Develop Reference

Need example android Bluetooth permission code

I need an example java code of Bluetooth permissions. Android 12.
I know that I have to put this in the AndroidManifest.xml
<uses-permission android:name="android.permission.BLUETOOTH"/>
From my research I think I have to use these tools to get my phone to ask me for Bluetooth permissions:
ActivityCompat
ContextCompat
PackageManager
onRequestPermissionsResult
But no luck after many hours of tests.
I even tried using libraries from GitHub to ask for "easy" permissions for me but no luck:
https://github.com/googlesamples/easypermissions
https://github.com/guolindev/PermissionX
I tried lowering my target SDK version so I don't need to ask for the user entry but "AndroidX" gave me an error telling that its not compatible with lower SDK's.
It would help me a ton if you have a basic working Bluetooth app java code so I can figure out how to code my own app.

For the new Bluetooth permissions on Android 12, you need these permissions:
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
You can refer to this blog post for more details.

For bluetooth permission on Android 12, you need these permission, depend on your usage:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.NFC" />
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
<uses-feature android:name="android.hardware.nfc" android:required="true" />
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true" />
In your activity, you can add this to check the permission is allowed or not:
private static final int ACCESS_COARSE_LOCATION_RESULT_CODE = 4;
private static final int BLUETOOTH_RESULT_CODE = 5;
private static final int DANGEROUS_RESULT_CODE = 1;
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
ACCESS_COARSE_LOCATION_RESULT_CODE);
}
else if (ContextCompat.checkSelfPermission(this,
Manifest.permission.BLUETOOTH) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.BLUETOOTH},
BLUETOOTH_RESULT_CODE);
}
else if(ContextCompat.checkSelfPermission(this,
Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.BLUETOOTH_SCAN},
DANGEROUS_RESULT_CODE);
}
}
else if(ContextCompat.checkSelfPermission(this,
Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.BLUETOOTH_CONNECT},
DANGEROUS_RESULT_CODE);
}
}
To understand more, you can check the documentation.

"Required permission was denied!" when requesting WRITE_EXTERNAL_STORAGE

I am trying to request WRITE_EXTERNAL_STORAGE permission on Android 10. I do that using the following code:
ArrayList<String> permissions = new ArrayList<>();
if (this.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
permissions.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (this.checkSelfPermission(ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
permissions.add(Manifest.permission.ACCESS_COARSE_LOCATION);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q &&
this.checkSelfPermission(ACCESS_BACKGROUND_LOCATION) != PackageManager.PERMISSION_GRANTED) {
permissions.add(Manifest.permission.ACCESS_BACKGROUND_LOCATION);
}
if (this.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
permissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
if (permissions.size() > 0) requestPermissions(permissions.toArray(new String[0]), PERMISSION_REQUEST_FINE_LOCATION);
Here is the manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
All other permissions work except WRITE_EXTERNAL_STORAGE. When I try to request it, it does not display any dialog for confirming permission, but it simply denies it. Why and how can I fix it?

I have discovered the solution, however the cause of the problem is still a mystery to me. If anyone has an explination, it would be greatly appreciated. Basically my issue is a duplicate of this issue. All I had to do is to change the following line from
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
to
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" tools:node="replace"/>
What does tools:node="replace" do?

You can handle requested permission using this method (works with android 10), Here is the documentation.
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
switch (requestCode) {
case PERMISSION_REQUEST_ID_STORAGE:
// permisstion granted by user
break;
}
} else {
switch (requestCode) {
case PERMISSION_REQUEST_ID_STORAGE:
// permission denied by user
break;
}
}
}

You can use Android Runtime Permission Library by nabinbhandari
in you build.gradle app module file write this
//Android Runtime Permission Library
implementation 'com.nabinbhandari.android:permissions:3.8'
In your Manifest file write
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
and in Activity declare these variables
String[] permissions = new String[]{READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE};
String rationale = "Please provide storage permission to proceed ...";
And in your onCreate() Method write this
Permissions.Options options = new Permissions.Options()
.setRationaleDialogTitle("Info")
.setSettingsDialogTitle("Warning");
Permissions.check(MainActivity.this, permissions, rationale, options, new PermissionHandler() {
#Override
public void onGranted() {
// do your task.
Toast.makeText(MainActivity.this, "Permissions granted", Toast.LENGTH_SHORT).show();
}
#Override
public void onDenied(Context context, ArrayList<String> deniedPermissions) {
// permission denied
Toast.makeText(MainActivity.this, "Permissions denied", Toast.LENGTH_SHORT).show();
}
});

