尝试打开“活动”时，我的应用在某些设备上崩溃。并非总是仅在某些设备上出现此问题。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.pickerManager = GlobalHolder.getInstance().getPickerManager();
    this.pickerManager.setactivity(Tempactivity.this); // <== line with error
    this.pickerManager.pickPhotoWithPermission();
}

Stacktrace：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.chillihaze.deskeep/com.libraries.imagepicker.Tempactivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.libraries.imagepicker.e.a(android.app.activity)' on a null object reference
at android.app.activityThread.performLaunchactivity(activityThread.java:3122)
at android.app.activityThread.handleLaunchactivity(activityThread.java:3261)
at android.app.servertransaction.LaunchactivityItem.execute(LaunchactivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.activityThread$H.handleMessage(activityThread.java:1977)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.activityThread.main(activityThread.java:6923)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:870)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.libraries.imagepicker.e.a(android.app.activity)' on a null object reference
at com.libraries.imagepicker.Tempactivity.onCreate(SourceFile:3)
at android.app.activity.performCreate(activity.java:7148)
at android.app.activity.performCreate(activity.java:7139)
at android.app.Instrumentation.callactivityOnCreate(Instrumentation.java:1293)
at android.app.activityThread.performLaunchactivity(activityThread.java:3102)

我无法在设备上重现该错误，因此无法对其进行测试。