Android 倒计时类CountDownTimer

可以操作直接操作ui线程:

       new CountDownTimer(6000, 1000) {
            @Override
            public void onTick(long millisUntilFinished) {
                Log.e(TAG, millisUntilFinished / 1000 + "秒");
            }

            @Override
            public void onFinish() {
                Log.e(TAG, "倒计时完成");
            }
        }.start();

image.png