Permissionsdispatcher: can't find MainActivityPermissionsDispatcher

[Kevin-Leung]

Hi,I was wondering how can I find the class "MainActivityPermissionsDispatcher",thanks.

[hotchemi]

Have you tried rebuilding the project? The code is generated by annotation processor.

[mannodermaus]

If you want to look at the source code generated by PermissionsDispatcher, you can either Ctrl+Click (Windows) or Cmd+Click (Mac OS X) on MainActivityPermissionsDispatcher in your code to go to its source file, or look for it in your app module's build folder (build/generated/source/apt).

[Kevin-Leung]

it's my environment‘s problem,thanks again

[EnriqueRqox]

@Kevin-Leung can you explain how you solved the problem please. I am having troubles with that, it doesn't create the helper class and I don't know why.
My project uses Java 1.8 and sdk 24. Thanks in advance.

[hotchemi]

@EnriqueRqox Have you tried rebuild project with Android Studio. It will solve the problem.

[EnriqueRqox]

@hotchemi Yes, I have thied several times and always the output is:

Error:(59, 9) error: cannot find symbol variable ActivityRequestPermPermissionsDispatcher
Error:(146, 9) error: cannot find symbol variable ActivityRequestPermPermissionsDispatcher
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
Compilation failed; see the compiler error output for details.

I have look at path that @aurae said before and doesn't generate anything.
My code is the following:

package com.example.enriqueruiz.pruebawikitude;

import android.Manifest;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.StringRes;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.util.List;

import permissions.dispatcher.NeedsPermission;
import permissions.dispatcher.OnNeverAskAgain;
import permissions.dispatcher.OnPermissionDenied;
import permissions.dispatcher.OnShowRationale;
import permissions.dispatcher.PermissionRequest;
import permissions.dispatcher.RuntimePermissions;

@RuntimePermissions
public class ActivityRequestPerm extends AppCompatActivity {

    private static final String TAG = ActivityRequestPerm.class.getSimpleName();

    private View parentLayout;

    private String[] permissions = {
            "android.permission.CAMERA",
            "android.permission.ACCESS_FINE_LOCATION",
            "android.permission.WRITE_EXTERNAL_STORAGE"};
    private int[] hasPermissions = {-1, -1, -1}; // GRANTED=0 ; DENIED=-1
    //private String[] namePerm = {"camera", "location", "storage"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_request_perm);
        parentLayout = findViewById(R.id.activity_request_perm);

        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "onClick: before Intent");
                Intent i = new Intent(getApplicationContext(), ActivityMain.class);
                startActivity(i);
                Log.d(TAG, "onClick: after Intent");
            }
        });

        // NOTE: delegate the permission handling to generated method
        //ActivityRequestPermPermissionsDispatcher.showCameraWithCheck(this);
        ActivityRequestPermPermissionsDispatcher.checkPermissionsWithCheck(this);
    }

    @Override
    protected void onResume () {
        super.onResume();

        Log.d(TAG, "onResume");

        checkPermissions();
    }

    /**
     * Annotate a method which performs the action that requires one or more permissions
     */
    @NeedsPermission( {Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE} )
    void checkPermissions() {
        /*getSupportFragmentManager().beginTransaction()
                .replace(R.id.sample_content_fragment, CameraPreviewFragment.newInstance())
                .addToBackStack("camera")
                .commitAllowingStateLoss();*/
        hasPermissions[0] = ContextCompat.checkSelfPermission(this, permissions[0]);
        hasPermissions[1] = ContextCompat.checkSelfPermission(this, permissions[1]);
        hasPermissions[2] = ContextCompat.checkSelfPermission(this, permissions[2]);
        Log.d(TAG, "Camera permission: "+hasPermissions[0]);
        Log.d(TAG, "Location permission: "+hasPermissions[1]);
        Log.d(TAG, "Storage permission: "+hasPermissions[2]);
    }

    /**
     * Annotate a method which explains why the permission/s is/are needed. It passes in a
     * PermissionRequest object which can be used to continue or abort the current permission
     * request upon user input
     * @param request
     */
    @OnShowRationale( {Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE} )
    void showRationaleForCamera(PermissionRequest request) {
        // NOTE: Show a rationale to explain why the permission is needed, e.g. with a dialog.
        // Call proceed() or cancel() on the provided PermissionRequest to continue or abort
        showRationaleDialog(R.string.permission_rationale, request);
    }

    /**
     * Annotate a method which is invoked if the user doesn't grant the permissions
     */
    @OnPermissionDenied( {Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE} )
    void showDeniedForCamera() {
        Toast.makeText(this, R.string.permission_camera_denied, Toast.LENGTH_SHORT).show();
    }

    /**
     * Annotate a method which is invoked if the user chose to have the device "never ask again"
     * about a permission
     */
    @OnNeverAskAgain( {Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE} )
    void showNeverAskForCamera() {
        Toast.makeText(this, R.string.permission_camera_neverask, Toast.LENGTH_SHORT).show();
    }

    /**
     *
     * @param messageResId
     * @param request
     */
    private void showRationaleDialog(@StringRes int messageResId, final PermissionRequest request) {
        new AlertDialog.Builder(this)
                .setPositiveButton(R.string.button_allow, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(@NonNull DialogInterface dialog, int which) {
                        request.proceed();
                    }
                })
                .setNegativeButton(R.string.button_deny, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(@NonNull DialogInterface dialog, int which) {
                        request.cancel();
                    }
                })
                .setCancelable(false)
                .setMessage(messageResId)
                .show();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        // NOTE: delegate the permission handling to generated method
        ActivityRequestPermPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults);
    }
}

Thanks again.

[hotchemi]

@EnriqueRqox Did you add android-apt plugin to gradle? To get more info can you give us a sample prj which we can reproduce the problem?

[EnriqueRqox]

@hotchemi That was the key. I forgot to include the plugin and all works except the helper class. I would have spent the whole day trying to find the problem. Thanks very much!

[hotchemi]

My pleasure!