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如果按下起源于该视图之外，如何检测是否正在触摸该视图？

[英]How to detect if a view is being touched if the press down originates outside of that view?

原文 2022-09-30 16:00:20 0 1 java/ android

I want to touch down on the view of object B and swipe to ie.我想触及 object B 的视图并滑动到 ie。 object 3 where I release it. object 3 我发布的地方。 It needs to register that is has been released at object 3. I thought to give object 3 a OnTouchListener as well but that ontouchlistener is not called since it started outside of its view.它需要注册已在 object 3 发布的。我想给 object 3 一个 OnTouchListener，但没有调用 ontouchlistener，因为它在其视图之外启动。 I dont think a global ontouchlistener working back to coordinates will work since its all in a ScrollView.我认为返回坐标的全局 ontouchlistener 不会起作用，因为它全部在 ScrollView 中。 I tried several callback but none seem to work and I can't find an answer to this.我尝试了几个回调，但似乎都没有用，我找不到答案。 So, How to detect if a view is being touched if the press down originates outside of that view?那么，如果按下来自该视图之外，如何检测是否正在触摸该视图？

1 个解决方案

As @cactustictacs suggested the Drag and Drop works great for this.正如@cactustictacs 所建议的那样，拖放非常适合此操作。 Basically:基本上：

Set a onTouchListener on objects B view that starts a drag action.在启动拖动操作的对象 B 视图上设置 onTouchListener。
Extend DragShadowBuilder and create a custom background/shadow for the dragged object. (Transparent drawable for me)扩展 DragShadowBuilder 并为拖动的 object 创建自定义背景/阴影。（对我来说是透明可绘制对象）
Add data of object B to the drag action拖拽动作添加object B的数据
Set Object 1 2 3 views as drop zones by implementing onDragListeners.通过实现 onDragListeners 将 Object 1 2 3 视图设置为拖放区。