How does TranslateAnimation work on Android?

Question

I went through

TranslateAnimation (float fromXDelta, float toXDelta, float fromYDelta, float toYDelta)

but am still confused about how T

Answer 1

AFAIK,there would be relative connection between this.

That is,if you want to translate a hidden textview from right of screen to left of screen,on click of a button,you actually need to translate it from 100% of X-direction(right side of screen) to 0% of X-direction(left side of screen).

At this point,you don't need to change Y-direction at all.so that would be 0% for both the options.So finally,you will have:

fromXDelta 100%

toXDelta 0%

fromYDelta 0%

toYDelta 0%

you can restrict view of the component by setting this percentages between 0 to 100,as per your requirement.

Similarly,if you need to translate your component on Y-direction as well,then you need to change 0% to some other value.

Hope,its clear to you now.

EDIT :

for your requirement,you need to override onclick of button-1,and there you can control button-2's visibility as well as translation.

create animation file in anim folder in your res.

translate_button.xml:

now,in your activity file,

...

// ll  is linear layout containing button_2
//counter is used to manage visibility of button_2 on click of button_1,i.e.1st click-button_2 would be visible,on 2nd click on button_1,it would be invisible.

//you can change behavior as per your need

button_2.setVisibility(View.GONE);
button_1.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View arg0) {

        if(counter<1)
        {
            counter++;                  
            button_2.setVisibility(View.VISIBLE);
            Animation anim=AnimationUtils.loadAnimation(context, R.anim.translate_button);
            button_2.startAnimation(anim);
        }
        else
        {
            counter=0;
            button_2.setVisibility(View.GONE);
        }
    }
});
ll.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View arg0) {

        if(counter==1)
        {
            counter=0;
            button_2.setVisibility(View.GONE);
        }
    }
});

...