android-view Archives

I’m writing a few custom views which share some same-named attributes. In their respective <declare-styleable> section in attrs.xml I’d like to use the ...

May 28, 2022
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android, Programming

IT Nursery

Usage of forceLayout(), requestLayout() and invalidate()

I’m a bit confused about the roles of forceLayout(), requestLayout() and invalidate() methods of the View class. When shall they be called? 6 ...

May 28, 2022
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How to lay out Views in RelativeLayout programmatically?

I’m trying to achieve the following programmatically (rather than declaratively via XML): <RelativeLayout...> <TextView ... android:id="@+id/label1" /> <TextView ... android:id="@+id/label2" android:layout_below: "@id/label1" /> ...

May 24, 2022
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What does the LayoutInflater attachToRoot parameter mean?

The LayoutInflater.inflate documentation isn’t exactly clear to me about the purpose of the attachToRoot parameter. attachToRoot: whether the inflated hierarchy should be attached ...

May 22, 2022
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Coloring Buttons in Android with Material Design and AppCompat

Before the AppCompat update came out today I was able to change the color of buttons in Android L but not on older ...

May 21, 2022
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findViewByID returns null

First of all: yes, I read all the other threads on this topic. And not only those from this site… (you see, I’m ...

May 19, 2022
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Is there an addHeaderView equivalent for RecyclerView?

I’m looking for an equivalent to addHeaderView for a recycler view. Basically I want to have an image with 2 buttons be added ...

May 15, 2022
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Android: View.setID(int id) programmatically – how to avoid ID conflicts?

I’m adding TextViews programmatically in a for-loop and add them to an ArrayList. How do I use TextView.setId(int id)? What Integer ID do ...

May 10, 2022
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