IOS的Getter Setter不能应用于Google Map

Question

我试图使用getter setter类的Objective C使用字符串，int和浮点数。但是在执行时，它显示从这一行开始的引用传递的变量访问不良:

[self setState:valueState];

Applpication部分:

  CheckPoints *myCar=[[CheckPoints alloc] init];
    [myCar setState:1];
    [myCar setLatitude:12.12312313];
    [myCar setLongitude:123.12312312313];
     NSString *theTextValue = @"Destination";
    [myCar setDesp:theTextValue];

下面是我的代码:

Checkpoints.m

#import "CheckPoints.h"
@implementation CheckPoints
@synthesize desp = _desp;
@synthesize latitude = _latitude;
@synthesize longitude = _longitude;
@synthesize state = _state;

- (NSString *) getDesp
{
    return desp;
}
- (float *) getLatitude
{
    return latitude;
}
- (float *) getLongitude
{
    return longitude;
}
- (int *) getState
{
    return state;
}
- (void)setDesp:(NSString *)valueDesp {
    [self setDesp:valueDesp];
}
- (void)setLatitude:(float )valueLatitude {
  //  self.latitude = valueLatitude;
    [self setLatitude:valueLatitude];
}
- (void)setLongitude:(float )valueLongitude {
    [self setLongitude:valueLongitude];
}
- (void)setState:(int )valueState {
    [self setState:valueState];  <---this segment
}
@end

Checkpoints.h

#import <GoogleMaps/GoogleMaps.h>
#import <Foundation/Foundation.h>
@interface CheckPoints : NSObject<CLLocationManagerDelegate> {
    NSString *desp;
    float* latitude;
    float* longitude;
    int* state;
}

@property (nonatomic, strong) NSString* desp;
@property  (nonatomic, assign) float* latitude;
@property  (nonatomic, assign) float* longitude;
@property  (nonatomic, assign) int* state;
- (NSString *)getDesp;
- (float *)getLatitude;
- (float *)getLongitude;
- (int *)getState;
- (void)setDesp:(NSString *)valueDesp;
- (void)setLatitude:(float )valueLatitude;
- (void)setLongitude:(float )valueLongitude;
- (void)setState:(int )valueState;
@end

Answer 1

你在这里创建了一个无限循环。在setter中，应该在实例变量中设置值。你从setter方法的主体中再次调用setter方法。因此，它将创建一个无限循环。这将超出您的堆栈，并且您的应用程序将崩溃。请参阅下面的代码，以使您的setter方法正确。

- (void)setState:(int )valueState {
    _state = valueState;
}

用同样的方法修改其他setter方法