Android：将按钮与用户无法看到的值相关联

Question

I want to have a value (eg integer 17) associated with a button. When the button is clicked I want to retrieve that value. How do I do that?

I am readingthis since button extends TextView . I've scanned the XML attributes but I cannot find anything. I was thinking about something like casting the View that I get in my activity method to a (Button) and then call something like

int my_database_int = button.getValue() 

I find it hard to believe that there is no such functionality?

Answer 1

There is a property for Button objects in which you can store almost anything,
and this is the tag:

int myvalue = 10;
button.setTag(myValue);

and then get it like:

int my_database_int = Integer.parseInt(button.getTag().toString());

You can also define the tag's value in xml:

android:tag="10"

Answer 2

Try using the android:tag="value" attribute in your XML and use button.getTag() in your java class. The method returns a object you have to typecast to your desired format.

Answer 3

Try button.getId() in Java file. It will return integer unique id of button view