Reputation: 813
Hey I am designing an app in android studio. In which i require permission of camera. I have included <uses-permission android:name="android.permission.CAMERA" />
in the the AndroidManifest.xml file. It is working properly in all versions of android except Marshmallow. How do I get camera permission by default? If not possible how do I ask it from user?
Upvotes: 71
Views: 222917
Reputation: 999
One of the easiest way to take permission is to used the deterex library. like below Implement the following library in your gradle.
implementation 'com.karumi:dexter:6.2.2'
after adding the library used this for permission like below
Dexter.withContext(this)
.withPermissions(
Manifest.permission.CAMERA
).withListener(new MultiplePermissionsListener() {
@Override public void onPermissionsChecked(MultiplePermissionsReport report) {/* ... */}
@Override public void onPermissionRationaleShouldBeShown(List<PermissionRequest> permissions, PermissionToken token) {/*
... */}
}).check();
Don't forget to add the user permission in your manifest
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
Upvotes: 3
Reputation: 404
private const val CAMERA_PERMISSION_REQUEST_CODE = 2323
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
{
if (checkSelfPermission(Manifest.permission.CAMERA) !=
PackageManager.PERMISSION_GRANTED)
{
requestPermissions(arrayOf(Manifest.permission.CAMERA),
CAMERA_PERMISSION_REQUEST_CODE)
}
}
Upvotes: 0
Reputation: 157
I try to add following code:
private static final int MY_CAMERA_REQUEST_CODE = 100;
@RequiresApi(api = Build.VERSION_CODES.M)
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.CAMERA}, MY_CAMERA_REQUEST_CODE);
}
On onCreate Function and this following code:
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == MY_CAMERA_REQUEST_CODE) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
}
}
}
And this worked for me :)
Upvotes: 2
Reputation: 464
click here for full source code and learn more.
Before get permission you can check api version,
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
{
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
}
else
{
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 401);
}
}
else
{
// if version is below m then write code here,
}
Get the Result of the permission dialog,
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 401) {
if (grantResults.length == 0 || grantResults == null) {
} else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
openGallery();
} else if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
}
} else if (requestCode == 402) {
if (grantResults.length == 0 || grantResults == null) {
} else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
}
}
}
Upvotes: 1
Reputation: 31
Requesting Permissions In the following code, we will ask for camera permission:
in java
EasyPermissions is a wrapper library to simplify basic system permissions logic when targeting Android M or higher.
Installation EasyPermissions is installed by adding the following dependency to your build.gradle file:
dependencies {
// For developers using AndroidX in their applications
implementation 'pub.devrel:easypermissions:3.0.0'
// For developers using the Android Support Library
implementation 'pub.devrel:easypermissions:2.0.1'
}
private void askAboutCamera(){
EasyPermissions.requestPermissions(
this,
"A partir deste ponto a permissão de câmera é necessária.",
CAMERA_REQUEST_CODE,
Manifest.permission.CAMERA );
}
Upvotes: 1
Reputation: 1334
This works for me, the source is here
int MY_PERMISSIONS_REQUEST_CAMERA=0;
// Here, this is the current activity
if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED)
{
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA))
{
}
else
{
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.CAMERA}, MY_PERMISSIONS_REQUEST_CAMERA );
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
Upvotes: 7
Reputation: 2172
You can try the following code to request camera permission in marshmallow. First check if the user grant the permission. If user has not granted the permission, then request the camera permission:
private static final int MY_CAMERA_REQUEST_CODE = 100;
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.CAMERA}, MY_CAMERA_REQUEST_CODE);
}
After requesting the permission, dialog will display to ask permission containing allow
and deny
options. After clicking action we can get result of the request with the following method:
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == MY_CAMERA_REQUEST_CODE) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
}
}
}
Upvotes: 65
Reputation: 1071
First check if the user has granted the permission:
if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA)
== PackageManager.PERMISSION_DENIED)
Then, you could use this to request to the user:
ActivityCompat.requestPermissions(activity, new String[] {Manifest.permission.CAMERA}, requestCode);
And in Marshmallow, it will appear in a dialog
Upvotes: 98
Reputation: 528
check using this
if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
== PackageManager.PERMISSION_DENIED)
and
Upvotes: 3