Develop Reference

ACTIVITY_RECOGNITION permission is not autocompleted

I want to use the ACTIVITY_RECOGNITION
However when i type
<uses-permission android:name="com.google.android.gms.ACTI
Android Studio doesn't autocomplete this to
<uses-permission android:name="com.google.android.gms.ACTIVITY_RECOGNITION
Is that a problem? why wouldn't it autocomplete? how can i solve this issue?
thank you

Try to change your code to :
<uses-permission android:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION" />
Following the instruction in the ActivityRecognition document and the How to Recognize User Activity With Activity Recognition tutorial.
Hope this helps.

use this permission in menifest file com.google.android.gms.permission.ACTIVITY_RECOGNITION"

RequestPermissions not showing a dialog box

I found a lot of similar topics with the same threat but I still can't find a solution for my problem. I wrote this code to grant the writing permission to the app but there is no dialog box showing. I get in the monitor the No writing permission messages.
if(ContextCompat.checkSelfPermission(getContext(),Manifest.permission.WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED) {
Log.i("permissions", "No writing permission");
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 225);
I added the permission in the AndroidManifest fils
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Changed the target sdk targetSdkVersion 23, and I am using android 6.0.1.
Edit:
I also tied this code but it still not working
requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 225);

I had a similiar case. Do not try to call it with ActivityCompat from a Fragment. Instead use the given requestPermissions method from the Fragment e.g.
requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 225);

RequestPermissions Dialog will not be shown only in below 2 cases on device >= 6.0:
1) Either you have already given permission to the any of the Dangerous Permissions within the Category you are asking for.
2) You had clicked Never Ask Again checkbox when the dialog had shown previously.

Adding Permissions in AndroidManifest.xml in Android Studio?

In Eclipse we were able to add permissions in AndroidManifest.xml by going to AndroidManifest.xml->Permission-> Adding permissions.
How to add permissions in Android Studio? How can we get a list of all the permissions that we can add to an Activity ?

You can only type them manually, but the content assist helps you there, so it is pretty easy.
Add this line
<uses-permission android:name="android.permission."/>
and hit ctrl + space after the dot (or cmd + space on Mac). If you need an explanation for the permission, you can hit ctrl + q.

You can type them manually but the editor will assist you.
http://developer.android.com/reference/android/Manifest.permission.html
You can see the snap sot below.
As soon as you type "a" inside the quotes you get a list of permissions and also hint to move caret up and down to select the same.

Go to Android Manifest.xml
and be sure to add the <uses-permission tag > inside the manifest tag but Outside of all other tags..
<manifest xlmns:android...>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
This is an example of the permission of using Internet.

You can add manually in the manifest file within manifest tag by:
<uses-permission android:name="android.permission.CAMERA"/>
This permission is required to be able to access the camera device.

It's quite simple.
All you need to do is:
Right click above application tag and click on Generate
Click on XML tag
Click on user-permission
Enter the name of your permission.

Put these two line in your AndroidMainfest
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

android.permission.CALL_PHONE for tablets

I am developing an app and in the manifest I have:
<uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>
When I click on the button to execute this code:
Intent intentcall = new Intent();
intentcall.setAction(Intent.ACTION_CALL);
intentcall.setData(Uri.parse("tel:" + phonenumber)); // set the Uri
startActivity(intentcall);
It will run fine on phones, and on tablets it pops up with a display where you can view or add the number to contacts. However, if I keep the permission in the manifest, it isn't available for tablets in the market. How can I keep the code behavior and still have it display in the market for tablets as well as phones?

In the AndroidManifest you need:
<uses-feature android:name="android.hardware.telephony" android:required="false" />
The CALL_PHONE permission implies telephony is required, but if you specify that is not you won't be filtered.

Try to use Intent.ACTION_DIAL instead Intent.ACTION_CALL.
For example:
try {
Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + phone_number));
startActivity(intent);
} catch (Exception e) {
//TODO smth
}
And in this case you can completely remove these tags from AndroidManifest.xml:
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-feature android:name="android.hardware.telephony" android:required="false" />

Regarding "uses-feature" and it crashing - are you checking that telephony is available before actually making the call? It might be you need to do that extra step for the case when the app is on tablets. All you are saying in the manifest is that the feature is not required. It probably relies on you to actually implement the logic around that.

