Fix DisplayMetrics KeyboardListener dependency

Summary:
public
KeyboardListener needs DisplayMetrics to be initialized when it is attached. At
the moment, this breaks easily whenever we change these components, since DisplayMetrics are intialized
in a module and KeyboardListener is created eagerly in ReactRootView, whereas
ReactRootView can exist without the instance.
This changes to create DisplayMetrics as soon as possible, when the react
instance is built. The KeyboardListener is created and attached after the ReactRootView is
attached to an existing instance, point at which DisplayMetrics have to be
initialized.

Reviewed By: dmmiller

Differential Revision: D2911351

fb-gh-sync-id: 64d1805c5d5b2f6876adb694b565a2df059b381d

ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerImpl.java

@@ -11,6 +11,8 @@ package com.facebook.react;
 
 import javax.annotation.Nullable;
 
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
@@ -21,8 +23,12 @@ import android.app.Application;
 import android.content.Context;
 import android.content.Intent;
 import android.os.AsyncTask;
+import android.os.Build;
 import android.os.Bundle;
+import android.util.DisplayMetrics;
+import android.view.Display;
 import android.view.View;
+import android.view.WindowManager;
 
 import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
@@ -58,6 +64,7 @@ import com.facebook.react.devsupport.ReactInstanceDevCommandsHandler;
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
 import com.facebook.react.uimanager.AppRegistry;
+import com.facebook.react.uimanager.DisplayMetricsHolder;
 import com.facebook.react.uimanager.UIImplementationProvider;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewManager;
@@ -261,6 +268,7 @@ import static com.facebook.react.bridge.ReactMarkerConstants.*;
 
     // TODO(9577825): remove this
     ApplicationHolder.setApplication((Application) applicationContext.getApplicationContext());
+    setDisplayMetrics(applicationContext);
 
     mApplicationContext = applicationContext;
     mJSBundleFile = jsBundleFile;
@@ -299,6 +307,38 @@ import static com.facebook.react.bridge.ReactMarkerConstants.*;
     SoLoader.init(applicationContext, /* native exopackage */ false);
   }
 
+  private static void setDisplayMetrics(Context context) {
+    DisplayMetrics displayMetrics = new DisplayMetrics();
+    displayMetrics.setTo(context.getResources().getDisplayMetrics());
+    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+    Display display = wm.getDefaultDisplay();
+
+    // Get the real display metrics if we are using API level 17 or higher.
+    // The real metrics include system decor elements (e.g. soft menu bar).
+    //
+    // See: http://developer.android.com/reference/android/view/Display.html#getRealMetrics(android.util.DisplayMetrics)
+    if (Build.VERSION.SDK_INT >= 17){
+      display.getRealMetrics(displayMetrics);
+
+    } else {
+      // For 14 <= API level <= 16, we need to invoke getRawHeight and getRawWidth to get the real dimensions.
+      // Since react-native only supports API level 16+ we don't have to worry about other cases.
+      //
+      // Reflection exceptions are rethrown at runtime.
+      //
+      // See: http://stackoverflow.com/questions/14341041/how-to-get-real-screen-height-and-width/23861333#23861333
+      try {
+        Method mGetRawH = Display.class.getMethod("getRawHeight");
+        Method mGetRawW = Display.class.getMethod("getRawWidth");
+        displayMetrics.widthPixels = (Integer) mGetRawW.invoke(display);
+        displayMetrics.heightPixels = (Integer) mGetRawH.invoke(display);
+      } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
+        throw new RuntimeException("Error getting real dimensions for API level < 17", e);
+      }
+    }
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
+  }
+
   /**
    * Trigger react context initialization asynchronously in a background async task. This enables
    * applications to pre-load the application JS, and execute global code before

ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java

@@ -55,11 +55,10 @@ import com.facebook.react.uimanager.events.TouchEventType;
  */
 public class ReactRootView extends SizeMonitoringFrameLayout implements RootView {
 
