overriding UIView:initWithFrame and got nil parameters

I have a class that extend from UIView. I used that for creating custom default view. I use the -(id)initWithFrame:(CGRect)frame; but when i used the initializer, the frame parameter is always null value.

Here is the code:

#import "SomeView.h"
@implementation POIView
@synthesize theButton;

- (id)initWithFrame:(CGRect)frame {
  self = [super initWithFrame:frame];
  if (self) {
    NSLog(@"%@",frame);
  }
  return self;
}
@end

The NSLog result is always (null), and this is where i called the initialization

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 static NSString *CellIdentifier = @"CELL_ID";
 const int THE_TAG         = 1000;

 UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
 if (cell == nil) {
   cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
   CGRect *rect = CGRectMake(0, 0, tableView.frame.size.width,tableView.rowHeight);
   someView = [[SomeView alloc] initWithFrame:rect];
 }else{
   someView = (SomeView *) [cell viewWithTag:THE_TAG];
 }
 return cell;
}
开发者_Go百科

I used it now on the tableView, but i used the someview to some UILabel too.

frame is a struct, it is not a sub-class from NSObject. You can show the frame value by following way.

NSLog(@"%.2f %.2f %.2f %.2f",frame.origin.x, frame.origin.y, frame.size.width, frame.size.height);

NSLog(@"%@", aObj); is equal to NSLog(@"%@",[aObj description]);

The problem I see is that CGRectMake has return type CGRect and not CGRect *. Thus the line:

CGRect *rect = CGRectMake(0, 0, tableView.frame.size.width,tableView.rowHeight);

should be

CGRect rect = CGRectMake(0, 0, tableView.frame.size.width,tableView.rowHeight);