Posted by
sapan
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public class EventHandlers extends AppCompatActivity {
Button b1, b2, b3, b4;
Context con; //need by toast
View.OnClickListener myListner; //list to be created
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//your layout
setContentView(R.layout.activity_event_handlers);
con = this;
//Listner this will be called by the button listner
//Listner must be created before setting
//the listner otherwise it will not work
myListner = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button2:
Toast.makeText(EventHandlers.this,
"button 1 clicked", Toast.LENGTH_SHORT).show();
Log.d("event ", "1");
break;
case R.id.button3:
Toast.makeText(EventHandlers.this,
"button 2 clicked", Toast.LENGTH_SHORT).show();
Log.d("event ", "2");
break;
case R.id.button4:
Toast.makeText(EventHandlers.this,
"button 3 clicked", Toast.LENGTH_SHORT).show();
Log.d("event ", "3");
break;
case R.id.button5:
Toast.makeText(EventHandlers.this,
"button 4 clicked", Toast.LENGTH_SHORT).show();
Log.d("event ", "4");
break;
}
}
};
//find the button
b1 = (Button) findViewById(R.id.button2);
b2 = (Button) findViewById(R.id.button3);
b3 = (Button) findViewById(R.id.button4);
b4 = (Button) findViewById(R.id.button5);
//set the listner
b1.setOnClickListener(myListner);
b2.setOnClickListener(myListner);
b3.setOnClickListener(myListner);
b4.setOnClickListener(myListner);
}
}
<?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:id="@+id/activity_event_handlers" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="skd.app.passwordmanager.EventHandlers"> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginLeft="104dp" android:layout_marginStart="104dp" android:layout_marginTop="21dp" android:id="@+id/button2" /> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button2" android:layout_marginTop="28dp" android:id="@+id/button3" /> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/button3" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" android:layout_marginRight="21dp" android:layout_marginEnd="21dp" android:id="@+id/button4" /> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button3" android:layout_alignLeft="@+id/button2" android:layout_alignStart="@+id/button2" android:layout_marginTop="17dp" android:id="@+id/button5" /> </RelativeLayout>
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