Android button click doesn't work and editing textbox with it

Android button click doesn't work and editing textbox with it - java

I'm really new in coding for Android, just started to learn. I have some image buttons to change values displayed in textboxes and I don't know how to do this. I tried some tests for buttons but I have some errors which I can't repair.
Message from eclipse is:
The method setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (new OnClickListener(){})
and
The method setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (new OnClickListener(){})
for setOnClickListener and OnClickListener
I looked at this thread but still I don't know what to do
setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (SequencerActivity) back.setOnClickListener(this);
Except that, I want to change the Medium text fields with the buttons. Perhaps by the declared integers.
Code:
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
Button b1;
Button b2;
Button b3;
Button b4;
Button b5;
Button b6;
Button b7;
Button b8;
int vs,vh,ws,wh,wth,wts;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button) findViewById(R.id.imageButton1);
b1.setOnClickListener(new OnClickListener()
{
protected void onClick(View v)
{
Toast.makeText(ApplicationContext(), "Om nom nom", Toast.LENGTH_SHORT).show();
}
});
}
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:background="#012e53"
android:paddingBottom="5dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="5dp"
tools:context="pl.tmalachowski.truewindcalc.MainActivity" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="26dp"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="center"
android:orientation="vertical"
android:textColor="#bdc3c7" >
<TextView
android:id="#+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/ves"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="center" >
<TextView
android:id="#+id/textView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/rel"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:gravity="center" >
<TextView
android:id="#+id/textView1"
android:layout_width="62dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/ves1"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:gravity="center" >
<TextView
android:id="#+id/textView2"
android:layout_width="77dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/ves2"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:gravity="center" >
<TextView
android:id="#+id/textView3"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/rel1"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:gravity="center" >
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/rel2"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/podst" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:gravity="center"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/arrow_up_float" />
</LinearLayout>

I think you are using your onClickListener wrong.
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "Om nom nom", Toast.LENGTH_SHORT).show();
}
});
Please try this usage. Hope it helps

Declare like this ImageButton b1; instead of Button b1;
then change to like this following code
b1=(ImageButton) findViewById(R.id.imageButton1);
b1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(ApplicationContext(), "Om nom nom", Toast.LENGTH_SHORT).show();
}
});

Related

Switch and passing data between activities android/java

i'm beginner in android coding and im trying to switch activities using Intent class
but it do nothing on all cases (Putting data or inputting data) can someone resolve my problem ? here is my layout.xml :
i already added the other activity in the manifiest xml
i think the problem is in where i get data from the spinner or from the radioButton
