Sample code for using camera digital zoom in Android-app?

Question

需要设置缩放以进行相机预览...

Answer 1

The ZXing app does zooming. Check around line 340

http://www.google.co.uk/codesearch/p?hl=en#z3Vnz2tRCuY/trunk/qrcode-scanner-live/android/src/com/google/zxing/client/android/CameraManager.java&android.hardware.camera%20lang:java&l=338

Answer 2

I'm pretty sure the zxing code wont work on the Samsung Galaxy. The Camera.getParams() it returns do not contain any "zoom-supported" item.

Nor are there any "max-zoom" or "taking-picture-zoom-max" params on my Samsung Epic (a Galaxy S family model).

There is a "digi-zoom" but I dont find any info on it's usage.

Answer 3

(I'm the developer.) I agree with both answers above. Before Android 2.2 there is no "real" zoom API and some devices don't have an unofficial API that I can guess. You can try a Froyo build I'm working on that does use the real zoom API to see if it works. If it does I can share the code privately.