如何翻译动漫作品：安卓 [英] How a Translate Animation works: Android

问题描述

我试图移动 RelativeLayout的使用 TranslateAnimation 。 code我已经进行同一写的：

I'm trying to move a RelativeLayout using TranslateAnimation. Code I have written for performing the same is:

translateAnimation = new TranslateAnimation(0, 0, heightOfRootView-excuseContainer.getHeight(), currentYPoint);
translateAnimation.setRepeatMode(0);
translateAnimation.setDuration(500);
translateAnimation.setFillAfter(true);
excuseContainer.startAnimation(translateAnimation);

我试图从特定视图的当前y位置开始动画 （我不需要改变的视图x位置） 但动画盯着从第一Y点每次。我怎么能执行从目前来看y位置这个动作来看所需的位置。

I'm trying to start animation from current y position of particular view (I do not need to change x position of view) But animation is staring every time from its first y point. How can I perform this action from current y position of view to desired position of view.

下面 heightOfRootView 为全屏幕高度， excuseContainer 的是，鉴于这是我想要移动与动画 currentYPoint 是最后一个y的点 excuseContainer 。

Here heightOfRootView stands for height of full screen, excuseContainer is that view which I want to move with animation and currentYPoint is last y point of excuseContainer.

编辑： 我有没有翻译的动画教程可用。我搜索了它，但我din't发现。

I there any Translate animation tutorial available. I searched for it but I din't found..

感谢您的支持。

推荐答案

正在使用 TranslateAnimation 构造函数的第三个参数是增量值，这样的出发点是像计算：

The 3rd parameter of the TranslateAnimation constructor you are using is a delta value, so the starting point is calculated like:

currentYPos + startingDeltaY

既然你似乎是在传递一个是值是指事物在屏幕上的位置，此增量值将是不正确的。

Since you seem to be passing in a Y value that refers to the location of something on the screen, this delta value won't be correct.

请尝试使用此构造：

公共TranslateAnimation（INT fromXType，浮fromXValue，INT toXType，浮toXValue，INT fromYType，浮fromYValue，INT toYType，浮动toYValue）

public TranslateAnimation (int fromXType, float fromXValue, int toXType, float toXValue, int fromYType, float fromYValue, int toYType, float toYValue)

这样的：

new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0, Animation.ABSOLUTE, heightOfRootView-excuseContainer.getHeight(), Animation.ABSOLUTE, currentYPoint);

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