+
+ @Override
+ public void onRequestPermissionsResult(int requestCode, String permissions[],
+ int[] grantResults) {
+ switch (requestCode) {
+ case PERMISSION_REQUEST_STORAGE: {
+ if (checkPermissionGrantResults(grantResults)) {
+ init();
+ } else {
+ finish();
+ }
+ }
+ }
+ }
+
+ private boolean needRequestStoragePermission() {
+ if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return false;
+
+ boolean needRequest = false;
+ String[] permissions = {
+ Manifest.permission.WRITE_EXTERNAL_STORAGE,
+ Manifest.permission.READ_EXTERNAL_STORAGE
+ };
+ ArrayList<String> permissionList = new ArrayList<String>();
+ for (String permission : permissions) {
+ if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
+ permissionList.add(permission);
+ needRequest = true;
+ }
+ }
+
+ if (needRequest) {
+ int count = permissionList.size();
+ if (count > 0) {
+ String[] permissionArray = new String[count];
+ for (int i = 0; i < count; i++) {
+ permissionArray[i] = permissionList.get(i);
+ }
+
+ requestPermissions(permissionArray, PERMISSION_REQUEST_STORAGE);
+ }
+ }
+
+ return needRequest;
+ }
+
+ private boolean checkPermissionGrantResults(int[] grantResults) {
+ for (int result : grantResults) {
+ if (result != PackageManager.PERMISSION_GRANTED) {
+ return false;
+ }
+ }
+ return true;
+ }
+