layout_alignRight="#+id/textView"
android:layout_alignEnd="#+id/textView"
android:layout_centerHorizontal="true" />
<TextView
android:text="Please Login:"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView4"
android:textSize="35dp"
android:layout_below="#+id/textView"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp" />
</RelativeLayout>
Second Screen App
screen.Java
package com.example.drexsprint.login;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class Screen extends AppCompatActivity {
private WebView myWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myWebView = (WebView) findViewById(R.id.webView);
myWebView.getSettings().setDomStorageEnabled(true);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return false;
}
});
}
public void Left(View view) {
myWebView.loadUrl("http://admin:0000000AA#10.0.1.16/?button2");
}
public void Right (View view) {
myWebView.loadUrl("http://admin:0000000AA#10.0.1.16/?button3");
}
public void Temp (View view) {
myWebView.loadUrl("http://admin:0000000AA#10.0.1.16/?button1");
}
public void Hum (View view) {
myWebView.loadUrl("http://admin:0000000AA#10.0.1.16/button1");
}
public void Photo (View view) {
goToUrl("http://admin:0000000AA#10.0.1.6/image.jpg");
}
private void goToUrl(String url) {
Uri uriUrl = Uri.parse(url);
Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
startActivity(launchBrowser);
/** public void Photo (View view) {
// myWebView.loadUrl("http://admin:0000000AA#10.0.1.6/image.jpg");
}**/
}}
screen_layout
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/webView"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:visibility="invisible"
android:layout_above="#+id/button" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Rotate Left"
android:id="#+id/button"
android:onClick="Left"
android:backgroundTint="#0f50e8"
android:textColor="#f4d318"
android:layout_above="#+id/button4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_toStartOf="#+id/button5"
android:layout_alignRight="#+id/button4"
android:layout_alignEnd="#+id/button4" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Rotate Right"
android:id="#+id/button2"
android:onClick="Right"
android:backgroundTint="#0f50e8"
android:textColor="#f4d318"
android:layout_below="#+id/webView"
android:layout_alignRight="#+id/webView"
android:layout_alignEnd="#+id/webView"
android:layout_alignLeft="#+id/button3"
android:layout_alignStart="#+id/button3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Temp."
android:id="#+id/button3"
android:onClick="Temp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:backgroundTint="#369d7c"
android:textColor="#f4d318" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Hum."
android:id="#+id/button4"
android:onClick="Hum"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:backgroundTint="#369d7c"
android:textColor="#f4d318" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Take Photo"
android:id="#+id/button5"
android:onClick="Photo"
android:backgroundTint="#589d36"
android:textColor="#f4d318"
android:layout_below="#+id/webView"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true" />
<VideoView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/videoView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_above="#+id/webView"
android:background="#0a0a0a"
android:clickable="true"
android:contextClickable="true"
android:focusable="true" />
</RelativeLayout>
Okay! So I got two aplications, the first one is a login screen and the second one is a main menu of what the application should do, I want to find a way so that when a user insert the correct credentials and click on the Login button the app executes the second screen the main menu, how can i do this, Join the two apps together.
Wat i wanna achieve is on the the click of "Login Button" on the first app it Launches the Second app as a window! Thanks!! Kind of new in android any detailed help would be much appreciated.

Use startActivityForResult() to get the result from another activity.
By the help of android startActivityForResult() method, we can send information from one activity to another and vice-versa.
Intent intent=new Intent(this,Class2.class);
startActivityForResult(intent,10);

Android how to get a TextView reference id from within a custom created view?

