The key must be an application-specific resource id

Question

Why do I get this Exception?

05-18 20:29:38.044: ERROR/AndroidRuntime(5453): java.lang.IllegalArgumentException: The key must be an application-specific reso         


        

Answer 1

THIS WILL DO THE JOB...

If you just have 1 setTag in your class, you could use any int, maybe static final declared in the top.

The problem comes when you had 2 or more setTag's with different keys. I mean:

public static final int KEY_1 = 1;
public static final int KEY_2 = 2;
...
setTag(KEY_1)
setTag(KEY_2)
...

That scenario is wrong. You then need to add a value file called maybe ids.xml with the following:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item type="id" name="resourceDrawable" />
    <item type="id" name="imageURI" />
</resources>

Then, in your class, call:

 ...
 setTag(R.id.resourceDrawable, KEY_1)
 setTag(R.id.imageURI, KEY_2)
 ...

Answer 2

The reason why you want to save the value by an id is, that you want to cover more than one value in this tag, right?
Here a more simple solution:
Let's say you want to save two values (Strings) into this tag: "firstname" and "lastname". You can save them both in one string, separated by semicolon:

v.setTag(firstname + ";" + lastname);

... and access them by splitting them into an string array:

String[] data = v.getTag().toString().split(";");
System.out.println(data[0]) //firstname
System.out.println(data[1]) //lastname

Answer 3

Here is a simple workaround that works for me:

int tagKey = "YourSimpleKey".hashCode();

myView.setTag(tagKey, "MyTagObject");

the important clue here is to call .hashCode(); on the String

Answer 4

The tag id must be unique so it wants it to be an id created in a resources file to guarantee uniqueness.

If the view will only contain one tag though you can just do

setTag(objContact.onlineid);