Develop Reference

How to upload Image in Android Studio

this is my .java class
package com.example.gas4u;
private void showImagePickDialog() {
//options to display in dialog
String[] options = {"Camera","Gallery"};
//dialog
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick Image")
.setItems(options, new DialogInterface.OnClickListener(){
#Override
public void onClick(DialogInterface dialog, int which){
//handle items clicks
if (which == 0){
//camera clicked
if (checkCameraPermission()){
//permission granted
pickFromCamera();
}
else{
//permission not granted, request
requestCameraPermission();
}
}
else{
//gallery clicked
if (checkStoragePermission()){
//permission granted
pickFromGallery();
}
else{
//permission not granted
requestStoragePermission();
}
}
}
}).show();
}
// You can do the assignment inside onAttach or onCreate, i.e, before the activity is displayed
ActivityResultLauncher<Intent> someActivityResultLauncher = registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
new ActivityResultCallback<ActivityResult>() {
#Override
public void onActivityResult(ActivityResult result ) {
if (result.getResultCode() == Activity.RESULT_OK) {
// There are no request codes
Intent data = result.getData();
if (result.getResultCode() == IMAGE_PICK_GALLERY_CODE){
//image picked from gallery
//save picked image uri
image_uri = data.getData();
//set image
productIconIv.setImageURI(image_uri);
}
else if (result.getResultCode() == IMAGE_PICK_CAMERA_CODE){
//image picked from camera
productIconIv.setImageURI(image_uri);
}
}
}
});
private void pickFromGallery(){
//intent to pick image from gallery
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
someActivityResultLauncher.launch(intent);
//(intent, IMAGE_PICK_GALLERY_CODE);
}
private void pickFromCamera(){
//intent to pick image from camera
//using media store to pick high/original quality image
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.Images.Media.TITLE, "Temp_Image_Title");
contentValues.put(MediaStore.Images.Media.DESCRIPTION, "Temp_Image_Description");
image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
someActivityResultLauncher.launch(intent);
//startActivityForResult(intent, IMAGE_PICK_CAMERA_CODE);
}
private boolean checkStoragePermission(){
boolean result = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
(PackageManager.PERMISSION_GRANTED);
return result; //returns true or false
}
private void requestStoragePermission(){
ActivityCompat.requestPermissions(this, storagePermission, STORAGE_REQUEST_CODE);
}
private boolean checkCameraPermission(){
boolean result = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) ==
(PackageManager.PERMISSION_GRANTED);
boolean result1 = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
(PackageManager.PERMISSION_GRANTED);
return result && result1;
}
private void requestCameraPermission(){
ActivityCompat.requestPermissions(this, cameraPermissions, CAMERA_REQUEST_CODE);
}
//handle permission results
public void onRequestPermissionResult(int requestCode, #NonNull String[] permission, #NonNull int[] grantResults){
switch (requestCode){
case CAMERA_REQUEST_CODE:{
if (grantResults.length>0){
boolean cameraAccepted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
boolean storageAccepted = grantResults[1] == PackageManager.PERMISSION_GRANTED;
if (cameraAccepted && storageAccepted){
//both permission granted
pickFromCamera();
}
else{
//both or one permissions denied
Toast.makeText(this, "Camera & Storage permissions are required...", Toast.LENGTH_SHORT).show();
}
}
}
case STORAGE_REQUEST_CODE:{
if (grantResults.length>0){
boolean storageAccepted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
if (storageAccepted){
//permission granted
pickFromGallery();
}else{
//permission denied
Toast.makeText(this, "Storage permissions is required...", Toast.LENGTH_SHORT).show();
}
}
}
}
super.onRequestPermissionsResult(requestCode, permission, grantResults);
I do not know how to upload an image into Android Studio, I have looked into many videos in Youtube but I am not sure if I implement it correctly, since StartActivityForResult has been fabricated I try to follow the video in the Youtube how to implement it the new way, however it is not working. Can anyone help me with this?

