Android自定义TimeButton实现倒计时按钮

package com.example.xuboyu.myapplication;
 
/**
 * 用于存放倒计时时间
 * @author bnuzlbs-xuboyu 2017/4/5.
 */
import java.util.Map;
 
import android.app.Application;
 
public class App extends Application {
 // 用于存放倒计时时间
 public static Map<String, Long  map;
}

package com.example.xuboyu.myapplication;
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;
/**
* 倒计时按钮
* @author bnuzlbs-xuboyu 2017/4/5.
* 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 int colorafter;
private int colorbefore;
private final String TIME = "time";
private final String CTIME = "ctime";
private OnClickListener mOnclickListener;
private Timer t;
private TimerTask tt;
private long time;
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);
time -= 1000;
if (time < 0) {
TimeButton.this.setEnabled(true);
TimeButton.this.setText(textbefore);
clearTimer();
}
};
};
private void initTimer() {
time = lenght;
t = new Timer();
tt = new TimerTask() {
@Override
public void run() {
Log.e("xuboyu", time / 1000 + "");
han.sendEmptyMessage(0x01);//十六进制的数字1
}
};
}
private void clearTimer() {
if (tt != null) {
tt.cancel();
tt = null;
}
if (t != null)
t.cancel();
t = null;
}
@Override
public void setOnClickListener(OnClickListener l) {
if (l instanceof TimeButton) {
super.setOnClickListener(l);
} else
this.mOnclickListener = l;
}
@Override
public void onClick(View v) {
if (mOnclickListener != null)
mOnclickListener.onClick(v);
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 (App.map == null)
App.map = new HashMap<String, Long ();
App.map.put(TIME, time);
App.map.put(CTIME, System.currentTimeMillis());
clearTimer();
Log.e("xuboyu", "onDestroy");
}
/**
* 和activity的onCreate()方法同步
*/
public void onCreate(Bundle bundle) {
Log.e("xuboyu:倒计时相关", App.map + "");
if (App.map == null)
return;
if (App.map.size() <= 0)// 这里表示没有上次未完成的计时
return;
long time = System.currentTimeMillis() - App.map.get(CTIME)
- App.map.get(TIME);
App.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;
}
}

package com.example.xuboyu.myapplication;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;
/**
* 测试主界面
* @author bnuzlbs-xuboyu 2017/4/5.
*/
public class MainActivity extends Activity implements OnClickListener {
private TimeButton v;
private TimeButton v2;
private TimeButton v3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
v = (TimeButton) findViewById(R.id.button1);
v.onCreate(savedInstanceState);
v.setTextAfter("秒后重新排队").setTextBefore("点击开始排队").setLenght(15 * 1000);
v.setOnClickListener(this);
v2 = (TimeButton) findViewById(R.id.button2);
v2.onCreate(savedInstanceState);
v2.setTextAfter("秒后重新验证").setTextBefore("点击发送验证码").setLenght(10 * 1000);
v2.setOnClickListener(this);
v3 = (TimeButton) findViewById(R.id.button3);
v3.onCreate(savedInstanceState);
v3.setTextAfter("秒后重新倒计时").setTextBefore("点击开始倒计时").setLenght(5 * 1000);
v3.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "这是处理调用者onclicklistnenr",
Toast.LENGTH_SHORT).show();
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
v.onDestroy();
v2.onDestroy();
super.onDestroy();
}
}

<?xml version="1.0" encoding="utf-8"? 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
<solid android:color="#5cbe6c" / 
<!-- 设置按钮的四个角为弧形 -- 
<!-- android:radius 弧形的半径 -- 
<corners android:radius="15dip" / 
<!-- padding：Button里面的文字与Button边界的间隔 -- 
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" / 
</shape 

android:background="@drawable/mybutton"

<com.example.xuboyu.myapplication.TimeButton
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=""
android:background="@drawable/mybutton"
android:layout_margin="20dp"/ 

android:name=".App"

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
android:name=".App" 
<activity android:name=".MainActivity"  
<intent-filter 
<action android:name="android.intent.action.MAIN" / 
<category android:name="android.intent.category.LAUNCHER" / 
</intent-filter 
</activity 
</application