最近做了一个项目中，其中遇到这样的需求要求图片移动到手指触碰的地方。具体实现代码如下所示：
package com.example.plane; import Android.app.Activity; import android.os.Bundle; import android.util.DisplayMetrics; import android.view.Display; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.View.OnKeyListener; import android.view.View.OnTouchListener; import android.view.Window; import android.view.WindowManager; public class MainActivity extends Activity { private int speed = 10; private MyPlane plane; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); plane = new MyPlane(this); setContentView(plane); // plane.setBackgroundResource(R.drawable.ic_launcher); WindowManager manager = getWindowManager(); Display display = manager.getDefaultDisplay(); DisplayMetrics metrics = new DisplayMetrics(); display.getMetrics(metrics); plane.currentX = metrics.widthPixels / 2; plane.currentY = metrics.heightPixels / 2; } @Override public boolean onTouchEvent(MotionEvent event) { /*float x = 0; float y = 0; switch (event.getAction()) { case MotionEvent.ACTION_DOWN: x = event.getX(); y = event.getY(); break; case MotionEvent.ACTION_MOVE: x = event.getX(); y = event.getY(); break; case MotionEvent.ACTION_UP: x = event.getX(); y = event.getY(); break; }*/ plane.currentX=event.getX(); plane.currentY=event.getY(); plane.invalidate(); return super.onTouchEvent(event); } } package com.example.plane; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.view.View; public class MyPlane extends View { Bitmap plane; public float currentX; public float currentY; public MyPlane(Context context) { super(context); plane = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_launcher); setFocusable(true); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); Paint p = new Paint(); canvas.drawBitmap(plane, currentX, currentY, p); } }
以上所述是小编给大家介绍的Android中View跟随手指移动效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！