java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.unlock()' on a null object reference

Stack Overflow | user6650650 | 4 months ago
  1. 0

    Camera object always returning null

    Stack Overflow | 4 months ago | user6650650
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.unlock()' on a null object reference
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    My camera for capturing video

    Stack Overflow | 1 month ago | mandy Yiu
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.unlock()' on a null object reference
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    how i display my list in mode list or grid

    Stack Overflow | 2 months ago | user3451238
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sajdour.fcg_sajdour/com.example.sajdour.fcg_sajdour.UI.Videos}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference
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    Bitmap not Showing in Dialog

    Stack Overflow | 2 months ago | Williams Tobi
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageBitmap(android.graphics.Bitmap)' on a null object reference
  6. 0

    No Lockscreen after Reboot on Samsung S7 / S7 Edge

    GitHub | 2 months ago | breadcan
    java.lang.NullPointerException: Attempt to invoke virtual method 'void tk.wasdennnoch.androidn_ify.extracted.systemui.qs.PagedTileLayout.removeAll()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.hardware.Camera.unlock()' on a null object reference

      at com.myapplication.CamPreview.prepareVideoRecorder()
    2. com.myapplication
      CamPreview$1.onClick
      1. com.myapplication.CamPreview.prepareVideoRecorder(CamPreview.java:100)
      2. com.myapplication.CamPreview.access$500(CamPreview.java:20)
      3. com.myapplication.CamPreview$1.onClick(CamPreview.java:60)
      3 frames
    3. Android Platform
      ActivityThread.main
      1. android.view.View.performClick(View.java:4756)
      2. android.view.View$PerformClick.run(View.java:19761)
      3. android.os.Handler.handleCallback(Handler.java:739)
      4. android.os.Handler.dispatchMessage(Handler.java:95)
      5. android.os.Looper.loop(Looper.java:135)
      6. android.app.ActivityThread.main(ActivityThread.java:5264)
      6 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:900)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:695)
      2 frames