Android ImageButton控件按下效果的实现

package your.imagebtn.namespace; import your.imagebtn.namespace.R; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.Window; import android.widget.ImageButton; public class CustomImageBtnActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageButton btn = (ImageButton)findViewById(R.id.imageButton1); btn.setOnTouchListener(new View.OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ //更改为按下时的背景图片 ((ImageButton)v).setImageDrawable(getResources().getDrawable(R.drawable.android_btn_pressed)); }else if(event.getAction() == MotionEvent.ACTION_UP){ //改为抬起时的图片 ((ImageButton)v).setImageDrawable(getResources().getDrawable(R.drawable.android_btn)); } return false; } }); } }