Android: "Permission Error" on Capture using Camera

In Android the Camera action show a error:
java.lang.SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE cmp=android/com.android.internal.app.ResolverActivity } from ProcessRecord{beb99ec 32121:com.android.hawee/u0a369} (pid=32121, uid=10369) with revoked permission android.permission.CAMERA
at android.os.Parcel.readException(Parcel.java:1620)
I request permission on manifest as follows
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
And on chooserDialog on click of camera
if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, Constants.CAMERA_CAPTURE_PERMISSIONS_REQUEST_CODE);
} else {
Intent camera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
activity.startActivityForResult(camera, Constants.IMAGE_CAPTURE_CAMERA);
}
On activity
#SuppressLint("NewApi")
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.frameContainer);
fragment.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
And on Fragment
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
if (requestCode == Constants.CAMERA_CAPTURE_PERMISSIONS_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
Intent camera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(camera, Constants.IMAGE_CAPTURE_CAMERA);
} else {
new CommonDialogOK(getActivity(), getString(R.string.Sorry), getString(R.string.Permissions_Not_Granted));
}
} else if (requestCode == Constants.PICK_IMAGE_PERMISSIONS_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Intent gallery = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(gallery, Constants.IMAGE_CAPTURE_GALLERY);
} else {
new CommonDialogOK(getActivity(), getString(R.string.Sorry), getString(R.string.Permissions_Not_Granted));
}
}
}
But on click from ChooserDialog always get above error.
How can i ask permission for write to external and Image capture at same time.

If camera n external storage both are required for your app you should || them in if condition.
if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, Constants.CAMERA_CAPTURE_PERMISSIONS_REQUEST_CODE);
} else {
Intent camera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
activity.startActivityForResult(camera, Constants.IMAGE_CAPTURE_CAMERA);
}

Try this :-
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;
in onCreate()
private void checkAndroidVersion() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkAndRequestPermissions();
}
}
This method
private boolean checkAndRequestPermissions() {
int camera = ContextCompat.checkSelfPermission(getActivity(),
Manifest.permission.CAMERA);
int wtite = ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE);
int read = ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE);
List<String> listPermissionsNeeded = new ArrayList<>();
if (wtite != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
if (camera != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.CAMERA);
}
if (read != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(Manifest.permission.READ_EXTERNAL_STORAGE);
}
if (!listPermissionsNeeded.isEmpty()) {
ActivityCompat.requestPermissions(getActivity(), listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
}
return true;
}
then use this
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
Log.d("in fragment on request", "Permission callback called-------");
switch (requestCode) {
case REQUEST_ID_MULTIPLE_PERMISSIONS: {
Map<String, Integer> perms = new HashMap<>();
// Initialize the map with both permissions
perms.put(Manifest.permission.CAMERA, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.READ_EXTERNAL_STORAGE, PackageManager.PERMISSION_GRANTED);
// Fill with actual results from user
if (grantResults.length > 0) {
for (int i = 0; i < permissions.length; i++)
perms.put(permissions[i], grantResults[i]);
// Check for both permissions
if (perms.get(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED && perms.get(Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
Log.d("in fragment on request", "CAMERA & WRITE_EXTERNAL_STORAGE READ_EXTERNAL_STORAGE permission granted");
// process the normal flow
//else any one or both the permissions are not granted
} else {
Log.d("in fragment on request", "Some permissions are not granted ask again ");
//permission is denied (this is the first time, when "never ask again" is not checked) so ask again explaining the usage of permission
// // shouldShowRequestPermissionRationale will return true
//show the dialog or snackbar saying its necessary and try again otherwise proceed with setup.
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.CAMERA) || ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE) || ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE)) {
showDialogOK("Camera and Storage Permission required for this app",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
checkAndRequestPermissions();
break;
case DialogInterface.BUTTON_NEGATIVE:
// proceed with logic by disabling the related features or quit the app.
break;
}
}
});
}
//permission is denied (and never ask again is checked)
//shouldShowRequestPermissionRationale will return false
else {
Toast.makeText(getActivity(), "Go to settings and enable permissions", Toast.LENGTH_LONG)
.show();
// //proceed with logic by disabling the related features or quit the app.
}
}
}
}
}
}
private void showDialogOK(String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(getActivity())
.setMessage(message)
.setPositiveButton("OK", okListener)
.setNegativeButton("Cancel", okListener)
.create()
.show();
}
And Finally on button click when u save profile or so
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!checkAndRequestPermissions()) {
}
else {
// do your stuff here
}
} else {
// do your stuff here
}

