QtAndroid 名稱空間

The QtAndroid namespace provides miscellaneous functions to aid Android development. 更多...

頭：	#include <QtAndroid>
qmake:	QT += androidextras
Since:	Qt 5.3

類型

typedef

Runnable

函數

QAndroidJniObject	androidActivity ()
QAndroidJniObject	androidContext ()
int	androidSdkVersion ()
QAndroidJniObject	androidService ()
void	hideSplashScreen ()
void	runOnAndroidThread (const Runnable & runnable )
void	runOnAndroidThreadSync (const Runnable & runnable , int timeoutMs = INT_MAX)
void	startActivity (const QAndroidJniObject & intent , int receiverRequestCode , QAndroidActivityResultReceiver * resultReceiver = nullptr)
void	startIntentSender (const QAndroidJniObject & intentSender , int receiverRequestCode , QAndroidActivityResultReceiver * resultReceiver = nullptr)

詳細描述

The QtAndroid namespace provides miscellaneous functions to aid Android development.

類型文檔編製

typedef QtAndroid:: Runnable

函數文檔編製

QAndroidJniObject QtAndroid:: androidActivity ()

Returns a handle to this application's main Activity

該函數在 Qt 5.3 引入。

另請參閱 QAndroidJniObject , androidService ()，和 androidContext ().

QAndroidJniObject QtAndroid:: androidContext ()

Returns a handle to this application's main Context. Depending on the nature of the application the Context object is either the main Service or Activity object.

該函數在 Qt 5.8 引入。

另請參閱 QAndroidJniObject , androidActivity ()，和 androidService ().

int QtAndroid:: androidSdkVersion ()

返迴 Android SDK 版本。這又稱為 API 級彆。

該函數在 Qt 5.3 引入。

QAndroidJniObject QtAndroid:: androidService ()

Returns a handle to this application's main Service

該函數在 Qt 5.7 引入。

另請參閱 QAndroidJniObject , androidActivity ()，和 androidContext ().

void QtAndroid:: hideSplashScreen ()

Hides the splash screen.

該函數在 Qt 5.7 引入。

void QtAndroid:: runOnAndroidThread (const Runnable & runnable )

Posts the given runnable on the android thread. The runnable will be queued and executed on the Android UI thread, unless it called on the Android UI thread, in which case the runnable will be executed immediately.

This function is useful to set asynchronously properties of objects that must be set on on Android UI thread.

該函數在 Qt 5.7 引入。

void QtAndroid:: runOnAndroidThreadSync (const Runnable & runnable , int timeoutMs = INT_MAX)

Posts the runnable on the Android UI thread and waits until the runnable is executed, or until timeoutMs has passed

This function is useful to create objects, or get properties on Android UI thread:

QAndroidJniObject javaControl;
QtAndroid::runOnAndroidThreadSync([&javaControl](){
    // create our Java control on Android UI thread.
    javaControl = QAndroidJniObject("android/webkit/WebView",
                                                "(Landroid/content/Context;)V",
                                                QtAndroid::androidActivity().object<jobject>());
    javaControl.callMethod<void>("setWebViewClient",
                                   "(Landroid/webkit/WebViewClient;)V",
                                   QAndroidJniObject("android/webkit/WebViewClient").object());
});
// Continue the execution normally
qDebug() << javaControl.isValid();

該函數在 Qt 5.7 引入。

void QtAndroid:: startActivity (const QAndroidJniObject & intent , int receiverRequestCode , QAndroidActivityResultReceiver * resultReceiver = nullptr)

Starts the activity given by intent and provides the result asynchronously through the resultReceiver if this is non-null.

若 resultReceiver 為 null，那麼 startActivity() 方法在 androidActivity() 將被調用。否則 startActivityForResult() 將被調用。

The receiverRequestCode is a request code unique to the resultReceiver , and will be returned along with the result, making it possible to use the same receiver for more than one intent.

該函數在 Qt 5.3 引入。

void QtAndroid:: startIntentSender (const QAndroidJniObject & intentSender , int receiverRequestCode , QAndroidActivityResultReceiver * resultReceiver = nullptr)

Starts the activity given by intentSender and provides the result asynchronously through the resultReceiver if this is non-null.

若 resultReceiver 為 null，那麼 startIntentSender() 方法在 androidActivity() 將被調用。否則 startIntentSenderForResult() 將被調用。

The receiverRequestCode is a request code unique to the resultReceiver , and will be returned along with the result, making it possible to use the same receiver for more than one intent.

該函數在 Qt 5.3 引入。