小编Der*_*ung的帖子

我想支持至少api 10,我希望能够很好地设置我的偏好,我希望能够有标题(或显示PreferenceScreens).似乎PreferenceActivity不完全支持AppCompat着色,不适合.所以我正在尝试使用AppCompatActivity和PreferenceFragmentCompat.

public class Prefs extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (savedInstanceState == null)
            getSupportFragmentManager().beginTransaction()
                    .replace(android.R.id.content, new PreferencesFragment())
                    .commit();
    }

    public static class PreferencesFragment extends PreferenceFragmentCompat {
        @Override public void onCreate(final Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
        }

        @Override
        public void onDisplayPreferenceDialog(Preference preference) {
            // the following call results in a dialogue being shown
            super.onDisplayPreferenceDialog(preference);
        }

        @Override public void onNavigateToScreen(PreferenceScreen preferenceScreen) {
            // I can probably …

用Logclass跟踪运行时显示onReceive()方法没有调用,为什么？

动态注册广播接收器

 private void discoverDevices () {
    Log.e("MOHAB","BEFORE ON RECEIVE");

     mReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            Log.e("MOHAB","ON RECEIVE");
            String action = intent.getAction();
            // When discovery finds a device
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
                // Get the BluetoothDevice object from the Intent
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                // Add the name and address to an array adapter to show in a ListView
                Bluetooth b = new Bluetooth(device.getName(),device.getAddress());
                list.add(b);
            }
        }
    };
    Log.e("MOHAB","create intentFilter");
    // …