<?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:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Formulaire d'inscription"
android:textAlignment="center"
android:textSize="30dp"
android:textColor="#FF0000"
android:gravity="center_horizontal" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Nom" />
<EditText
android:id="#+id/txtNom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Saisir votre nom"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Prenom :" />
<EditText
android:id="#+id/txtPrenom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Saisir votre prénom"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Email :" />
<EditText
android:id="#+id/txtEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:hint="Saisir votre email"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Mot de passe" />
<EditText
android:id="#+id/txtPass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:hint="Saisir le mot de passe"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Confirmation :" />
<EditText
android:id="#+id/txtPassConfirm"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:hint="Confirmation"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Genre" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<RadioGroup
android:id="#+id/radiogroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/rbh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Homme"
android:checked="true">
</RadioButton>
<RadioButton
android:id="#+id/rbf"
android:layout_marginLeft="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Femme">
</RadioButton>
</RadioGroup>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="250px"
android:layout_height="wrap_content"
android:text="Pays :" />
<Spinner
android:id="#+id/spnPays"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="#array/pays" />
</LinearLayout>
<LinearLayout
android:layout_marginTop="40dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/btnSignUp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="INSCRIRE"
/>
</LinearLayout>
</LinearLayout>
and my java code is :
package com.fach.app1;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
public static String nomInscrit;
public static String prenomInscrit;
public static String emailInscrit;
public static String passwordInscrit;
public static String payInscrit;
public static String genreInscrit;
Button btnSign ;
EditText nom ;
EditText prenom ;
EditText email ;
EditText password ;
EditText passConf;
Spinner spnPay;
RadioGroup genre;
RadioButton gen;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnSign = findViewById(R.id.btnSignUp);
nom = findViewById(R.id.txtNom);
prenom = findViewById(R.id.txtPrenom);
email = findViewById(R.id.txtEmail);
password = findViewById(R.id.txtPass);
passConf = findViewById(R.id.txtPassConfirm);
spnPay = findViewById(R.id.spnPays);
genre = findViewById(R.id.radiogroup);
int selectedId = genre.getCheckedRadioButtonId();
gen = findViewById(selectedId);
btnSign.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
nomInscrit = nom.getText().toString();
prenomInscrit = prenom.getText().toString();
emailInscrit = email.getText().toString();
passwordInscrit = password.getText().toString();
payInscrit = spnPay.getSelectedItem().toString();
genreInscrit = gen.getText().toString();
if(nom.getText().equals("") || prenom.getText().equals("") || email.getText().equals("") || password.getText().equals("")){
Toast.makeText(MainActivity.this,"Veuillez remplir tous les champs", Toast.LENGTH_SHORT);
}
else if(!password.getText().equals(passConf.getText())){
Toast.makeText(MainActivity.this,"Les mots de passe doivent etre identique", Toast.LENGTH_SHORT);
}
else{
switchActivities();
}
}
});
}
private void switchActivities() {
Intent ActivityIntent = new Intent(this, DataActivity.class);
startActivity(ActivityIntent);
}
}
Thanks for reading and resolving my problem

