Mediastore.images.media.insertimage Return Null Sometimes

I encountered strange problem, when calling MediaStore.Images.Media.insertImage, it returns null uri sometimes, but I found it can work well one or two times, I can't find it's rul

Solution 1:

I had a similar issue. If your device is using Marshmallow, and your target API is 23, you need to ask for permission (Manifest.permission.WRITE_EXTERNAL_STORAGE) at run time.

See also: https://medium.com/ribot-labs/exploring-the-new-android-permissions-model-ba1d5d6c0610#.y84j1nene

Solution 2:

onclick check for android version and permission as below:

@OverridepublicvoidonClick(View view)
{

 intMyVersion= Build.VERSION.SDK_INT;
    if (MyVersion > Build.VERSION_CODES.LOLLIPOP_MR1) {
            checkIfAlreadyhavePermission();
    }
Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
//Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(newFile("/sdcard/1test.jpg")));
startActivityForResult(intent, 1);
}

and checkIfAlreadyhavePermission() method body will be as below:

privatebooleancheckIfAlreadyhavePermission() {


            checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
                 if((checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
                            != PackageManager.PERMISSION_GRANTED))) {

                    //show dialog to ask permissionActivityCompat.requestPermissions(this,
                            newString[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
                                    android.Manifest.permission.wRITE_EXTERNAL_STORAGE},
                            1);
                    returntrue;
            } elsereturnfalse;

    }