Android ZoomControls的使用

我們通常在手機上特別是在訪問浏覽器的使用後，經常會看到一些玩野會放大縮小，其實很簡單。

------------------------ZoomControls的使用。

public class ZoomControllerActivity extends Activity{
	private TextView myTextView;
	private ZoomControls myZoomController;
	private int size = 25;;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.zooncontroller_layout);
		myTextView = (TextView) findViewById(R.id.myTextView);
		myZoomController = (ZoomControls) findViewById(R.id.myZoomController);;
		myZoomController.setOnZoomInClickListener(new OnZoomInTroller());
		myZoomController.setOnZoomOutClickListener(new OnZoomOutTroller());
	}
	/**
	 * 縮小監聽器
	 * @author androidstartjack
	 *
	 */

	private class OnZoomInTroller implements OnClickListener{

		@Override
		public void onClick(View v) {
			Toast.makeText(getApplicationContext(), "aaaaaaa", 0).show();
			size = size +2;
			myTextView.setTextSize(size);
		}

	}
	/**
	 * 放大監聽器
	 * @author androidstartjack
	 *
	 */
	private class OnZoomOutTroller implements OnClickListener{
		@Override
		public void onClick(View v) {
			size = size -2;
			Toast.makeText(getApplicationContext(), "bbbbbbbbbbbbbbbb", 0).show();
			myTextView.setTextSize(size);
		}

	}
}