Instead of adding a user with the ACTION_CALL identifier, change it to ACTION_INSERT_OR_EDIT.
You'll need these permissions too, instead of the CALL_PHONE permission:
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>
Take a look at this related question:
can't find app on market

From google docs:
Declared elements are informational only, meaning that
the Android system itself does not check for matching feature support
on the device before installing an application
usage is only for google play

Failed to connect to camera service

I'm trying to access the camera on my phone. I'm writing a simple stub app prior to putting the code in a widget. I'm not getting very far. The code always throws a runtime exception "failed to connect to camera service" The code(pinched from a commonsware example) which goes wrong is:
#Override
public void onResume() {
super.onResume();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
Camera.CameraInfo info = new Camera.CameraInfo();
for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
Camera.getCameraInfo(i, info);
if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
try {
// Gets to here OK
camera = Camera.open(i);
} catch (Exception e) {
e.printStackTrace();
// throws runtime exception :"Failed to connect to camera service"
}
}
}
}
}
and my manifest is (corrected 20th Oct):
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.nbt.cameratest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="9" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:label="#string/app_name"
android:name=".CameraTestActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</application>
</manifest>
Can anyone please suggest what might be wrong?
UPDATE 20th Oct
Logcat in SDK 4.0 is broken and wont show the end of the log, so I've cut this bit as best as I can from command line adb logcat:
W/ServiceManager( 2588): Permission failure: android.permission.CAMERA from uid=10136 pid=5744
E/CameraService( 2588): Permission Denial: can't use the camera pid=5744, uid=10136
W/System.err( 5744): java.lang.RuntimeException: Fail to connect to camera service
W/System.err( 5744): at android.hardware.Camera.native_setup(Native Method)
W/System.err( 5744): at android.hardware.Camera.<init>(Camera.java:294)
W/System.err( 5744): at android.hardware.Camera.open(Camera.java:255)
etc..
I don't know why I haven't permission as it is declared in the manifest

Few things:
Why are your use-permissions and use-features tags in your activity tag. Generally, permissions are included as direct children of your <manifest> tag. This could be part of the problem.
According to the android camera open documentation, a runtime exception is thrown:
if connection to the camera service fails (for example, if the camera is in use by another process or device policy manager has disabled the camera)
Have you tried checking if the camera is being used by something else or if your policy manager has some setting where the camera is turned off?
Don't forget the <uses-feature android:name="android.hardware.camera.autofocus" /> for autofocus.
While I'm not sure if any of these will directly help you, I think they're worth investigating if for no other reason than to simply rule out. Due diligence if you will.
EDIT
As mentioned in the comments below, the solution was to move the uses-permissions up to above the application tag.

For newer android versions that support setting permissions per app (since Marshmallow, 6.0) the permission for camera could be disabled and should be enabled from the app settings.

Make sure to call the release() method to release the camera when it is no longer needed, or you will not be able to use the camera. Perhaps as a sanity check, see if your regular camera works. If it says it fails, then your previous attempts at runni

The problem is related to permission. Copy following code into onCreate() method. The issue will get solved.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[] {Manifest.permission.CAMERA}, 1);
}
}
After that wait for the user action and handle his decision.
#Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case CAMERA_PERMISSION_REQUEST_CODE:
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Start your camera handling here
} else {
AppUtils.showUserMessage("You declined to allow the app to access your camera", this);
}
}
}

I know this question has been answered long time ago, but I would like to add a small thing.
To everyone having the same error, make sure to add this permission in you manifest file:
<uses-permission android:name="android.permission.CAMERA" />
IMPORTANT to use the CAPITAL letters for CAMERA, as I had the permission with small letters and it didn't work.

running your code hundred times may affect the camera to function wrongly.Your activity may be performing correctly but system could not buy it.so camera forces stop.
One main tip all missed is rebooting your phone and not only eclipse..It worked for me..

since this question was asked 4 years back..and i didn't realised that unless mentioned by the Questioner..when there were no Run time permissions support.
but hoping it useful for the users who still caught in this situation..
Have a look at Run Time Permissions ,for me it solved the problem
when i added Run time permissions to grant camera access.
Alternatively you can grant permissions to the app manually by going to your mobile settings=>Apps=>(select your app)=>Permissions section in the appeared window and enable/disable desired permissions.
hope this will work.

I came up with the same problem and I'm sharing how I fixed it. It may help some people.
First, check your Android version. If it is running on Android 6.0 and higher (API level 23+), then you need to :
Declare a permission in the app manifest. Make sure to insert the permission above the application tag.
**<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />**
<application ...>
...
</application>
Then, request that the user approve each permission at runtime
if (ContextCompat.checkSelfPermission(thisActivity, Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
// here, Permission is not granted
ActivityCompat.requestPermissions(this, new String[] {android.Manifest.permission.CAMERA}, 50);
}
For more information, have a look at the API documentation here

when you use camera.open; and you finish using the camera write this commend camera.release(); this will stop the camera so you can use it again