1. 第一次种定时器
private void diyige() {
Timer timer =new Timer();
timer.schedule(task,2000,1000 );
}
final TimerTask task = new TimerTask() {
@Override
public void run() {
i++;
runOnUiThread(new Runnable() {
@Override
public void run() {
textView.setText(String.valueOf(i));
}
});
}
};
2. 第二种定时器
private void dierge() {
参数： 倒计时的时间 多少秒执行一次ontick方法
CountDownTimer count = new CountDownTimer(20000,1000) {
@Override
public void onTick(long millisUntilFinished) {
textView1.setText(String.valueOf(i));
}
倒计时结束时调用
@Override
public void onFinish() {
}
};
count.start();
}
3. 第三种定时器private void disanci() {
final Handler han = new Handler();
han.post(new Runnable() {
@Override
public void run() {
textView2.setText(String.valueOf(i));
han.postDelayed(this,1000);
}
});
}
4. 第四种定时器
private void disige() {
handler1.sendEmptyMessageDelayed(0, 1000);//启动handler，实 现1秒定时循环执行
}private Handler handler1 = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
textView3.setText(String.valueOf(i));
一秒后调用自己
handler1.sendEmptyMessageDelayed(0,1000);
}
};
