单击按钮时通过代码在android中放大edittext

Question

I want to know if its possible to enlarge a EditText in android from 0 until to fill its parent. I tried several things, but in the moment I have the LinearLayout and the EditText is added by code:

    <LinearLayout
        android:id="@+id/ll_buscarenlace"
        android:layout_width="0dp"
        android:layout_height="fill_parent"
        android:layout_weight="0.8"
        android:gravity="right" >

-

EditText et = (EditText) new EditText(this.act);
LinearLayout ll = (LinearLayout) this.act.findViewById(R.id.ll_buscarenlace);

    et.setWidth(0);
    ll.addView(et);

    for (int i=0; i<=ll.getWidth(); i++){
        et.setWidth(i);
        Thread.sleep(50);

    }

But this is one of many things that I tried to do. Thanks in advance

Answer 1

By "make it go from zero to fill-parent", do you mean that you want it to initially be invisible and then, on a button click, become visible?

If so, you don't need to do any resizing - in the layout file set android:layout_width="fill_parent" and make it invisible with android:visibility="gone" .

Then, in the onClickListener on your button, you can call et.setVisible(Visibility.VISIBLE) .

Answer 2

A possible solution: ScaleAnimation.

EditText editText = (EditText) findViewById(R.id.editText1);

Animation scaleAnimation = new ScaleAnimation(0, 1, 1, 1);
scaleAnimation.setDuration(750);
editText.startAnimation(scaleAnimation);

Not exactly what you're looking for since it scales rather than expands, but it may be of help. The effect is not bad either.