PercentRelativeLayout, how to set the height programmatically

java android android-relativelayout android-percent-library
g.revolution picture g.revolution · Aug 30, 2015 · Viewed 8k times · Source

I am using PercentRelativeLayout from android percent support package. this is what I have in my layout.

<android.support.percent.PercentRelativeLayout
    android:id="@+id/view_parent"
    app:layout_heightPercent="68%" android:visibility="invisible"
    android:layout_width="match_parent"
    android:background="@color/mountain_meadow" android:layout_alignParentTop="true"
    android:layout_height="wrap_content">


    <View android:id="@+id/view_child" android:layout_width="match_parent" app:layout_heightPercent="30%"
        android:layout_alignParentBottom="true"
        />

</android.support.percent.PercentRelativeLayout>

I want to change the height of view_child programmatically. How can I do that using PercentRelativeLayout.LayoutParams or any other way.

Answer

gruszczy picture gruszczy · Aug 31, 2015

Do you want to set a new percentage value? If yes, you need to:

View view = findViewById(R.id.view_child);
PercentRelativeLayout.LayoutParams params = (PercentRelativeLayout.LayoutParams) view.getLayoutParams();
// This will currently return null, if it was not constructed from XML.
PercentLayoutHelper.PercentLayoutInfo info = params.getPercentLayoutInfo();
info.heightPercent = 0.60f;
view.requestLayout();

Related questions

Create a new TextView programmatically then display it below another TextView

String[] textArray={"one","two","asdasasdf asdf dsdaa"}; int length=textArray.length; RelativeLayout layout = new RelativeLayout(this); RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); for(int i=0;i<length;i++){ TextView tv=new TextView(getApplicationContext()); …

Read More
java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams

I've just edited my XML, I've put slide menu code in my XML, but there is an error. <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.…

Read More
How do I set background image with picasso in code

I know picasso loads image into imageview etc but how do I set my layout background image using picasso? My code: public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); …

Read More