Moved permission check and request to PermissionUtils

Author: maxme

WordPressUtils/src/main/java/org/wordpress/android/util/PermissionUtils.java

@@ -0,0 +1,52 @@
+package org.wordpress.android.util;
+
+import android.Manifest.permission;
+import android.app.Activity;
+import android.content.pm.PackageManager;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PermissionUtils {
+    /**
+     * Check for permissions, request them if they're not granted.
+     *
+     * @return true if permissions are already granted, else request them and return false.
+     */
+    private static boolean checkAndRequestPermissions(Activity activity, int requestCode, String[] permissionList) {
+        List<String> toRequest = new ArrayList<>();
+        for (String permission : permissionList) {
+            if (ContextCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED) {
+                toRequest.add(permission);
+            }
+        }
+        if (toRequest.size() > 0) {
+            String[] requestedPermissions = toRequest.toArray(new String[toRequest.size()]);
+            ActivityCompat.requestPermissions(activity, requestedPermissions, requestCode);
+            return false;
+        }
+        return true;
+    }
+
+    public static boolean checkAndRequestCameraAndStoragePermissions(Activity activity, int requestCode) {
+        return checkAndRequestPermissions(activity, requestCode, new String[]{
+                permission.WRITE_EXTERNAL_STORAGE,
+                permission.CAMERA
+        });
+    }
+
+    public static boolean checkAndRequestStoragePermission(Activity activity, int requestCode) {
+        return checkAndRequestPermissions(activity, requestCode, new String[]{
+                permission.WRITE_EXTERNAL_STORAGE
+        });
+    }
+
+    public static boolean checkLocationPermissions(Activity activity, int requestCode) {
+        return checkAndRequestPermissions(activity, requestCode, new String[]{
+                permission.ACCESS_FINE_LOCATION,
+                permission.ACCESS_COARSE_LOCATION
+        });
+    }
+}