incompatible types: ArrayList<String> cannot be converted to String

Question

I don't see what is wrong with my ArrayList that i get this error:

Error:(133, 17) error: incompatible types: ArrayList cannot be converted to String

i want to get all columns from table name

   public String getListOfFiltersName(){

        ArrayList<String> arrTblNames = new ArrayList<String>();
        Cursor c = mydb.rawQuery("SELECT name FROM  " + MyDatabase.tableFilters, null);

        if (c.moveToFirst()) {
            while ( !c.isAfterLast() ) {
                arrTblNames.add( c.getString( c.getColumnIndex("name")) );
                c.moveToNext();
            }
        }
        c.close();
        mydb.close();
        return  arrTblNames;
    }

Pavneet_Singh · Accepted Answer · 2018-02-23 18:34:28Z

3

The type of returned value arrTblNames is ArrayList but the return type of getListOfFiltersName is String Hence the error so return type of getListOfFiltersName method should be ArrayList<String> instead of String

public ArrayList<String> getListOfFiltersName(){

or preferably public List<String> getListOfFiltersName(){

answered Feb 23, 2018 at 18:34

Pavneet_Singh

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