Canvas.scale（）在Android上。重画全屏 [英] Canvas.scale() on Android. Redraw full screen

问题描述

因此，我使用Android开发人员的示例实现缩放我的活动。

So I'm using the example on Android Developers to implement pinch to zoom on my Activity.

Im缩放一个自定义视图，它有一个ScrollView ）里面。

Im Scaling A Custom View which has a ScrollView(and other things) inside it.

当缩放时，只有实际显示的屏幕被调整大小 - 但我想缩小的东西显示更多的内容，因为他们有更多的空间在缩小时执行此操作。
我想让他们使用所有的全屏空间。

When im scaling, only the actual displayed Screen gets resized - but i want the scaled down things to show more of their content, because they have more space to do so when scaled down. I want them to use all the full screen space.

我的自定义视图ondraw方法看起来像这样：

My Custom Views ondraw method just looks like this:

public void draw(Canvas canvas) {

    canvas.scale(mScaleFactor, mScaleFactor);
    super.draw(canvas);
}

这是现在的样子

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如果有什么不清楚，只要留下评论。任何帮助赞赏
编辑：我使我的自定义查看另一个背景颜色，现在我看到我的视图仍然是全屏只是没有孩子。

If anything is unclear, just leave a comment. Any Help is appreciated edit: i made my custom View another Background color and now i see that my View is still full screen just not the childs.

推荐答案

尝试强制使用 LayoutParams 缩放视图的大小。

Try forcing the size of the view that is being scaled with a LayoutParams.

此主题提供了有关如何做到这一点。

This thread has more detail on how to do this.

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