[android-developers] Re: Question about built-in content provider

Somebody please take me out of this group.

Mark Murphy <mmurphy@commonsware.com> wrote:

>
>tauntz wrote:
>> In 1.5 and 1.6 the following code snippet works:
>> ---
>> import android.provider.Contacts;
>> import android.provider.Contacts.People;
>>
>> ContentValues values = new ContentValues();
>> values.put(Contacts.ExtensionsColumns.NAME, "name");
>> values.put(Contacts.ExtensionsColumns.VALUE, "value");
>> Uri personUri = ContentUris.withAppendedId(People.CONTENT_URI, 1);
>> Uri personExtensionUri = Uri.withAppendedPath(personUri,
>> People.Extensions.CONTENT_DIRECTORY);
>> getContentResolver().insert(personExtensionUri, values);
>> ---
>>
>> Can we rely on the fact that the same URIs will be handled by the
>> built-in content providers also in future versions/devices or is there
>> a possibility that some of them do not support it by throwing a
>> UnsupportedOperationException ( Unknown uri: ... )? The documentation
>> for content providers says that: "Android ships with a number of
>> content providers for common data types (audio, video, images,
>> personal contact information, and so on). You can see some of them
>> listed in the android.provider package." Does that mean that
>> everything that is under android.provider.* has to be supported by all
>> future Android versions/devices?
>
>"Has to" is a strong expression.
>
>Remember that Android is open source, and therefore device manufacturers
>can do what they want. Those having the Android Market on-device are
>held to a higher compatibility standard, but there may be holes in the
>testing process.
>
>Many devices will support the standard content providers with the
>standard URLs and projections. I'll even go out on a limb and say that
>most devices will do that. I'll be fairly surprised if all devices do
>that, though.
>
>--
>Mark Murphy (a Commons Guy)
>http://commonsware.com | http://twitter.com/commonsguy
>
>_The Busy Coder's Guide to *Advanced* Android Development_
>Version 1.1 Available!
>
>>

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