从UITextField类继承一个类

.h文件

1 @interface CustomTextField : UITextField2 3 @end

 

.m文件

1 #import "CustomTextField.h" 2  3 @implementation CustomTextField 4  5 - (CGRect)textRectForBounds:(CGRect)bounds{ 6     return CGRectInset(bounds, 5, 0); 7 } 8  9 - (CGRect)editingRectForBounds:(CGRect)bounds{10     return CGRectInset(bounds, 5, 0);    11 }12 13 - (void)drawRect:(CGRect)rect{14     //[super drawRect:rect];15     UIImage *bg = [[UIImage imageNamed:@"text_field_teal.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(15, 5, 15, 5)];16     [bg drawInRect:[self bounds]];17 }18 19 @end