ActivityManager
public class ActivityManager{
private static ActivityManager _instance =
new ActivityManager();
private Stack<Activity> activities =
new Stack<>();
private static final byte[] writeLock =
new byte[
0];
public Activity
getFrontActivity(){
return activities.lastElement();
}
public void addActivity(Activity activity){
if(activity!=
null){activities.add(activity);}
}
public void delActivity(Activity activity){
if(activities.size()>
0){
if(activities.contains(activity)){
activities.remove(activity);
activity.finish();
}
}
}
public void finishAllActivity(){
while(activities.size()>
0){
delActivity(getFrontActivity());
}
}
public void backToMain(){
handler.postDelayed(...){
...
while(activities.size()>
1){
if(!(getFrontActivity()
instanceof MainActivity)){delActivity(...)}
else{
break;}
}
}
}
private ActivityManager(){}
public ActivityManager
get_instance(){
synchornized(writeLock){
if(_instance ==
null){_instance =
new ActivityManager(); }
}
}
}
