//組織字典數據- (NSMutableDictionary *)setupDicData{       NSMutableDictionary *dict = [NSMutableDictionary dictionary];    for (int i = 0; i <= 30; i++) {               [dict setObject:[self setupArrayData] forKey:[NSString stringWithFormat:@"%d%@",i,@"class"]];    }    return dict;}//組織數組數據- (NSMutableArray *)setupArrayData{       NSMutableArray *marry = [NSMutableArray array];       for (int i = 0; i<=30; i++) {               NSString *s = [NSString stringWithFormat:@"%@",@"data-test"];               [marry addObject:s];           }    return marry;}

- (void)viewDidLoad {       [super viewDidLoad];          while (true) {               //30.0定時執行               [NSThread sleepForTimeInterval:30.0];               NSDictionary *dict = [self setupDicData];               NSLog(@"%@",dict);        //每次數據內存都得不到釋放    }}

- (void)usingDatadosomething{       //30.0定時執行       [NSThread sleepForTimeInterval:0.10];       NSDictionary *dict = [self setupDicData];       NSLog(@"%@",dict);    //每次數據內存都得不到釋放}- (void)viewDidLoad {       [super viewDidLoad];       [NSTimer scheduledTimerWithTimeInterval:30.0 target:self selector:@selector(usingDatadosomething) userInfo:self repeats:YES];       [[NSRunLoop currentRunLoop] run];   }