READ_EXTERNAL_STORAGE permission for Android

JavaAndroidAudio PlayerAndroid External-StorageAndroid Music-Player

Java Problem Overview

I'm trying to access media files (music) on the users device to play them; an easy "hello world"-music player app.

I've followed some tutorials and they basically give the same code. But it won't work; it keeps crashing and telling me:

error.....
Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/audio/media from pid=27696, uid=10059 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
....

Now, this is my manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest
    xmlns:android="http://schemas.android.com/apk/res/android"
    package="slimsimapps.troff" >

    <uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>


<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
</manifest>

This is my Java-method:

public void initialize() {
    ContentResolver contentResolver = getContentResolver();
    Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    Cursor cursor = contentResolver.query(uri, null, null, null, null);
    if (cursor == null) {
        // query failed, handle error.
    } else if (!cursor.moveToFirst()) {
        // no media on the device
    } else {
        do {
            addSongToXML(cursor);
        } while (cursor.moveToNext());
    }
}

I have tried:

To put this at different places in the manifest file:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE”/>

To add android:maxSdkVersion at Read external storage premission:

<uses-permission
    android:name="android.permission.READ_EXTERNAL_STORAGE"
    android:maxSdkVersion="21" />

To put this in the manifest / application / activity-tag:

android:exported=“true”

To put grantUriPremission between uri and cursro in the javamethod:

grantUriPermission(null, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);

To use this, it won't crash, but the cursor becomes null:

uri = MediaStore.Audio.Media.getContentUri("EXTERNAL_CONTENT_URI”);

To use INTERNAL content uri, this works as expected, but it only gives "OS-sounds" such as shutter-sound, low-battery-sound, button-click and such:

uri = MediaStore.Audio.Media.INTERNAL_CONTENT_URI;

Pleas help, this should not be a hard problem i know, but i feel like such a beginner!

I have read and tried (or considered them to be not applicable for my problem):

Stack trace:

09-08 06:59:36.619    2009-2009/slimsimapps.troff D/AndroidRuntime﹕ Shutting down VM
    --------- beginning of crash
09-08 06:59:36.619    2009-2009/slimsimapps.troff E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: slimsimapps.troff, PID: 2009
    java.lang.IllegalStateException: Could not execute method for android:onClick
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4452)
            at android.view.View.performClick(View.java:5198)
            at android.view.View$PerformClick.run(View.java:21147)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Method.invoke(Native Method)
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4447)
            at android.view.View.performClick(View.java:5198)
            at android.view.View$PerformClick.run(View.java:21147)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/audio/media from pid=2009, uid=10059 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
            at android.os.Parcel.readException(Parcel.java:1599)
            at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
            at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
            at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
            at android.content.ContentResolver.query(ContentResolver.java:491)
            at android.content.ContentResolver.query(ContentResolver.java:434)
            at slimsimapps.troff.MainActivity.initialize(MainActivity.java:106)
            at slimsimapps.troff.MainActivity.InitializeExternal(MainActivity.java:80)
            at java.lang.reflect.Method.invoke(Native Method)
            at android.view.View$DeclaredOnClickListener.onClick(View.java:4447)
            at android.view.View.performClick(View.java:5198)
            at android.view.View$PerformClick.run(View.java:21147)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5417)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    --------- beginning of system

Java Solutions

Solution 1 - Java

You have two solutions for your problem. The quick one is to lower targetApi to 22 (build.gradle file). Second is to use new and wonderful ask-for-permission model:

if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
        != PackageManager.PERMISSION_GRANTED) {

    // Should we show an explanation?
    if (shouldShowRequestPermissionRationale(
            Manifest.permission.READ_EXTERNAL_STORAGE)) {
        // Explain to the user why we need to read the contacts
    }

    requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
            MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);

    // MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an
    // app-defined int constant that should be quite unique

    return;
}

Sniplet found here: https://developer.android.com/training/permissions/requesting.html

Solutions 2: If it does not work try this:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
    && ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
        REQUEST_PERMISSION);

return;

}

and then in callback

@Override
public void onRequestPermissionsResult(final int requestCode, @NonNull final String[] permissions, @NonNull final int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == REQUEST_PERMISSION) {
    if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        // Permission granted.
    } else {
        // User refused to grant permission.
    }
}
}

that is from comments. thanks

Solution 2 - Java

You have to ask for the permission at run time:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
		&& ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
	ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
			REQUEST_PERMISSION);
	dialog.dismiss();
	return;
}

And in the callback below you can access the storage without a problem.

