如何放大一个动态的布局？ [英] How to zoom a dynamic layout?

问题描述

有一个的LinearLayout，并希望addView（LinearLayout中）的结尾，现在我想放大的布局，我应该怎么办？
我已搜查这个类似的问题，并得到了一个解决方案，它提供了一个罐子，但它之前，我吸取了我添加了布局的东西只能放大的布局，它有一个问题是，它每一次显示了两个观点，一是是一部开拓创新的观点，一种是可以放大，就像我说的，这是链接，我该如何解决？谢谢

There is a linearlayout ,and want to "addView(linearlayout)" at the end,now I want zoom the layout, how I should do ? I have searched this similar question ,and got a solution ,it provided a jar,but it only can zoom the layout before I draw something on the layout that I added, and it has a problem is that it show two view every time,one is the orignal view,one is can be zoomed just as I said, this is the link,How I can fix ? Thanks

在这里输入链接的描述

推荐答案

尝试上的布局进行大规模的动画？

Try performing a scale animation on the layout?

通过创建以下实例变量启动：

Start by creating the following instance variables:

private float mScale = 1f;
private ScaleGestureDetector mScaleDetector;

你的启动规模的手势检测，利用ScaleAnimation：

Initiate your scale gesture detector, utilizing ScaleAnimation:

mScaleDetector = new ScaleGestureDetector(this, new ScaleGestureDetector.SimpleOnScaleGestureListener() 
{                                   
    @Override
    public boolean onScale(ScaleGestureDetector detector) 
    {
        float scale = 1 - detector.getScaleFactor();

        float prevScale = mScale;
        mScale += scale;

        if (mScale < 0.1f) // Minimum scale condition:
            mScale = 0.1f;

        if (mScale > 10f) // Maximum scale condition:
            mScale = 10f;

        ScaleAnimation scaleAnimation = new ScaleAnimation(1f / prevScale, 1f / mScale, 1f / prevScale, 1f / mScale, detector.getFocusX(), detector.getFocusY());
        scaleAnimation.setDuration(0);
        scaleAnimation.setFillAfter(true);
        myContainer.startAnimation(scaleAnimation);

        return true;
    }
});

最后，覆盖您onTouch方法您的活动里面线它到你的规模探测器：

Finally, override your onTouch method inside your activity to wire it up to your scale detector:

@Override
public boolean onTouchEvent(MotionEvent event) 
{
    mScaleDetector.onTouchEvent(event);
    return super.onTouchEvent(event);
}

您可能会需要调整它多一点得到你想要的精确解，但这应该帮助你开始：）

You'll probably need to tweak it a bit more to get the exact solution you want, but this should help get you started :)

希望这有助于：）

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