在一个ListView捏缩放 [英] Pinch-zoom on a ListView

问题描述

我有一个ListView，其中包含了一些的TextView的安排使用自定义的适配器。

I have a ListView which contains a few TextView's arranged using a custom adapter.

我想这样做，就是实现双指缩放这个ListView中，这样当用户捏，就可以增加或减少文字的大小。

What I would like to do, is implement pinch-to-zoom on this ListView, so that when the user pinches, they can increase or decrease the size of the text.

有谁知道在做一些类似的例子？我试着按照code在这里：双指缩放自定义视图，但我结束了一个ListView任何触摸事件，除了捏姿态，不会回应。

Does anyone know of examples of doing something similar to this? I tried following the code here: Pinch zoom for custom view, but I ended up with a ListView that would not respond to any touch events except the pinch gesture.

我希望这是可能的，而无需编写一个扩展的ListView一个新的类。

I'm hoping this is possible without writing a new class that extends ListView.

推荐答案

您应该能够跟随的捏缩放自定义视图然后做这样的事情。这将允许你听一个大型活动，以及在列表视图的所有其他触摸事件。

You should be able to follow the Pinch zoom for custom view and then do something like this when overriding the onTouchEvent. This will allow you to listen for a scale event, as well as all other touch events in the listview.

@Override
public boolean onTouchEvent(MotionEvent ev) {
    // Let the ScaleGestureDetector inspect all events.
    mScaleDetector.onTouchEvent(ev);
    return super.onTouchEvent(ev);
}    

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