Why am I getting this error "Expected resource of type raw" in Android Studio?

Question

I was trying to set the default wallpaper by using a button but for some reason when i set the InputStream in the OnCreate Method, i get this error "expected resource of type raw". I am referencing the drawable folder and using the icon.png image which is in the drawable folder. I was following the tutorials in the NewBoston Series and it seems to work fine for Travis but for some reason mine doesnt work in Android Studio. What could be the error? Thanks

Camera.java:

package com.example.user.cameraapplication;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.Switch;

import java.io.IOException;
import java.io.InputStream;

/**
 * Created by user on 16-08-2015.
 */
public class Camera extends Activity implements View.OnClickListener{

    ImageView iv;
    Button b1,b2;
    ImageButton img;
    Intent i;
    final static  int cameractivity = 0;
    Bitmap b;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.photo);
        inititalize();
        InputStream is = getResources().openRawResource(R.drawable.icon);
        b = BitmapFactory.decodeStream(is);
    }

    private void inititalize() {
        iv = (ImageView)findViewById(R.id.iView1);
        img = (ImageButton)findViewById(R.id.imgbtn);
        b1 = (Button)findViewById(R.id.btn1);
        b2 = (Button)findViewById(R.id.btn2);

        b1.setOnClickListener(this);
        b2.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch(v.getId()){
            case R.id.btn1:
                try {
                    getApplicationContext().setWallpaper(b);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.imgbtn:
                i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(i,cameractivity);

                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode==RESULT_OK)
        {
            Bundle extras = data.getExtras();
            b = (Bitmap)extras.get("data");
           iv.setImageBitmap(b);

        }
    }
}

Image:

Consider [this](http://stackoverflow.com/questions/25572647/android-openrawresource-not-working-for-a-drawable) — DSlomer64, Aug 16 '15 at 18:32

score 33 · Accepted Answer · edited Jun 20 '20 at 09:12

33

The error occurred because Android Studio expected a resource file of type raw.

Solution 1:

Create a new folder in your "res" folder called "raw", and put your icon there. The raw folder should contain all your media files of your app.

Then replace

InputStream is = getResources().openRawResource(R.drawable.icon);

with

InputStream is = getResources().openRawResource(R.raw.icon);

Solution 2:

Another solution is to do it like this. This doesn't require you to create a raw folder:

InputStream is = getResources().openRawResource(+ R.drawable.icon);

edited Jun 20 '20 at 09:12

Community

1
1

answered Aug 16 '15 at 18:30

Hussein El Feky

6,627
5
44
57

2

Any explanation why that happens? – Ondrej Tokar Feb 18 '16 at 15:30
@OndrejTokar I have updated my answer with the reason. Please check it. – Hussein El Feky Feb 18 '16 at 15:57
5

@HusseinElFeky why does '+ R.drawable.icon' fix the issue? Thanks! – newbyca May 29 '16 at 06:01
@newbyca It somehow converts the drawable file into a raw file, without needing to create a raw folder. – Hussein El Feky May 29 '16 at 20:58
1

I think as the function `openRawResource` is expecting an `int` as the argument, When we pass `R.drawable.something` the ide errors out that it needs a raw resource as it's able to identify that it's not a `raw` resource. When `+ R.drawable.something` is used it would turn out to be an `int` but it cannot determine what kind of `int` i.e. either a `drawable` or `raw`. – Phani Rithvij Jul 12 '19 at 11:18
See my answer for the explanation – Lev Leontev Oct 18 '19 at 21:29

score 12 · Answer 2 · answered Aug 16 '15 at 18:36

12

Replace

InputStream is = getResources().openRawResource(R.drawable.icon);

With

InputStream is = getResources().openRawResource(+ R.drawable.icon);

answered Aug 16 '15 at 18:36

Pavlo Zin

762
6
25

Lev Leontev · Answer 3 · 2019-10-18T21:35:02.147

Let's look at documentation for openRawResource

Open a data stream for reading a raw resource. This can only be used with resources whose value is the name of an asset files -- that is, it can be used to open drawable, sound, and raw resources; it will fail on string and color resources.

So the solution - leave it as it is, i. e.

InputStream is = getResources().openRawResource(R.drawable.icon);

The inspection in Android Studio is just wrong. You can add

@SuppressWarnings("ResourceType")

to hide the error.

Note

Using + R.drawable.icon just fools the inspection, because it can no longer determine which kind of resource it is.

Why am I getting this error "Expected resource of type raw" in Android Studio?

3 Answers3

Solution 1:

Solution 2:

Linked