Get value from SQLite and Cursor comparison problem

I access the SQLite database on device. And 开发者_如何学编程get some values from table

Cursor c = db.query(.....);

I try compare this values to other string values like that:

if(c.getString(0) == "value")

but this comparison returns false all time.

In debug, i see the values and c.getString(0) is "value", but comparison returns false..

How can I compare these values?

I tried c.getString(0).toString() too.

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Try using:

if(c.getString(0).equals("value"))

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realize that c.getString(0) means that you are requesting the 0 column index on the record currently being pointed to by the Cursor object. if you are not using managedQuery, i suggest you call c.moveToFirst() before attempting to pull data. then explicity request the column index you want with c.getString(c.getColumnIndex("nameofcolumn"));. note, of course, that "nameofcolumn" must have been requested in the query.

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You don't need to use toString() after getting value like getString(0). You can just simply compare this using this statement:

if(cursor.getString(0).equals("value")){

}