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Code Issues Projects Releases Wiki Activity

Use nanoTime instead of currentTimeMillis for events 

Summary:
Public
We wanted to do this before, but couldn't because touch events had timestamps
set by the system (and matched System.currentTimeMillis), but now we set those
timestamps! The idea behind this change is that System.currentTimeMillis is
unreliable, but nanoTime isn't, and it also guarantees that we will never have two events with the same
timestamp.
We're still seeing crashes with touch events not ending correctly in JS, this
might be the cause of that.

Reviewed By: foghina

Differential Revision: D2953917
This commit is contained in:
Andrei Coman 2016-02-22 03:25:58 -08:00 committed by Ahmed El-Helw
parent 3e30b70e29
commit addd233d31
1 changed files with 6 additions and 6 deletions
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10
ReactAndroid/src/main/java/com/facebook/react/flat/FlatViewGroup.java
View File

@ -9,16 +9,15 @@
package com.facebook.react.flat;
import javax.annotation.Nullable;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import javax.annotation.Nullable;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.SystemClock;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
@ -26,8 +25,9 @@ import android.view.ViewParent;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.SoftAssertions;
import com.facebook.react.touch.ReactInterceptingViewGroup;
import com.facebook.react.common.SystemClock;
import com.facebook.react.touch.OnInterceptTouchEventListener;
import com.facebook.react.touch.ReactInterceptingViewGroup;
import com.facebook.react.uimanager.PointerEvents;
import com.facebook.react.uimanager.ReactCompoundView;
import com.facebook.react.uimanager.ReactPointerEventsView;
@ -68,7 +68,7 @@ import com.facebook.react.views.image.ImageLoadEvent;
ReactContext reactContext = ((ReactContext) view.getContext());
UIManagerModule uiManagerModule = reactContext.getNativeModule(UIManagerModule.class);
uiManagerModule.getEventDispatcher().dispatchEvent(
new ImageLoadEvent(reactTag, SystemClock.uptimeMillis(), imageLoadEvent));
new ImageLoadEvent(reactTag, SystemClock.nanoTime(), imageLoadEvent));
}
}