Just a handy trick to handle lack of `android:textAllCaps="true"` on devices prior to ICS

my_awesome_layout.xml

<com.example.MyTextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/someIdICreated"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textAllCaps="true" 
    android:text="@string/that_awesome_string_to_be_capitalized" />

MyTextView.java

public class MyTextView extends TextView {

    private boolean allCaps = false;

    public MyTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        if( isLegacy() ) {
            allCaps = attrs.getAttributeBooleanValue("http://schemas.android.com/apk/res/android", "textAllCaps", false);
            if(allCaps) setText(getText()); // this line is really stupid, but initial setText() is called in TextView constructor, once allCaps isn't yet properly set...
        }
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        if( allCaps && isLegacy() ) text = text.toString().toUpperCase();
        super.setText(text, type);
    }

    private boolean isLegacy() {
        return Build.VERSION.SDK_INT<Build.VERSION_CODES.ICE_CREAM_SANDWICH;
    }

}