Question

Is there a way I can store/retrieve arbitrary values from a view, similar to HTML5 data attributes?
This way, I can have a view call generic onClick() methods and the method can retrieve the related data.

e.g:

<ImageView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:onClick="setCountry"
    android:src="@drawable/ic_flag_germany" />

<ImageView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:onClick="setCountry"
    android:src="@drawable/ic_flag_france" />
...

I would like to be able to retrieve a value from the one that got clicked.

public void setCountry(View v){
     //retrieve data somehow
}

Answer 1

You can use the View‘s tag property. It is intented for that purpose.

For example:

<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="setCountry"
android:src="@drawable/ic_flag_germany" 
android:tag="Germany" />

…

public void setCountry(View v) {
    System.out.println(v.getTag());
}