You need to pass the data using the ActivityIntent you have created in switchActivity function amd then get that data in your second Activity from getIntent().getString(key) function.
Please refer to this,
How do I pass data between Activities in Android application?

Managing onClickListeners in more then one xml file

I created an app that adds forms dynamically when a user clicks the add butting and deletes it when he clicks the cancel button. I have two cancel buttons, one in the Field.xml file and the other in the activity_school_search_setup file.
They both have the same ID but the one in the Field.xml file does not delete the field. It appears as though the onclicklistener does not function for the delete button.
Main Java class file
import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.view.View;
import android.widget.Toast;
public class SchoolSearchSetup extends AppCompatActivity implements View.OnClickListener {
private EditText searchSchoolID;
private Button searchSchoolButtonID;
private ListView listOfSchoolsID;
private Button openNewschoolID;
private LinearLayout schoolSetupLayout;
private Button addNewClass;
private EditText classNameEditText;
private Button deleteButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_school_search_setup);
findAllViewsID();
initializeListenners();
}
public void findAllViewsID(){
classNameEditText = findViewById(R.id.classNameText);
addNewClass = findViewById(R.id.addNewClassButton);
schoolSetupLayout = findViewById(R.id.schoolSetupLayout);
searchSchoolID = findViewById(R.id.searchSchoolID);
searchSchoolButtonID = findViewById(R.id.searchSchoolButtonID);
listOfSchoolsID = findViewById(R.id.listOfSchoolsID);
openNewschoolID = findViewById(R.id.openNewschoolID);
deleteButton = findViewById(R.id.delete_button);
}
public void initializeListenners(){
openNewschoolID.setOnClickListener(SchoolSearchSetup.this);
addNewClass.setOnClickListener(SchoolSearchSetup.this);
deleteButton.setOnClickListener(SchoolSearchSetup.this);
}
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
#Override
public void onClick(View view) {
switch(view.getId()){
case R.id.openNewschoolID:
displaySchoolSetUpForms();
break;
case R.id.addNewClassButton:
addNewClass();
break;
case R.id.delete_button:
schoolSetupLayout.removeView((View) view.getParent());
}
}
private void displaySchoolSetUpForms() {
schoolSetupLayout.setVisibility(View.VISIBLE);
}
}
Here is the main XML activity file
activity.school_search_setup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
tools:context="com.example.demeainc.demea.MainActivity"
android:orientation="vertical"
android:background="#color/backgroundColor">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp">
<ImageView
android:id="#+id/backArrowClassView"
android:layout_width="30dp"
android:layout_height="30dp"
android:src="#drawable/ic_arrow_class"
android:layout_marginLeft="5dp"/>
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="50dp"
android:text="Search your school."
android:gravity="center"
android:textSize="25dp" />
<android.support.v7.widget.CardView
android:foreground="?attr/selectableItemBackground"
android:clickable="true"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp">
<EditText
android:id="#+id/searchSchoolID"
android:layout_width="270dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:drawableLeft="#drawable/ic_search_black_24dp"
android:hint="Search"/>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="20dp">
<Button
android:id="#+id/searchSchoolButtonID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:text="Search"
android:textColor="#ffff"
android:background="#color/colorPrimary"
android:textStyle="bold"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginLeft="10dp">
<android.support.v7.widget.CardView
android:layout_width="300dp"
android:layout_height="wrap_content">
<ListView
android:id="#+id/listOfSchoolsID"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#android:color/transparent"
android:cacheColorHint="#color/ligtherDarkGrey"
android:divider="#CCCCCC"
android:dividerHeight="2dp"
android:paddingLeft="2dp" >
</ListView>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
<Button
android:id="#+id/openNewschoolID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:background="#color/colorPrimary"
android:text="Open New School"
android:textColor="#ffff"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="#+id/schoolSetupLayout"
android:visibility="invisible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<TextView
android:id="#+id/schoolSetupText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="School Setup"
android:textSize="20dp"
android:layout_marginLeft="50dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<Button
android:id="#+id/addNewClassButton"
android:layout_marginTop="15dp"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Add new class"
android:textColor="#ffff"
android:background="#color/colorPrimary"/>
<Button
android:id="#+id/nextButton"
android:layout_marginTop="25dp"
android:layout_marginLeft="8dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Next"
android:textColor="#ffff"
android:background="#color/green"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
Here is the field.xml file
<?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:id="#+id/schoolSetupLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
</LinearLayout>

You either should add a clickListener on
View rowView = inflater.inflate(R.layout.field, null);
Or add android:onClick within an element of field.xml if you want some click event to happen on it.
initializeListenners(); is only called once, during the initial layout, not on dynamic view additions.

Implement OnClickListener for Field.xml button after you inflate that layout.
Here is example:
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
final Button btnDelete = rowView.findViewById(R.id.delete_button);
btnDelete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Your stuff
}
});
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
Hope that help :)

Dynamically generated delete button does not respond to an OnclickListener(Android JAVA)

