Android的不能让一个TextView的动画到其他的TextView的位置 [英] Android Cant get One TextView to animate to the position of another TextView

问题描述

这是它的外观好了，这应该是当它涉及到动画最容易做的事情。我必须做到以下几点：
我有地方2 TextViews和屏幕的任意位置。 （有关例如第一TextView的是在左上角（0,0））和其他的TextView是右下（width_of_screen，height_of_screen）

Ok by the looks of it, this should be the easiest thing to do when it comes to animations. I have to do the following: I have place 2 TextViews and Random position of the screen. (For eg the first TextView is at top-left (0,0)) and the other TextView is at bottom right(width_of_screen, height_of_screen).

现在，当我点击底部的TextView我希望它向动画左上角的TextView的位置。我的code是以下内容：

Now when I click on the bottom textView I want it to animate to the position of the top left textview. My Code is the following:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    txtOne = (TextView)findViewById(R.id.textone);
    txtTwo = (TextView)findViewById(R.id.text_two);
    relative = (RelativeLayout)findViewById(R.id.relative);


    txtTwo.setOnClickListener(new View.OnClickListener() {

        @SuppressLint("NewApi")
        @Override
        public void onClick(View v) {



            float to_x = txtOne.getX();
            float to_y = txtOne.getY();


            float x_from = txtTwo.getX();
            float y_from = txtTwo.getY();
            //txtTwo.getLocationInWindow(fromLoc);   
            txtOne.getLocationOnScreen(toLoc);
            Animations anim = new Animations();

            Animation a = anim.fromAtoB(x_from, y_from, -to_x, -to_y, animL,1000);
            txtTwo.startAnimation(a);

        }
    });
}



public class Animations {
    public Animation fromAtoB(float fromX, float fromY, float toX, float toY, AnimationListener l, int speed){


        Animation fromAtoB = new TranslateAnimation(

                fromX, 

                toX, 

                fromY, 

                toY
                );

        fromAtoB.setDuration(speed);
        //fromAtoB.setInterpolator(new );


        if(l != null)
            fromAtoB.setAnimationListener(l);               
        return fromAtoB;
    }
}



AnimationListener animL = new AnimationListener() {

    @Override
    public void onAnimationStart(Animation animation) {     
    }

    @Override
    public void onAnimationRepeat(Animation animation) {        
    }

    @Override
    public void onAnimationEnd(Animation animation) {
        //this is just a method to delete the ImageView and hide the animation Layout until we need it again.
        //clearAnimation();       
    }
};

该动画是怪异。底部的TextView从未动画顶端之一。我真的可以使用一些帮助在这。谢谢。

The animations are weird. The bottom textView never animates to the top one. I really could use some help in this. Thanks.

推荐答案

好吧，我发现在我的code中的错误。如果有人有问题，那么使用这个：

Ok I found the error in my code. If anyone is having problems then use this :

Animation a = anim.fromAtoB(0, 0, to_x-x_from, to_y - y_from, animL,1000);

而不是

 Animation a = anim.fromAtoB(x_from, y_from, -to_x, -to_y, animL,1000);

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