Merge pull request #38 from tomtastico/fix-stretch-with-imagesource

Set stretch mode in updateViewSize

Author: farfromrefug

src/image.android.ts

@@ -378,6 +378,10 @@ export class Img extends ImageBase {
         } else {
             draweeView.setAspectRatio(0);
         }
+
+        if (this.stretch) {
+            draweeView.setScaleType(getScaleTypeAndroid(this.stretch));
+        }
     }
 
     // public initNativeView(): void {
@@ -998,3 +1002,33 @@ function getScaleType(scaleType: ScaleType) {
 
     return null;
 }
+
+function getScaleTypeAndroid(scaleType: ScaleType) {
+    if (isString(scaleType)) {
+        switch (scaleType) {
+            case ScaleType.Center:
+                return android.widget.ImageView.ScaleType.CENTER;
+            case ScaleType.AspectFill:
+            case ScaleType.CenterCrop:
+                return android.widget.ImageView.ScaleType.CENTER_CROP;
+            case ScaleType.CenterInside:
+                return android.widget.ImageView.ScaleType.CENTER_INSIDE;
+            case ScaleType.FitCenter:
+            case ScaleType.AspectFit:
+                return android.widget.ImageView.ScaleType.FIT_CENTER;
+            case ScaleType.FitEnd:
+                return android.widget.ImageView.ScaleType.FIT_END;
+            case ScaleType.FitStart:
+                return android.widget.ImageView.ScaleType.FIT_START;
+            case ScaleType.Fill:
+            case ScaleType.FitXY:
+                return android.widget.ImageView.ScaleType.FIT_XY;
+            case ScaleType.FocusCrop:
+                return android.widget.ImageView.ScaleType.CENTER_CROP;
+            default:
+                break;
+        }
+    }
+
+    return null;
+}