Hi guys!
I also was a problem on my Hero.
But I found a solution.
05-28 21:58:58.058: ERROR/QualcommCameraHardware(37): Invalid camera
state QCS_IDLE: expecting QCS_PREVIEW_IN_PROGRESS, cannot start
autofocus!
05-28 21:58:58.059: DEBUG/CAM OPEN(2710): java.io.IOException:
autoFocus failed
>From state machine follows the solution:
1.) Start the Preview.
2.) After set the autoFocus.
Example:
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int
width, int height) {
if(started) cam.stopPreview();
Camera.Parameters params = cam.getParameters();
params.setPictureSize(width, height);
params.setPreviewSize(width, height);
cam.setParameters(params);
cam.startPreview();
cam.autoFocus(this);
started = true;
}
@Override
public void onAutoFocus(boolean success, Camera camera) {
/* .... */
}
I hope someone helps.
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