android PopupWindow



PopupWindow可以創建類似對話框風格的窗口，使用PopupWindow創建對話框風格的窗口可以自行定義窗口的位置

public class MainActivity extends Activity {

 private Button bt;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  View root = this.getLayoutInflater().inflate(R.layout.labelicon, null);
  final PopupWindow pp = new PopupWindow(root, 280, 360);
  bt = (Button) findViewById(R.id.button1);
  bt.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View arg0) {
    pp.showAsDropDown(arg0);
    pp.showAtLocation(findViewById(R.id.button1), Gravity.CENTER, 20, 20);
   }
  });
  root.findViewById(R.id.imageView5).setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    pp.dismiss();
   }
  });
 }

}