获取短信验证码之后按钮背景变化并且出现倒计时

 Button getVerCodeButton = (Button) findViewById(R.id.login_get_ver_code);
 private class VerCodeTimer extends CountDownTimer {

        private int seconds;
        private int interval;
        private int nowTime;

        //millisInFuture为你设置的此次倒计时的总时长,比如60秒就设置为60000
        //countDownInterval为你设置的时间间隔,比如一般为1秒,根据需要自定义。
        public VerCodeTimer(long millisInFuture, long countDownInterval) {

            super(millisInFuture, countDownInterval);
            seconds = (int) (millisInFuture / 1000);
            interval= (int) (countDownInterval/1000);
            nowTime=seconds;
        }

        //每过你规定的时间间隔做的操作
        @Override
        public void onTick(long millisUntilFinished) {
            nowTime-=interval;
            getVerCodeButton.setText(nowTime + "秒后重新获取");
        }

        //倒计时结束时做的操作↓↓
        @Override
        public void onFinish() {
            getVerCodeButton.setTextSize(10);
            getVerCodeButton.setText("重新获取验证码");
            getVerCodeButton.setClickable(true);
            getVerCodeButton.setBackgroundResource(R.drawable.login_get_ver_code_before_bg);
        }
    }

使用的时候:

 getVerCodeButton.setTextSize(11);
 getVerCodeButton.setClickable(false);
 getVerCodeButton.setBackgroundResource(R.drawable.login_get_ver_code_ago_bg);
 mVerCodeTimer = new VerCodeTimer(10000, 1000);
 mVerCodeTimer.start();

login_edit_normal_bg.xml:

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"
    android:useLevel="false">

    <!-- 背景填充颜色值 -->
    <solid android:color="#6c948b" />

    <!-- radius值越大,越趋于圆形 -->
    <corners android:radius="10dip" />

    <!-- 圆角图像内部填充四周的大小 ,将会以此挤压内部布置的view -->
    <padding
        android:bottom="10dip"
        android:left="10dip"
        android:right="10dip"
        android:top="10dip" />

</shape>

login_edit_passed_bg.xml:

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"
    android:useLevel="false">

    <!-- 背景填充颜色值 -->
    <solid android:color="#509989" />

    <!-- radius值越大,越趋于圆形 -->
    <corners android:radius="10dip" />

    <!-- 圆角图像内部填充四周的大小 ,将会以此挤压内部布置的view -->
    <padding
        android:bottom="10dip"
        android:left="10dip"
        android:right="10dip"
        android:top="10dip" />

</shape>
原文地址:https://www.cnblogs.com/zzw1994/p/5113439.html