-  private final KeyboardListener mKeyboardListener = new KeyboardListener();
-
   private @Nullable ReactInstanceManager mReactInstanceManager;
   private @Nullable String mJSModuleName;
   private @Nullable Bundle mLaunchOptions;
+  private @Nullable KeyboardListener mKeyboardListener;
   private int mTargetTag = -1;
   private final float[] mTargetCoordinates = new float[2];
   private boolean mChildIsHandlingNativeGesture = false;
@@ -107,7 +106,7 @@ public class ReactRootView extends SizeMonitoringFrameLayout implements RootView
           Assertions.assertNotNull(mReactInstanceManager)
               .attachMeasuredRootView(ReactRootView.this);
           mIsAttachedToInstance = true;
-          getViewTreeObserver().addOnGlobalLayoutListener(mKeyboardListener);
+          getViewTreeObserver().addOnGlobalLayoutListener(getKeyboardListener());
         }
       });
     }
@@ -298,7 +297,7 @@ public class ReactRootView extends SizeMonitoringFrameLayout implements RootView
     if (mReactInstanceManager != null && !mAttachScheduled) {
       mReactInstanceManager.detachRootView(this);
       mIsAttachedToInstance = false;
-      getViewTreeObserver().removeOnGlobalLayoutListener(mKeyboardListener);
+      getViewTreeObserver().removeOnGlobalLayoutListener(getKeyboardListener());
     }
   }
 
@@ -356,7 +355,7 @@ public class ReactRootView extends SizeMonitoringFrameLayout implements RootView
     if (mWasMeasured && mIsAttachedToWindow) {
       mReactInstanceManager.attachMeasuredRootView(this);
       mIsAttachedToInstance = true;
-      getViewTreeObserver().addOnGlobalLayoutListener(mKeyboardListener);
+      getViewTreeObserver().addOnGlobalLayoutListener(getKeyboardListener());
     } else {
       mAttachScheduled = true;
     }
@@ -381,9 +380,21 @@ public class ReactRootView extends SizeMonitoringFrameLayout implements RootView
     mWasMeasured = true;
   }
 
+  private KeyboardListener getKeyboardListener() {
+    if (mKeyboardListener == null) {
+      mKeyboardListener = new KeyboardListener();
+    }
+    return mKeyboardListener;
+  }
+
   private class KeyboardListener implements ViewTreeObserver.OnGlobalLayoutListener {
+    private final Rect mVisibleViewArea;
+
     private int mKeyboardHeight = 0;
-    private final Rect mVisibleViewArea = new Rect();
+
+    /* package */ KeyboardListener() {
+      mVisibleViewArea = new Rect();
+    }
 
     @Override
     public void onGlobalLayout() {

ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java

@@ -11,22 +11,10 @@ package com.facebook.react.uimanager;
 
 import javax.annotation.Nullable;
 
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
-import android.content.Context;
-import android.os.Build;
-import android.util.DisplayMetrics;
-import android.view.Display;
-import android.view.WindowManager;
-
-import com.facebook.csslayout.CSSLayoutContext;
-import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.animation.Animation;
-import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.LifecycleEventListener;
 import com.facebook.react.bridge.OnBatchCompleteListener;
@@ -35,7 +23,6 @@ import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
-import com.facebook.react.bridge.WritableArray;
 import com.facebook.react.uimanager.debug.NotThreadSafeViewHierarchyUpdateDebugListener;
 import com.facebook.react.uimanager.events.EventDispatcher;
 import com.facebook.systrace.Systrace;
@@ -90,11 +77,7 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
       UIImplementation uiImplementation) {
     super(reactContext);
     mEventDispatcher = new EventDispatcher(reactContext);
-
-    DisplayMetrics displayMetrics = getDisplayMetrics();
-
-    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
-    mModuleConstants = createConstants(displayMetrics, viewManagerList);
+    mModuleConstants = createConstants(viewManagerList);
     mUIImplementation = uiImplementation;
 
     reactContext.addLifecycleEventListener(this);
@@ -131,14 +114,10 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
     mEventDispatcher.onCatalystInstanceDestroyed();
   }
 
