呼叫方法

Created: November-22, 2018

呼叫例項方法：

[classInstance hello];

 @interface Sample
 -(void)hello; // exposing the class Instance method
 @end

 @implementation Sample
     -(void)hello{
        NSLog(@"hello");
      }
 @end

在當前例項上呼叫例項方法：

[self hello];

@implementation Sample

     -(void)otherMethod{
       [self hello];
     }

     -(void)hello{
        NSLog(@"hello");
      }
 @end

呼叫帶引數的方法：

[classInstance addInt:1 toInt:2];

 @implementation Sample
     -(void)add:(NSInteger)add to:(NSInteger)to
        NSLog(@"sum = %d",(add+to));
      }
 @end

呼叫類方法：

[Class hello];

 @interface Sample
 +(void)hello; // exposing the class method
 @end

 @implementation Sample
     +(void)hello{
        NSLog(@"hello");
      }
 @end