Android runtime permission request

[mirulumam]

tested on Android 7.1

[nanmu42]

Hey, buddy, you should really consider accepting this. It works like charm.

[NivaLevy]

Thank you for this.
I think it would be better not to add another class and just take care of it all in the ImagePicker.java file like so:

/**

• An Image Picker Plugin for Cordova/PhoneGap.
  */
  package com.synconset;

import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.apache.cordova.PermissionHelper;

import java.util.ArrayList;
import android.Manifest;

import android.content.pm.PackageManager;
import android.os.Build;
import android.app.Activity;
import android.content.Intent;
import android.content.Context;
import android.util.Log;

public class ImagePicker extends CordovaPlugin {
public static String TAG = "ImagePicker";

private CallbackContext callbackContext;
private JSONObject params;
public static final int SAVE_TO_ALBUM_SEC = 1;


public boolean execute(String action, final JSONArray args, final CallbackContext callbackContext) throws JSONException {
	 this.callbackContext = callbackContext;
	 this.params = args.getJSONObject(0);

	 Context context = this.cordova.getActivity().getApplicationContext();

	 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if(!PermissionHelper.hasPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
			PermissionHelper.requestPermission(this, SAVE_TO_ALBUM_SEC, Manifest.permission.READ_EXTERNAL_STORAGE);
        } else {
			startGettingPics(action) ;
		}
    } else {
		startGettingPics(action) ;
	}
	return true;
}


public void startGettingPics(String action) throws JSONException{
	if (action.equals("getPictures")) {
		Intent intent = new Intent(cordova.getActivity(), MultiImageChooserActivity.class);
		int max = 20;
		int desiredWidth = 0;
		int desiredHeight = 0;
		int quality = 100;
		if (this.params.has("maximumImagesCount")) {
			max = this.params.getInt("maximumImagesCount");
		}
		if (this.params.has("width")) {
			desiredWidth = this.params.getInt("width");
		}
		if (this.params.has("height")) {
			desiredHeight = this.params.getInt("height");
		}
		if (this.params.has("quality")) {
			quality = this.params.getInt("quality");
		}
		intent.putExtra("MAX_IMAGES", max);
		intent.putExtra("WIDTH", desiredWidth);
		intent.putExtra("HEIGHT", desiredHeight);
		intent.putExtra("QUALITY", quality);
		if (this.cordova != null) {
			this.cordova.startActivityForResult((CordovaPlugin) this, intent, 0);
		}
	}
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
	if (resultCode == Activity.RESULT_OK && data != null) {
		ArrayList<String> fileNames = data.getStringArrayListExtra("MULTIPLEFILENAMES");
		JSONArray res = new JSONArray(fileNames);
		this.callbackContext.success(res);
	} else if (resultCode == Activity.RESULT_CANCELED && data != null) {
		String error = data.getStringExtra("ERRORMESSAGE");
		this.callbackContext.error(error);
	} else if (resultCode == Activity.RESULT_CANCELED) {
		JSONArray res = new JSONArray();
		this.callbackContext.success(res);
	} else {
		this.callbackContext.error("No images selected");
	}
}

public void onRequestPermissionResult(int requestCode, String[] permissions,
                                      int[] grantResults) throws JSONException {
    for (int r : grantResults) {
        if (r == PackageManager.PERMISSION_DENIED) {
            return;
        }
    }
    switch (requestCode) {
     
        case SAVE_TO_ALBUM_SEC:
            this.startGettingPics("getPictures");
            break;
    }
}

}