Kivy aplication crashes on splash screen

Question

I have a simple app for android written in python 2.7.12 32-bit, kivy 1.9.1 on ubuntu 16.04 64. I am able to build the app with buildozer debug deploy but the app won't start. It crashes while loading itself but stays in the 'background'. I inspected the logcat and there seems to be only one error:

build.xml: Failed to find version-tag string. File must be updated. In order to not erase potential customizations, the file will not be automatically regenerated. If no changes have been made to the file, delete it manually and run the command again. If you have made customizations to the build process, the file must be manually updated. It is recommended to:

1. Copy current file to a safe location.
2. Delete original file.
3. Run command again to generate a new file.
4. Port customizations to the new file, by looking at the new rules file located at /tools/ant/build.xml
5. Update file to contain version-tag: custom to prevent file from being rewritten automatically by the SDK tools.

I have been searching for the solution and even found some related topics but none of them seems to be related to building with buildozer. I would do what the above list instructs but i was unable to locate the /tools/ant/build.xml.

I am adding the output of terminal where app dies or at least I think it happens here:

12-25 09:58:34.762 1142 1153 I ActivityManager: Start proc 4509:org.test.localmapper:python/u0a220 for activity org.test.localmapper/org.renpy.android.PythonActivity 12-25 09:58:34.920 1142 1152 I ActivityManager: Killing 4384:com.sonymobile.android.addoncamera.styleportrait/u0a67 (adj 15): empty #17 12-25 09:58:35.120 1142 1162 I WindowManager: Focus moving from null to Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} 12-25 09:58:35.121 1142 1162 I WindowManager: Gaining focus: Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} 12-25 09:58:35.140 1142 2380 I ActivityManager: Start proc 4532:com.swiftkey.swiftkeyconfigurator/u0a178 for broadcast com.swiftkey.swiftkeyconfigurator/.PackageRemovedReceiver 12-25 09:58:35.144 1142 2380 I ActivityManager: Killing 4399:com.sonymobile.cameracommon/u0a27 (adj 15): empty #17 12-25 09:58:35.265 1142 2140 I RuntimeSkinInfo: com.sonymobile.runtimeskinning.LAF_VERSION in android blocks runtime skin from being applied, version value=2 12-25 09:58:35.265 1142 2140 I RuntimeSkinInfo: com.sonymobile.runtimeskinning.LAF_VERSION in com.android.systemui blocks runtime skin from being applied, version value=2 12-25 09:58:35.343 1142 1568 W ActivityManager: Skip forceProcessStateUpTo() to newState 11 12-25 09:58:35.367 1142 1152 I ActivityManager: Killing 3951:com.android.exchange/u0a36 (adj 15): empty #17 12-25 09:58:35.436 1142 2383 I NetworkIdentity: buildNetworkIdentity: 12-25 09:58:35.436 1142 2383 I NetworkIdentity: networkId = GNX324C50 12-25 09:58:35.448 1142 1357 I ActivityManager: Start proc 4562:com.sony.nfx.app.sfrc/u0a182 for broadcast com.sony.nfx.app.sfrc/.SocialifeUpdateReceiver 12-25 09:58:35.633 1142 1152 W ActivityManager: Skip forceProcessStateUpTo() to newState 11 12-25 09:58:35.918 1142 2144 I ActivityManager: Start proc 4584:com.google.android.apps.photos/u0a132 for broadcast com.google.android.apps.photos/.backgroundsignin.BackgroundSignInBroadcastReceiver 12-25 09:58:35.920 1142 2144 I ActivityManager: Killing 4053:com.sonymobile.runtimeskinning.core/u0a185 (adj 15): empty #17 12-25 09:58:36.077 1142 2146 W ActivityManager: Skip forceProcessStateUpTo() to newState 11 12-25 09:58:36.522 1142 1569 I RuntimeSkinInfo: com.sonymobile.runtimeskinning.LAF_VERSION in android blocks runtime skin from being applied, version value=2 12-25 09:58:36.522 1142 1569 I RuntimeSkinInfo: com.sonymobile.runtimeskinning.LAF_VERSION in com.android.systemui blocks runtime skin from being applied, version value=2 12-25 09:58:36.720 1142 1152 I WindowState: WIN DEATH: Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} 12-25 09:58:36.721 1142 1152 W WindowManager: Force-removing child win Window{56b40f7 u0 SurfaceView} from container Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} 12-25 09:58:36.729 1142 1568 W WindowManager: Failed looking up window 12-25 09:58:36.729 1142 1568 W WindowManager: java.lang.IllegalArgumentException: Requested window android.os.BinderProxy@8ea04f6 does not exist 12-25 09:58:36.729 1142 1568 W WindowManager: at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:9194) 12-25 09:58:36.729 1142 1568 W WindowManager: at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:9185) 12-25 09:58:36.729 1142 1568 W WindowManager: at com.android.server.wm.WindowState$DeathRecipient.binderDied(WindowState.java:1209) 12-25 09:58:36.729 1142 1568 W WindowManager: at android.os.BinderProxy.sendDeathNotice(Binder.java:566) 12-25 09:58:36.729 1142 1568 I WindowState: WIN DEATH: null 12-25 09:58:36.731 1142 2146 I ActivityManager: Process org.test.localmapper:python (pid 4509) has died 12-25 09:58:36.731 1142 2146 W ActivityManager: Force removing ActivityRecord{1afe009 u0 org.test.localmapper/org.renpy.android.PythonActivity t1334}: app died, no saved state 12-25 09:58:36.742 1142 1162 I WindowManager: Focus moving from Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} to null 12-25 09:58:36.742 1142 1162 I WindowManager: Losing focus: Window{d1f6d91 u0 org.test.localmapper/org.renpy.android.PythonActivity} 12-25 09:58:36.767 1142 1162 I WindowManager: Focus moving from null to Window{93f1d2e u0 com.sonyericsson.home/com.sonymobile.home.HomeActivity} 12-25 09:58:36.767 1142 1162 I WindowManager: Gaining focus: Window{93f1d2e u0 com.sonyericsson.home/com.sonymobile.home.HomeActivity} 12-25 09:58:36.777 1142 2377 W InputMethodManagerService: Got RemoteException sending setActive(false) notification to pid 4509 uid 10220 12-25 09:58:36.925 1142 1568 W BroadcastQueue: Permission Denial: broadcasting Intent { act=android.intent.action.USER_PRESENT flg=0x24000010 } from com.android.systemui (pid=14393, uid=10068) is not exported from uid 10048 due to receiver com.sonymobile.mx.android/.receivers.StopMessageReceiver 12-25 09:58:36.947 1142 2146 I ActivityManager: Start proc 4613:com.sonymobile.ree/u0a52 for broadcast com.sonymobile.ree/.service.UserPresentReceiver 12-25 09:58:37.122 1142 2382 W ActivityManager: Skip forceProcessStateUpTo() to newState 11 12-25 09:58:37.221 1142 1569 I ActivityManager: Killing 4066:com.sonyericsson.updatecenter/u0a71 (adj 15): empty #17 12-25 09:58:37.334 1142 2377 I ActivityManager: Start proc 4633:deezer.android.app/u0a200 for broadcast deezer.android.app/com.deezer.push.BootParseBroadcastReceiver 12-25 0

Thank you!

Answer 1

Sounds like version string in buildozer.spec Explained here, answer by eviltnan : https://stackoverflow.com/a/20898873/7153696