-  private static Map<String, Object> createConstants(
-      DisplayMetrics displayMetrics,
-      List<ViewManager> viewManagerList) {
+  private static Map<String, Object> createConstants(List<ViewManager> viewManagerList) {
     Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CreateUIManagerConstants");
     try {
-      return UIManagerModuleConstantsHelper.createConstants(
-          displayMetrics,
-          viewManagerList);
+      return UIManagerModuleConstantsHelper.createConstants(viewManagerList);
     } finally {
       Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
     }
@@ -460,40 +439,4 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
   public void sendAccessibilityEvent(int tag, int eventType) {
     mUIImplementation.sendAccessibilityEvent(tag, eventType);
   }
-
-  private DisplayMetrics getDisplayMetrics() {
-    Context context = getReactApplicationContext();
-
-    DisplayMetrics displayMetrics = new DisplayMetrics();
-    displayMetrics.setTo(context.getResources().getDisplayMetrics());
-    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
-    Display display = wm.getDefaultDisplay();
-
-    // Get the real display metrics if we are using API level 17 or higher.
-    // The real metrics include system decor elements (e.g. soft menu bar).
-    //
-    // See: http://developer.android.com/reference/android/view/Display.html#getRealMetrics(android.util.DisplayMetrics)
-    if (Build.VERSION.SDK_INT >= 17){
-      display.getRealMetrics(displayMetrics);
-
-    } else {
-      // For 14 <= API level <= 16, we need to invoke getRawHeight and getRawWidth to get the real dimensions.
-      // Since react-native only supports API level 16+ we don't have to worry about other cases.
-      //
-      // Reflection exceptions are rethrown at runtime.
-      //
-      // See: http://stackoverflow.com/questions/14341041/how-to-get-real-screen-height-and-width/23861333#23861333
-      try {
-        Method mGetRawH = Display.class.getMethod("getRawHeight");
-        Method mGetRawW = Display.class.getMethod("getRawWidth");
-        displayMetrics.widthPixels = (Integer) mGetRawW.invoke(display);
-        displayMetrics.heightPixels = (Integer) mGetRawH.invoke(display);
-      } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
-        throw new RuntimeException("Error getting real dimensions for API level < 17", e);
-      }
-    }
-
-    return displayMetrics;
-  }
-
 }

ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java

@@ -12,7 +12,6 @@ package com.facebook.react.uimanager;
 import java.util.HashMap;
 import java.util.Map;
 
-import android.text.InputType;
 import android.util.DisplayMetrics;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.ImageView;
@@ -80,7 +79,7 @@ import com.facebook.react.uimanager.events.TouchEventType;
         .build();
   }
 
-  public static Map<String, Object> getConstants(DisplayMetrics displayMetrics) {
+  public static Map<String, Object> getConstants() {
     HashMap<String, Object> constants = new HashMap<String, Object>();
     constants.put(
         "UIView",
@@ -92,6 +91,7 @@ import com.facebook.react.uimanager.events.TouchEventType;
                 "ScaleAspectFill",
                 ImageView.ScaleType.CENTER_CROP.ordinal())));
 
+    DisplayMetrics displayMetrics = DisplayMetricsHolder.getDisplayMetrics();
     constants.put(
         "Dimensions",
         MapBuilder.of(

ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java

@@ -9,12 +9,9 @@
 
 package com.facebook.react.uimanager;
 
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import android.util.DisplayMetrics;
-
 import com.facebook.react.common.MapBuilder;
 
 /**
@@ -39,10 +36,8 @@ import com.facebook.react.common.MapBuilder;
    * {@link UIManagerModuleConstants}.
    * TODO(6845124): Create a test for this
    */
-  /* package */ static Map<String, Object> createConstants(
-      DisplayMetrics displayMetrics,
-      List<ViewManager> viewManagers) {
-    Map<String, Object> constants = UIManagerModuleConstants.getConstants(displayMetrics);
+  /* package */ static Map<String, Object> createConstants(List<ViewManager> viewManagers) {
+    Map<String, Object> constants = UIManagerModuleConstants.getConstants();
     Map bubblingEventTypesConstants = UIManagerModuleConstants.getBubblingEventTypeConstants();
     Map directEventTypesConstants = UIManagerModuleConstants.getDirectEventTypeConstants();
 

ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java

@@ -29,18 +29,17 @@ import android.view.inputmethod.EditorInfo;
 import android.widget.TextView;
 
 import com.facebook.infer.annotation.Assertions;
-import com.facebook.react.bridge.JSApplicationCausedNativeException;
 import com.facebook.react.bridge.JSApplicationIllegalArgumentException;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.uimanager.BaseViewManager;
 import com.facebook.react.uimanager.PixelUtil;
-import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewDefaults;
 import com.facebook.react.uimanager.ViewProps;
+import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.events.EventDispatcher;
 import com.facebook.react.views.text.DefaultStyleValuesUtil;
 import com.facebook.react.views.text.ReactTextUpdate;

ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropConstantsTest.java

@@ -13,6 +13,7 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
+import android.util.DisplayMetrics;
 import android.view.View;
 
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -145,6 +146,8 @@ public class ReactPropConstantsTest {
   public void testNativePropsIncludeCorrectTypes() {
     List<ViewManager> viewManagers = Arrays.<ViewManager>asList(new ViewManagerUnderTest());
     ReactApplicationContext reactContext = new ReactApplicationContext(RuntimeEnvironment.application);
+    DisplayMetrics displayMetrics = reactContext.getResources().getDisplayMetrics();
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
     UIManagerModule uiManagerModule = new UIManagerModule(
         reactContext,
         viewManagers,

ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleConstantsTest.java

@@ -13,6 +13,8 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
+import android.util.DisplayMetrics;
+
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.common.MapBuilder;
 
@@ -56,6 +58,9 @@ public class UIManagerModuleConstantsTest {
   public void setUp() {
     mReactContext = new ReactApplicationContext(RuntimeEnvironment.application);
     mUIImplementation = mock(UIImplementation.class);
+
+    DisplayMetrics displayMetrics = mReactContext.getResources().getDisplayMetrics();
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
   }
 
   @Test

ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleTest.java

@@ -14,6 +14,7 @@ import java.util.Arrays;
 import java.util.List;
 
 import android.graphics.Color;
+import android.util.DisplayMetrics;
 import android.view.Choreographer;
 import android.view.View;
 import android.view.ViewGroup;
@@ -107,9 +108,13 @@ public class UIManagerModuleTest {
     mReactContext = new ReactApplicationContext(RuntimeEnvironment.application);
     mReactContext.initializeWithInstance(mCatalystInstanceMock);
 
+    DisplayMetrics displayMetrics = mReactContext.getResources().getDisplayMetrics();
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
+
     UIManagerModule uiManagerModuleMock = mock(UIManagerModule.class);
     when(mCatalystInstanceMock.getNativeModule(UIManagerModule.class))
         .thenReturn(uiManagerModuleMock);
+
   }
 
   @Test

ReactAndroid/src/test/java/com/facebook/react/views/text/ReactTextTest.java

@@ -21,6 +21,7 @@ import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.text.Spanned;
 import android.text.TextUtils;
+import android.util.DisplayMetrics;
 import android.text.style.AbsoluteSizeSpan;
 import android.view.Choreographer;
 import android.widget.TextView;
@@ -31,6 +32,7 @@ import com.facebook.react.bridge.ReactTestHelper;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.SimpleArray;
 import com.facebook.react.bridge.SimpleMap;
+import com.facebook.react.uimanager.DisplayMetricsHolder;
 import com.facebook.react.uimanager.ReactChoreographer;
 import com.facebook.react.uimanager.UIImplementation;
 import com.facebook.react.uimanager.UIManagerModule;
@@ -371,6 +373,8 @@ public class ReactTextTest {
 
   public UIManagerModule getUIManagerModule() {
     ReactApplicationContext reactContext = ReactTestHelper.createCatalystContextForTest();
+    DisplayMetrics displayMetrics = reactContext.getResources().getDisplayMetrics();
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
     List<ViewManager> viewManagers = Arrays.asList(
         new ViewManager[] {
             new ReactTextViewManager(),

ReactAndroid/src/test/java/com/facebook/react/views/textinput/TextInputTest.java

@@ -13,6 +13,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import android.util.DisplayMetrics;
 import android.view.Choreographer;
 import android.widget.EditText;
 
@@ -22,6 +23,7 @@ import com.facebook.react.bridge.ReactTestHelper;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.SimpleArray;
 import com.facebook.react.bridge.SimpleMap;
+import com.facebook.react.uimanager.DisplayMetricsHolder;
 import com.facebook.react.uimanager.ReactChoreographer;
 import com.facebook.react.uimanager.UIImplementation;
 import com.facebook.react.uimanager.UIManagerModule;
@@ -181,6 +183,8 @@ public class TextInputTest {
         new ViewManager[] {
             new ReactTextInputManager(),
         });
+    DisplayMetrics displayMetrics = reactContext.getResources().getDisplayMetrics();
+    DisplayMetricsHolder.setDisplayMetrics(displayMetrics);
     UIManagerModule uiManagerModule = new UIManagerModule(
         reactContext,
         viewManagers,