Querying content from Android widget
I am creating an Android Widget containg some contact info
I discovered that the getContentResolver()-method only exists in the Activity-class, and not in the AppWidgetProvider-class.
How do I query content from a widget?
Like so:
Cursor people = getContentResolver().query(SOME QUERY);
UPDATE:
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
{
String people = getContacts(context);
// Do something with people...
}
private String getContacts(Context context)
{
String peopleStr = "";
String[] projection = new String[] { ContactsContract.Contacts._ID,ContactsContract.Contacts.DISPLAY_NAME };
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + ("1") + "'";
Cursor people = context.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, projection, selection, null, sortOrder);
while(people.moveToNext())
{
int nameFieldColumnIndex = people.getColumnIndex(ContactsContract.Data.DISPLAY_NAME);
开发者_JAVA技巧 peopleStr += people.getString(nameFieldColumnIndex) + "\n";
}
people.close();
return peopleStr;
}
getContentResolver() is actually defined in Context class. That means, it is possible to call that thru the context passed in appwidgetprovider.onupdate() and those related methods.
加载中,请稍侯......
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