Question

我正在做一个简单的示例，将我的qt android项目与java文件链接。但是，在遵循所有上述更改之后，在线QT无法找到Java文件。我已将Java文件保存在根目录中。

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow) {
    ui->setupUi(this);
    NetworkConnectionObject = new NetworkConnection();
    QAndroidJniObject::callStaticMethod<jint>
                            ("OrientationChanger" // class name
                            , "change" // method name
                            , "(I)I" // signature
                            , 1);    // setScreenOrientation(1); }

Java文件是

public class OrientationChanger
{
    public static int change(int n)
    {
        switch(n)
        {
               case 0:
                   setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                   break;
               case 1:
                   setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                   break;
           }
    }
}

专业文件为

QT       += core gui network androidextras

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = AndroisShop
TEMPLATE = app

DEFINES += QT_DEPRECATED_WARNINGS

CONFIG += c++11

SOURCES += \
        main.cpp \
        mainwindow.cpp \
    secondscreen.cpp \
    networkconnection.cpp \
    shoppingcardconnection.cpp

HEADERS += \
        mainwindow.h \
    secondscreen.h \
    networkconnection.h \
    shoppingcardconnection.h

FORMS += \
        mainwindow.ui \
    secondscreen.ui

CONFIG += mobility
MOBILITY =

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

DISTFILES += \
    OrientationChanger.java

看起来问题出在项目文件中的Java文件链接上，但不知道问题出在哪里。

错误是

W/System.err(16145): java.lang.ClassNotFoundException: Didn't find class "OrientationChanger" on path:

QT Android Extras中的Java文件位置

0 个答案: