有两种实现方法
1、第一种方式：Timer
/** * Description：自定义Timer ** Created by Mjj on 2016/12/4. */ public class TimeCount extends CountDownTimer { private Button button; //参数依次为总时长,和计时的时间间隔 public TimeCount(Button button, long millisInFuture, long countDownInterval) { super(millisInFuture, countDownInterval); this.button = button; } //计时过程显示 @Override public void onTick(long millisUntilFinished) { String time = "(" + millisUntilFinished / 1000 + ")秒"; setButtonInfo(time, "#c1c1c1", false); } //计时完毕时触发 @Override public void onFinish() { setButtonInfo("重新获取", "#f95353", true); } /** * 验证按钮在点击前后相关设置 * * @param content 要显示的内容 * @param color 颜色值 * @param isClick 是否可点击 */ private void setButtonInfo(String content, String color, boolean isClick) { button.setText(content); button.setBackgroundColor(Color.parseColor(color)); button.setClickable(isClick); }}
2、第二种方式：Handler
/** * 第二种方式：使用Handler ** 静态内部类：避免内存泄漏 */ private static class MyHandler extends Handler { private final WeakReference
weakReference; public MyHandler(MainActivity activity) { weakReference = new WeakReference (activity); } @Override public void handleMessage(Message msg) { super.handleMessage(msg); MainActivity activity = weakReference.get(); if (activity != null) { switch (msg.what) { case 0: if (msg.arg1 == 0) { btn2.setText("重新获取"); btn2.setBackgroundColor(Color.parseColor("#f95353")); btn2.setClickable(true); } else { btn2.setText("(" + msg.arg1 + ")秒"); btn2.setBackgroundColor(Color.parseColor("#c1c1c1")); btn2.setClickable(false); } break; } } } } /** * 监听按钮下直接调用即可 */ private void sendMessageClick() { new Thread(new Runnable() { @Override public void run() { for (int i = 59; i >= 0; i--) { Message msg = myHandler.obtainMessage(); msg.arg1 = i; myHandler.sendMessage(msg); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } } }).start(); }