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Add measureInWindow on Android

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Summary:public
This adds the capability to get a View in absolute position on the screen, not just relative to the RootView.  This is the Android implementation

Reviewed By: andreicoman11

Differential Revision: D2939170

fb-gh-sync-id: 658f1ebe6a458088f657a7469389add1a12222cd
shipit-source-id: 658f1ebe6a458088f657a7469389add1a12222cd
This commit is contained in:
Dave Miller
2016-02-17 08:30:24 -08:00
committed by facebook-github-bot-4
parent f9e81d9bcc
commit b26f699c9a
4 changed files with 83 additions and 2 deletions
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22
ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java
View File

@@ -482,6 +482,28 @@ public class NativeViewHierarchyManager {
outputBuffer[3] = v.getHeight();
}
/**
* Returns the coordinates of a view relative to the entire phone screen (not just the RootView
* which is what measure will return)
*
* @param tag - the tag for the view
* @param outputBuffer - output buffer that contains [x,y,width,height] of the view in coordinates
* relative to the device window
*/
public void measureInWindow(int tag, int[] outputBuffer) {
UiThreadUtil.assertOnUiThread();
View v = mTagsToViews.get(tag);
if (v == null) {
throw new NoSuchNativeViewException("No native view for " + tag + " currently exists");
}
v.getLocationOnScreen(outputBuffer);
// outputBuffer[0,1] already contain what we want
outputBuffer[2] = v.getWidth();
outputBuffer[3] = v.getHeight();
}
public int findTargetTagForTouch(int reactTag, float touchX, float touchY) {
View view = mTagsToViews.get(reactTag);
if (view == null) {