Android上的Qt/QML - onReadingChanged

Question

我按照步驟一步步運行了非常漂亮的Digia示例，以運行Qt/QML on Android。

當我點擊[建設]從IDE-QT，輸出看起來不錯：

Running steps for project bubble... 
Configuration unchanged, skipping qmake step. 
Starting: "/usr/bin/make" 
make: Nothing to be done for `first'. 
The process "/usr/bin/make" exited normally. 
Elapsed time: 00:00. 

[運行QMAKE]

Running steps for project bubble... 
Starting: "/.../qt5/creator/Qt5.1.1/5.1.1/gcc_64/bin/qmake" /~/Desktop/bubble/bubble.pro -r -spec linux-g++ CONFIG+=debug CONFIG+=declarative_debug CONFIG+=qml_debug 
The process "/.../qt5/creator/Qt5.1.1/5.1.1/gcc_64/bin/qmake" exited normally. 

[運行]

QML debugging is enabled. Only use this in a safe environment. 
QQmlApplicationEngine failed to load component 
qrc:///bubble.qml:38 Cannot assign to non-existent property "onReadingChanged" 

我也閱讀qmlviewer在Qt5上沒有更多使用： No qmlviewer installed。

安裝了Android SDK NDK，並且該設備已啓用並處於開發人員模式，並且由於錯誤消息僅對QML抱怨，我猜這不應該是應用程序未運行的原因。

歡迎您提出任何建議。

Answer 1

您的傳感器沒有正確設置/激活。試試這個：

OrientationSensor { 
id: orientation 
active: true 

onReadingChanged: { 

    if (reading.orientation == OrientationReading.FaceUp) 
     content.state = "FaceUp"; 

    // ... more tests for different orientations ... 
} 
} 

欲瞭解更多信息，請看QtMobility。