Question

I am having a button in my activity and using a TranslateAnimation to change its position.

I am using anim.setFillAfter(true); to keep the resulting translation, the button shifts its position but the touch area remains same.
Now when i touch on the button it doesn’t work rather touching on the previous location of the button calls its listener..

Here is my code:

MainActivity.java

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Animation anim=new TranslateAnimation(0, 100, 0, 0);
        anim.setDuration(500);
        anim.setFillAfter(true);
        Button mybtn = (Button)findViewById(R.id.btn);
        mybtn.startAnimation(anim);
    }

    public void myFunc(View v){
        Toast.makeText(this, "btn clicked", Toast.LENGTH_SHORT).show();
    }
}

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"
            tools:context=".MainActivity" >

            <Button
                android:id="@+id/btn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_centerVertical="true"
                android:text="@string/hello_world" 
                android:onClick="myFunc"/>

        </RelativeLayout>

Answer 1

I have re-generated your case and it seems like only 50% of the button shows the selected color. Is that right ? Try this :

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button sampleButton = (Button)findViewById(R.id.btn);
    sampleButton.animate().translationX(somevalue).setDuration(someduration);
}