針對API版本的語法

mhfo

@TargetApi(Build.VERSION_CODES.ECLAIR)
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_connect:
        mBluetoothLeService.connect(mDeviceAddress);
        return true;
    case R.id.menu_disconnect:
        mBluetoothLeService.disconnect();
        return true;
    case android.R.id.home:
        onBackPressed();
        return true;
    }
    return super.onOptionsItemSelected(item);
}