Try this code:
For Checking permission I created a separate class as below:
public class MarshMallowPermission {
public static final int RECORD_PERMISSION_REQUEST_CODE = 1;
public static final int EXTERNAL_STORAGE_PERMISSION_REQUEST_CODE = 2;
public static final int CAMERA_PERMISSION_REQUEST_CODE = 3;
Activity activity;
public MarshMallowPermission(Activity activity) {
this.activity = activity;
}
public boolean checkPermissionForRecord(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.RECORD_AUDIO);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public boolean checkPermissionForExternalStorage(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public boolean checkPermissionForCamera(){
int result = ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}
public void requestPermissionForRecord(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.RECORD_AUDIO)){
Toast.makeText(activity, "Microphone permission needed for recording. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.RECORD_AUDIO},RECORD_PERMISSION_REQUEST_CODE);
}
}
public void requestPermissionForExternalStorage(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)){
Toast.makeText(activity, "External Storage permission needed. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},EXTERNAL_STORAGE_PERMISSION_REQUEST_CODE);
}
}
public void requestPermissionForCamera(){
if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.CAMERA)){
Toast.makeText(activity, "Camera permission needed. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.CAMERA},CAMERA_PERMISSION_REQUEST_CODE);
}
}
}
Then
MarshMallowPermission marshMallowPermission = new
MarshMallowPermission(this);
public void getPhotoFromCamera() {
if (!marshMallowPermission.checkPermissionForCamera()) {
marshMallowPermission.requestPermissionForCamera();
} else {
if (!marshMallowPermission.checkPermissionForExternalStorage()) {
marshMallowPermission.requestPermissionForExternalStorage();
} else {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File mediaStorageDir = new File(
Environment.getExternalStorageDirectory()
+ File.separator
+ getString(R.string.directory_name_corp_chat)
+ File.separator
+ getString(R.string.directory_name_images)
);
if (!mediaStorageDir.exists()) {
mediaStorageDir.mkdirs();
}
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
try {
mediaFile = File.createTempFile(
"IMG_" + timeStamp, /* prefix */
".jpg", /* suffix */
mediaStorageDir /* directory */
);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mediaFile));
startActivityForResult(takePictureIntent, PICK_FROM_CAMERA);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

The answer needs more upvotes and should be the official answer about permissions with camera, the other answers don't solved the problem on Android 10.
And how we know, the answers/codes that work on new versions works on olders.
Help us to index this answer:
if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, Constants.CAMERA_CAPTURE_PERMISSIONS_REQUEST_CODE);
} else {
Intent camera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
activity.startActivityForResult(camera, Constants.IMAGE_CAPTURE_CAMERA);
}

[Unity 3D]I want access Android Camera and pick up path

I make an AARplugins for android which accesses Camera.
But it does not activate onActivityResult.
public static void showCamera ( ) // Connect Camera
{
String Uri;
Activity CameraActivity = UnityPlayer.currentActivity;
Toast.makeText(CameraActivity , "first" ,Toast.LENGTH_LONG).show();
Log.d(" before ImageUrl###### ", "first");
CameraActivity.runOnUiThread(new Runnable()
{
public void run() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
CameraActivity.startActivityForResult(intent,1);
}
});
}
///////////////Don't activate↓//////////////////////////////////
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
Log.d(" before ImageUrl###### ", "twotwotwotwotwotwotwo"); //Don't activate
}
////////////////////////////////////////////////////////////////////////////
why don't activate this?

