如何检测ImageView何时与另一个ImageView发生冲突？ [英] how to detect when a ImageView is in collision with another ImageView?

问题描述

我在屏幕上开发了一些带有一些图像视图的测试游戏。

用手指，我正在移动另一个图像视图。

我想检测手指移动的图像视图何时触及另一个图像视图。

¿这是实现它的最好方法吗？我在google上找不到关于它的信息...

谢谢

解决方案

我会回答一般性问题 - 找出两个视图重叠的时间：

  private boolean viewsOverlap（View v1，View v2）{
 int [] v1_coords = new int [2]; 
 v1.getLocationOnScreen（v1_coords）; 
 int v1_w = v1.getWidth（）; 
 int v1_h = v1.getHeight（）; 
 Rect v1_rect = new Rect（v1_coords [0]，v1_coords [1]，v1_coords [0] + v1_w，v1_coords [1] + v1_h）; 
 
 int [] v2_coords = new int [2]; 
 v2.getLocationOnScreen（v1_coords）; 
 int v2_w = v2.getWidth（）; 
 int v2_h = v2.getHeight（）; 
 Rect v2_rect = new Rect（v2_coords [0]，v2_coords [1]，v2_coords [0] + v2_w，v2_coords [1] + v2_h）; 
 
返回v1_rect.intersect（v2_rect）|| v1_rect.contains（v2_rect）|| v2_rect.contains（v1_rect）; 
} 
  

<这些天我的三角学有点摇晃，所以我不确定这部分：

  OVERLAP == v1_rect.intersect （v2_rect）|| v1_rect.contains（v2_rect）|| v2_rect.contains（v1_rect）; 
  

仔细检查我。祝你好运。

Im developing a test game with some imageviews on the screen.

with the finger, i am moving another imageview.

I want to detect when the imageview moved by the finger has touched another imageview.

¿Wich is the best way to achieve it? I can't find info about it on google...

Thanks

解决方案

I'll answer the general question - find out when two views overlap:

private boolean viewsOverlap(View v1, View v2) {
    int[] v1_coords = new int[2];
    v1.getLocationOnScreen(v1_coords);
    int v1_w = v1.getWidth();
    int v1_h = v1.getHeight();
    Rect v1_rect = new Rect(v1_coords[0], v1_coords[1], v1_coords[0] + v1_w, v1_coords[1] + v1_h);

    int[] v2_coords = new int[2];
    v2.getLocationOnScreen(v1_coords);
    int v2_w = v2.getWidth();
    int v2_h = v2.getHeight();
    Rect v2_rect = new Rect(v2_coords[0], v2_coords[1], v2_coords[0] + v2_w, v2_coords[1] + v2_h);

    return v1_rect.intersect(v2_rect) || v1_rect.contains(v2_rect) || v2_rect.contains(v1_rect);
}

My trigonometry is a little shaky these days so I'm not sure about this part:

OVERLAP ==  v1_rect.intersect(v2_rect) || v1_rect.contains(v2_rect) || v2_rect.contains(v1_rect);

Double check me. Good luck.

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