Unable to request RECORD_AUDIO permission in Android

I am developing an Android application that has its own video recorder feature. For that I need to request RECORD_AUDIO permission from the user. But when I request the permission, it is not showing the prompt to get the permission from the user.
This is my function that checks if the app needs to request permission and it does automatically if required.
private boolean isRecordAudioPermissionGranted()
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) ==
PackageManager.PERMISSION_GRANTED) {
// put your code for Version>=Marshmallow
return true;
} else {
if (shouldShowRequestPermissionRationale(Manifest.permission.RECORD_AUDIO)) {
Toast.makeText(this,
"App required access to audio", Toast.LENGTH_SHORT).show();
}
requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO
},AUDIO_RECORD_REQUEST_CODE);
return false;
}
} else {
// put your code for Version < Marshmallow
return true;
}
}
In the onCreate of the Activity, I call the function like this.
if(!isRecordAudioPermissionGranted())
{
Toast.makeText(getApplicationContext(), "Need to request permission", Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(getApplicationContext(), "No need to request permission", Toast.LENGTH_SHORT).show();
}
The app is saying that it needs to request permission, but it is just not prompting the request permission dialog. What is wrong with my code?
This are the permissions I added and use in the manifest file.
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.Manifest.permission.RECORD_AUDIO"/>
<uses-feature android:name="android.hardware.camera"/>
<uses-feature android:name="android.hardware.camera.autofocus"/>
<uses-feature android:name="android.hardware.camera.front"/>
<uses-feature android:name="android.hardware.camera.front.autofocus"/>
<uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true"/>
<uses-feature android:name="android.hardware.sensor.gyroscope" android:required="true"/>
<uses-feature android:name="android.software.vr.mode" android:required="true"/>
<uses-feature android:name="android.hardware.vr.high_performance" android:required="true"/>

For RECORD_AUDIO permission, correct permission string is
android.permission.RECORD_AUDIO
In your manifest you are using
<uses-permission android:name="android.Manifest.permission.RECORD_AUDIO"/>
which in incorrect and it must be
<uses-permission android:name="android.permission.RECORD_AUDIO"/>

add this in manifest file
in java
//Requesting run-time permissions
//Create placeholder for user's consent to record_audio permission.
//This will be used in handling callback
private final int MY_PERMISSIONS_RECORD_AUDIO = 1;
private void requestAudioPermissions() {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.RECORD_AUDIO)
!= PackageManager.PERMISSION_GRANTED) {
//When permission is not granted by user, show them message why this permission is needed.
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.RECORD_AUDIO)) {
Toast.makeText(this, "Please grant permissions to record audio", Toast.LENGTH_LONG).show();
//Give user option to still opt-in the permissions
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.RECORD_AUDIO},
MY_PERMISSIONS_RECORD_AUDIO);
} else {
// Show user dialog to grant permission to record audio
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.RECORD_AUDIO},
MY_PERMISSIONS_RECORD_AUDIO);
}
}
//If permission is granted, then go ahead recording audio
else if (ContextCompat.checkSelfPermission(this,
Manifest.permission.RECORD_AUDIO)
== PackageManager.PERMISSION_GRANTED) {
//Go ahead with recording audio now
recordAudio();
}
}
//Handling callback
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_RECORD_AUDIO: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay!
recordAudio();
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(this, "Permissions Denied to record audio", Toast.LENGTH_LONG).show();
}
return;
}
}
}

