下面的实现.

final Button capture = (Button)findViewById(R.id.capture_button);
capture.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(cameraIntent,CAMERA_PIC_REQUEST);

    }
});


protected void onActivityResult(int requestCode,int resultCode,Intent data) {  
    if (requestCode == CAMERA_PIC_REQUEST) {  

        Bitmap thumbnail = (Bitmap)data.getExtras().get("data");
        ImageView image = (ImageView)findViewById(R.id.photoResultView);
        image.setImageBitmap(thumbnail);
    }
}