java - How to set a maximum height with wrap content in android?

Question

In android, how can you create a scroll view that's got a max height, and wrap contents, basically it wraps the content vertically, but has a maximum height?

I tried

<ScrollView 
     android:id="@+id/scrollView1"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
         android:maxHeight="200dp"
     android:layout_alignParentBottom="true" >

    <LinearLayout
        android:id="@+id/maincontainer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

    </LinearLayout>
</ScrollView>

But this isn't working?

Answer 1

you can add this to any view (override onMeasure in a class inherited from a view)

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    if (maxHeight > 0){
        int hSize = MeasureSpec.getSize(heightMeasureSpec);
        int hMode = MeasureSpec.getMode(heightMeasureSpec);

        switch (hMode){
            case MeasureSpec.AT_MOST:
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(Math.min(hSize, maxHeight), MeasureSpec.AT_MOST);
                break;
            case MeasureSpec.UNSPECIFIED:
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST);
                break;
            case MeasureSpec.EXACTLY:
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(Math.min(hSize, maxHeight), MeasureSpec.EXACTLY);
                break;
        }
    }

    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}