Android 6.0 Permission Error

Android 6.0 open failed: EACCES (Permission denied)

Android added new permission model for Android 6.0 (Marshmallow).

http://www.captechconsulting.com/blogs/runtime-permissions-best-practices-and-how-to-gracefully-handle-permission-removal

So you have to check Runtime Permission :

What Are Runtime Permissions?

With Android 6.0 Marshmallow, Google introduced a new permission model that allows users to better understand why an application may be requesting specific permissions. Rather than the user blindly accepting all permissions at install time, the user is now prompted to accept permissions as they become necessary during application use.

When to Implement the New Model?

it doesn’t require full support until you choose to target version 23 in your application. If you are targeting version 22 or below, your application will request all permissions at install time just as it would on any device running an OS below Marshmallow.

This information is taken from here :

Please check How to implement from this link :

http://www.captechconsulting.com/blogs/runtime-permissions-best-practices-and-how-to-gracefully-handle-permission-removal

Android 6.0 Permission Error

Yes permissions have changed on Android M. Permissions are now requested at runtime as opposed to install time previous to Android M.

You can check out the docs here

This release introduces a new permissions model, where users can now directly manage app permissions at runtime. This model gives users improved visibility and control over permissions, while streamlining the installation and auto-update processes for app developers. Users can grant or revoke permissions individually for installed apps.

On your apps that target Android 6.0 (API level 23) or higher, make sure to check for and request permissions at runtime. To determine if your app has been granted a permission, call the new checkSelfPermission() method. To request a permission, call the new requestPermissions() method. Even if your app is not targeting Android 6.0 (API level 23), you should test your app under the new permissions model.

For details on supporting the new permissions model in your app, see Working with System Permissionss. For tips on how to assess the impact on your app, see Permissions Best Practices.

To check for permissions you have to check like this, taken from github

public class MainActivity extends SampleActivityBase
        implements ActivityCompat.OnRequestPermissionsResultCallback {

    public static final String TAG = "MainActivity";

    /**
     * Id to identify a camera permission request.
     */
    private static final int REQUEST_CAMERA = 0;

    // Whether the Log Fragment is currently shown.
    private boolean mLogShown;

    private View mLayout;

    /**
     * Called when the 'show camera' button is clicked.
     * Callback is defined in resource layout definition.
     */
    public void showCamera(View view) {
        // Check if the Camera permission is already available.
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED) {
            // Camera permission has not been granted.

            requestCameraPermission();

        } else {

            // Camera permissions is already available, show the camera preview.
            showCameraPreview();
        }
    }

    /**
     * Requests the Camera permission.
     * If the permission has been denied previously, a SnackBar will prompt the user to grant the
     * permission, otherwise it is requested directly.
     */
    private void requestCameraPermission() {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.CAMERA)) {
            // Provide an additional rationale to the user if the permission was not granted
            // and the user would benefit from additional context for the use of the permission.
            // For example if the user has previously denied the permission.
            Snackbar.make(mLayout, R.string.permission_camera_rationale,
                    Snackbar.LENGTH_INDEFINITE)
                    .setAction(R.string.ok, new View.OnClickListener() {
                        @Override
                        public void onClick(View view) {
                            ActivityCompat.requestPermissions(MainActivity.this,
                                    new String[]{Manifest.permission.CAMERA},
                                    REQUEST_CAMERA);
                        }
                    })
                    .show();
        } else {

            // Camera permission has not been granted yet. Request it directly.
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA},
                    REQUEST_CAMERA);
        }
    }

    /**
     * Display the {@link CameraPreviewFragment} in the content area if the required Camera
     * permission has been granted.
     */
    private void showCameraPreview() {
        getSupportFragmentManager().beginTransaction()
                .replace(R.id.sample_content_fragment, CameraPreviewFragment.newInstance())
                .addToBackStack("contacts")
                .commit();
    }

    /**
     * Callback received when a permissions request has been completed.
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
            @NonNull int[] grantResults) {

        if (requestCode == REQUEST_CAMERA) {

            // Received permission result for camera permission.est.");
            // Check if the only required permission has been granted
            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Camera permission has been granted, preview can be displayed
                Snackbar.make(mLayout, R.string.permision_available_camera,
                        Snackbar.LENGTH_SHORT).show();
            } else {
                Snackbar.make(mLayout, R.string.permissions_not_granted,
                        Snackbar.LENGTH_SHORT).show();

            }
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mLayout = findViewById(R.id.sample_main_layout);

        if (savedInstanceState == null) {
            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
            RuntimePermissionsFragment fragment = new RuntimePermissionsFragment();
            transaction.replace(R.id.sample_content_fragment, fragment);
            transaction.commit();
        }
    }
}

open failed: EACCES (Permission denied) on first run

There is a bug on Android 6.0, the permissions are not being applied until all the application processes are killed. In other versions of the operating system when there is a change in the permissions settings, the App is Killed automatically and restarted from last Activity.

I avoid the bug using this on onRequestPermissionsResult and Restart the App.

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (grantResults.length == permissions.length){
        if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.M) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage(R.string.restart_message)
                    .setPositiveButton(R.string.restart_button, (dialog, id) -> {
                        restartApp();
                    });
            builder.create().show();
        }
    }
}

Android 6.0 File write permission denied

You should start the thread in onRequestPermissionsResult() after user granting the storage permission.

For more info check http://developer.android.com/training/permissions/requesting.html

Android android.permission.BLUETOOTH_CONNECT error

You have to request Manifest.permission.BLUETOOTH_CONNECT and Manifest.permission.BLUETOOTH_SCAN permissions at runtime as well. Just declaring in manifest is not sufficient because they are under dangerous permissions category.

docs for requesting permission

Refer the following link of answer for a direct code sample

requesting multiple permissions at runtime

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