Saving Data on Android

Implemen/ng onCreate
Insert the code below into the 
onCreate
 method stub replacing the 
TODO
 marker:
db = ToDoDatabaseHandler(context)    
initializeUriMatching() 
return
 
true
The 
onCreate
 prepares the content provider by instantiating the database handler 
object, calling the 
initializeUriMatching
 function to initialize the URI matcher, and 
returns true to signal that this content provider was created successfully.
Implemen/ng getType
Next, implement the 
getType
 function by replacing the entire stub with the code 
below:
Saving Data on Android
Chapter 4: ContentProvider
raywenderlich.com
82

---

override
 
fun
 
getType
(uri: Uri)
 : String? = 
when
(sUriMatcher.match(uri)) { 
  URI_ALL_ITEMS_CODE -> MULTIPLE_RECORDS_MIME_TYPE 
  URI_ONE_ITEM_CODE -> SINGLE_RECORD_MIME_TYPE 
  
else
 -> 
null
 
}
The 
getType
 function accepts a Uri and matches it with the  URI code. Then it 
returns the correct MIME type. These constants are defined in the contract that has 
made the code for this function more self-descriptive.
Now that the trivial details are out of the way, the CRUD operations of the content 
provider can be implemented.