Iphone文件操作和字符串操作的工具类

直接上代码：
.h文件：
[cpp] #import <Foundation/Foundation.h>
#define DEFAULT_DATE_TIME_FORMAT (@"yyyy-MM-dd'T'HH:mm:ss'Z'")
#define DEFAULT_DATE_FORMAT (@"yyyy-MM-dd")
#define DEFAULT_TIME_FORMAT (@"HH:mm:ss'Z'")

@inte易做图ce FileUtils : NSObject {

}

+(NSString*) settingPath;
+(NSString*) cachePath;
+(BOOL) clearCache:(NSError**)error;
+(NSString*) fileAtBundleResource:(NSString*)file;
+(BOOL) fileExist:(NSString*)file;
+(BOOL) fileExistAtCache:(NSString*)file;
+(NSString*) cachedFile:(NSString*)file;
+(BOOL) writeToFile:(NSString*)fileWithPath withData:(NSData*)data;
+(BOOL)deleteFile:(NSString*)fileWithPath;
+(NSString*) documentPathWith:(NSString*)cmp;
@end

@inte易做图ce ValueUtils : NSObject {

}
+(BOOL) isEmpty:(NSString*)text;
+(BOOL) boolValue:(NSDictionary*)dict forKey:(id)key;
+(float) floatValue:(NSDictionary*)dict forKey:(id)key;
+(NSInteger) intValue:(NSDictionary*)dict forKey:(id)key;
+(NSString*) stringValue:(NSDictionary*)dict forKey:(id)key;
+(NSArray*) arrayValue:(NSDictionary*)dict forKey:(id)key;
+(id) noneNullValue:(NSDictionary*)dict forKey:(id)key;
+(NSDictionary*) dictionaryValue:(NSDictionary*)dict forKey:(id)key;
+(BOOL) stringEquals:(NSString*)str1 to:(NSString*)str2;
+(BOOL) caseEquals:(NSString*)str1 to:(NSString*)str2;
+(NSString*) refineUrl:(NSString*)url;
+(BOOL) isURLString:(NSString*)text;
+(BOOL) startWith:(NSString*)prefix forString:(NSString*)text;
+(BOOL) endWith:(NSString*)suffix forString:(NSString*)text;
+(NSDate *)stringToDate:(NSString *)string withFormat:(NSString*)fmt;
+(NSString*) dateToString:(NSDate*)date withFormat:(NSString*)fmt;
+(NSString*) idToString:(id)obj;
+(BOOL) booleanToBool:(id)bobj;
@end

.m文件：
[cpp] view plaincopy
#import "FileUtils.h"
#import "CJSONDeserializer.h"
#import "CJSONSerializer.h"

@implementation FileUtils

+(NSString*) settingPath
{
    ////Make a new director
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];

    documentsDirectory = [documentsDirectory stringByAppendingPathComponent:@".settings"];

    BOOL folder = NO;
    BOOL exist = [fileManager fileExistsAtPath:documentsDirectory isDirectory:&folder];
    if ( exist == YES && folder == YES ) {
        return [documentsDirectory stringByAppendingPathComponent:@"measets.ini"];
    }else{
        NSError* error = nil;
        [fileManager createDirectoryAtPath:documentsDirectory
               withIntermediateDirectories:YES
                                attributes:nil
                                     error:&error];
        if( error != nil ){
            NSLog(@"Can not create directory %@. Error is %@.", documentsDirectory,
                  [error description]);
            return nil;
        }
        return documentsDirectory;
    }
    /***
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     NSString *documentsDirectoryPath = [paths objectAtIndex:0];
     NSString *secondaryDirectoryPath = [documentsDirectoryPath stringByAppendingPathComponent:@"secondary"];
     NSString *databaseFile = [secondaryDirectoryPath stringByAppendingPathComponent:@"database.db"];

     NSFileManager *fileManager = [NSFileManager defaultManager];
     [fileManager removeItemAtPath:databaseFile error:NULL];
     ***/
}

+(BOOL) fileExist:(NSString*)file
{
    NSFileManager *fileManager = [NSFileManager defaultManager];
    return [fileManager fileExistsAtPath:file];
}

+(NSString*) fileAtBundleResource:(NSString*)file
{
    return [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:file];
}

+(BOOL) fileExistAtCache:(NSString*)file
{
    return [self fileExist:[self cachedFile:file]];
}

+(NSString*) cachedFile:(NSString*)file
{
    NSString* fileAtCache = [NSString stringWithFormat:@"%@%@",[self cachePath], file];
    return fileAtCache;
}

+(BOOL) writeToFile:(NSString*)fileWithPath withData:(NSData*)data
{
    BOOL folder = NO;
    NSFileManager *fileManager = [NSFileManager defaultManager];

    NSString* fileName = [fileWithPath lastPathComponent];
    NSInteger toIndex = [fileWithPath length] - [fileName length];
    NSString* path = [fileWithPath substringToIndex:toIndex];
    BOOL exist = [fileManager fileExistsAtPath:path isDirectory:&folder];
    if ( exist != YES ) {
        NSError* error = nil;
        [fileManager createDirectoryAtPath:path
               withIntermediateDirectories:YES
                                attributes:n

补充：移动开发 , IOS ,