Try This,
Camera permission
private static final int REQUEST_CAMERA = 112;
btn_cam.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (Build.VERSION.SDK_INT >= 23) {
String[] PERMISSIONS = {android.Manifest.permission.CAMERA};
if (!hasPermissions(mContext, PERMISSIONS)) {
ActivityCompat.requestPermissions((Activity) mContext, PERMISSIONS, REQUEST_CAMERAE );
} else {
//open camera
}
} else {
//open camera
}
}
});
}
get Permissions Result
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_CAMERA: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//open camera
}
}
}
}
check permissions for marshmallow
private static boolean hasPermissions(Context context, String... permissions) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
}
AndroidManifest.xml
<uses-permission android:name="android.permission.CAMERA" />

Runtime Permission in Redmi Phone

I am trying to send sms targeted version 24 with runtime permission. It gives SecurityException in Redmi Mi 3s device but working fine on other device with Marshmallow OS.
final int REQ_CODE = 100;
void requestPermission(){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
CTLogs.printLogs( "Permission is not granted, requesting");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.SEND_SMS,Manifest.permission.READ_SMS,Manifest.permission.RECEIVE_SMS}, REQ_CODE);
// button.setEnabled(false);
} else {
CTLogs.printLogs("Permission has been granted");
sendSMS();
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == REQ_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
CTLogs.printLogs("Permission has been granted");
sendSMS();
} else {
CTLogs.printLogs("Permission denied !!!");
}
}
}

Try this:
// The permission required by the application to work properly
protected static final String[] requiredPermissions;
private static final int PERMISSION_REQUEST = 0;
static {
List<String> perms = new ArrayList<>(Arrays.asList(
Manifest.permission.RECEIVE_SMS,
Manifest.permission.READ_SMS,
Manifest.permission.SEND_SMS
));
requiredPermissions = perms.toArray(new String[perms.size()]);
}
Call verifyPermissions() method in onCreate():
private void verifyPermissions() {
if (!hasAllPermissions()) {
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(
this,
requiredPermissions,
PERMISSION_REQUEST
);
}
}
private boolean hasAllPermissions() {
// Check if we have all required permissions.
for (String perm : requiredPermissions) {
if (ActivityCompat.checkSelfPermission(this, perm) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
return true;
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case PERMISSION_REQUEST: {
// If request is cancelled, the result arrays are empty.
if (!hasAllPermissions()) {
finish();
}
return;
}
}
}

once a uninstall app then put this and then install it.
if (ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.SEND_SMS)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.SEND_SMS},
MY_PERMISSIONS_REQUEST_READ_CONTACTS);
}

Understanding the Android 6 permission method

I am trying to take an image from Gallery and set it to an imageview but in Android 6 there are some permission problems. Below is the method to ask for the permission. Should I ask for read external storage or write external storage?
Here is what I have done so far:
private static final int READ_CONTACTS_PERMISSIONS_REQUEST = 1;
public void getPermissionToReadExternalStorage() {
if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
if (shouldShowRequestPermissionRationale(
Manifest.permission.READ_EXTERNAL_STORAGE)) {
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
READ_CONTACTS_PERMISSIONS_REQUEST);
}}}
#Override
public void onRequestPermissionsResult(int requestCode,
#NonNull String permissions[],
#NonNull int[] grantResults){
// Make sure it's our original READ_CONTACTS request
if (requestCode == READ_CONTACTS_PERMISSIONS_REQUEST) {
if (grantResults.length == 1 &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getActivity(), "Read Contacts permission granted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getActivity(), "Read Contacts permission denied", Toast.LENGTH_SHORT).show();
}
} else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
Now my on click listener to pick data from the Gallery:
pro.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
if (android.os.Build.VERSION.SDK_INT >= 23) {
getPermissionToReadExternalStorage();
if (getPermissionToReadExternalStorage () this???? <==)
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 0);
} else {
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 0);
}}
});
return v;
}
Now I want to get result of the method getPermissionToReadExternalStorage() so I can start the Activity for picking gallery for Android 6. How can I get the result of the void class?
And another thing is do I have to write method for every permission my app asks for?

