VerCodeTimer mVerCodeTimer=(Button) findViewById(R.id.login_get_ver_code);
private class VerCodeTimer extends CountDownTimer {
    private int seconds;
    private int interval;
    //millisInFuture為你設(shè)置的此次倒計(jì)時(shí)的總時(shí)長(zhǎng)，比如60秒就設(shè)置為60000
    //countDownInterval為你設(shè)置的時(shí)間間隔，比如一般為1秒,根據(jù)需要自定義。
    public VerCodeTimer(long millisInFuture, long countDownInterval) {
      super(millisInFuture, countDownInterval);
      seconds = (int) (millisInFuture / 1000);
      interval= (int) (countDownInterval/1000);
    }
    //每過(guò)你規(guī)定的時(shí)間間隔做的操作
    @Override
    public void onTick(long millisUntilFinished) {
      getVerCodeButton.setText((seconds-interval) + "秒后重新獲取");
    }
    //倒計(jì)時(shí)結(jié)束時(shí)做的操作↓↓
    @Override
    public void onFinish() {
      getVerCodeButton.setTextSize(10);
      getVerCodeButton.setText("重新獲取驗(yàn)證碼");
      getVerCodeButton.setClickable(true);
      getVerCodeButton.setBackgroundResource(R.drawable.login_get_ver_code_before_bg);
    }
  }
　　
 @Override
  public void onBackPressed() {
    if (mVerCodeTimer != null)
      mVerCodeTimer.cancel();
    super.onBackPressed();
  } 

getVerCodeButton.setTextSize(11);
 getVerCodeButton.setClickable(false);
 getVerCodeButton.setBackgroundResource(R.drawable.login_get_ver_code_ago_bg);
 mVerCodeTimer = new VerCodeTimer(60000, 1000);
 mVerCodeTimer.start(); 

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="rectangle"
  android:useLevel="false">
  <!-- 背景填充顏色值 -->
  <solid android:color="#6c948b" />
  <!-- radius值越大，越趨于圓形 -->
  <corners android:radius="10dip" />
  <!-- 圓角圖像內(nèi)部填充四周的大小 ，將會(huì)以此擠壓內(nèi)部布置的view -->
  <padding
    android:bottom="10dip"
    android:left="10dip"
    android:right="10dip"
    android:top="10dip" />
</shape> 

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="rectangle"
  android:useLevel="false">
  <!-- 背景填充顏色值 -->
  <solid android:color="#509989" />
  <!-- radius值越大，越趨于圓形 -->
  <corners android:radius="10dip" />
  <!-- 圓角圖像內(nèi)部填充四周的大小 ，將會(huì)以此擠壓內(nèi)部布置的view -->
  <padding
    android:bottom="10dip"
    android:left="10dip"
    android:right="10dip"
    android:top="10dip" />
</shape>