Exception Decoding Bitmap Error in Android: Attempt to invoke virtual method 'android.os.ParcelFileDescriptor

I have an application that is having some buttons that implement some features.

Two of them is:

1. Share Image - The images provided by the app which users can share.

2. "Set As" - Users cal also utilize "set as" features (Set As wallpaper, contact picture, etc.).

The app is currently not live, so I tested it's apk on my mobile and 2-3 other Android mobiles. The app is ruing correctly only on my device, but here's what I found,

1. "Share" and "Set As" isn't working on emulator - Log cat ERROR shown below.

2. "Share" and "Set As" working perfectly on my Android mobile - Android 5.0. It creates a folder in "Phone Storage" and saves image according to my code shown below.

3. "Share" and "Set As" isn't working on Android 6.0. It is not even creating folder.

"Log cat ERROR FOR Emulator... i..e point 1 above"

• Error after clicking "Share" in Emulator

java.io.FileNotFoundException: "/storage/emulated/0/MyFolder/myimg.png";: open failed: ENOENT (No such file or directory)

• Error after clicking "Set As" in Emulator

  08-22 21:27:34.526 2208-2208/? E/UriImage: got exception decoding bitmap java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.ParcelFileDescriptor android.content.ContentResolver.openFileDescriptor(android.net.Uri, java.lang.String)' on a null object reference at com.android.camera.Util.makeInputStream(Util.java:336) at com.android.camera.Util.makeBitmap(Util.java:307) at com.android.camera.Util.makeBitmap(Util.java:299) at com.android.camera.gallery.UriImage.fullSizeBitmap(UriImage.java:94) at com.android.camera.gallery.UriImage.fullSizeBitmap(UriImage.java:86) at com.android.camera.gallery.UriImage.thumbBitmap(UriImage.java:120) at com.android.camera.CropImage.onCreate(CropImage.java:143) at android.app.Activity.performCreate(Activity.java:6237) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)

Integer Arrays for images

 Integer[] imageIDs = {
        R.drawable.image1,
        R.drawable.image2,
       .
       .
       .

}

SHARE BUTTON code snippet

           // Here, I am getting images from the Integer array I created
            bitmap = BitmapFactory.decodeResource(getResources(),imageIDs[i]);

            File filepath = Environment.getExternalStorageDirectory();

            // Creates new folder with name "MyFolder"
            File dir = new File(filepath.getAbsolutePath() + "/MyFolder/");
            dir.mkdirs();

            // Image saves with the following name
            File file = new File(dir, "myimg.png");

"Set As" button code snippet

    // Here, I am getting images from the Integer array I created
    bitmap = BitmapFactory.decodeResource(getResources(),imageIDs[i]);

    Rest code I added from the [following thread][1] on Stack Overflow.: 

    Here, I have added the following path:
      String absolutepath="/storage/emulated/0/MyFolder/myimg.png";