So I have completely rewritten the code to request permissions.
Now it supports requesting for multiple permissions and running code with proper result.
Also it works with preMarshmallow devices, so you don't have to check and copy the code in that case.
First, create an Activity class with this code (You can extend any king of activity you need, e.g. AppCompatActivity):
public abstract class PermissionActivity extends AppCompatActivity {
private final ArrayList<PermissionListener> permissionListeners = new ArrayList<>();
#SuppressWarnings("unused")
public void requestPermissions(int requestCode, String[] requestPermissions, PermissionListener permissionListener) {
requestPermissions(requestCode, requestPermissions, null, permissionListener);
}
#SuppressWarnings("unused")
public void requestPermissions(final int requestCode, String[] requestPermissions, String message, final PermissionListener permissionListener) {
final int[] grantResults = new int[requestPermissions.length];
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
ArrayList<String> list_notGranted = new ArrayList<>();
for (String requestPermission : requestPermissions)
if (ContextCompat.checkSelfPermission(this, requestPermission) != PackageManager.PERMISSION_GRANTED)
list_notGranted.add(requestPermission);
if (list_notGranted.size() > 0) {
permissionListeners.add(permissionListener);
requestPermissions = list_notGranted.toArray(new String[list_notGranted.size()]);
if (message != null) {
boolean shouldShowRequestPermissionRationale = false;
for (String permission : requestPermissions)
if (ActivityCompat.shouldShowRequestPermissionRationale(this, permission)) {
shouldShowRequestPermissionRationale = true;
break;
}
if (shouldShowRequestPermissionRationale) {
final String[] f_requestPermissions = requestPermissions;
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message);
DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() {
#TargetApi(Build.VERSION_CODES.M)
#Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
PermissionActivity.super.requestPermissions(f_requestPermissions, requestCode);
break;
default:
for (int i = 0; i < grantResults.length; i++)
grantResults[i] = PackageManager.PERMISSION_DENIED;
if (permissionListener != null)
permissionListener.onResult(requestCode, f_requestPermissions, grantResults);
break;
}
}
};
builder.setPositiveButton("OK", onClickListener);
builder.setNegativeButton("Cancel", onClickListener);
builder.show();
} else {
super.requestPermissions(requestPermissions, requestCode);
}
} else {
super.requestPermissions(requestPermissions, requestCode);
}
} else {
for (int i = 0; i < grantResults.length; i++)
grantResults[i] = PackageManager.PERMISSION_GRANTED;
if (permissionListener != null)
permissionListener.onResult(requestCode, requestPermissions, grantResults);
}
} else {
if (permissionListener != null) {
for (int i = 0; i < grantResults.length; i++)
grantResults[i] = PackageManager.PERMISSION_GRANTED;
permissionListener.onResult(requestCode, requestPermissions, grantResults);
}
}
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String permissions[], #NonNull int[] grantResults) {
for (Iterator<PermissionListener> it = permissionListeners.iterator(); it.hasNext(); ) {
PermissionListener permissionListener = it.next();
if (permissionListener.onResult(requestCode, permissions, grantResults)) {
it.remove();
}
}
}
public interface PermissionListener {
boolean onResult(int requestCode, String[] requestPermissions, int[] grantResults);
}
}
If you want to request permissions from Fragments, add this class:
public class PermissionFragment extends Fragment {
#SuppressWarnings("unused")
public void requestPermissions(int requestCode, String[] requestPermissions, PermissionActivity.PermissionListener permissionListener) {
requestPermissions(requestCode, requestPermissions, null, permissionListener);
}
#SuppressWarnings("unused")
public void requestPermissions(final int requestCode, String[] requestPermissions, String message, PermissionActivity.PermissionListener permissionListener) {
((PermissionActivity) getActivity()).requestPermissions(requestCode, requestPermissions, message, permissionListener);
}
}
Your Activities and Fragments should extend these classes instead of the standart ones.
Now you are ready to request the permissions by calling a method:
requestPermissions(int requestCode, String[] requestPermissions, PermissionListener permissionListener)
If the permission is required for the app to work, you should call this method and specify the message saying why the permission is required.
requestPermissions(int requestCode, String[] requestPermissions, String message, PermissionListener permissionListener)
DONT MISSCALL THE DEFAULT METHOD, WHICH IS
// DON'T USE THIS ONE!
requestPermissions(String[] requestPermissions, int requestCode)
// DON'T USE THIS ONE!
Here is the example of requesting contacts:
private void requestAndLoadContacts() {
String[] permissions = new String[]{Manifest.permission.READ_CONTACTS};
requestPermissions(REQUEST_PERMISSIONS_CONTACTS, permissions, "Read contacts permission is required for the app to work!", new PermissionListener() {
#Override
public boolean onResult(int requestCode, String[] requestPermissions, int[] grantResults) {
// Check if the requestCode is ours
if (requestCode == REQUEST_PERMISSIONS_CONTACTS) {
// Check if the permission is correct and is granted
if (requestPermissions[0].equals(Manifest.permission.READ_CONTACTS) && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// Permission granted
// Calling a method to actually load the contacts
loadContacts();
} else {
// Permission not granted
Toast.makeText(MainActivity.this, "Access denied!", Toast.LENGTH_SHORT).show();
}
return true;
}
return false;
}
});
}
NOTE:
When you implement the PermissionListener, don't forget to return true when the requestCode is the correct one, otherwise the PermissionListener won't be removed from the ArrayList and you'll most likely get a small memory leak.

