为ImageView设置点击样式

<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_pressed="true"
android:drawable="@drawable/selected"/>
<item
android:state_focused="true"
android:state_window_focused="true"
android:drawable="@drawable/selected"/>
<item
android:drawable="@drawable/normal"/>
</selector>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/imageselect"
android:id="@+id/imageview"
/>
</LinearLayout>

public class IvTestActivity extends Activity {
private ImageView ivTest;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ivTest = (ImageView) this.findViewById(R.id.imageview);
ClickListener listener = new ClickListener();
ivTest.setOnClickListener(listener);

}
class ClickListener implements OnClickListener{
public void onClick(View v) {

}
}
}