Let's say I have a custom view like this (This is just an example):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <EditText android:id="@+id/custom_view_edittext" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout> And I have created a custom attribute in attrs.xml:
<declare-styleable name="CustomView"> <attr name="myCustomAttribute" /> </declare-styleable> This is the code for this imaginary custom view:
public class CustomView extends LinearLayout { private String mCustomAttr; public CustomView(Context context) { super(context); configure(context); } public CustomView(Context context, @Nullable AttributeSet attrs) { super(context, attrs); setupAttributes(context, attrs); configure(context); } public CustomView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); setupAttributes(context, attrs); configure(context); } private void setupAttributes(Context context, AttributeSet attrs) { TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.CustomView); mCustomAttr = array.getString(R.styleable.CustomView_myCustomAttribute); array.recycle(); } private void configure(Context context) { LayoutInflater.from(context).inflate(R.layout.custom_view_layout, this); EditText editText = findViewById(R.id.custom_view_edittext); // and so on } } What I want to do is use EditText-specific xml attribute as an attribute for my CustomView even though its root is LinearLayout. For example:
<path.to.package.CustomView android:layout_width="match_parent" android:layout_height="wrap_content" app:myCustomAttribute="whatever" android:imeOptions="actionDone" /> Is there a way to do this without having to create every EditText attribute in my declare-styleable? Essentially I just want something like this for built in xml attributes in my setupAttributes function.
TypedArray array = context.obtainStyledAttributes(attrs, android.R.styleable.EditText); 