java.lang.RuntimeException: Unable to resume activity with java.lang.IllegalArgumentException

Question

Recently I sometimes got this exception when MainActivity called onResume().

java.lang.RuntimeException: Unable to resume activity {com.qau4d.c35s3.androidapp/com.xxx.XXX.XXX.MainActivity}: java.lang.IllegalArgumentException
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3400)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3440)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1510)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: java.lang.IllegalArgumentException
at android.os.Parcel.readException(Parcel.java:1687)
at android.os.Parcel.readException(Parcel.java:1636)
at android.app.ActivityManagerProxy.isTopOfTask(ActivityManagerNative.java:5475)
at android.app.Activity.isTopOfTask(Activity.java:5961)
at android.app.Activity.onResume(Activity.java:1252)
at com.qau4d.c35s3.androidapp.onResume(XActivity.java:29)
at com.qau4d.c35s3.androidapp.onResume(MainActivity.java:196)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1269)
at android.app.Activity.performResume(Activity.java:6768)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3377)

Both in MainActivity and super class XActivity, only super.onResume(); is called. It's really strange to get this exception after a long time normal development.I checked some relative reference material but nothing got.

@Keyson Chous, post the code what are you performing in `onResume()` — azizbekian, Mar 13 '17 at 08:43
What is the android sdk version you are using? ever since it was working normal, what changes have you done on the project structure (Like ui theme)? — Aram Tchekrekjian, Mar 13 '17 at 08:48
Got the same error from users. Happening only on Android 7.1.1. The app is compiled with SDK 25, AppCompat v7 25.3.0. — KoreanDude, Mar 19 '17 at 04:02
Same problem here, report from API 24, 25. The exception is thrown from `super.onResume()`. — Kimi Chiu, Aug 11 '17 at 02:46
It's impossible to help you if you doesn't post source code. Please share some source code and we gonna help you. — Valentin Michalak, Dec 11 '17 at 09:36
Were you able to figure out a reproduction steps for this problem? I guess this would be useful... — iluu, Jun 05 '18 at 15:53
Anyone able to fix this issue? I am facing it in my new app. — venkat, Jul 08 '18 at 11:16
Google issue: https://issuetracker.google.com/issues/66849632 — StepanM, Oct 31 '18 at 17:42
@user1269737 your answewa should be accepted one, because it is a bug in support library. I would give you +1 if I could for this — Karol Żygłowicz, Feb 26 '19 at 12:32

score 10 · Answer 1 · answered Jan 16 '18 at 07:24

In the method Activity#isTopOfTask we can see:

private boolean isTopOfTask() {
    if (mToken == null || mWindow == null) {
        return false;
    }
    try {
        return ActivityManager.getService().isTopOfTask(getActivityToken());
    } catch (RemoteException e) {
        return false;
    }
}

And in ActivityManagerService#isTopOfTask we can found:

@Override
public boolean isTopOfTask(IBinder token) {
    synchronized (this) {
        ActivityRecord r = ActivityRecord.isInStackLocked(token);
        if (r == null) {
            throw new IllegalArgumentException();
        }
        return r.task.getTopActivity() == r;
    }
}

So, I think that ActivityRecord is null.But I don't know why it is null....

what is the solution for this issue? – Girish Aug 22 '19 at 14:41 — Girish, Aug 22 '19 at 14:41

Stephen C · Answer 2 · 2018-08-14T23:41:09.000

There is insufficient information in your question to determine the cause of the java.lang.IllegalArgumentException, Unfortunately the android ActivityThread doesn't log the stacktrace of that exception, and the exception message appears to be empty.

However, it looks like there is a way forward. The exception is handled by the following code in the ActivityThread::performResumeActivity method:

        } catch (Exception e) {
            if (!mInstrumentation.onException(r.activity, e)) {
                throw new RuntimeException(
                    "Unable to resume activity "
                    + r.intent.getComponent().toShortString()
                    + ": " + e.toString(), e);
            }
        }

If you register an Instrumentation class for your activity, it should be possible to use an onException method to log the stacktrace for the causal exception. Another possibility is to use Thread.setUncaughtExceptionHandler to set a handler for the thread in which the IllegalArgumentException is thrown.

These won't solve the problem (!) but it will get you a step closer to a solution.

java.lang.RuntimeException: Unable to resume activity with java.lang.IllegalArgumentException

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