I want to create a custom element containing an image view and an edit text.

The code looks like this:

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android" >

    <ImageView
        android:id="@+id/editTextWithIconImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_gravity="center"/>

    <EditText
        android:id="@+id/editTextWithIconEditText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:layout_centerVertical="true"
        android:textSize="@dimen/text_size"
        />

</merge>

And the view implementation:

public class EditTextWithIcon extends LinearLayout {
    private EditText editText;
    private ImageView imageView;

    public EditTextWithIcon(Context context, AttributeSet attrs) {
        super(context, attrs);

        TypedArray a = context.obtainStyledAttributes(attrs,
                R.styleable.EditTextWithIcon, 0, 0);
        String hint = a.getString(R.styleable.EditTextWithIcon_custom_hint);
        boolean focusable = a.getBoolean(R.styleable.EditTextWithIcon_focusable, true);

        int iconSrc = a.getResourceId(R.styleable.EditTextWithIcon_icon_src, -1);
        a.recycle();

        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.edit_text_with_icon, this, true);

        editText = findViewById(R.id.editTextWithIconEditText);
        imageView = findViewById(R.id.editTextWithIconImage);

        editText.setHint(hint);
        editText.setFocusable(focusable);
        imageView.setImageResource(iconSrc);

    }

    public void setText(String text){
        editText.setText(text);
    }

    public String getText(){
        return editText.getText().toString();
    }
}

The attribute I created like:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="EditTextWithIcon">
        <attr name="custom_hint" format="string" localization="suggested" />
        <attr name="text" format="string" localization="suggested" />
        <attr name="focusable" format="boolean" localization="suggested" />
        <attr name="icon_src" format="reference" localization="suggested" />
    </declare-styleable>
</resources>

Everything works like expected besides the two way binding of the text property. When I try to access it from my view like app:test="@={viewModel.title}" I receive the following error:

Cannot find the getter for attribute ‘app:test’ with value type java.lang.String

Do you have any idea why the getter method is not recognized but the setter is?