Android: Custom view Zoom/Pinch to display zooming indicators

I've implemented Zoom/Pinch using the approach said in android pinch zoom How can I display Zooming indicators for this?? I开发者_如何学JAVA've some how managed to display scale of zoom (scaleFactor * 100). How will I show a zooming indicator? I can display static images using canvas.drawBitmap. But is there a more better way?

Any help is appreciated

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I finally used the built-in ZoomButtonsController