在程序运行时，点击button旋转图片

来源：互联网发布：佳能mp236清零软件编辑：程序博客网时间：2024/06/12 23:21

方法一：

@Override    public boolean onKeyDown(int keyCode, KeyEvent event){                // TODO Auto-generated method stub        if(keyCode==KeyEvent.KEYCODE_ALT_LEFT)        imageView = (ImageView) findViewById(R.id.imageView1);        RotateAnimation rotateAnimation = new RotateAnimation(0, 10,Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF,0.5f);        rotateAnimation.setFillAfter(true);        imageView.startAnimation(rotateAnimation);        return super.onKeyDown(keyCode, event);    }

方法二：

public class ExampleApp extends Activity{private ImageView img;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);img=(ImageView)findViewById(R.id.ImageView01);Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.refresh);// Getting width & height of the given image.int w = bmp.getWidth();int h = bmp.getHeight();// Setting post rotate to 90Matrix mtx = new Matrix();mtx.postRotate(90);// Rotating BitmapBitmap rotatedBMP = Bitmap.createBitmap(bmp, 0, 0, w, h, mtx, true);BitmapDrawable bmd = new BitmapDrawable(rotatedBMP);img.setImageDrawable(bmd);}}