获取验证码倒计时功能

自己的app最近在做登录注册功能，有一个获取验证码验证手机的功能需要一个验证码倒计时控件，

之前公司项目中感觉实现方式有问题，就打算换种放心，网上搜索出来的都不满意，就想着之前实现过特卖倒计时的textview 就想着改一下。

效果如图，做到了退出当前页面再回来后时间继续接着倒计时







倒计时button代码

package com.hyp.lol.leagueoflegends.view;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.Button;

import com.hyp.lol.leagueoflegends.Constant;
import com.hyp.lol.leagueoflegends.MyApplication;

import java.util.HashMap;

/**
* Created by Administrator on 2016/3/30.
*/
public class TimerButton extends Button implements Runnable {
private long msecond;//秒
private boolean run=false; //是否启动了
private long endTime;

public TimerButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setTimes(long times) {
msecond = times;
endTime = System.currentTimeMillis()+60*1000;
}
/**
*
* 倒计时计算
*/
private void ComputeTime()
{
msecond--;
if(msecond==0)
{
stopRun();
}
}
public boolean isRun() {
return run;
}
public void beginRun() {
this.run = true;
run();
}
public void stopRun(){
this.run = false;
}
@Override
public void run() {
//标示已经启动
if(run) {
ComputeTime();
String strTime= msecond+"秒";
this.setText(strTime);
this.setEnabled(false);
postDelayed(this, 1000);
}else {
String des= "获取验证码";
setText(des);
this.setEnabled(true);
removeCallbacks(this);
}
}
public void onCreate(){
long nowTime = System.currentTimeMillis();
if(MyApplication.registerCodeTimeMap!=null) {
endTime = MyApplication.registerCodeTimeMap.get(Constant.CODE_ENDTIME);
long timer = endTime - nowTime;
if (timer > 0) {
msecond = timer / 1000;
beginRun();
}
}
}
public void onDestroy(){
//activity退出后保存时间
if(run){
if (MyApplication.registerCodeTimeMap == null)
MyApplication.registerCodeTimeMap = new HashMap<String, Long>();
MyApplication.registerCodeTimeMap.put(Constant.CODE_ENDTIME, endTime);
}
}
}

MyApplication中

public static Map<String, Long> registerCodeTimeMap;//用来存放倒计时的时间

xml中使用

<com.hyp.lol.leagueoflegends.view.TimerButton
android:id="@+id/bt_getcode"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="获取验证码"
android:background="@drawable/code_button"
/>

其中background用到的drawable

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false">
<shape>
<!-- 填充 #FF9455-->
<solid android:color="@color/new_black" />
<!-- 圆角 -->
<corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
<!-- 设置四个角的半径 -->

</shape>

</item>
<item android:state_enabled="true">
<shape>
<!-- 填充 #FF9455-->
<solid android:color="@color/darkslategray" />
<!-- 圆角 -->
<corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
<!-- 设置四个角的半径 -->

</shape>
</item>

</selector>

Activity中

@Override
protected void onCreate(Bundle savedInstanceState) {
bt_getcode = (TimerButton) findViewById(R.id.bt_getcode);
bt_getcode.onCreate();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bt_getcode:
if(!bt_getcode.isRun()){
bt_getcode.setTimes(CountdownTime);//自定义的时间 60
bt_getcode.beginRun();
}
break;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
bt_getcode.onDestroy();
}