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android倒计时取消会延时,Android倒计时、延时操作与新建线程、获取当前时间
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/** * 倒计时45分钟 */
private int second = 0;//秒
private int minute = 45;//分
Handler handler = new Handler();
/**
* 倒计时开始
*/
Runnable runnable = new Runnable() {
@Override
public void run() {
timeCountDown();
handler.postDelayed(this, 1000);
}
};
/**
* 倒计时操作
*/
private void timeCountDown(){
if (minute == 0) {
if (second == 0) {
time_tv.setText("0" + minute + ":" + "0" + second);
Message message = new Message();
message.what = 1;
handlerStop.sendMessage(message);
// jumpActivity(null,ExamEndActivity.class);
// finish();
} else {
second--;
if (second >= 10) {
time_tv.setText("0" + minute + ":" + second);
} else {
time_tv.setText("0" + minute + ":" + "0" + second);
}
}
} else {
if (second == 0) {
second = 59;
minute--;
if (minute >= 10) {
time_tv.setText(minute + ":" + second);
} else {
time_tv.setText("0" + minute + ":" + second);
}
} else {
second--;
if (second >= 10) {
if (minute >= 10) {
time_tv.setText(minute + ":" + second);
} else {
time_tv.setText("0" + minute + ":" + second);
}
} else {
if (minute >= 10) {
time_tv.setText(minute + ":0" + second);
} else {
time_tv.setText("0" + minute + ":0" + second);
}
}
}
}
}
/**
* 停止倒计时
*/
int count = 0;
final Handler handlerStop = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
count = 0;
handler.removeCallbacks(runnable);
break;
}
super.handleMessage(msg);
}
};
/** * 延时操作一 */
mHandler .postDelayed(mRunnable, 1000);
/**
* 延时操作一
*/
private Runnable mRunnable = new Runnable() {
@Override
public void run() {
mHandler.sendEmptyMessage(1);
}
};
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
//1s后执行代码
}
};
/**
* 延时操作二
*/
public void delayedShow(){
new Handler().postDelayed(new Runnable(){
public void run() {
//1s后执行代码
}
}, 1000);
}
新建线程：
new Thread(new Runnable() {
@Override
public void run() {
/**
* 要进行的操作
*/
}
}).start();
获取当前时间
SimpleDateFormat formatter = new SimpleDateFormat ("yyyy年MM月dd日 HH:mm:ss ");
Date curDate = new Date(System.currentTimeMillis());//获取当前时间
String time = formatter.format(curDate);