I created an app that dynamically adds an edittext field to the view by clicking an Add button and deletes it by clicking a delete button. I created a separate xml file called field.xml that is called up when a new edittext field is added to the view. But the delete button does not remove this edittext field when clicked. What am I missing in the code I have tried most options but to no avail.
Here is the main java file
SchoolSearchSetup.java
import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.view.View;
import android.widget.Toast;
public class SchoolSearchSetup extends AppCompatActivity implements View.OnClickListener {
private EditText searchSchoolID;
private Button searchSchoolButtonID;
private ListView listOfSchoolsID;
private Button openNewschoolID;
private LinearLayout schoolSetupLayout;
private Button addNewClass;
private EditText classNameEditText;
private Button deleteButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_school_search_setup);
findAllViewsID();
initializeListenners();
}
public void findAllViewsID(){
classNameEditText = findViewById(R.id.classNameText);
addNewClass = findViewById(R.id.addNewClassButton);
schoolSetupLayout = findViewById(R.id.schoolSetupLayout);
searchSchoolID = findViewById(R.id.searchSchoolID);
searchSchoolButtonID = findViewById(R.id.searchSchoolButtonID);
listOfSchoolsID = findViewById(R.id.listOfSchoolsID);
openNewschoolID = findViewById(R.id.openNewschoolID);
deleteButton = findViewById(R.id.delete_button);
}
public void initializeListenners(){
openNewschoolID.setOnClickListener(SchoolSearchSetup.this);
addNewClass.setOnClickListener(SchoolSearchSetup.this);
deleteButton.setOnClickListener(SchoolSearchSetup.this);
}
public void addNewClass(){
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.field, null);
schoolSetupLayout.addView(rowView, schoolSetupLayout.getChildCount() -1);
}
#Override
public void onClick(View view) {
switch(view.getId()){
case R.id.openNewschoolID:
displaySchoolSetUpForms();
break;
case R.id.addNewClassButton:
addNewClass();
break;
case R.id.delete_button:
schoolSetupLayout.removeView((View) view.getParent());
}
}
private void displaySchoolSetUpForms() {
schoolSetupLayout.setVisibility(View.VISIBLE);
}
}
The main XML file
activity.school_search_setup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
tools:context="com.example.demeainc.demea.MainActivity"
android:orientation="vertical"
android:background="#color/backgroundColor">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp">
<ImageView
android:id="#+id/backArrowClassView"
android:layout_width="30dp"
android:layout_height="30dp"
android:src="#drawable/ic_arrow_class"
android:layout_marginLeft="5dp"/>
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="50dp"
android:text="Search your school."
android:gravity="center"
android:textSize="25dp" />
<android.support.v7.widget.CardView
android:foreground="?attr/selectableItemBackground"
android:clickable="true"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp">
<EditText
android:id="#+id/searchSchoolID"
android:layout_width="270dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:drawableLeft="#drawable/ic_search_black_24dp"
android:hint="Search"/>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="20dp">
<Button
android:id="#+id/searchSchoolButtonID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:text="Search"
android:textColor="#ffff"
android:background="#color/colorPrimary"
android:textStyle="bold"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginLeft="10dp">
<android.support.v7.widget.CardView
android:layout_width="300dp"
android:layout_height="wrap_content">
<ListView
android:id="#+id/listOfSchoolsID"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#android:color/transparent"
android:cacheColorHint="#color/ligtherDarkGrey"
android:divider="#CCCCCC"
android:dividerHeight="2dp"
android:paddingLeft="2dp" >
</ListView>
</android.support.v7.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
<Button
android:id="#+id/openNewschoolID"
android:layout_width="200dp"
android:layout_height="60dp"
android:layout_marginLeft="60dp"
android:background="#color/colorPrimary"
android:text="Open New School"
android:textColor="#ffff"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="#+id/schoolSetupLayout"
android:visibility="invisible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<TextView
android:id="#+id/schoolSetupText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="School Setup"
android:textSize="20dp"
android:layout_marginLeft="50dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<Button
android:id="#+id/addNewClassButton"
android:layout_marginTop="15dp"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Add new class"
android:textColor="#ffff"
android:background="#color/colorPrimary"/>
<Button
android:id="#+id/nextButton"
android:layout_marginTop="25dp"
android:layout_marginLeft="8dp"
android:layout_width="100dp"
android:layout_height="50dp"
android:text="Next"
android:textColor="#ffff"
android:background="#color/green"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
Here is the Field.xml file for the edit text to be added. Both the field.xml and the activity.school_search_setup.xml share the same IDs.
Field.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:id="#+id/schoolSetupLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/classNameText"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Class name, e.g Grade one" />
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"/>
</LinearLayout>
</LinearLayout>

Have you tried using
setVisibility(View.GONE);
Update:
Try this code block:
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
Button btn = new Button(this);
btn.setId(i);
final int id_ = btn.getId();
btn.setText("button " + id_);
btn.setBackgroundColor(Color.rgb(80, 80, 90));
linear.addView(btn, params);
btn1 = ((Button) findViewById(id_));
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Toast.makeText(view.getContext(),
"Button clicked index = " + id_, Toast.LENGTH_SHORT)
.show();
}
});

