AppCompatButton backgroundTint API < 21

I want to use ripple effects on Buttons. AppCompat v22.1 added AppCompatButton and new functionalities to AppCompat tinting.

My Layout:

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  • <android.support.v7.widget.AppCompatButton
            android:id="@+id/add_remove_button"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:backgroundTint="@color/primary"
            android:textColor="@android:color/white"
            android:text="Remove" />
    

    On my API 22 test device the ripple effect works perfectly, but i’m coding for API 11 and unfortunately backgroundTint needs API >= 21. How can i set the ripple effect to Buttons on older API versions?

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  • 2 Solutions collect form web for “AppCompatButton backgroundTint API < 21”

    Just use app:backgroundTint instead of android:backgroundTint, the tint will take effect below Lollipop. The reason is AppCompatActivity AppCompatDelegateImplV7 use AppCompatViewInflater to auto change Button or TextView to AppCompatButton or AppCompatTextView, then app:backgroundTint take effect.

    enter image description here

    In my project I used it, it worked.

    Ripples are not available as a build in functionality on Android <21. This is due to performance issues: devices with the new API can use the RenderThread which is not available to older devices.
    See also: http://android-developers.blogspot.de/2014/10/appcompat-v21-material-design-for-pre.html

    Why are there no ripples on pre-Lollipop?
    A lot of what allows RippleDrawable to run smoothly is Android 5.0’s new RenderThread. To optimize for performance on previous versions of Android, we’ve left RippleDrawable out for now.

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