I am Trying To upload image to server from gallery and camera.When i Choose image from gallery to upload to server its Work Perfactly.But when i Select camera captured Image for upload to server Its Crash And Showing the error.

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getScheme()' on a null object reference

At OnActivityResult.

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (requestCode == PICK_IMAGE && resultCode == RESULT_OK

&& null != data) {

Uri selectedImage = data.getData();

String[] filePathColumn = { MediaStore.Images.Media.DATA };

Cursor cursor = getContentResolver().query(selectedImage,

filePathColumn, null, null, null);

cursor.moveToFirst();

int columnIndex = cursor.getColumnIndex(filePathColumn[0]);

String picturePath = cursor.getString(columnIndex);

cursor.close();

decodeFile(picturePath);

new ImageUploadTask().execute();

}else {

Toast.makeText(getApplicationContext(), "User Canceled",

Toast.LENGTH_LONG).show();

}

}

i got the error on this line in onActivityResult

Cursor cursor = getContentResolver().query(selectedImage,

filePathColumn, null, null, null);

cursor.moveToFirst();

The method i used for open camera on button click.

loadimage.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

AlertDialog.Builder builder = new AlertDialog.Builder(Add_Info.this);

builder.setMessage("Select Image From")

.setCancelable(true)

.setPositiveButton("Camera", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int id) {

Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(intent, CAMERA_REQUEST);

mImageCaptureUri = Uri.fromFile(new File(Environment

.getExternalStorageDirectory(), "tmp_avatar_"

+ String.valueOf(System.currentTimeMillis())

+ ".jpg"));

}

})

.setNegativeButton("Gallery", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int id) {

Intent i = new Intent(

Intent.ACTION_PICK,

android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

startActivityForResult(i, RESULT_LOAD_IMAGE);

}

});

AlertDialog alert = builder.create();

alert.show();

}

});

Help Me solve this problem.I don't know How t get this error even after i used is already in my Previous PROJECT.

THANKS in Advance

解决方案

I had same issue when working with Camera api and Intent of onActivityResult, finally I found out it depends on your android device version, in Android M (Marshmallow - 6.0–6.0.1 ) onActivityResult intent is like below :

requestCode : 230 resultCode : -1 intent :Intent{dat=file:///storage/emulated/0/Pictures/Rahnama/IMG_20160508_121332_1519065 564.jpg typ=image/jpeg } RESULT_OK : -1

and for android versions lower than Marshmallow:

requestCode : 230 resultCode : -1 intent : Intent { dat=content://media/external/images/media/309 (has extras) } RESULT_OK : -1

I think you must check android version onActivityResult and the for android versions Marshmallow to get direct file from path in the Uri and Intent:

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (Build.VERSION.SDK_INT == Build.VERSION_CODES.M){

final Uri data = intent.getData();

final File file = new File(data.getPath());

// now you can upload your image file

}else{

// in android version lower than M your method must work

}

I hope it can be useful for you.