java.lang.NullPointerException

[lifenautjoe]

When calling

Thumbnails.getThumbnail(
                thumbnailFolder: tempDir,
                // creates the specified path if it doesnt exist
                videoFile: postVideo.path,
                imageType: ThumbFormat.JPEG,
                quality: 30)

I get

I/FilePicker(15864): Absolute file path:/storage/emulated/0/DCIM/Camera/VID_20190828_120040.mp4
D/EGL_emulation(15864): eglCreateContext: 0xdd073820: maj 3 min 0 rcv 3
D/EGL_emulation(15864): eglMakeCurrent: 0xdd073820: ver 3 0 (tinfo 0xe4852ee0)
D/EGL_emulation(15864): eglMakeCurrent: 0xdea85a20: ver 3 0 (tinfo 0xc5535e60)
D/EGL_emulation(15864): eglMakeCurrent: 0xdd073820: ver 3 0 (tinfo 0xe4852ee0)
W/System.err(15864): java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
W/System.err(15864): 	at com.asapjay.thumbnails.ThumbnailsPlugin.userDirectory(ThumbnailsPlugin.java:126)
W/System.err(15864): 	at com.asapjay.thumbnails.ThumbnailsPlugin.buildThumbnail(ThumbnailsPlugin.java:64)
W/System.err(15864): 	at com.asapjay.thumbnails.ThumbnailsPlugin.onMethodCall(ThumbnailsPlugin.java:49)
W/System.err(15864): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:222)
W/System.err(15864): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:96)
W/System.err(15864): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:643)
W/System.err(15864): 	at android.os.MessageQueue.nativePollOnce(Native Method)
W/System.err(15864): 	at android.os.MessageQueue.next(MessageQueue.java:326)
W/System.err(15864): 	at android.os.Looper.loop(Looper.java:160)
W/System.err(15864): 	at android.app.ActivityThread.main(ActivityThread.java:6669)
W/System.err(15864): 	at java.lang.reflect.Method.invoke(Native Method)
W/System.err(15864): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
W/System.err(15864): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

[rogerhaw]

same here

[kamleshwebtech]

Any solution, you found, please share. Thanks.

[kamleshwebtech]

I am still getting below issue:

W/System.err( 2412): java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
W/System.err( 2412): 	at com.asapjay.thumbnails.ThumbnailsPlugin.userDirectory(ThumbnailsPlugin.java:138)
W/System.err( 2412): 	at com.asapjay.thumbnails.ThumbnailsPlugin.buildThumbnail(ThumbnailsPlugin.java:64)
W/System.err( 2412): 	at com.asapjay.thumbnails.ThumbnailsPlugin.onMethodCall(ThumbnailsPlugin.java:49)
W/System.err( 2412): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
W/System.err( 2412): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
W/System.err( 2412): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:738)
W/System.err( 2412): 	at android.os.MessageQueue.nativePollOnce(Native Method)
W/System.err( 2412): 	at android.os.MessageQueue.next(MessageQueue.java:329)
W/System.err( 2412): 	at android.os.Looper.loop(Looper.java:142)
W/System.err( 2412): 	at android.app.ActivityThread.main(ActivityThread.java:6375)
W/System.err( 2412): 	at java.lang.reflect.Method.invoke(Native Method)
W/System.err( 2412): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
W/System.err( 2412): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:802)

and my function is as:

getVideoUrlToThumbUrl(videoPathUrl) async {
    if (await getFileType(videoPathUrl) != CONST_APP_FILE_TYPE_VIDEO) {
      return '';
    }
    final docDirectory = await getApplicationDocumentsDirectory();
    String videothumbnailsPath = docDirectory.path + '/videothumbnails';

    // String videothumbnailsPath = CONST_APP_ED_VIDEO_PATH;

    File file = new File(videoPathUrl);
    String fileName = file.path.split('/').last;
    fileName = fileName.replaceFirst('.mp4', '.png');
    var isThumbExists =
        await io.File(videothumbnailsPath + '/' + fileName).exists();
    String vdoPath = '';
    if (isThumbExists == false) {
      vdoPath = await Thumbnails.getThumbnail(
          thumbnailFolder: videothumbnailsPath,
          videoFile: videoPathUrl,
          imageType: ThumbFormat.PNG,
          quality: 10);
    } else {
      vdoPath = videothumbnailsPath + '/' + fileName;
    }
    return vdoPath;
  }

Any solution, please share. Thanks a lot.

[marianoarga]

Same here