EDIT
I have rewritted the code and posted in another answer.
Old answer:
Yes, you have to check and ask for permission every time.
Usually I write the code like this:
private int requestPermissionCode;
private Runnable requestPermissionRunnable;
private void runPermissionCode(String requestPermission, int requestCode, Runnable codeToRun) {
if (android.os.Build.VERSION.SDK_INT >= 23) {
if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
requestPermissionCode = requestCode;
requestPermissionRunnable = codeToRun;
requestPermissions(new String[]{requestPermission},
requestCode);
}
} else {
codeToRun.run();
}
}
#Override
public void onRequestPermissionsResult(int requestCode,
#NonNull String permissions[],
#NonNull int[] grantResults) {
if (requestCode == requestPermissionCode) {
if (grantResults.length == 1 &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
if (requestPermissionRunnable != null)
requestPermissionRunnable.run();
} else {
Toast.makeText(getActivity(), "Permission denied", Toast.LENGTH_SHORT).show();
}
} else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
and run it like this:
runPermissionCode(Manifest.permission.READ_EXTERNAL_STORAGE, READ_CONTACTS_PERMISSIONS_REQUEST, new Runnable() {
#Override
public void run() {
// your code here
}
});
I am sure it is not a best way, but at least it gives a possibility to request permission and make actions easier.

Initialize Your Permission
private static final int INITIAL_REQUEST = 1337;
private static final int GET_ACCOUNTS = INITIAL_REQUEST+2;
private static final int LOCATION_REQUEST =INITIAL_REQUEST+3;
private static final String[] INITIAL_PERMS = {
Manifest.permission.GET_ACCOUNTS,
Manifest.permission.INTERNET,
Manifest.permission.ACCESS_FINE_LOCATION
};
Check for device and Request for permissions
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!canAccessAccounts()|| !canAccessLocation() ||!canAccessInternet()) {
requestPermissions(INITIAL_PERMS, INITIAL_REQUEST);
}
}
Check Permission is granted Or not
private boolean canAccessAccounts() {
return (hasPermission(Manifest.permission.GET_ACCOUNTS));
}
private boolean canAccessLocation() {
return (hasPermission(Manifest.permission.ACCESS_FINE_LOCATION));
}
private boolean canAccessInternet() {
return (hasPermission(Manifest.permission.INTERNET));
}
private boolean hasPermission(String perm) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return (PackageManager.PERMISSION_GRANTED == checkSelfPermission(perm));
}
return (true);
}
Update Permissions and Check method for permissions onRequestPermissionsResult
void UpdatePermissions(){
canAccessInternet();
canAccessLocation();
canAccessInternet();
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
UpdatePermissions();
switch(requestCode) {
case GET_ACCOUNTS:
if (canAccessAccounts()) {
}
else {
}
break;
case LOCATION_REQUEST:
if (canAccessLocation()) {
}
else {
}
break;
case INITIAL_REQUEST:
if(canAccessInternet()){
}else {
}
break;
}
}