Here's the deal, I need to run an operation, and show a progress bar while it runs. I figured I need to run the progress bar update on a different thread, because if I don't (I have tried) the bar doesn't get updated before the end of the operation. I have written the code bellow, however it isn't working, crashing the app instead. I believe the problem is related to the synchronization between threads, but I'm not sure (second time working with Java threads, please spare me, I'm still a newbie). This is running on Android.
Can you spot any illegal operation I'm not aware of? Thanks!
ProgressDialog progress; //Global, declared somewhere else
final Object flag = new Object();
Thread progressThread;
//More Code...
progress.show();
progress.setMax(auxMobile.size() + auxStatic.size() );
progress.setProgress(0);
progressThread = new Thread(new Runnable() {
@Override
public void run() {
try {
synchronized (flag) {
while (progress.getProgress() < progress.getMax()) {
progress.incrementProgressBy(1);
flag.wait();
}
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
progressThread.start();
try {
for(int i=0; i<auxStatic.size(); i++) {
//More Code...
flag.notify();
}
for(int i=0; i<auxMobile.size(); i++){
//More Code...
flag.notify();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
