Android Things Bluetooth Le permissions - android-studio

Question

I am trying to debug may Android Things BLE app in Android Studio. I am trying to do a simple scan on my main activity thread but I keep getting this exception:
01-17 02:13:24.735 29032-29044/com.dv.iotitag W/Binder: Caught a RuntimeException from the binder stub implementation.
java.lang.SecurityException: Need ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission to get scan results
at android.os.Parcel.readException(Parcel.java:2004)
at android.os.Parcel.readException(Parcel.java:1950)
at android.bluetooth.IBluetoothGatt$Stub$Proxy.startScan(IBluetoothGatt.java:920)
at android.bluetooth.le.BluetoothLeScanner$BleScanCallbackWrapper.onScannerRegistered(BluetoothLeScanner.java:442)
at android.bluetooth.le.IScannerCallback$Stub.onTransact(IScannerCallback.java:56)
at android.os.Binder.execTransact(Binder.java:697)
I have the permissions in the manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dv.iotitag">
<uses-feature android:name="android.hardware.bluetooth_le" />
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
<uses-permission android:name="com.google.android.things.permission.MANAGE_BLUETOOTH" />
<application>
<uses-library android:name="com.google.android.things" />
<service
android:name="com.dv.androidthings.ble.common.BluetoothLeService"
android:enabled="true" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.IOT_LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
but I still keep getting the exception in debug mode. What am I doing wrong?

Answer 1

From API 23 (Android 6.0) it is not sufficient to declare permisions in Manifest.xml. You have to request them in runtime as described here.

Answer 2

Go to your applications inside your phone and make sure your have location enabled and have it turned on.
In you oncreate method call:
checkPermission();
public void checkPermission() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && checkSelfPermission(android.Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
//
} else {
ActivityCompat.requestPermissions(this, new String[]{
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION,}, 1);
}
}
}