Change View height programmatically Smoothly

Question

I am trying to change the height of the view programmatically.
What i have tried is -

RelativeLayout rlOne;
rlOne = (RelativeLayout) findViewById(R.id.rlOne);

And on some click event i am changing the height using the LayoutParams.

rlOne.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, NEWHEIGHT));

The height is increased but the transition is not smooth.
How can i achieve a smooth transition from view's original height to view's new height?
Can i slow down the transition ?

@MocialovBoris : Can u give me some more inputs on this. Shall i use the scale animation? — Anukool, Aug 07 '13 at 07:32

score 2 · Answer 1 · answered Aug 07 '13 at 07:24

Basically the idea is that, you calculate the new height (the height after your view increasing) view first and write an thread, increase the height of you old view (the height of your view before increasing) pixel by pixel(may be 5-10 pixels at a time) until it reaches the new height. Hope the idea could help.

score 1 · Accepted Answer · edited May 23 '17 at 12:06

1

Play with from/to/speed values

ScaleAnimation scaleAnimation = new ScaleAnimation(from, to, from, to, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
rlOne.setAnimation(scaleAnimation);

Source:

https://stackoverflow.com/a/1624689/1276374

edited May 23 '17 at 12:06

Community

1
1

answered Aug 07 '13 at 07:43

Boris Mocialov

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is there any thing except scale because if i scale the textView from one side, it does not look decreasing width, it look like comprising – Furqan Jul 31 '17 at 16:31

score 0 · Answer 3 · answered Aug 07 '13 at 07:22

0

You could write a for loop, where the view's height is increased by very little, than a pause is made before increasing the counter. In this way, the user will have the impression of a smooth transition.

answered Aug 07 '13 at 07:22

Radu

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score -2 · Answer 4 · answered Aug 07 '13 at 07:50

-2

Use

LinearLayout linearLayout = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
                            LayoutParams.WRAP_CONTENT);

answered Aug 07 '13 at 07:50

Master

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Doesn't compile, you're assigning a reference to an Object of type `LinearLayout.LayoutParams` to a variable of type `LinearLayout`. – urgentx May 23 '18 at 22:15

Change View height programmatically Smoothly

4 Answers4