Android java.lang.IllegalMonitorStateException: object not locked by thread before wait()

Question

I define a global static object as a synchronization lock.

public static Object ConfirmationSynObj = new Object();

The following function i

Answer 1

@Kayaman speaks correctly, as far as I can tell, however if I may humbly suggest: java.util.concurrent can save you lots of time!

What I'd use there is a semaphore.

From the docs: "Each acquire() blocks if necessary until a permit is available, and then takes it.".

But there are other choices too- I strongly recommend using this where possible, as you should avoid lots of pit falls as in your case.

        Semaphore semaphore = new Semaphore(0);
        new Thread(new Runnable() {

            @Override
            public void run() {
                //this is a http request
                appSignInfo = getAPKSignature(context, pkinfo.packageName);
                semaphore.release();
            }
        }).start();
        try {
            semaphore.acquire();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }