java.lang.NullPointerException: storage == null

[MuhamedFathy]

java.lang.RuntimeException: Unable to start activity ComponentInfo{net.memozz.myapplication/com.nbsp.materialfilepicker.ui.FilePickerActivity}: java.lang.NullPointerException: storage == null
                                                                          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)
                                                                          at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:134)
                                                                       Caused by: java.lang.NullPointerException: storage == null
                                                                          at java.util.Arrays$ArrayList.<init>(Arrays.java:38)
                                                                          at java.util.Arrays.asList(Arrays.java:155)
                                                                          at com.nbsp.materialfilepicker.utils.FileUtils.getFileListByDirPath(FileUtils.java:16)
                                                                          at com.nbsp.materialfilepicker.ui.DirectoryFragment.initFilesList(DirectoryFragment.java:84)
                                                                          at com.nbsp.materialfilepicker.ui.DirectoryFragment.onViewCreated(DirectoryFragment.java:79)
                                                                          at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:988)
                                                                          at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
                                                                          at android.app.BackStackRecord.run(BackStackRecord.java:793)
                                                                          at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535)
                                                                          at android.app.FragmentController.execPendingActions(FragmentController.java:325)
                                                                          at android.app.Activity.performStart(Activity.java:6267)
                                                                          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) 
                                                                          at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:134) 

[heatherSnepenger]

The problem is that you haven't requested permission for Android version 6+ https://github.com/nbsp-team/MaterialFilePicker/issues/13

[alensiljak]

I'm getting these also on Android 4.2 so it can't be just the Android 6+ permissions.

Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.money.manager.ex/com.nbsp.materialfilepicker.ui.FilePickerActivity}: java.lang.NullPointerException: storage == null
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3253)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)
       at android.app.ActivityThread.access$1100(ActivityThread.java:221)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:158)
       at android.app.ActivityThread.main(ActivityThread.java:7225)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by java.lang.NullPointerException: storage == null
       at java.util.Arrays$ArrayList.<init>(Arrays.java:38)
       at java.util.Arrays.asList(Arrays.java:155)
       at com.nbsp.materialfilepicker.utils.FileUtils.getFileListByDirPath(FileUtils.java:16)
       at com.nbsp.materialfilepicker.ui.DirectoryFragment.initFilesList(DirectoryFragment.java:84)
       at com.nbsp.materialfilepicker.ui.DirectoryFragment.onViewCreated(DirectoryFragment.java:79)
       at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:998)
       at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1163)
       at android.app.BackStackRecord.run(BackStackRecord.java:793)
       at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1552)
       at android.app.FragmentController.execPendingActions(FragmentController.java:325)
       at android.app.Activity.performStart(Activity.java:6914)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3216)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)
       at android.app.ActivityThread.access$1100(ActivityThread.java:221)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:158)
       at android.app.ActivityThread.main(ActivityThread.java:7225)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

[ddudek]

The issue is not with android M or any other. I was able to recreate it today on Samsung J5 Android 5.1.1, but in my crashlogs from production this exact stactrace is visible also on 4.2.2.

Would be nice to add error handling when listing directory returns "null" due to no access

Easy steps to reproduce: Environment: stock Samsung J5, android 5.1.1

1. use root "/" for start directory, example: Intent filePickerIntent = new Intent(context, FilePickerActivity.class); filePickerIntent.putExtra(FilePickerActivity.ARG_START_PATH, "/");
2. navigate to some directory with no access, for me this was for example "/cache", "/confg"
3. crash occurs:

                  Process: com.jobartis.staging, PID: 18417
                  java.lang.NullPointerException: storage == null
                      at java.util.Arrays$ArrayList.<init>(Arrays.java:38)
                      at java.util.Arrays.asList(Arrays.java:155)
                      at com.nbsp.materialfilepicker.utils.FileUtils.getFileListByDirPath(FileUtils.java:16)
                      at com.nbsp.materialfilepicker.ui.DirectoryFragment.initFilesList(DirectoryFragment.java:84)
                      at com.nbsp.materialfilepicker.ui.DirectoryFragment.onViewCreated(DirectoryFragment.java:79)
                      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:919)
                      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
                      at android.app.BackStackRecord.run(BackStackRecord.java:834)
                      at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1470)
                      at android.app.FragmentManagerImpl$1.run(FragmentManager.java:452)
                      at android.os.Handler.handleCallback(Handler.java:739)
                      at android.os.Handler.dispatchMessage(Handler.java:95)
                      at android.os.Looper.loop(Looper.java:145)
                      at android.app.ActivityThread.main(ActivityThread.java:6934)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:372)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)```