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react-native-camera
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Crops Preview on Android

This commit is contained in:
Simon Ermler 2018-04-03 21:34:40 +02:00
parent 6cc3d89bec
commit 0e3e84e35b
1 changed files with 15 additions and 3 deletions
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18
android/src/main/java/org/reactnative/camera/RNCameraView.java
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@ -164,10 +164,22 @@ public class RNCameraView extends CameraView implements LifecycleEventListener,
if (null == preview) { if (null == preview) {
return; return;
} }
float width = right - left;
float height = bottom - top;
float ratio = getAspectRatio().toFloat();
int correctHeight;
int correctWidth;
this.setBackgroundColor(Color.BLACK); this.setBackgroundColor(Color.BLACK);
int width = right - left; if (height / width > ratio) {
int height = bottom - top; correctHeight = (int) (width * ratio);
preview.layout(0, 0, width, height); correctWidth = (int) width;
} else {
correctHeight = (int) height;
correctWidth = (int)(height*ratio);
}
int paddingX = (int) ((width - correctWidth) / 2);
int paddingY = (int) ((height - correctHeight) / 2);
preview.layout(paddingX, paddingY, correctWidth+paddingX, correctHeight+paddingY);
} }
@Override @Override