Trying to prompt user to set permissions on app launch in AndroidManifest

Okay, so in my AndroidManifest.xml file, I'm trying to set my permissions such that when the App launches, the user is asked to allow Location + Storage permissions.
I'm working off the BluetoothLeGatt example, and I used the uses-permission-sdk-23 tags to do it.
For reference, here's my code:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.bluetoothlegatt"
android:versionCode="1"
android:versionName="1.0">
<!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
<!-- Declare this required feature if you want to make the app available to BLE-capable
devices only. If you want to make your app available to devices that don't support BLE,
you should omit this in the manifest. Instead, determine BLE capability by using
PackageManager.hasSystemFeature(FEATURE_BLUETOOTH_LE) -->
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission-sdk-23 android:name="android.permission.BLUETOOTH"/>
<uses-permission-sdk-23 android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission-sdk-23 android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission-sdk-23 android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application android:label="#string/app_name"
android:icon="#drawable/ic_launcher"
android:theme="#android:style/Theme.Holo.Light">
<activity android:name=".DeviceScanActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name=".DeviceControlActivity"/>
<service android:name=".BluetoothLeService" android:enabled="true"/>
</application>
</manifest>

try this
step 1 :- add permission that you want in manifiest file like this
android.Manifest.permission.ACCESS_FINE_LOCATION,
android.Manifest.permission.ACCESS_COARSE_LOCATION,
step 2 : ask runtime permission like this
String permission = android.Manifest.permission.ACCESS_FINE_LOCATION;
if (ActivityCompat.checkSelfPermission(SearchCityClass.this, permission)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.
checkSelfPermission(SearchCityClass.this, android.Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(SearchCityClass.this, new String[]
{permission}, PERMISSION_GPS_CODE);
}
step 3: handle permission result like this
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions,
#NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == PERMISSION_GPS_CODE) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, location_permission_granted_msg, Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, location_permission_not_granted_msg, Toast.LENGTH_SHORT).show();
}
}
}

uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
In MainActivity add the following
if (Build.VERSION.SDK_INT < 23) {
//We already have permission. Write your function call over hear
} else {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// Here we are asking for permission
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
} else {
//If the app is running for second time, then we already have
permission. You can write your function here, if we already have
permission.//
}
}
do same for memory storage..

I am setting permissions in manifest but have to enable manually in `marshmallow`

Here is my manifest:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.CAMERA" />
This is all I needed for my project but I need it in code, not manually in app settings.

To use the new permission model in Marshmallow, you need to both specify your permissions in the manifest (as you did) AND request the permission at runtime. Only permissions that are considered as "dangerous" require the runtime request. Dangerous is defined as:
A higher-risk permission that would give a requesting application
access to private user data or control over the device that can
negatively impact the user. Because this type of permission introduces
potential risk, the system may not automatically grant it to the
requesting application. For example, any dangerous permissions
requested by an application may be displayed to the user and require
confirmation before proceeding, or some other approach may be taken to
avoid the user automatically allowing the use of such facilities.
From: https://developer.android.com/guide/topics/manifest/permission-element.html
Here's an example of code that checks if you need to request the permission. (Remember, even if the user grants your permission request, they can later revoke it in App Settings, so you need to check each time you need it.)
private final int REQUEST_PERMISSION_ACCESS_FINE_LOCATION=1;
private void requestAccessLocationPermission() {
int permissionCheck = ContextCompat.checkSelfPermission(
this, Manifest.permission.ACCESS_FINE_LOCATION);
if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
showExplanation("Permission Needed", "Rationale", Manifest.permission.ACCESS_FINE_LOCATION, REQUEST_PERMISSION_ACCESS_FINE_LOCATION);
} else {
requestPermission(Manifest.permission.ACCESS_FINE_LOCATION, REQUEST_PERMISSION_ACCESS_FINE_LOCATION);
}
} else {
Toast.makeText(MainActivity.this, "Permission (already) Granted!", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onRequestPermissionsResult(
int requestCode,
String permissions[],
int[] grantResults) {
switch (requestCode) {
case REQUEST_PERMISSION_ACCESS_FINE_LOCATION:
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(MainActivity.this, "Permission Granted!", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "Permission Denied!", Toast.LENGTH_SHORT).show();
}
}
}