nsmutablearray泄漏内存iphone

时间:2012-07-31 09:48:20

标签: iphone ios ipad memory-leaks nsmutablearray

我有一个nsmutablearray,我需要通过应用程序,所以我在应用程序委托中声明它并在应用程序委托的dealloc方法中释放它。这是代码。

@interface AppDelegate : UIResponder <UIApplicationDelegate>{
    NSMutableArray *arr1;
    IBOutlet UINavigationController *navConroller;
}
@property (strong, nonatomic) IBOutlet UIWindow *window;
@property (nonatomic, retain) UINavigationController *navConroller;
@property (nonatomic, retain) NSMutableArray *arr1;


@implementation AppDelegate
@synthesize navConroller;
@synthesize window = _window;
@synthesize arr1;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.arr1 = [[NSMutableArray alloc] init];
    [self.window addSubview:navConroller.view];
    [self.window makeKeyAndVisible];
    return YES;
}

- (void)dealloc
{
    [self.arr1 release];
    [_window release];

    [super dealloc];
}

当我检查内存性能工具时,它会显示内存泄漏

self.arr1 = [[NSMutableArray alloc] init];

我在不同的类中使用此数组。任何建议将不胜感激。

我在那个地方使用了Pieter Gunst的回答和泄漏停止。但它正在另一个地方展示。在哪里我削减json并将记录存储在arr1中。这是代码。

-(void) apiCall:(NSString *)para1 {
    SBJSON *parser = [[SBJSON alloc] init];

    para1 = [para1 stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    para1 = [para1 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    NSString *url = [[[NSString alloc] initWithFormat:@"my api url",para1] autorelease];

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding]; 

    arr1 = [parser objectWithString:json_string error:nil];

    [json_string release];
    [parser release];

}

现在泄漏显示在下一行。

arr1 = [parser objectWithString:json_string error:nil];

有什么建议吗?

3 个答案:

答案 0 :(得分:2)

您已分配数组并通过访问属性保留它。 更改以下代码行;

self.arr1 = [[NSMutableArray alloc] init];

以下任何一行......

arr1 = [[NSMutableArray alloc] init];

OR

self.arr1 = [NSMutableArray array];

OR

NSMutableArray *tArr1 = [[NSMutableArray alloc] init];
self.arr1 = tArr1;
[tArr1 release];

答案 1 :(得分:1)

尝试@synthesize arr1 = _arr1;_arr1 = [[NSMutableArray alloc] init];

答案 2 :(得分:0)

正如Apurv已经提到的那样使用

self.arr1 = [NSMutableArray array];

self.arr1 = [[[NSMutableArray alloc] init] autorelease];

同时制作相同类型的所有属性(不要强力混合并保留):

@property (strong, nonatomic)

对于dealloc方法,使用自动生成的getter / setter:

- (void)dealloc {
    self.arr1 = nil;
    self.window = nil;
    [super dealloc];
}

提示:

由于

,主题启动器不使用ARC
[super dealloc];

导致错误“ARC禁止发送'dealloc'的显式消息”