How to put RadioButton that is in LineaLayout inside a RadioGroup

I have six RadioButtons belonging to the same question, and I need to put them in some RadioGroup. But these RadioButtons is in some LinearLayouts. I tried to put one RadioGroup to each RadioButton, but i don't know what i need to do for it to work.
tab_layout_a.xml
<LinearLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="bottom"
android:layout_weight="1"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal">
<RadioButton
android:id="#+id/tipoPackRadio1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:text="Normal"
android:textSize="#dimen/radiobuttons_font_sz" />
<RadioButton
android:id="#+id/tipoPackRadio2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_weight="1"
android:text="Gilda"
android:textSize="#dimen/radiobuttons_font_sz" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_weight="0.9"
android:orientation="horizontal">
<RadioButton
android:id="#+id/tipoPackRadio3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="0dp"
android:layout_weight="1"
android:text="Aged Pack \n(cheese/salve)"
android:textSize="#dimen/radiobuttons_font_sz" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="bottom"
android:layout_weight="1"
android:orientation="horizontal">
<RadioButton
android:id="#+id/tipoPackRadio4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginRight="0dp"
android:layout_weight="1"
android:text="Fellowship"
android:textSize="#dimen/radiobuttons_font_sz" />
<RadioButton
android:id="#+id/tipoPackRadio5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_weight="1"
android:text="Fertilizer"
android:textSize="#dimen/radiobuttons_font_sz" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.9"
android:orientation="horizontal">
<RadioButton
android:id="#+id/tipoPackRadio6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="0dp"
android:layout_weight="1"
android:text="Aged Pack \n(honey)"
android:textSize="#dimen/radiobuttons_font_sz"
android:visibility="visible" />
</LinearLayout>
</LinearLayout>
</LinearLayout>

Try this solution..
class MyActivity extends Activity {
RadioButton _Rone, _Rtwo, _Rthree;
#Override
protected void onCreate(Bundle savedInstanceState) {
//after setContentView(.....)
_Rone = (RadioButton) findViewById(R.id.radio_one);
_Rtwo = (RadioButton) findViewById(R.id.radio_two);
_Rthree = (RadioButton) findViewById(R.id.radio_three);
_Rone.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
_Rone.setChecked(true);
_Rtwo.setChecked(false);
_Rthree.setChecked(false);
}
});
_Rtwo.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
_Rone.setChecked(false);
_Rtwo.setChecked(true);
_Rthree.setChecked(false);
}
});
_Rthree.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
_Rone.setChecked(false);
_Rtwo.setChecked(false);
_Rthree.setChecked(true);
}
});
// do code here
}`
by clicking on anyradio button the other's selection will reset.

