Android 自动关闭的提示框

断断续续学安卓一个礼拜，发现Android对于Flex，在很多Widget的组件设计上还不是很人性化

 

经常以为应该具有的功能却不具备，而且Java GUI真的不是我的爱

 

比如AlertDialog的延时关闭，没有现成的方法或者组件，那么只能自己来扩展了

 

来吧，下面就是一个很勉强很勉强的装饰器模式

 

AutoCloseDialog

public class AutoCloseDialog{
	
	private AlertDialog dialog;
	private ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
	
	public AutoCloseDialog(AlertDialog dialog){
		this.dialog = dialog;
	}
	
	public void show(long duration){
		//创建自动关闭任务
		Runnable runner = new Runnable() {
			@Override
			public void run() {
				dialog.dismiss();
			}
		};
		//新建调度任务
		executor.schedule(runner, duration, TimeUnit.MILLISECONDS);
		dialog.show();
	}
	
}

 

然后是演示代码

public class AlertExampleActivity extends Activity {
	// 声明Button
	private Button button;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		button = (Button) findViewById(R.id.button1);
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		final AlertDialog dialog = builder.setTitle("提示").setMessage(
				"2秒后消失").create();
		final AutoCloseDialog d = new AutoCloseDialog(dialog);
		button.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				d.show(2000);
			}
		});
	}

}

 

layout就一个按钮，不用写出来了吧^_^

 

Best Regard to everybody!