I extended class View to create a custom view (at the moment the class might not make any practical sense - please ignore it ;>):
package com.example.splittheisland;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
public class BoardView extends View {
private Paint mPaintGrid = new Paint();
private Paint mPaintContour = new Paint();
public BoardView(Context c) {
super(c);
init();
}
public BoardView(Context c, AttributeSet attrs) {
super(c, attrs);
init();
}
public BoardView(Context c, AttributeSet attrs, int defStyles) {
this(c, attrs);
init();
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawLine(100,100,200,200+counter*100,mPaintContour);
}
private void init() {
mPaintGrid.setColor(Color.BLACK);
mPaintGrid.setStrokeWidth(2);
mPaintContour.setColor(Color.BLACK);
mPaintContour.setStrokeWidth(8);
mPaintGrid = new Paint();
mPaintContour = new Paint();
}
static int counter = 0;
#Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
counter++;
invalidate();
break;
case MotionEvent.ACTION_MOVE:
TextView textView = (TextView) findViewById(R.id.textView1);
textView.setText(Integer.toString(counter++));
break;
case MotionEvent.ACTION_UP:
counter--;
invalidate();
break;
}
return true;
}
}
and my activity_board.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/backrepeat"
tools:context="com.example.splittheisland.BoardActivity"
tools:ignore="MergeRootFrame" >
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/button_board1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/board_button1"
android:onClick="onClickButtonBoard1"
android:text="MORE"
android:textColor="#FFFFFF"
android:textSize="40dp" />
<Button
android:id="#+id/button_board2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/board_button2"
android:onClick="onClickButtonBoard2"
android:text="HINT"
android:textColor="#FFFFFF"
android:textSize="40dp" />
<Button
android:id="#+id/button_board3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/board_button3"
android:onClick="onClickButtonBoard3"
android:text="START"
android:textColor="#FFFFFF"
android:textSize="40dp" />
<Button
android:id="#+id/button_board4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/board_button4"
android:onClick="onClickButtonBoard4"
android:text="END"
android:textColor="#FFFFFF"
android:textSize="40dp" />
</LinearLayout>
<LinearLayout
android:id="#+id/LinearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/LinearLayout6"
android:layout_width="match_parent"
android:layout_height="88dp"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textColor="#FFFFFF"
android:textSize="30dp" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textColor="#FFFFFF"
android:textSize="30dp" />
</LinearLayout>
<com.example.splittheisland.BoardView
android:id="#+id/BoardView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
Unfortunately my program crashes... It is because:
TextView textView = (TextView) findViewById(R.id.textView1);
textView is null...
Why is that?

Your view can not find the TextView 'cause its not aware of the view hierarchy. Try implementing a setter/getter for the TextView inside your custom view, or consider something like:
LinearLayout llParent = (LinearLayout)getParent();
TextView textView2 = (TextView)llParent.findViewById(R.id.textView2);
I would prefer implementing a setter and using textView2 as a private member instead, so you don't have to get the reference every time.
Hope it helps.

mate this would never work.
BoardView doesnt contain textView1..
you can inflater TextView where you inflate the layout for example Activity or Fragment
since TextView and BoardView are siblings and not father/son relations it wont work.

I want to make number picker without dialog android

<NumberPicker
android:id="#+id/firstSeekBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="#drawable/image3" />
how can i get value of numberpicker and move like TimePickerDialog

Here is my number picker which I use for date and time:
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.NumberPicker;
#TargetApi(Build.VERSION_CODES.HONEYCOMB)//For backward-compability
public class NumberPickerMinMax extends NumberPicker
{
public NumberPickerMinMax(Context context)
{
super(context);
}
public NumberPickerMinMax(Context context, AttributeSet attrs)
{
super(context, attrs);
processAttributeSet(attrs);
}
public NumberPickerMinMax(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
processAttributeSet(attrs);
}
private void processAttributeSet(AttributeSet attrs)
{
//This method reads the parameters given in the xml file and sets the properties according to it
this.setMinValue(attrs.getAttributeIntValue(null, "min", 0));
this.setMaxValue(attrs.getAttributeIntValue(null, "max", 0));
}
}
Now you need to add 4 NumberPickerMinMax for each digit of time: HH:mm, here is my layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true" >
<com.evapp.customViews.NumberPickerMinMax
android:id="#+id/TimePickerView_hour2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
min="0"
max="9"
android:layout_toLeftOf="#+id/textView1" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text=" - "
android:textAppearance="?android:attr/textAppearanceLarge" />
<com.evapp.customViews.NumberPickerMinMax
android:id="#+id/TimePickerView_hour1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_margin="2dp"
min="0"
max="2"
android:layout_toLeftOf="#+id/TimePickerView_hour2" />
<com.evapp.customViews.NumberPickerMinMax
android:id="#+id/TimePickerView_minutes1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
min="0"
max="5"
android:layout_toRightOf="#+id/textView1" />
<com.evapp.customViews.NumberPickerMinMax
android:id="#+id/TimePickerView_minutes2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
min="0"
max="9"
android:layout_toRightOf="#+id/TimePickerView_minutes1" />
</RelativeLayout>
</RelativeLayout>
Hope this is what you needed

Dialog + callback?

