Add binding adapter for android:background

Bug 24535696

setBackground exists only in API 16+, but android:background
should be available in all versions down to API 1.

Change-Id: I08b847eb36281d15428a3e71d37c44d6fe06599b

1 files changed, 11 insertions, 0 deletions

diff --git a/extensions/baseAdapters/src/main/java/android/databinding/adapters/ViewBindingAdapter.java b/extensions/baseAdapters/src/main/java/android/databinding/adapters/ViewBindingAdapter.java
index 636f80db..aece41be 100644
--- a/extensions/baseAdapters/src/main/java/android/databinding/adapters/ViewBindingAdapter.java
+++ b/extensions/baseAdapters/src/main/java/android/databinding/adapters/ViewBindingAdapter.java
@@ -19,6 +19,7 @@ import android.annotation.TargetApi;
 import android.databinding.BindingAdapter;
 import android.databinding.BindingMethod;
 import android.databinding.BindingMethods;
+import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Build.VERSION;
 import android.os.Build.VERSION_CODES;
@@ -202,6 +203,16 @@ public class ViewBindingAdapter {
         }
     }
 
+    @SuppressWarnings("deprecation")
+    @BindingAdapter("android:background")
+    public static void setBackground(View view, Drawable drawable) {
+        if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) {
+            view.setBackground(drawable);
+        } else {
+            view.setBackgroundDrawable(drawable);
+        }
+    }
+
     // Follows the same conversion mechanism as in TypedValue.complexToDimensionPixelSize as used
     // when setting padding. It rounds off the float value unless the value is < 1.
     // When a value is between 0 and 1, it is set to 1. A value less than 0 is set to -1.