@Override
public void onRequestPermissionsResult(final int requestCode, @NonNull final String[] permissions, @NonNull final int[] grantResults) {
	super.onRequestPermissionsResult(requestCode, permissions, grantResults);
	if (requestCode == REQUEST_PERMISSION) {
		if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
		    // Permission granted.
		} else {
            // User refused to grant permission.
        }
	}
}

Solution 3 - Java

Step1: add permission on android manifest.xml

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Step2: onCreate() method

int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);

    if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_MEDIA);
    } else {
        readDataExternal();
    }

Step3: override onRequestPermissionsResult method to get callback

 @Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_MEDIA:
            if ((grantResults.length > 0) && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
                readDataExternal();
            }
            break;

        default:
            break;
    }
}

Note: readDataExternal() is method to get data from external storage.

Thanks.

Solution 4 - Java

I also had a similar error log and here's what I did-

  1. In onCreate method we request a Dialog Box for checking permissions

     ActivityCompat.requestPermissions(MainActivity.this,
 new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},1);

  2. Method to check for the result

     @Override
 public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
 switch (requestCode) {
     case 1: {
         // If request is cancelled, the result arrays are empty.
         if (grantResults.length > 0
                 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
             // permission granted and now can proceed
          mymethod(); //a sample method called

         } else {

             // permission denied, boo! Disable the
             // functionality that depends on this permission.
             Toast.makeText(MainActivity.this, "Permission denied to read your External storage", Toast.LENGTH_SHORT).show();
         }
         return;
     }
     // add other cases for more permissions
     }
 }

The official documentation to Requesting Runtime Permissions

Solution 5 - Java

Has your problem been resolved? What is your target SDK? Try adding android;maxSDKVersion="21" to <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Solution 6 - Java

In 2021 I am facing this issue So I will solve this problem using the manifest file I add one tag inside application:

<application 
android:requestLegacyExternalStorage="true"
/>

NOTE: This only work until Android 10, see more information here

Solution 7 - Java

http://developer.android.com/reference/android/provider/MediaStore.Audio.AudioColumns.html

Try changing the line contentResolver.query

//change it to the columns you need
String[] columns = new String[]{MediaStore.Audio.AudioColumns.DATA}; 
Cursor cursor = contentResolver.query(uri, columns, null, null, null);

> public static final String MEDIA_CONTENT_CONTROL > > Not for use by third-party applications due to privacy of media consumption

http://developer.android.com/reference/android/Manifest.permission.html#MEDIA_CONTENT_CONTROL

try to remove the <uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL"/> first and try again?

Solution 8 - Java

Please Check below code that using that You can find all Music Files from sdcard :

public class MainActivity extends Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_animations);
	getAllSongsFromSDCARD();
	
}

public void getAllSongsFromSDCARD() {
	String[] STAR = { "*" };
	Cursor cursor;
	Uri allsongsuri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
	String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";

	cursor = managedQuery(allsongsuri, STAR, selection, null, null);

	if (cursor != null) {
		if (cursor.moveToFirst()) {
			do {
				String song_name = cursor
						.getString(cursor
								.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME));
				int song_id = cursor.getInt(cursor
						.getColumnIndex(MediaStore.Audio.Media._ID));

				String fullpath = cursor.getString(cursor
						.getColumnIndex(MediaStore.Audio.Media.DATA));

				String album_name = cursor.getString(cursor
						.getColumnIndex(MediaStore.Audio.Media.ALBUM));
				int album_id = cursor.getInt(cursor
						.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID));

				String artist_name = cursor.getString(cursor
						.getColumnIndex(MediaStore.Audio.Media.ARTIST));
				int artist_id = cursor.getInt(cursor
						.getColumnIndex(MediaStore.Audio.Media.ARTIST_ID));
				System.out.println("sonng name"+fullpath);
			} while (cursor.moveToNext());

		}
		cursor.close();
	}
}


}

I have also added following line in the AndroidManifest.xml file as below:

<uses-sdk
    android:minSdkVersion="16"
    android:targetSdkVersion="17" />

<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Solution 9 - Java

In addition of all answers. You can also specify the minsdk to apply with this annotation

@TargetApi(_apiLevel_)

I used this in order to accept this request even my minsdk is 18. What it does is that the method only runs when device targets "_apilevel_" and upper. Here's my method:

    @TargetApi(23)
void solicitarPermisos(){

    if (ContextCompat.checkSelfPermission(this,permiso)
            != PackageManager.PERMISSION_GRANTED) {

        // Should we show an explanation?
        if (shouldShowRequestPermissionRationale(
                Manifest.permission.READ_EXTERNAL_STORAGE)) {
            // Explain to the user why we need to read the contacts
        }

        requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
                1);

        // MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE is an
        // app-defined int constant that should be quite unique

        return;
    }

}
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