QAndroidJniEnvironment Class▲
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Header: QAndroidJniEnvironment
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Since: Qt 5.2
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qmake: QT += androidextras
Detailed Description▲
Member Function Documentation▲
QAndroidJniEnvironment::QAndroidJniEnvironment()▲
Constructs a new QAndroidJniEnvironment object and attach the current thread to the Java VM.
Sélectionnez
bool exceptionCheck()
{
/*
The QAndroidJniEnvironment attaches the current thread to the JavaVM on
creation and detach when it goes out of scope.
*/
QAndroidJniEnvironment qjniEnv;
return qjniEnv->ExceptionCheck();
}QAndroidJniEnvironment::~QAndroidJniEnvironment()▲
Detaches the current thread from the Java VM and destroys the QAndroidJniEnvironment object.
[since Qt 5.12] jclass QAndroidJniEnvironment::findClass(const char *className)▲
Searches for className using all available class loaders. Qt on Android uses a custom class loader to load all the .jar files and it must be used to find any classes that are created by that class loader because these classes are not visible in the default class loader.
Returns the class pointer or null if is not found.
This function was introduced in Qt 5.12.
[static] int *QAndroidJniEnvironment::javaVM()▲
Returns the Java VM interface.
JNIEnv *QAndroidJniEnvironment::operator JNIEnv *() const▲
Returns the JNI Environment pointer.
JNIEnv *QAndroidJniEnvironment::operator->()▲
Provides access to the QAndroidJniEnvironment's JNIEnv pointer.