Objective c 从另一个类访问NSMutableArray
这就是我的实体类的外观: BaseDataEntity.hObjective c 从另一个类访问NSMutableArray,objective-c,xcode,nsmutablearray,Objective C,Xcode,Nsmutablearray,这就是我的实体类的外观: BaseDataEntity.h #import -Foundation/Foundation.h @interface BaseDataEntity : NSObject @property (assign) NSMutableArray *cbxDataList; @property (assign) NSString *resaultText; @end BaseDataEntity.m #import "BaseDataEntity.h" @impl
#import -Foundation/Foundation.h
@interface BaseDataEntity : NSObject
@property (assign) NSMutableArray *cbxDataList;
@property (assign) NSString *resaultText;
@end
BaseDataEntity.m
#import "BaseDataEntity.h"
@implementation BaseDataEntity
@synthesize cbxDataList = _cbxDataList;
@synthesize resaultText = _resaultText;
@end
这就是我尝试访问它们的方式:
-(void)applicationDidFinishLaunching:(NSNotification *)aNotification{
BaseDataEntity *aBaseDataEntity = [[BaseDataEntity alloc] init];
[self setBaseDataEntity:aBaseDataEntity];
}
-(IBAction)ReadPort:(id)sender {
NSMutableArray* array = [[NSMutableArray alloc] init];
for (int i=0; i<10; i++) {
NSString *temp = [NSString stringWithFormat:@"Test %d", i];
[array addObject:temp];
}
[self.baseDataEntity setCbxDataList:array];
NSLog(@" cbxDataList count = %lu",[array count]);
[array release];
[self.baseDataEntity setResaultText:@"Test"];
[self updateUserInterface:TRUE];
}
-(void)updateUserInterface:(BOOL)piClear{
NSString *textValue = [NSString stringWithFormat:@"%@"
,[self.baseDataEntity resaultText]];
if([self.ResaultTextField stringValue] != nil && !piClear){
textValue = [NSString stringWithFormat:@"%@\n%@", textValue
,[self.ResaultTextField stringValue]];
}
NSMutableArray* array = [[NSMutableArray alloc] initWithArray:
[self.baseDataEntity.cbxDataList value]];
for (int i = 0; i < [array count]; i++) {
textValue = [NSString stringWithFormat:@"%@\n%@", textValue
,[array objectAtIndex:i]];
}
[array release];
[self.ResaultTextField setStringValue:textValue];
}
-(无效)应用程序设计完成启动:(NSNotification*)通知{
BaseDataEntity*AbastateAEntity=[[BaseDataEntity alloc]init];
[自我挫败数据实体:自我挫败];
}
-(iAction)读取端口:(id)发送方{
NSMUTABLEARRY*array=[[NSMUTABLEARRY alloc]init];
对于(int i=0;i您应该使用retain而不是assign来增加cbxDataList的retain计数
@property (retain) NSMutableArray *cbxDataList;
请注意,该对象需要在某个时候释放,否则可能会出现内存泄漏。在下面的函数中
-(void)updateUserInterface:(BOOL)piClear
数组创建错误
NSMutableArray* array = [[NSMutableArray alloc] initWithArray:
[self.baseDataEntity.cbxDataList value]];
上述代码需要替换为:
NSMutableArray* array = [[NSMutableArray alloc] initWithArray:
self.baseDataEntity.cbxDataList];
试试这些:
@property (retain) NSMutableArray *cbxDataList;
@property (assign) NSString *resaultText;
在-(void)applicationdFinishLaunching:(NSNotification*)通知中
alloc+init两者。这不是答案。!!Tnx为答案。它正在进行更多更改:NSMutableArray*array=[[NSMutableArray alloc]initWithArray:[self.baseDataEntity cbxdata]];是的,我后来看到了。Tnx