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treehouses / remote

⚡ control Raspberry Pi from Android Device through Bluetooth ⚡
https://play.google.com/store/apps/details?id=io.treehouses.remote
GNU Affero General Public License v3.0
64 stars 29 forks source link

Running Android app in Virtual Device #23

Closed lorugant closed 5 years ago

lorugant commented 6 years ago

The app gets crashed when trying to run on a Virtual Device. 

02-08 17:59:11.263 2383-2383/? E/AndroidRuntime: FATAL EXCEPTION: main
   Process: io.treehouses.remote, PID: 2383
   java.lang.RuntimeException: Unable to start activity ComponentInfo{io.treehouses.remote/io.treehouses.remote.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothAdapter.isEnabled()' on a null object reference
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
       at android.app.ActivityThread.-wrap11(ActivityThread.java)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:148)
       at android.app.ActivityThread.main(ActivityThread.java:5417)
       at java.lang.reflect.Method.invoke(Native Method)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothAdapter.isEnabled()' on a null object reference
       at io.treehouses.remote.BluetoothChatFragment.onStart(BluetoothChatFragment.java:136)
       at android.support.v4.app.Fragment.performStart(Fragment.java:2369)
       at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1458)
       at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1740)
       at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1809)
       at android.support.v4.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3217)
       at android.support.v4.app.FragmentManagerImpl.dispatchStart(FragmentManager.java:3176)
       at android.support.v4.app.FragmentController.dispatchStart(FragmentController.java:203)
       at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:562)
       at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237)
       at android.app.Activity.performStart(Activity.java:6253)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
       at android.app.ActivityThread.-wrap11(ActivityThread.java) 
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
       at android.os.Handler.dispatchMessage(Handler.java:102) 
       at android.os.Looper.loop(Looper.java:148) 
       at android.app.ActivityThread.main(ActivityThread.java:5417) 
       at java.lang.reflect.Method.invoke(Native Method) 
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
dogi commented 6 years ago

@lorugant thanks - I also assume that it crashes because there is no Bluetooth in the Virtual Device

TerrenceEJ commented 6 years ago

Yeah, the emulator doesn't have Bluetooth, and I think the program is trying to connect through bluetooth on startup, so that's why it crashes when it starts.