陣列計數錯誤

我有兩種方法。從第一種方法我發送數組到第二種方法。在我的第一個方法中，[數組數]值是2.但是在seconf方法中，值是1.但是它們在兩種方法中都應該是相同的。我知道這是一個愚蠢的錯誤。但我不完全明白我犯了錯誤的地方。陣列計數錯誤

第一種方法：

-(void)uploadOverlayManually: (NSMutableArray *)path{ 

NSFileManager *fileManager = [NSFileManager defaultManager]; 

NSLog(@"Array count #1: %d",[path count]); 

for (int i =0; i < [path count]; i++) { 

    imagePath = [path objectAtIndex:i]; 

    NSString *infoPath = [[imagePath stringByDeletingPathExtension] stringByAppendingPathExtension:@"info"]; 
    NSData *infoData = [[NSMutableData alloc] initWithContentsOfFile:infoPath]; 

    NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:infoData]; 
    MediaInformation *currentInfo = [unarchiver decodeObjectForKey:@"info"]; 
    [unarchiver finishDecoding]; 

    UIImage *baseImage = [UIImage imageWithContentsOfFile:imagePath]; 
    NSData *data = [root addImageOverlay:baseImage withInfo:currentInfo andPath:imagePath]; 

    [data writeToFile:imagePath atomically:YES]; 

    fileUpload = [[NSMutableArray alloc] init]; 

    [fileUpload addObject:imagePath]; 

} 

[self upload:fileUpload];

}

第二種方法：

-(void)upload:(NSArray*)filePaths{ 

if (![[DBSession sharedSession] isLinked]) { 

    [[DBSession sharedSession] linkFromController:root]; //root 
} 

NSLog(@"Array count #2: %d",[filePaths count]); 

}

來源

2014-02-07 John

此行

fileUpload = [[NSMutableArray alloc] init];

內部你的循環重新創建該陣列。

它應該在循環之前，以便在每次迭代中添加一個對象。

來源

2014-02-07 11:14:05 Wain

您實例上的每個迴路一個新的數組，因此它可以永遠只是1

達到預期的行爲，使用（移動實例圈外）：

-(void)uploadOverlayManually: (NSMutableArray *)path{ 

NSFileManager *fileManager = [NSFileManager defaultManager]; 

NSLog(@"Array count #1: %d",[path count]); 

fileUpload = [[NSMutableArray alloc] init]; 

for (int i =0; i < [path count]; i++) { 

    imagePath = [path objectAtIndex:i]; 

    NSString *infoPath = [[imagePath stringByDeletingPathExtension] stringByAppendingPathExtension:@"info"]; 
    NSData *infoData = [[NSMutableData alloc] initWithContentsOfFile:infoPath]; 

    NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:infoData]; 
    MediaInformation *currentInfo = [unarchiver decodeObjectForKey:@"info"]; 
    [unarchiver finishDecoding]; 

    UIImage *baseImage = [UIImage imageWithContentsOfFile:imagePath]; 
    NSData *data = [root addImageOverlay:baseImage withInfo:currentInfo andPath:imagePath]; 

    [data writeToFile:imagePath atomically:YES]; 

    [fileUpload addObject:imagePath]; 

} 

[self upload:fileUpload];

來源

2014-02-07 11:16:11 lukaswelte

你在裏面分配陣列一個循環請分配它在viewDidLoad或任何函數只調用一次。

來源

2014-02-07 12:47:32 rahul

陣列計數錯誤

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