java - 在Qt中调用java函数

Question

我们有一个让人打电话的应用程序。我想在用户接到电话时打开屏幕，并在用户关闭它时关闭它。我试过两次。第一次，我默认添加标志。它正在工作。但在第二种情况下，我不再添加了。

在 java 文件中，我定义了 turnFlags 来打开/关闭标志。

CustomMainActivity.java:

public void turnFlags(boolean onOff)
{
    if(onOff)
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
            | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED

          | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON

            | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);   
    else
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
        | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED

      | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON

        | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);    
}

在 C++ 文件中，我决定在不同情况下使用 turnFlags。我想在 callInvited 时打开它，在 callClosed 时关闭它。

    void VoipTask::callInvite()
    {
    #ifdef Q_OS_ANDROID
        QtAndroid::androidActivity().callMethod<void>("turnFlags", "(Z)V", true);
    #endif
        CGlobalZone::m_callType = IncomingCall;

    #ifdef Q_OS_ANDROID

        m_answerDate = m_callDate = QDateTime::currentDateTime();
        m_callState = MissedCall;
        m_transactionId = QtAndroid::androidActivity().callMethod<jint>("getTransactionId");
        m_callId = QtAndroid::androidActivity().callMethod<jint>("getCallId");
        m_dialogId = QtAndroid::androidActivity().callMethod<jint>("getDialogId");
    #else
        CGlobalZone::m_dialNumber = m_callNumber;
    #endif

        QApplication::postEvent(CGlobalZone::m_callsManager, new QEvent(QEvent::Type(CGlobalZone::HANDLE_CALL_EVENT)));

        startAudioDevices();

    #if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
        if (CGlobalZone::m_ringtone.isEmpty())
            ring();
        else
            playRingtone();
    #endif
    }
void VoipTask::callClosed()
{
#ifdef Q_OS_ANDROID
    QtAndroid::androidActivity().callMethod<void>("turnFlags", "(Z)V", false);
#endif
    stopConversation();
    stopAudioDevices();
    stopVoip();
}

Answer 1

您已经定义了两次 #ifdef Q_OS_ANDROID。将其更改为:

   void VoipTask::callInvite()
    {

        CGlobalZone::m_callType = IncomingCall;

    #ifdef Q_OS_ANDROID

        m_answerDate = m_callDate = QDateTime::currentDateTime();
        m_callState = MissedCall;
        QtAndroid::androidActivity().callMethod<void>("turnFlags", "(Z)V", true);
        m_transactionId = QtAndroid::androidActivity().callMethod<jint>("getTransactionId");
        m_callId = QtAndroid::androidActivity().callMethod<jint>("getCallId");
        m_dialogId = QtAndroid::androidActivity().callMethod<jint>("getDialogId");
    #else
        CGlobalZone::m_dialNumber = m_callNumber;
    #endif

        QApplication::postEvent(CGlobalZone::m_callsManager, new QEvent(QEvent::Type(CGlobalZone::HANDLE_CALL_EVENT)));

        startAudioDevices();

    #if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
        if (CGlobalZone::m_ringtone.isEmpty())
            ring();
        else
            playRingtone();
    #endif
    }