I have made a CustomTypeDialog class and what I want is to use EditText which is not in the active layout. I get a nullpointer exception when I try to click one of the buttons, which I think is because they are not in the active layout. Can you help me solve this? The dialog is called in an activity from another class.
package dk.droidrun.droidrunapp;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
public class CustomTypeDialog extends Dialog {
ImageButton routeType;
EditText txtType;
Button imageRun, imageBike, imageWalk;
public CustomTypeDialog(final Context context) {
super(context);
this.setContentView(R.layout.customtype_dialog);
routeType = (ImageButton)findViewById(R.id.saveRoute_activityType);
txtType = (EditText)findViewById(R.id.saveRoute_typeTxt);
imageRun = (Button)findViewById(R.id.dialog_btn1);
imageBike = (Button)findViewById(R.id.dialog_btn2);
imageWalk = (Button)findViewById(R.id.dialog_btn3);
setTitle("Select activity type");
show();
imageRun.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
txtType.setText("Run");
routeType.setBackgroundResource(R.drawable.track_run);
}
});
imageBike.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
txtType.setText("Bike");
routeType.setBackgroundResource(R.drawable.track_bike);
}
});
imageWalk.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
txtType.setText("Walk");
routeType.setBackgroundResource(R.drawable.track_walk);
}
});
}
}
This is my customtype_dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".AutoMode"
android:background="#color/black" >
<RelativeLayout
android:id="#+id/dialog_relativeLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:layout_above="#+id/dialog_relativeLayout2"
android:layout_centerHorizontal="true" >
<Button
android:id="#+id/dialog_btn1"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_margin="3dp"
android:background="#drawable/track_run"
android:layout_alignRight="#+id/dialog_relativeLayout1"
android:layout_alignTop="#+id/dialog_relativeLayout1"
/>
<Button
android:id="#+id/dialog_btn2"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_margin="3dp"
android:background="#drawable/track_bike"
android:layout_alignTop="#+id/dialog_relativeLayout1"
android:layout_toRightOf="#+id/dialog_btn1"
/>
<Button
android:id="#+id/dialog_btn3"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_margin="3dp"
android:layout_toRightOf="#+id/dialog_btn2"
android:background="#drawable/track_walk"
/>
</RelativeLayout>
</RelativeLayout>
saveroutes.xml
<?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/black"
tools:context=".SaveRouteActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="#string/saveRoute"
android:textColor="#color/white"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:layout_marginTop="10dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7a0100"
android:text="Enter a name for the route" />
<EditText
android:id="#+id/saveRoute_nameRoute"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:ems="10"
android:hint="#string/saveRoute_name"
android:textColor="#color/white"
android:background="#4e4751"
android:inputType="textPersonName" >
</EditText>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7a0100"
android:text="Describe your route" />
<EditText
android:id="#+id/saveRoute_desciptionTxt"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:ems="10"
android:hint="#string/saveRoute_description"
android:textColor="#color/white"
android:background="#4e4751"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7a0100"
android:text="Activity type (e.g. running)"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_horizontal" >
<EditText
android:id="#+id/saveRoute_typeTxt"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="17dip"
android:ems="10"
android:layout_marginLeft="30dp"
android:hint="#string/saveRoute_type"
android:textColor="#color/white"
android:background="#4e4751" >
<requestFocus />
</EditText>
<ImageButton
android:id="#+id/saveRoute_activityType"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/track_walk" />
</LinearLayout>
<Button
android:id="#+id/saveRoute_saveBtn"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="30dp"
android:background="#color/white"
android:text="#string/saveRoute_savebutton" />
<Button
android:id="#+id/saveRoute_cancelBtn"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="30dp"
android:background="#color/white"
android:text="#string/saveRoute_cancel" />
</LinearLayout>

You cannot access views from another layout (your activity) using findViewById within the dialog view.
You need to add a callback listener for when the buttons on your dialog are clicked:
public interface OnDialogClickListener {
void onDialogImageRunClick();
}
public class CustomTypeDialog extends Dialog {
private final OnDialogClickListener listener;
public CustomTypeDialog(final Context context, OnDialogClickListener listener) {
this.listener = listener;
}
....
imageRun.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
listener.onDialogImageRunClick();
}
);
}
Then when you create your dialog in your Activity where you have access to the view:
new CustomTypeDialog(context, new CustomTypeDialog.OnDialogClickListener() {
#Override
public void onDialogImageRunClick() {
txtType.setText("Run");
routeType.setBackgroundResource(R.drawable.track_run);
}
});

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