Android background color for accordion menu

I want the code in the Java file to set the background color of whatever button was clicked, and keep it, even after you let go of the button. Thanks in advance
I don't really get the formatting on here. I hope it's clear what belongs where.
Java:
package mika.actual;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class accordion extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.accordian);
Button btnProfile = (Button) findViewById(R.id.btnProfile);
Button btnSettings = (Button) findViewById(R.id.btnSettings);
Button btnPrivacy = (Button) findViewById(R.id.btnPrivacy);
View panelProfile = findViewById(R.id.panelProfile);
panelProfile.setVisibility(View.GONE);
View panelSettings = findViewById(R.id.panelSettings);
panelSettings.setVisibility(View.GONE);
View panelPrivacy = findViewById(R.id.panelPrivacy);
panelPrivacy.setVisibility(View.GONE);
btnProfile.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// DO STUFF
View panelProfile = findViewById(R.id.panelProfile);
panelProfile.setVisibility(View.VISIBLE);
View panelSettings = findViewById(R.id.panelSettings);
panelSettings.setVisibility(View.GONE);
View panelPrivacy = findViewById(R.id.panelPrivacy);
panelPrivacy.setVisibility(View.GONE);
}
});
btnSettings.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// DO STUFF
View panelProfile = findViewById(R.id.panelProfile);
panelProfile.setVisibility(View.GONE);
View panelSettings = findViewById(R.id.panelSettings);
panelSettings.setVisibility(View.VISIBLE);
View panelPrivacy = findViewById(R.id.panelPrivacy);
panelPrivacy.setVisibility(View.GONE);
}
});
btnPrivacy.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// DO STUFF
View panelProfile = findViewById(R.id.panelProfile);
panelProfile.setVisibility(View.GONE);
View panelSettings = findViewById(R.id.panelSettings);
panelSettings.setVisibility(View.GONE);
View panelPrivacy = findViewById(R.id.panelPrivacy);
panelPrivacy.setVisibility(View.VISIBLE);
}
});
}
}
XML:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFFFF"
android:orientation="vertical">
<Button
android:id="#+id/btnProfile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Profile"
android:textColor="#FFFFFFFF" />
<LinearLayout
android:id="#+id/panelProfile"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#FFFFFFFF">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFFFF">
<LinearLayout
android:id="#+id/panelProfile1"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFFFF">
<TextView
android:id="#+id/strName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name" />
<EditText
android:id="#+id/txtName"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:id="#+id/panelProfile2"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFFFF">
<TextView
android:id="#+id/strSurname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Surname" />
<EditText
android:id="#+id/txtSurname"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
<Button
android:id="#+id/btnSettings"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Settings"
android:textColor="#FFFFFFFF" />
<LinearLayout
android:id="#+id/panelSettings"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#FFFFFFFF">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/panelSettings1"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFFFF">
<TextView
android:id="#+id/strMail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="e-mail" />
<EditText
android:id="#+id/txtMail"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:id="#+id/panelSettings2"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFFFF">
<TextView
android:id="#+id/strPhone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Phone" />
<EditText
android:id="#+id/txtPhone"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
<Button
android:id="#+id/btnPrivacy"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Privacy"
android:textColor="#FFFFFFFF" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/panelPrivacy"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#FFFFFFFF">
<CheckBox
android:id="#+id/checkFacebook"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Facebook"
android:textColor="#ff355689">
</CheckBox>
<CheckBox
android:id="#+id/checkLinkedIn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="LinkedIn"
android:textColor="#ff355689">
</CheckBox>
<CheckBox
android:id="#+id/checkTwitter"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Twitter"
android:textColor="#ff355689">
</CheckBox>
</LinearLayout>
</ScrollView>
</LinearLayout>

If I understood correctly, what you want to do is, when clicking a button and expanding its sub-menu, change the background of that button until it is clicked again. You can do this with a Tag on the Button:
btnSettings.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// DO STUFF
//if button is not selected, change background and tag the View as selected
if(v.getTag() == null || v.getTag().equals("not_selected")) {
v.setBackgroundColor(Color.RED);
v.setTag("selected");
//show sub-menu
}
//if button is already selected, reset background and tag the View as not selected
else{
v.setBackgroundResource(android.R.drawable.btn_default);
v.setTag("not_selected");
//hide sub menu
}
}
});
Notice that v.setBackgroundResource(android.R.drawable.btn_default); is resetting the Button background to an android drawable. You may want to change this to a custom drawable or color.
You could have used an ExpandableListView to implement this kind of menu.

button.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
view.setBackgroundColor(ContextCompat.getColor(context, R.color.presed_color));
} else if (event.getAction() == MotionEvent.ACTION_UP) {
view.setBackgroundColor(ContextCompat.getColor(context, R.color.unpresed_color));
}
return false;
}
});

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Android button click doesn't work and editing textbox with it - java

I think you are using your onClickListener wrong. b1.setOnClickListener(new View.OnClickListener() { #Override public void onClick(View v) { Toast.makeText(getApplicationContext(), "Om nom nom", Toast.LENGTH_SHORT).show(); } }); Please try this usage. Hope it helps

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Dynamically generated delete button does not respond to an OnclickListener(Android JAVA)

How to put RadioButton that is in LineaLayout inside a RadioGroup

Android background color for accordion menu

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