Dynamic height for CollapsingReactHeader (#726)

This commit deprecates collapsingToolBarComponentHeight style property

android/app/src/main/java/com/reactnativenavigation/params/CollapsingTopBarParams.java

 public class CollapsingTopBarParams {
     public @Nullable String imageUri;
     public @Nullable String reactViewId;
-    public int reactViewHeight;
     public StyleParams.Color scrimColor;
     public CollapseBehaviour collapseBehaviour;
     public boolean expendOnTopTabChange;

android/app/src/main/java/com/reactnativenavigation/params/parsers/CollapsingTopBarParamsParser.java

         CollapsingTopBarParams result = new CollapsingTopBarParams();
         result.imageUri = params.getString("collapsingToolBarImage", null);
         result.reactViewId = params.getString("collapsingToolBarComponent", null);
-        result.reactViewHeight = params.getInt("collapsingToolBarComponentHeight");
         result.expendOnTopTabChange = params.getBoolean("expendCollapsingToolBarOnTopTabChange");
         result.scrimColor = getColor(params, "collapsingToolBarCollapsedColor", new StyleParams.Color(Color.WHITE));
         result.showTitleWhenCollapsed = hasReactView;

android/app/src/main/java/com/reactnativenavigation/views/ContentView.java

     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
-        int measuredHeight = viewMeasurer.getMeasuredHeight(heightMeasureSpec);
         setMeasuredDimension(viewMeasurer.getMeasuredWidth(widthMeasureSpec),
-                measuredHeight);
+                viewMeasurer.getMeasuredHeight(heightMeasureSpec));
     }
 
     @Override

android/app/src/main/java/com/reactnativenavigation/views/collapsingToolbar/CollapsingReactHeaderMeasurer.java

+package com.reactnativenavigation.views.collapsingToolbar;
+
+import android.view.ViewGroup;
+
+import com.reactnativenavigation.views.utils.ViewMeasurer;
+
+class CollapsingReactHeaderMeasurer extends ViewMeasurer {
+    private ViewGroup header;
+
+    CollapsingReactHeaderMeasurer(ViewGroup header) {
+        this.header = header;
+    }
+
+    @Override
+    public int getMeasuredHeight(int heightMeasureSpec) {
+        return hasChildren() ? header.getChildAt(0).getMeasuredHeight() : super.getMeasuredHeight(heightMeasureSpec);
+    }
+
+    private boolean hasChildren() {
+        return header.getChildCount() > 0;
+    }
+}

android/app/src/main/java/com/reactnativenavigation/views/collapsingToolbar/CollapsingTopBar.java

                     params,
                     new NavigationParams(Bundle.EMPTY),
                     scrollListener);
-            LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, (int) ViewUtils.convertDpToPixel(params.reactViewHeight));
-            titleBarAndContextualMenuContainer.addView(header, lp);
+            titleBarAndContextualMenuContainer.addView(header, new LayoutParams(MATCH_PARENT, WRAP_CONTENT));
             header.setOnHiddenListener(new CollapsingTopBarReactHeaderAnimator.OnHiddenListener() {
                 @Override
                 public void onHidden() {

android/app/src/main/java/com/reactnativenavigation/views/collapsingToolbar/CollapsingTopBarReactHeader.java

         listener = scrollListener;
         ViewConfiguration vc = ViewConfiguration.get(context);
         mTouchSlop = vc.getScaledTouchSlop();
-        createVisibilityAnimator(params.reactViewHeight);
+        setViewMeasurer(new CollapsingReactHeaderMeasurer(this));
+        createVisibilityAnimator(getHeight());
     }
 
-    private void createVisibilityAnimator(int reactViewHeight) {
-        float height = ViewUtils.convertDpToPixel(reactViewHeight);
-        visibilityAnimator = new CollapsingTopBarReactHeaderAnimator(this, height * 0.6f, height * 0.60f);
-        visibilityAnimator.setOnHiddenListener(this);
-        visibilityAnimator.setOnVisibleListener(this);
+    private void createVisibilityAnimator(final int reactViewHeight) {
+        ViewUtils.runOnPreDraw(this, new Runnable() {
+            @Override
+            public void run() {
+                final CollapsingTopBarReactHeader header = CollapsingTopBarReactHeader.this;
+                float height = ViewUtils.convertDpToPixel(reactViewHeight);
+                visibilityAnimator = new CollapsingTopBarReactHeaderAnimator(header, height * 0.6f, height * 0.60f);
+                visibilityAnimator.setOnHiddenListener(header);
+                visibilityAnimator.setOnVisibleListener(header);
+            }
+        });
     }
 
     public void collapse(float amount) {

src/deprecated/platformSpecificDeprecated.android.js

     topBarCollapseOnScroll: originalStyleObject.topBarCollapseOnScroll,
     collapsingToolBarImage: originalStyleObject.collapsingToolBarImage,
     collapsingToolBarComponent: originalStyleObject.collapsingToolBarComponent,
-    collapsingToolBarComponentHeight: originalStyleObject.collapsingToolBarComponentHeight,
     collapsingToolBarCollapsedColor: processColor(originalStyleObject.collapsingToolBarCollapsedColor),
     expendCollapsingToolBarOnTopTabChange: originalStyleObject.expendCollapsingToolBarOnTopTabChange,
     titleBarHidden: originalStyleObject.navBarHidden,