Trouble centering a bitmap on an ImageView

I have an ImageView (image_view) in an xml and I have the layout gravity set to center and the scale set to center_inside....but when I pass my compressed bmp to the image_view, it puts it on the middle-left of the screen (in portrait mode)...any ideas on a workaround?

here is me setting it to the image view:

        ImageView imageView = (ImageView) findViewById(R.id.image_view);

        imageView.setImageBitmap(bitmap565);

I also compress it in an output stream:

        try {
            FileOutputStream fos = new FileOutputStream(filepath);

            bitmap565.compress(CompressFormat.JPEG, 90, fos);

            fos.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

Than开发者_运维知识库ks all!

    <ImageButton android:id="@+id/ImageButton01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/results" android:layout_gravity="top|center"></ImageButton><ImageView
            android:screenOrientation="portrait"
            android:layout_width="fill_parent"
            android:id="@+id/image_view"
            android:layout_gravity="center" android:layout_weight="1.0" android:layout_height="wrap_content" android:scaleType="centerInside"/>

    <Button
            android:screenOrientation="portrait"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal" android:layout_width="fill_parent" android:textStyle="bold" android:id="@+id/detect_face" android:text="Detect"/>

you can solve your problem just using FrameLayout.

Your ImageView's layout_width is set to fill_parent, so layout_gravity won't affect its horizontal position within its parent. Try using gravity instead of layout_gravity, or wrap_content instead of fill_parent.