Data Binding with srcCompat

Solution 1:

You can simply use android:src attribute instead compat attribute when you set vector resource by DataBinding.

DataBinding library generates class that execute setImageResource method at runtime.

<ImageView
        ...
        android:src="@{@drawable/your_drawable}"
/>

According to http://android-developers.blogspot.com/2016/02/android-support-library-232.html setImageResource method can be used at runtime on older system versions without any additional changes.

If you would like to use app:srcCompat attribute. You must define @BindingMethods annotation which connects attribute with appropriate setter from ImageView. For example in your Activity or Fragment add.

@BindingMethods({
    @BindingMethod(type = android.widget.ImageView.class,
            attribute = "app:srcCompat",
            method = "setImageDrawable") })
public class MainActivity extends AppCompatActivity {
   // your activity body here

}

Solution 2:

You may have to resort to using a binding adapter with a method signature similar to the following:

@BindingAdapter("app:srcCompat")
public static void bindSrcCompat(ImageView imageView, Drawable drawable){
    // Your setter code goes here, like setDrawable or similar
}

Here is the reference: http://developer.android.com/reference/android/databinding/BindingAdapter.html

Solution 3:

The proposed answers mainly worked for me but I also needed to add this line in my Application:

AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);

Doing so allows me to use vector drawables in older versions without needing to worry about compat classes or attributes