Question

I want to open bluetooth settings on button click
like this see image

HomeActivity.java

button.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                final Intent intent = new Intent(Intent.ACTION_MAIN, null);
                intent.addCategory(Intent.CATEGORY_LAUNCHER);
                final ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.bluetoothSettings");
                intent.setComponent(cn);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity( intent);
            }
        });

Answer 1

use

ComponentName cn = new ComponentName("com.android.settings", 
                   "com.android.settings.bluetooth.BluetoothSettings");

instead of

final ComponentName cn = new ComponentName("com.android.settings", 
                              "com.android.settings.bluetoothSettings");

to launch BluetoothSettings settings