DownTimer.java
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package com.cnlive.gundam.user.util;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import java.lang.ref.WeakReference;
public class DownTimer {
private long totalTime = -1;
private long intervalTime = 0;
private long remainTime;
private long systemAddTotalTime;
private static final int TIME = 1;
private TimeListener listener;
private long curReminTime;
private boolean isPause = false;
public DownTimer() {
mHandler = new MyHandler(this);
}
private static class MyHandler extends Handler {
WeakReference<DownTimer> mActivity;
MyHandler(DownTimer activity) {
mActivity = new WeakReference<>(activity);
}
@Override
public void handleMessage(Message msg) {
DownTimer theActivity = mActivity.get();
switch (msg.what) {
case TIME:
if (!theActivity.isPause)
theActivity.soloveTime();
break;
case 2:
theActivity.isPause = true;
break;
default:
break;
}
}
}
public void setIntervalTime(long intervalTime) {
this.intervalTime = intervalTime;
}
public void setTotalTime(long totalTime) {
this.totalTime = totalTime;
}
public long getIntervalTime() {
return intervalTime;
}
public long getTotalTime() {
return totalTime;
}
public void start() {
if (totalTime <= 0 && intervalTime <= 0) {
throw new RuntimeException("you must set the totalTime > 0 or intervalTime >0");
}
systemAddTotalTime = SystemClock.elapsedRealtime() + totalTime;
if (null != mHandler)
mHandler.sendEmptyMessage(TIME);
}
public void cancel() {
if (mHandler != null) {
mHandler.removeMessages(TIME);
}
}
public void release(){
if(mHandler != null){
mHandler.removeMessages(0);
mHandler.removeCallbacks(null);
mHandler = null;
}
}
public void pause() {
if (mHandler != null) {
mHandler.removeMessages(TIME);
isPause = true;
curReminTime = remainTime;
}
}
public void resume() {
if (isPause) {
isPause = false;
totalTime = curReminTime;
start();
}
}
private MyHandler mHandler;
private void soloveTime() {
remainTime = systemAddTotalTime - SystemClock.elapsedRealtime();
if (remainTime <= 0) {
if (listener != null) {
listener.onFinish();
cancel();
}
} else if (remainTime < intervalTime) {
if (null != mHandler)
mHandler.sendEmptyMessageDelayed(TIME, remainTime);
} else {
long curSystemTime = SystemClock.elapsedRealtime();
if (listener != null) {
listener.onInterval(remainTime);
}
long delay = curSystemTime + intervalTime - SystemClock.elapsedRealtime();
while (delay < 0) delay += intervalTime;
if (null != mHandler) {
mHandler.sendEmptyMessageDelayed(TIME, delay);
}
}
}
public interface TimeListener {
public void onFinish();
public void onInterval(long remainTime);
}
public void setTimerLiener(TimeListener listener) {
this.listener = listener;
}
}