Android Kotlin Java.Io.Filenotfoundexception: /Storage/Emulated/0/Number.Txt: Open Failed: Eacces (Permission Denied)

java.io.FileNotFoundException: /storage/emulated/0/New file.txt: open failed: EACCES (Permission denied)

I suspect you are running Android 6.0 Marshmallow (API 23) or later. If this is the case, you must implement runtime permissions before you try to read/write external storage.

android kotlin java.io.FileNotFoundException: /storage/emulated/0/number.txt: open failed: EACCES (Permission denied)

For Android 10, you can add android:requestLegacyExternalStorage="true" to your <application> element in the manifest. This opts you into the legacy storage model, and your external storage code should work.

And for read operations, you should be able to still do what you are doing on Android 11+, courtesy of the "raw paths" change, even after you raise your targetSdkVersion to 30 or higher.

However, for write operations, you have until the second half of 2021 to switch to something else:

• Use methods on Context, such as getExternalFilesDir(), to get at directories on external storage into which your app can write. You do not need any permissions to use those directories on Android 4.4+. However, the data that you store there gets removed when your app is uninstalled.

• Use the Storage Access Framework, such as ACTION_OPEN_DOCUMENT and ACTION_CREATE_DOCUMENT.

• If your content is media, you can use MediaStore to place the media in standard media locations.

Unable to decode stream: java.io.FileNotFoundException: /storage/emulated/0/Snapchat/Snapchat-441126967.jpg: open failed: EACCES (Permission denied)

So eventually I found out that the problem was peculiar to only android 10 devices. The way forward was to update my image_picker package to the latest version which is at this moment 0.8.1+3.

And everything worked very well.

Exception 'open failed: EACCES (Permission denied)' on Android

I had the same problem... The <uses-permission was in the wrong place. This is right:

 <manifest>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        ...
        <application>
            ...
            <activity> 
                ...
            </activity>
        </application>
    </manifest> 

The uses-permission tag needs to be outside the application tag.

Android APIv29 FileNotFoundException EACCES (Permission denied)

Starting with Android 11 the storage permission is getting revoked and developers would need to consider alternative ways of accessing the storage they need either through SAF or Media Store. For the time being, you can carry on using what you’re using by adding the following in your manifest within the application tags:

android:requestLegacyExternalStorage="true"

You might want to consider changing your minSDK to 19 and use getExternalFilesDir() to get a path that doesn’t require any permissions.

How to fix 'Permission denied'?

You need to first add android.permission.WRITE_EXTERNAL_STORAGE and android.permission.READ_EXTERNAL_STORAGE permission to your AndroidManifest.xml. Then programmaticaly you need to check whether these permissions are enabled in your activity's onCreate() method. You can do it as follows.

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

        List<Integer> lPermission = new ArrayList<>();
        List<String> stringPermissionList1 = getPermissionList();
        for (int i = 0; i < stringPermissionList1.size(); i++) {
            lPermission.add(ContextCompat.checkSelfPermission(activity, stringPermissionList1.get(i)));
        }
        boolean bPermissionDenied = false;
        for (int i = 0; i < lPermission.size(); i++) {
            int a = lPermission.get(i);
            if (PackageManager.PERMISSION_DENIED == a) {
                bPermissionDenied = true;
                break;
            }
        }

        if (bPermissionDenied) {

            String sMessage = "Please allow all permissions shown in upcoming dialog boxes, so that app functions properly";
   //make request to the user         
List<String> stringPermissionList = getPermissionList();
            String[] sPermissions = stringPermissionList.toArray(new String[stringPermissionList.size()]);

            //request the permissions
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                requestPermissions(sPermissions, PERMISSION_REQUEST_CODE);
            }
        } else {
           doFurtherProcessing();
        }

    } else {
      doFurtherProcessing();

    }
}

private List<String> getPermissionList(){
    List<String> stringPermissionList=new ArrayList<>();

 stringPermissionList.add(Manifest.permission.READ_EXTERNAL_STORAGE);
    stringPermissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
    return  stringPermissionList;
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        boolean isAllPermissionGranted = true;

        for (int i = 0; i < grantResults.length; i++) {
            int iPermission = grantResults[i];
            if (iPermission == PackageManager.PERMISSION_DENIED) {
                isAllPermissionGranted = false;
                break;
            }
        }
        if (isAllPermissionGranted) {
            doFurtherProcessing();
        } else {
            // Prompt the user to grant all permissions
        }

}

Hope this helps

FileNotFoundException: /storage/emulated/0/Android

You are creating the file in one directory and trying to open it for input in another.

Environment.getExternalStorageDirectory() is /storage/emulated/0

getExternalFilesDir(null) is /storage/emulated/0/Android/data/hu.abisoft.lm/files

Use the same directory for file creation and input.

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