Add compile-time generation of JNI class names

As with method signatures, register class names using template function
specialization in the QtJniTypes namespace, and then declare C++ types
as JNI classes with a class name string. Such classes implicitly get
registered as JNI types as well.

Add a QJniObject construct method (since C++ constructors that are
templates cannot be explicitly instantiated with a type), and a
QJniEnvironment::findClass overload.

Add test coverage, also for the recently added macros for native
methods.

As a drive-by, change the name of the Q_JNI_DECLARE_NATIVE_METHOD
macro to Q_DECLARE_JNI_NATIVE_METHOD for consistency.

Change-Id: Ic19562d78da726f202b3bdf4e9354e8ad24d8bd9
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

1 files changed, 6 insertions, 1 deletions

diff --git a/tests/auto/corelib/kernel/qjniobject/tst_qjniobject.cpp b/tests/auto/corelib/kernel/qjniobject/tst_qjniobject.cpp
index 8faa9b6fbb..e57785c5c5 100644
--- a/tests/auto/corelib/kernel/qjniobject/tst_qjniobject.cpp
+++ b/tests/auto/corelib/kernel/qjniobject/tst_qjniobject.cpp
@@ -135,6 +135,11 @@ void tst_QJniObject::ctor()
     }
 
     {
+        QJniObject object = QJniObject::construct<jstring>();
+        QVERIFY(object.isValid());
+    }
+
+    {
         QJniObject string = QJniObject::fromString(QLatin1String("Hello, Java"));
         QJniObject object("java/lang/String", "(Ljava/lang/String;)V", string.object<jstring>());
         QVERIFY(object.isValid());
@@ -143,7 +148,7 @@ void tst_QJniObject::ctor()
 
     {
         QJniObject string = QJniObject::fromString(QLatin1String("Hello, Java"));
-        QJniObject object("java/lang/String", string.object<jstring>());
+        QJniObject object = QJniObject::construct<jstring>(string.object<jstring>());
         QVERIFY(object.isValid());
         QCOMPARE(string.toString(), object.toString());
     }