CellBackendHelper.java 文件源码

/**
 * Call this in {@link org.microg.nlp.api.LocationBackendService#onOpen()}.
 */
@Override
public synchronized void onOpen() {
    super.onOpen();

    if (phoneStateListener == null) {
        Handler mainHandler = new Handler(context.getMainLooper());
        mainHandler.post(new Runnable() {
            @Override
            public void run() {
                phoneStateListener = new PhoneStateListener() {

                    @Override
                    public void onCellInfoChanged(List<CellInfo> cellInfo) {
                        if (cellInfo != null && !cellInfo.isEmpty()) {
                            onCellsChanged(cellInfo);
                        } else if (supportsCellInfoChanged) {
                            supportsCellInfoChanged = false;
                            onSignalStrengthsChanged(null);
                        }
                    }

                    @Override
                    public void onSignalStrengthsChanged(SignalStrength signalStrength) {
                        if (!supportsCellInfoChanged) {
                            fallbackScan();
                        }
                    }
                };
                registerPhoneStateListener();
            }
        });
    } else {
        registerPhoneStateListener();
    }
}