获取验证码button，倒计时按钮，继承Button

import java.util.HashMap;import java.util.Map;import java.util.Timer;import java.util.TimerTask;import android.annotation.SuppressLint;import android.content.Context;import android.os.Bundle;import android.os.Handler;import android.util.AttributeSet;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** *  * PS: 由于发现timer每次cancle()之后不能重新schedule方法,所以计时完毕只恐timer. 每次开始计时的时候重新设置timer, * 没想到好办法初次下策 注意把该类的onCreate()onDestroy()和activity的onCreate()onDestroy()同步处理 *  */public class TimeButton extends Button implements OnClickListener {private long lenght = 60 * 1000;// 倒计时长度,这里给了默认60秒private String textafter = "秒后重新获取~";private String textbefore = "点击获取验证码~";private final String TIME = "time";private final String CTIME = "ctime";private OnClickListener mOnclickListener;private Timer t;private TimerTask tt;private long time;private boolean mobile = true;public void setPhone(boolean mobiles) {mobile = mobiles;}Map<String, Long> map = new HashMap<String, Long>();public TimeButton(Context context) {super(context);setOnClickListener(this);}public TimeButton(Context context, AttributeSet attrs) {super(context, attrs);setOnClickListener(this);}@SuppressLint("HandlerLeak")Handler han = new Handler() {public void handleMessage(android.os.Message msg) {TimeButton.this.setText(time / 1000 + textafter);TimeButton.this.setTextColor(getResources().getColor(R.color.gray));time -= 1000;if (time < 0) {TimeButton.this.setEnabled(true);TimeButton.this.setText("重新获取");TimeButton.this.setTextColor(getResources().getColor(R.color.hint_text));clearTimer();}};};private void initTimer() {time = lenght;t = new Timer();tt = new TimerTask() {@Overridepublic void run() {Log.e("yung", time / 1000 + "");han.sendEmptyMessage(0x01);}};}private void clearTimer() {if (tt != null) {tt.cancel();tt = null;}if (t != null)t.cancel();t = null;}@Overridepublic void setOnClickListener(OnClickListener l) {if (l instanceof TimeButton) {super.setOnClickListener(l);} elsethis.mOnclickListener = l;}@Overridepublic void onClick(View v) {if (mOnclickListener != null)mOnclickListener.onClick(v);if (mobile) {initTimer();this.setText(time / 1000 + textafter);this.setEnabled(false);t.schedule(tt, 0, 1000);}// t.scheduleAtFixedRate(task, delay, period);}/** * 和activity的onDestroy()方法同步 */public void onDestroy() {if (this.map == null)this.map = new HashMap<String, Long>();this.map.put(TIME, time);this.map.put(CTIME, System.currentTimeMillis());clearTimer();Log.e("yung", "onDestroy");}/** * 和activity的onCreate()方法同步 */public void onCreate(Bundle bundle) {Log.e("yung", this.map + "");if (this.map == null)return;if (this.map.size() <= 0)// 这里表示没有上次未完成的计时return;long time = System.currentTimeMillis() - this.map.get(CTIME)- this.map.get(TIME);this.map.clear();if (time > 0)return;else {initTimer();this.time = Math.abs(time);t.schedule(tt, 0, 1000);this.setText(time + textafter);this.setEnabled(false);}}/** * 设置计时时候显示的文本 */public TimeButton setTextAfter(String text1) {this.textafter = text1;return this;}/** * 设置点击之前的文本 */public TimeButton setTextBefore(String text0) {this.textbefore = text0;this.setText(textbefore);return this;}/** * 设置到计时长度 *  * @param lenght *            时间 默认毫秒 * @return */public TimeButton setLenght(long lenght) {this.lenght = lenght;return this;}/***/}