• 文件夾工具
  • 清空文件夾
  • 獲取文件夾尺寸

#import "ZYFileManager.h"

@implementation ZYFileManager

//清空文件夾
+ (void)removeDirectoryPath:(NSString *)directoryPath
{
    NSFileManager *mgr = [NSFileManager defaultManager];
    
    BOOL isDirectory;
    BOOL isExist = [mgr fileExistsAtPath:directoryPath isDirectory:&isDirectory];
    
    if (!isExist || !isDirectory) {
        // 報錯:拋異常
        NSException *excp = [NSException exceptionWithName:@"filePathError" reason:@"傳錯,必須傳文件夾路徑" userInfo:nil];
        
        [excp raise];
        
    }

    NSArray *subpaths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:directoryPath error:nil];
    
    for (NSString *subPath in subpaths) {
        
        NSString *filePath = [directoryPath stringByAppendingPathComponent:subPath];
        
        [[NSFileManager defaultManager] removeItemAtPath:filePath error:nil];
    }
}

// 獲取文件夾尺寸
+ (NSInteger)getDirectorySize:(NSString *)directoryPath
{
    // 獲取文件管理者
    NSFileManager *mgr = [NSFileManager defaultManager];
    
    BOOL isDirectory;
    BOOL isExist = [mgr fileExistsAtPath:directoryPath isDirectory:&isDirectory];
    
    if (!isExist || !isDirectory) {
        // 報錯:拋異常
        NSException *excp = [NSException exceptionWithName:@"filePathError" reason:@"笨蛋,傳錯,必須傳文件夾路徑" userInfo:nil];
        
        [excp raise];
        
    }

    
    /*
     獲取這個文件夾中所有文件路徑,然后累加 = 文件夾的尺寸
     */

   
    // 獲取文件夾下所有的文件
    NSArray *subpaths = [mgr subpathsAtPath:directoryPath];
    NSInteger totalSize = 0;
    
    for (NSString *subpath in subpaths) {
        
        // 拼接文件全路徑
        NSString *filePath = [directoryPath stringByAppendingPathComponent:subpath];
        
        // 排除文件夾
        BOOL isDirectory;
        BOOL isExist = [mgr fileExistsAtPath:filePath isDirectory:&isDirectory];
        if (!isExist || isDirectory) continue;
        
        // 隱藏文件
        if ([filePath containsString:@".DS"]) continue;
        
        // 指定路徑獲取這個路徑的屬性
        // attributesOfItemAtPath:只能獲取文件屬性
        NSDictionary *attr = [mgr attributesOfItemAtPath:filePath error:nil];
        NSInteger size = [attr fileSize];
        
        totalSize += size;
    }
    
    return totalSize;
    
}

@end