iPhone - 文件列表的屬性

Question

我有一個mutableArray，它顯示了tableView中的文件列表。我已經將這些文件存儲在一個目錄中。

我使用NSfileManager類和attributesOfItemAtPath方法來檢索類似檔案大小的文件的某些屬性，文件類型..

在第二階段中我想具有顯示特定的文件時的性質的的DetailView控制器在tableView中觸摸。

問題是我不知道如何將這些屬性像fileSize和fileType分別綁定到NSDictionary並使其顯示在該特定文件的detailView中。

這是我列出文件和列出屬性的源代碼。

- (void)listFiles { 

    NSFileManager *fm =[NSFileManager defaultManager]; 
    NSError *error = nil; 
    NSString *parentDirectory = @"/Users/akilan/Documents"; 
    NSArray *paths = [fm contentsOfDirectoryAtPath:parentDirectory error:&error]; 
    if (error) { 
     NSLog(@"%@", [error localizedDescription]); 
     error = nil; 
    } 
    directoryContent = [[NSMutableArray alloc] init]; 
    for (NSString *path in paths){ 
     NSString *documentsDirectory = [[path lastPathComponent] stringByDeletingPathExtension]; 
     [directoryContent addObject:documentsDirectory]; 
    } 
} 

-(void) willProcessPath { 
    NSString *parentDirectory = @"/Users/akilan/Documents"; 
    NSArray *paths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:parentDirectory error:nil]; 
    for (NSString *path in paths){ 
     filesPath = [parentDirectory stringByAppendingPathComponent:path]; 
     NSDictionary *attrDir = [[NSFileManager defaultManager]attributesOfItemAtPath:filesPath error:nil]; 
     filesSize = [attrDir objectForKey:NSFileSize]; 
     filesName = (NSString *)directoryContent; 
     filesType = [path pathExtension]; 
     createdDate = [attrDir objectForKey:NSFileCreationDate]; 
     modifiedDate = [attrDir objectForKey:NSFileModificationDate]; 
    } 
} 

請幫我進行下一步..在此先感謝..

Answer 1

嘗試是這樣的：

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    [self listFiles]; 
} 



- (void)listFiles { 

    NSFileManager *fm =[NSFileManager defaultManager]; 
    NSError *error = nil; 
    NSString *parentDirectory = [self getDocumentsPath]; 
    NSArray *paths = [fm contentsOfDirectoryAtPath:parentDirectory error:&error]; 

    if (error) { 
     NSLog(@"%@", [error localizedDescription]); 
     error = nil; 
    } 

    NSMutableArray *array = [[NSMutableArray alloc] init]; 
    self.directoryContent = array; 
    [array release]; 

    for (NSString *path in paths){ 
     NSString *fullPath = [self getPathToFileInDocumentsDirectory:path]; 
     NSMutableDictionary *filePropertiesDictionary = [NSMutableDictionary dictionaryWithDictionary:[[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:nil]]; 
     [filePropertiesDictionary setObject:fullPath forKey:@"fullPath"]; 
     [filePropertiesDictionary setObject:path forKey:@"fileName"]; 
     [directoryContent addObject:filePropertiesDictionary]; 
    } 
    NSLog(@"%@", directoryContent); 
} 

- (NSString *)getDocumentsPath { 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *documentsDirectoryPath = [paths objectAtIndex:0]; 

    return documentsDirectoryPath; 
} 
- (NSString *)getPathToFileInDocumentsDirectory:(NSString *)fileName { 
    return [[self getDocumentsPath] stringByAppendingPathComponent:fileName]; 
} 

Answer 2

爲什麼不創建一個類「的FileDescriptor」具有以下屬性：

NSString *fileName; 
NSString *fileSize; 
NSString *fileType; 
NSDate *createdDate; 
NSDate *modifiedDate; 

當遍歷你的目錄，你爲每個文件創建這個類的一個實例，並將它存儲在一個數組（或者字典，如果你喜歡的話）。然後，你可以使用數組

一）爲您的UITableViewCells

b）顯示每個文件的詳細視圖單擊單元格時提供數據。

如果您想使用字典，而不是（我認爲這是少了很多「乾淨」），你可以這樣做是這樣的：

NSDictionary *fileProperties = [NSDictionary dictionaryWithObjectsAndKeys: 
    fileSize, @"fileSize", 
    fileName, @"fileName", nil]; 

Answer 3

- (void)listFiles { 

    NSFileManager *fm =[NSFileManager defaultManager]; 
    NSError *error = nil; 
    NSString *parentDirectory = @"/Users/akilan/Documents"; 
    NSArray *paths = [fm contentsOfDirectoryAtPath:parentDirectory error:&error]; 
    if (error) { 
     NSLog(@"%@", [error localizedDescription]); 
     error = nil; 
    } 
    directoryContent = [[NSMutableArray alloc] init]; 
    for (NSString *path in paths){ 
     NSString *documentsDirectory = [[path lastPathComponent] stringByDeletingPathExtension]; 
     [directoryContent addObject:documentsDirectory]; 
    } 
} 

-(void) willProcessPath { 
    NSString *parentDirectory = @"/Users/akilan/Documents"; 
    NSArray *paths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:parentDirectory error:nil]; 
    for (NSString *path in paths){ 
     filesPath = [parentDirectory stringByAppendingPathComponent:path]; 
     NSDictionary *attrDir = [[NSFileManager defaultManager]attributesOfItemAtPath:filesPath error:nil]; 
     filesDirectory = [NSDictionary dictionaryWithObjectsAndKeys:filesSize, [attrDir objectForKey:NSFileSize], 
         filesName, (NSString *)directoryContent, filesType, [path pathExtension], 
         createdDate, [attrDir objectForKey:NSFileCreationDate], 
         modifiedDate, [attrDir objectForKey:NSFileModificationDate], nil]; 
     NSLog(@"%@", filesDirectory); 
    } 
} 

Answer 4

#import <UIKit/UIKit.h> 

@interface MyFilesList : UIViewController <UITableViewDelegate, UITableViewDataSource> { 
    NSMutableArray *directoryContent; 
    IBOutlet UITableView *filesTable; 
    IBOutlet NSNumber *filesSize; 
    IBOutlet NSString *filesName; 
    IBOutlet NSString *filesType; 
    IBOutlet NSString *filesPath; 
    IBOutlet NSDate *createdDate; 
    IBOutlet NSDate *modifiedDate; 
    NSMutableDictionary *filesDirectory; 
} 

@property (nonatomic, retain) NSMutableArray *directoryContent; 
@property (nonatomic, retain) IBOutlet UITableView *filesTable; 
@property (nonatomic, retain) IBOutlet NSNumber *filesSize; 
@property (nonatomic, retain) IBOutlet NSString *filesName; 
@property (nonatomic, retain) IBOutlet NSString *filesType; 
@property (nonatomic, retain) IBOutlet NSString *filesPath; 
@property (nonatomic, retain) IBOutlet NSDate *createdDate; 
@property (nonatomic, retain) IBOutlet NSDate *modifiedDate; 
@property (nonatomic, retain) NSMutableDictionary *filesDirectory; 

- (void)listFiles; 
- (void) willProcessPath; 
@end