How do I use the Eclipse debugger in an AsyncTask when developing for Android?

Question

I'm running ADT (Android Development Tools) in Eclipse and verified that my debugger is working by putting a breakpoint in MainMenu.oncreate (class Activity). But when I put it in the first line of my AsyncTask.doInBackground, it never hits it. I know it's running because I put a Log statement in the AsyncTask and it shows up in LogCat. Any help would be appreciated as I prefer the debugger over the logging.

My versions:

Eclipse SDK Version: 3.6.1  
Build id: M20100909-0800

alt text

I just discovered that if I put some `Log.d()` within `doInBackground()` that the debugger suddenly starts hitting breakpoints !! — Someone Somewhere, Oct 09 '14 at 20:26

sargas · Accepted Answer · 2017-01-23T02:31:02.067

68

Put the following code fragment in the beginning of doInBackground:

android.os.Debug.waitForDebugger();

Then when you set a breakpoint in that thread, eclipse will find it.

edited Jan 23 '17 at 02:31

answered Jan 22 '11 at 22:13

sargas

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As a note, when **not** debugging I had to comment this line out in order for it to run. – Suragch Sep 05 '14 at 06:16
I can see that this is clearly the method to be able to do this, but I am not managing to hit the breakpoints even after putting this at the beginning of doInBackground. Does anyone have any idea why this might be? – James Meade Mar 18 '15 at 16:35

score 9 · Answer 2 · answered Dec 04 '14 at 07:38

in addition to sargas's answer , because in Run mode you could get an error if you forget to comment that line, you could use the following:

if(android.os.Debug.isDebuggerConnected())
    android.os.Debug.waitForDebugger();

so it takes care of itself.

How do I use the Eclipse debugger in an AsyncTask when developing for Android?

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