Android倒计时Button

最近做用户绑定，需要用到倒计时的一个Button，就花点时间封装了一个，非常简单，效果图如下： 

1.TimeButton 自定义倒计时Button

package com.example.timebutton;

import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;

/**
 * 时间控制的Button
 * 
 * @author xue
 * @time 2014-02-26 10:53:55
 * 
 */
public class TimeButton extends Button {
	private int time, tempTime;
	private String subText;

	public final int TIME_START = 0x10;
	public final int TIME_REDUCE = 0x11;
	public final int TIME_END = 0x12;

	public final String GONING_TAG = "TAG_GONGING";
	public final String END_TAG = "TAG_END";

	public TimeButton(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
	}

	public TimeButton(Context context, AttributeSet attrs) {
		super(context, attrs);
		// TODO Auto-generated constructor stub
	}

	public TimeButton(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		// TODO Auto-generated constructor stub
	}

	private Handler handler = new Handler() {

		@Override
		public void handleMessage(Message msg) {
			// TODO Auto-generated method stub
			switch (msg.what) {
			case TIME_START:
				setTag(GONING_TAG);
				break;
			case TIME_REDUCE:
				setText("(" + tempTime-- + ")" + "秒后重新" + subText);
				break;
			case TIME_END:
				setTag(END_TAG);
				setText(subText);
				tempTime = time;
				break;
			default:
				break;
			}
		}

	};

	/**
	 * 继承OnclickListener,用于设置Onclick监听器时向上转型
	 * 
	 * @author xue
	 * 
	 */
	public class TimeOnclickListener implements OnClickListener {

		// 用于判断是否在倒计时完成后执行一系列动作
		public boolean END_TAG = true;

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			if (v.getTag() != null && v.getTag().equals(GONING_TAG)) {
				END_TAG = false;
				return;
			}
			setText(tempTime + "");
			new Thread(new Runnable() {

				@Override
				public void run() {
					// TODO Auto-generated method stub
					// 开始倒计时
					handler.sendEmptyMessage(TIME_START);
					while (tempTime >= 0) {
						// 正在倒计时
						handler.sendEmptyMessage(TIME_REDUCE);
						try {
							Thread.sleep(1000);
						} catch (InterruptedException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
					// 倒计时结束
					END_TAG = true;
					handler.sendEmptyMessage(TIME_END);
				}
			}).start();

		}

	}

	/**
	 * 设置倒计时时间
	 * 
	 * @param time
	 */
	public void setTime(int time) {
		this.time = time;
		this.tempTime = time;
	}

	/**
	 * 设置倒计时过程中的文字
	 * 
	 * @param subText
	 */
	public void setSubText(String subText) {
		this.subText = subText;
	}
}

　　2.MainActivity

package com.example.timebutton;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;

/**
 * 主界面
 * 
 * @author xue
 * @time 2014-02-26 15:34:51
 * 
 */
public class MainActivity extends Activity {

	private TimeButton time;

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

		initView();
		setListener();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	private void initView() {
		time = (TimeButton) findViewById(R.id.timebutton);
		time.setTime(60); // 设置倒计时时间
		time.setSubText("发送");
	}

	private void setListener() {
		time.setOnClickListener(time.new TimeOnclickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				super.onClick(v);
				if (this.END_TAG) // 如果不加判断，则每次点击Button都会执行下面这句话
					Toast.makeText(MainActivity.this, "已发送！", 1000).show();
			}

		});
	}
}

　　

OK，一个简单的倒计时Button就完了。