JNI: allow QString as a parameter to native methods

Expect a jstring on the va_list, and implicitly construct a QString from
that.
As a drive-by, allow native methods to take parameters by reference, and
move implementation details into a Detail namespace.

Add test coverage.

Change-Id: I31214938ccaea3f4d539b432e29d12434dd98377
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Petri Virkkunen <petri.virkkunen@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/auto/corelib/kernel/qjniobject/testdata/src/org/qtproject/qt/android/testdata/QtJniObjectTestClass.java b/tests/auto/corelib/kernel/qjniobject/testdata/src/org/qtproject/qt/android/testdata/QtJniObjectTestClass.java
index b56447198f..ef1c6e2f88 100644
--- a/tests/auto/corelib/kernel/qjniobject/testdata/src/org/qtproject/qt/android/testdata/QtJniObjectTestClass.java
+++ b/tests/auto/corelib/kernel/qjniobject/testdata/src/org/qtproject/qt/android/testdata/QtJniObjectTestClass.java
@@ -275,6 +275,8 @@ public class QtJniObjectTestClass
 
     // --------------------------------------------------------------------------------------------
     native public int callbackWithObject(QtJniObjectTestClass that);
+    native public int callbackWithObjectRef(QtJniObjectTestClass that);
+    native public int callbackWithString(String string);
     native public int callbackWithByte(byte value);
     native public int callbackWithBoolean(boolean value);
     native public int callbackWithInt(int value);
@@ -285,6 +287,16 @@ public class QtJniObjectTestClass
         return callbackWithObject(that);
     }
 
+    public int callMeBackWithObjectRef(QtJniObjectTestClass that)
+    {
+        return callbackWithObjectRef(that);
+    }
+
+    public int callMeBackWithString(String string)
+    {
+        return callbackWithString(string);
+    }
+
     public int callMeBackWithByte(byte value)
     {
         return callbackWithByte(value);