java.lang.SecurityException: Need android.permission.BLUETOOTH_CONNECT permission for AttributionSource

Question

Please understand that the question may be a little dizzy because it's my first time asking a question. Also, please understand that grammar may be strange because I am not good at English and use a translator.

I'm a person who is making apps using java in Android studios.

There was a continuous error trying to use Bluetooth. There were so many errors that I could easily find a solution, but it didn't apply to me.

Error Log

Process: org.techtown.push.bluetoothtest2, PID: 10852
    java.lang.RuntimeException: Unable to start activity ComponentInfo{org.techtown.push.bluetoothtest2/org.techtown.push.bluetoothtest2.MainActivity}: java.lang.SecurityException: Need android.permission.BLUETOOTH_CONNECT permission for AttributionSource { uid = 10158, packageName = org.techtown.push.bluetoothtest2, attributionTag = null, token = android.os.BinderProxy@f43a396, next = null }: AdapterService getBondedDevices
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3635)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3792)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2210)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loopOnce(Looper.java:201)
        at android.os.Looper.loop(Looper.java:288)
        at android.app.ActivityThread.main(ActivityThread.java:7839)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
     Caused by: java.lang.SecurityException: Need android.permission.BLUETOOTH_CONNECT permission for AttributionSource { uid = 10158, packageName = org.techtown.push.bluetoothtest2, attributionTag = null, token = android.os.BinderProxy@f43a396, next = null }: AdapterService getBondedDevices
        at android.os.Parcel.createExceptionOrNull(Parcel.java:2425)
        at android.os.Parcel.createException(Parcel.java:2409)
        at android.os.Parcel.readException(Parcel.java:2392)
        at android.os.Parcel.readException(Parcel.java:2334)
        at android.bluetooth.IBluetooth$Stub$Proxy.getBondedDevices(IBluetooth.java:3077)
        at android.bluetooth.BluetoothAdapter.getBondedDevices(BluetoothAdapter.java:2491)
        at org.techtown.push.bluetoothtest2.MainActivity.showPairedDevicesListDialog(MainActivity.java:300)
        at org.techtown.push.bluetoothtest2.MainActivity.onCreate(MainActivity.java:80)
        at android.app.Activity.performCreate(Activity.java:8051)
        at android.app.Activity.performCreate(Activity.java:8031)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1329)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3608)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3792) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2210) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loopOnce(Looper.java:201) 
        at android.os.Looper.loop(Looper.java:288) 
        at android.app.ActivityThread.main(ActivityThread.java:7839) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003) 

I think this sentence in the middle is the cause of the error.

Caused by: java.lang.SecurityException: Need android.permission.BLUETOOTH_CONNECT permission for AttributionSource { uid = 10158, packageName = org.techtown.push.bluetoothtest2, attributionTag = null, token = android.os.BinderProxy@f43a396, next = null }: AdapterService getBondedDevices

But I've already applied a solution to the problem. This is my Manifest.xml.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.techtown.push.bluetoothtest2">

    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
    <uses-feature android:name="android.hardware.bluetooth" android:required="false"/>
    <uses-feature android:name="android.hardware.bluetooth_le" android:required="false"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Bluetoothtest2">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

I applied it because I saw that I needed "android.permission.BLUETOOTH_CONNECT permission." However, errors continue to occur.

Am I misunderstanding something? Or did I make a mistake in mainactivty.java?

For your information, I made it like this when I made a project.

minimun sdk : API 16 : Android 4.1 (Jelly Bean)

If there is no problem with the file you wrote down, please tell me to review the Java code again. Thank you.

Answer 1

since Android 6.0 not every permission is granted just because its placed in manifest. you have to handle runtime permission flow with BLUETOOTH_CONNECT one (how to request in HERE)

The BLUETOOTH_ADVERTISE, BLUETOOTH_CONNECT, and BLUETOOTH_SCAN permissions are runtime permissions. Therefore, you must explicitly request user approval in your app before you can look for Bluetooth devices, make a device discoverable to other devices, or communicate with already-paired Bluetooth devices.