ContactProvider query methods:

 @ Nullable 
@ Override 
Public Cursor query (@ NonNull Uri Uri, @ Nullable String [] the columns, @ Nullable String selection, @ Nullable String [] selectionArgs, @ Nullable String sortOrder) {
Int match=uriMatcher. Match (uri); 
Cursor Cursor=null; 
The switch (match) {
Case CONTACT: 
SQLiteDatabase db=openHelper. GetReadableDatabase (); 
Cursor=db. Query (ContactOpenHelper T_CONTACT, columns, selection, selectionArgs, null, null, sortOrder); 
The I (" ContactProvider ", "ContactProvider querry success!!!! "); 
break; 
Default: 
break; 
} 
Return the cursor; 
} 

Insert () :


In the logcat output is as follows:


Then data/data/corresponding package directory/databases/contact db export, use sqlite expert to open is not what data is this why?

CodePudding user response:

How much the db file size

CodePudding user response:

reference 1/f, wang can reply:

how much the db file size

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