Buttons should be as wide as the biggest

user_747412 0
Viewed 1363

I want all Button to fit the text, so there is no line breaks in the Buttons, but also all the Button should has the same width: as wide as the biggest.

I achieved this with setting all the Button layout_width's to be WRAP_CONTENT in the layout:

<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical" >

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    ...

</LinearLayout>

Then i search for the biggest value, and set all the buttons to be same sized:

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);


    ViewGroup layout = (ViewGroup) findViewById(R.id.layout);
    int size = 0;
    for (int i = 0; i < layout.getChildCount(); ++i) {
        View child = layout.getChildAt(i);
        if (child.getWidth() > size) {
            size = child.getWidth();
        }
    }

    for (int i = 0; i < layout.getChildCount(); ++i) {
        LayoutParams params = layout.getChildAt(i).getLayoutParams();
        params.width = size;
        layout.getChildAt(i).setLayoutParams(params);
    }
}

Is there any cleaner, more elegant solution for this?

android-view android-layout view android
3 Answers

Wrap, all the button inside a common parent Say linearlayout having attributes as wrap_content, wrap_content. use the attributes Match_Parent for your button, now programmatically you just calculate the size of biggest text and set it as parent width, and call layout over it, this will make sure all the child it contains gets resized efficiently.

<LinearLayout  <!--Parent-->
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >
    <!-- Child -->
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>
user_16937250

Using TableLayout and TableRow will let the column (in this case, Button) has fixed width, depends on the largest/longest one. android:shrinkColumns is used in case some of the Buttons are longer than screen width to make the word wraps.

Example:

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:shrinkColumns="0" >
    <TableRow>
        <Button android:text="Short" />
    </TableRow>
    <TableRow>
        <Button android:text="Longer text" />
    </TableRow>
    <TableRow>
        <Button android:text="Middle" />
    </TableRow>
</TableLayout>
user_28219540

Use MatchParent instead of WrapContent like below..

<Button
android:layout_width="match_parent"
android:layout_height="match_parent" />

<Button
android:layout_width="match_parent"
android:layout_height="match_parent" />

Hope this helps!!!

user_13790730
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