LayoutLib: explicitely override PropertyValuesHolder native code.

Change-Id: Ic7dd9efc990d01b20db144117cb11eb130349048

tools/layoutlib/bridge/src/android/animation/PropertyValuesHolder_Delegate.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.animation;
+
+import com.android.layoutlib.bridge.impl.DelegateManager;
+
+/**
+ * Delegate implementing the native methods of android.animation.PropertyValuesHolder
+ *
+ * Through the layoutlib_create tool, the original native methods of PropertyValuesHolder have been
+ * replaced by calls to methods of the same name in this delegate class.
+ *
+ * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager}
+ * around to map int to instance of the delegate.
+ *
+ * The main goal of this class' methods are to provide a native way to access setters and getters
+ * on some object. In this case we want to default to using Java reflection instead so the native
+ * methods do nothing.
+ *
+ */
+/*package*/ class PropertyValuesHolder_Delegate {
+
+    /*package*/ static int nGetIntMethod(Class<?> targetClass, String methodName) {
+        // return 0 to force PropertyValuesHolder to use Java reflection.
+        return 0;
+    }
+
+    /*package*/ static int nGetFloatMethod(Class<?> targetClass, String methodName) {
+        // return 0 to force PropertyValuesHolder to use Java reflection.
+        return 0;
+    }
+
+    /*package*/ static void nCallIntMethod(Object target, int methodID, int arg) {
+        // do nothing
+    }
+
+    /*package*/ static void nCallFloatMethod(Object target, int methodID, float arg) {
+        // do nothing
+    }
+}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/LayoutSceneImpl.java

@@ -458,16 +458,10 @@ public class LayoutSceneImpl {
                 mCanvas.setDensity(mParams.getDensity());
             }
 
-            long preDrawTime = System.currentTimeMillis();
-
             mViewRoot.draw(mCanvas);
 
-            long drawTime = System.currentTimeMillis();
-
             mViewInfo = visit(((ViewGroup)mViewRoot).getChildAt(0), mContext);
 
-            System.out.println(String.format("rendering (ms): %03d", drawTime - preDrawTime));
-
             // success!
             return SceneStatus.SUCCESS.createResult();
         } catch (Throwable e) {

tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java

@@ -105,6 +105,7 @@ public final class CreateInfo implements ICreateInfo {
      * The list of classes on which to delegate all native methods.
      */
     private final static String[] DELEGATE_CLASS_NATIVES = new String[] {
+        "android.animation.PropertyValuesHolder",
         "android.graphics.Bitmap",
         "android.graphics.Canvas",
         "android.graphics.DashPathEffect",