本文实例讲述了Android实现让图片在屏幕上任意移动的方法。分享给大家供大家参考，具体如下：
public class DragExampleActivity extends Activity { Bitmap mBitmap; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon); setContentView(new DragView(this)); } @Override protected void onDestroy() { super.onDestroy(); if(null != mBitmap) { mBitmap.recycle(); mBitmap = null; } } private class DragView extends View { private int mMotionX = 0; private int mMotionY = 0; private Paint paint; public DragView(Context context) { super(context); paint = new Paint(); } @Override public void draw(Canvas canvas) { super.draw(canvas); canvas.drawBitmap(mBitmap, mMotionX, mMotionY, paint); } @Override public boolean onTouchEvent(MotionEvent ev) { if(ev.getAction() == MotionEvent.ACTION_DOWN) { mMotionX = (int) ev.getX(); mMotionY = (int) ev.getY(); invalidate(); return true; }else { return super.onTouchEvent(ev); } } } }
希望本文所述对大家Android程序设计有所帮助。
【Android实现让图片在屏幕上任意移动的方法(拖拽功能)】相关文章：