Android: Fix hover-event handling.

The accessibility delegate needs to intercept the hover events before
the view gets them, but since the dispatchHoverEvent() method was added
in API level 14 and we build with API level < 14, we can't call the
super class implementation (e.g., when the event isn't handled by
the accessibility delegate). In the previous implementation we where
trying to solve this by using the reflection API, but that does not
provide a solution to call the super class implementation
(Note: It's possible with JDK 7 or newer), so the code would call
itself recursively and we would eventually get a stack overflow
exception.

This change uses the OnHoverListener class to intercept the hover
events, this way we avoid "overriding" the dispatchHoverEvent() method
in QtSurface and therefore avoid the problem it causes.

Task-number: QTBUG-38905
Change-Id: I8b3cbad718d8524042397bb877e39e3005bfb4ce
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>

1 files changed, 0 insertions, 18 deletions

diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java b/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
index 45a80a3dbb..ca3f20f11b 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
@@ -110,24 +110,6 @@ public class QtSurface extends SurfaceView implements SurfaceHolder.Callback
         }
     }
 
-    public boolean dispatchHoverEvent(MotionEvent event) {
-        // Always attempt to dispatch hover events to accessibility first.
-        if (m_accessibilityDelegate != null) {
-            try {
-                Method dispHoverA11y = m_accessibilityDelegate.getClass().getMethod("dispatchHoverEvent", MotionEvent.class);
-                boolean ret = (Boolean) dispHoverA11y.invoke(m_accessibilityDelegate, event);
-                if (ret)
-                    return true;
-                SurfaceView view = (SurfaceView) this;
-                Method dispHoverView = view.getClass().getMethod("dispatchHoverEvent", MotionEvent.class);
-                return (Boolean) dispHoverView.invoke(view, event);
-            } catch (Exception e) {
-                Log.w("Qt A11y", "EXCEPTION in dispatchHoverEvent for Accessibility: " + e);
-            }
-        }
-        return false;
-    }
-
     @Override
     public void surfaceChanged(SurfaceHolder holder, int format, int width, int height)
     {