error: Expected identifier or '('

in File.h

I have variable are:

NSString *Category;

in .m and .h

I get this error "Expected identifier or '(' " on this line of code:

------------------------------------.h

Category = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectStatement,3)];

[Categoryarray addObject:Category];

Category = [Categoryarray objectAtIndex:i];

sqlite3_bind_text(addStmt, 3, [Category UTF8String], -1, SQLITE_TRANSIENT); //! Receiver type 'Category'(aka 'struct objc_category *') is not Object..

Category is not an Object-C class name or alias

----------------------------开发者_运维问答-----------end

and in second class are show red mistake: -----------------.h sub class

IBOutlet UITextField *Category;

----------------.m sub class

if([Category.text isEqualToString:@""] || Category.text == nil){ // ! expect ";" in expression
    Category.text=@" ";
}

In code another line not wrong but only this line is wrong.

and im not sure why, can anyone help?

If "Category" is NSString, you can directly do

if([Category isEqualToString:@""] || Category == nil){ 

}

I think you are experiencing a name clash. Category is defined in obj-class.h like this:

typedef struct objc_category *Category;

Hence, your error (from your comments):

Receiver type 'Category'(aka 'struct objc_category *') is not Objective-C class.

Renaming your instance variable to something else should fix the issue (almost, keep reading).

Also, your variable is a NSString and does not have a property text.

if([Category.text isEqualToString:@""] || Category.text == nil){
    Category.text=@" ";
}

You can invoke those methods on the NSString directly like this:

if([myString isEqualToString:@""] || myString == nil) {
    myString = @"";
}

"Category" is NSString, So you can directly do

if([Category isEqualToString:@""] || Category == nil){ 
  Category = @"";
}