Android - Expected Resource of type ID

Question

I have this code

final static int TITLE_ID = 1; final static int REVIEW_ID = 2; 

Now, I want to create a new layout in my main class

public View createContent() {     // create linear layout for the entire view     LinearLayout layout = new LinearLayout(this);     layout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,             ViewGroup.LayoutParams.WRAP_CONTENT));     layout.setOrientation(LinearLayout.VERTICAL);      // create TextView for the title     TextView titleView = new TextView(this);     titleView.setId(TITLE_ID);     titleView.setTextColor(Color.GRAY);     layout.addView(titleView);      StarView sv = new StarView(this);     sv.setId(REVIEW_ID);     layout.addView(sv);      return layout; } 

But when ever I call TITLE_ID and REVIEW_ID, it gives me an error

Supplying the wrong type of resource identifier.
For example, when calling Resources.getString(int id), you should be passing R.string.something, not R.drawable.something.
Passing the wrong constant to a method which expects one of a specific set of constants. For example, when calling View#setLayoutDirection, the parameter must be android.view.View.LAYOUT_DIRECTION_LTR or android.view.View.LAYOUT_DIRECTION_RTL.

I don't have any problem running this code. I'm just wondering why it gives me an error. Any idea?

Answer 1

This is not a compiler error. It is just editor validation error(lint warning) as this is not a common way to deal with Ids.

So if your app supporting API 17 and higher,

you can call View.generateViewId as

  titleView.setId(View.generateViewId()); 

and

  sv.setId(View.generateViewId()); 

and for API<17

1. open your project's res/values/ folder
2. create an xml file called ids.xml

with the following content:

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

then in your code,

  titleView.setId(R.id.titleId); 

and

  sv.setId(R.id.svId); 

---

And to disable this warning (If you want)

In Android Studio click on light bulb on line with this 'error'. And select Disable inspection in first submenu.