What is LinearLayoutCompat in appCompat v7?

android android-compatibility
ol_v_er picture ol_v_er · Oct 22, 2014 · Viewed 11k times · Source

In the support library appCompat v7 of the Android platform, there is a android.support.v7.widget.LinearLayoutCompat class.

Does someone know why this class exist? The original LinearLayout class exist since API level 1 so I don't understand why there is a compat version.

Answer

tato.rodrigo picture tato.rodrigo · Oct 22, 2014

The class LinearLayout exists since API level 1, but some APIs were added after that, for example, setShowDividers introduced on API level 11.

So in this case setShowDividers (and it's parameters) should be invoked using LinearLayoutCompat instead LinearLayout if you are targeting a platform with API level below 11.

Related questions

Difference between android-support-v7-appcompat and android-support-v4

I wanted to know the difference between android-support-v4.jar and android-support-v7-appcompat.jar. If I want to add appcompat Action Bar in my application do I need to add both android-support-v7-appcompat.jar and android-support-v4.jar or only android-support-v7-appcompat.…

Read More
Using android vector Drawables on pre Lollipop crash

I'm using vector drawables in android prior to Lollipop and these are of some of my libraries and tool versions: Android Studio : 2.0 Android Gradle Plugin : 2.0.0 Build Tools : 23.0.2 Android Support Library : 23.3.0 I added this property in my app level Build.Gradle …

Read More
How to determine fragment restored from backstack

Been searching for this issue for a while to no avail now: How to determine fragment is being restored from backstack? I'm using the compatibility library and a ListFragment inside a FragmentActivity. When an item inside ListFragment is selected, a …

Read More