Java – libgdx android failed to start

libgdx android failed to start… here is a solution to the problem.

libgdx android failed to start

This is my first time using libgdx and I want to try the default app provided after installing gdx-setup-ui. When I hit the run button on eclipse it works fine as it shows

[2014-05-01 21:40:14 - my-gdx-game-android] Uploading my-gdx-game-android.apk onto device 'emulator-5554'
[2014-05-01 21:40:15 - my-gdx-game-android] Installing my-gdx-game-android.apk...
[2014-05-01 21:40:16 - my-gdx-game-android] Success!
[2014-05-01 21:40:16 - my-gdx-game-android] Starting activity com.me.mygdxgame.MainActivity on device emulator-5554
[2014-05-01 21:40:16 - my-gdx-game-android] ActivityManager: WARNING: linker: libdvm.so has text relocations. This is wasting memory and is a security risk. Please fix.
[2014-05-01 21:40:16 - my-gdx-game-android] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.me.mygdxgame/. MainActivity }

But unfortunately on the emulator it says, My LibGDX game has stopped.

These are shown in logCat:

05-01 17:02:04.936: D/dalvikvm(2034): Trying to load lib /data/app-lib/com.me.mygdxgame-1/libgdx.so 0xb103cb78
05-01 17:02:04.936: D/dalvikvm(2034): Added shared lib /data/app-lib/com.me.mygdxgame-1/libgdx.so 0xb103cb78
05-01 17:02:04.936: D/dalvikvm(2034): No JNI_OnLoad found in /data/app-lib/com.me.mygdxgame-1/libgdx.so 0xb103cb78, skipping init
05-01 17:02:04.936: D/AndroidRuntime(2034): Shutting down VM
05-01 17:02:04.936: W/dalvikvm(2034): threadid=1: thread exiting with uncaught exception (group=0xb0d34b20)
05-01 17:02:04.996: E/AndroidRuntime(2034): FATAL EXCEPTION: main
05-01 17:02:04.996: E/AndroidRuntime(2034): Process: com.me.mygdxgame, PID: 2034
05-01 17:02:04.996: E/AndroidRuntime(2034): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.me.mygdxgame/com.me.mygdxgame.MainActivity}: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.0
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.os.Handler.dispatchMessage(Handler.java:102)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.os.Looper.loop(Looper.java:136)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread.main(ActivityThread.java:5017)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at java.lang.reflect.Method.invokeNative(Native Method)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at java.lang.reflect.Method.invoke(Method.java:515)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at dalvik.system.NativeStart.main(Native Method)
05-01 17:02:04.996: E/AndroidRuntime(2034): Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.0
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.badlogic.gdx.backends.android.AndroidGraphics.createGLSurfaceView(AndroidGraphics.java:121)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:101)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:94)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.badlogic.gdx.backends.android.AndroidApplication.init(AndroidApplication.java:130)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.badlogic.gdx.backends.android.AndroidApplication.initialize(AndroidApplication.java:96)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at com.me.mygdxgame.MainActivity.onCreate(MainActivity.java:15)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.Activity.performCreate(Activity.java:5231)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
05-01 17:02:04.996: E/AndroidRuntime(2034):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
05-01 17:02:04.996: E/AndroidRuntime(2034):     ... 11 more

Also, I removed cfg.useGL20 = true in MainActivity.java; Ok because it keeps giving me errors, I tried to fix it quickly and it doesn’t work. I really need it to be used in an emulator because I don’t own an android device.

Solution

I was able to do this on the Macbook Air by:

  1. Open the Android Virtual Device Manager (for example, in Eclipse, it is under the Window menu).
  2. Click Edit for the device you want to use
  3. Check the Use host GPU box in the dialog box that appears, as shown in the image

Click Use Host GPU

Save and try again.

I

guess it depends on whether your computer’s graphics card supports OpenGL 2.0, but I also suspect this is common these days.

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