Beiträge von nono124

public class MainActivity extends AppCompatActivity {


    Button toggleBTButton;


    BTPanServiceListener bt;
    Object instance = null;
    Method setTetheringOn = null;
    Method isTetheringOn = null;
    Object mutex = new Object();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        toggleBTButton = findViewById(R.id.toggleBTButton);


        // Setup Methods
        try {
            Class<?> classBluetoothPan = Class.forName("android.bluetooth.BluetoothPan");
            Constructor<?> ctor = classBluetoothPan.getDeclaredConstructor(Context.class, BluetoothProfile.ServiceListener.class);
            ctor.setAccessible(true);
            Class[] paramSet = new Class[1];
            paramSet[0] = boolean.class;
            synchronized (mutex) {
                setTetheringOn = classBluetoothPan.getDeclaredMethod("setBluetoothTethering", paramSet);
                bt= new BTPanServiceListener(getApplicationContext());
                isTetheringOn = classBluetoothPan.getDeclaredMethod("isTetheringOn", null);
                instance = ctor.newInstance(getApplicationContext(), bt);
            }
        } catch (ClassNotFoundException ex) {
            Log.i("MainActivity", "Android-Version not supported!");
            ex.printStackTrace();
        } catch (Exception ex) {
            ex.printStackTrace();
        }


        toggleBTButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try {
                    //Check if BT-Tethering is on
                    if ((Boolean) isTetheringOn.invoke(instance, null)) {
                        Log.i("MainActivity", "Turn Tethering off");
                        setTetheringOn.invoke(instance, false);
                        toggleBTButton.setText("Turn on");
                        Toast.makeText(getApplicationContext(), "" + bt.nowVal, Toast.LENGTH_SHORT).show();


                    } else {
                        Log.i("MainActivity", "Turn Tethering on");
                        setTetheringOn.invoke(instance, true);
                        toggleBTButton.setText("Turn off");
                        Toast.makeText(getApplicationContext(), "" + bt.nowVal, Toast.LENGTH_SHORT).show();
                    }
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        });


    }


    public class BTPanServiceListener implements BluetoothProfile.ServiceListener {
        private final Context context;
        boolean nowVal;


        public BTPanServiceListener(final Context context) {
            this.context = context;
        }




        @Override
        public void onServiceConnected(final int profile, final BluetoothProfile proxy) {






            //Some code must be here or the compiler will optimize away this callback.
            Log.i("MyApp", "BTPan proxy connected");
            try {
                //boolean nowVal = ((Boolean) proxy.getClass().getMethod("isTetheringOn", new Class[0]).invoke(proxy, new Object[0])).booleanValue();
                nowVal = (Boolean) proxy.getClass().getMethod("isTetheringOn", new Class[0]).invoke(proxy, new Object[0]);
                Toast.makeText(context, "nowVal = " + nowVal, Toast.LENGTH_SHORT).show();
                if (nowVal) {
                    // proxy.getClass().getMethod("setBluetoothTethering", new Class[]{Boolean.TYPE}).invoke(proxy, Boolean.FALSE);
                    // proxy.getClass().getMethod("setBluetoothTethering", new Class[]{Boolean.TYPE}).invoke(proxy, Boolean.FALSE);
                    //  Toast.makeText(context, "onServiceConnected: Turning bluetooth tethering off", Toast.LENGTH_SHORT).show();


                    toggleBTButton.setText("Turn on");
                } else {
                    //  proxy.getClass().getMethod("setBluetoothTethering", new Class[]{Boolean.TYPE}).invoke(proxy, true);
                    //proxy.getClass().getMethod("setBluetoothTethering", new Class[]{Boolean.TYPE}).invoke(proxy, new Object[]{Boolean.valueOf(true)});
                    //proxy.getClass().getMethod("setBluetoothTethering", new Class[]{Boolean.TYPE}).invoke(proxy, Boolean.TRUE);
                    //  Toast.makeText(context, "onServiceConnected: Turning bluetooth tethering on", Toast.LENGTH_SHORT).show();


                    toggleBTButton.setText("Turn off");
                }


            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (NoSuchMethodException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }




            try {
                //Set Button Text
                if ((Boolean) isTetheringOn.invoke(instance, null)) {
                    toggleBTButton.setText("Turn off");
                } else {
                    toggleBTButton.setText("Turn on");
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }


        @Override
        public void onServiceDisconnected(final int profile) {
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="de.strait.bluetoothtethering">


    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />


    <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/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />


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


</manifest>

apply plugin: 'com.android.application'


android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "de.strait.bluetoothtethering"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}


dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    //implementation 'com.android.support:appcompat-v7:28.0.0'


    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0-alpha03'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-alpha03'


    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'


}