Android UI How to - Use ImageButton








Android provides an image button via android.widget.ImageButton.

Using an image button is similar to using the basic button. 


<ImageButton android:id="@+id/imageButton2"
             android:layout_width="wrap_content" 
             android:layout_height="wrap_content"
             android:onClick="myClickHandler"
             android:src="@drawable/icon"  />

Java code to set image to an ImageButton. 

ImageButton imageButton2 = (ImageButton)this.findViewById(R.id.imageButton2);
imageButton2.setImageResource(R.drawable.icon);

The image file for the button must exist under /res/drawable.





Example

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
// w  w  w  . ja  va  2 s.c  om
    <ImageButton android:id="@+id/imageButton2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="myClickHandler"
        android:src="@drawable/ic_launcher"  />
</LinearLayout>

Java code

package com.java2s.app;
//from   ww w.ja  v a  2 s .c  om
import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

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

    }

}
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