iOS 数据存储 NSData存储转为NSDictionary存储
最近做app，涉及到关于数据的存储，对于远程数据的请求，有个问题就是，对于同样的请求，不做重复的操作，但是又能够保证，获取的数据在本地，并且即使的进行解析，之前是NSdata，这样的话，转换数据的话，就要涉及到一个中间步骤，就是将数据转换为json格式，在转换为NSdictionary，解析的过程会出现的可能性，导致数据不能及时响应，最近几次的闪退，估计是这个原因，于是做了调整，闪退的现象果然概率不再频繁。
这次主要是分享一下，修改后的封装类，主要是在里面添加了几个关于存储NSDictionary的方法
代码托管在github：https://github.com/zhangda89/IOS-StorageData
StorageData.m
//
// StorageData.m
// xunYi7
//
// Created by david on 13-6-28.
// Copyright (c) 2013年 david. All rights reserved.
//
#import <CommonCrypto/CommonDigest.h>
#import "StorageData.h"
#import "xunYi7AppDelegate.h"
@implementation StorageData
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
NSLog(@"开始结didReceiveData搜数据");
}
-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSLog(@"开始结didReceiveResponse搜数据");
}
-(void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(@"didFailWithError");
}
-(void) connectionDidFinishLoading:(NSURLConnection *)connection{
NSLog(@"connectionDidFinishLoading");
}
+(NSMutableData *)remoteFetchData:(NSString *)dataUrl{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
if([xunYi7AppDelegate isReachable]){
NSURL *url = [[NSURL alloc] initWithString:dataUrl];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60];
NSURLResponse *response = [[NSURLResponse alloc] init];
NSError *receiveDataError = [[NSError alloc] init];
NSMutableData *receivedData = (NSMutableData *)[NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&receiveDataError];
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
if(receivedData != nil){
if([self storageDataToFile:receivedData fileName:currentDataFilePath]){
[self removeDirectory];
}
}
return receivedData;
}else{
[xunYi7AppDelegate showNetworkMessage];
}
return nil;
}
+(NSMutableData *)localFetchData:(NSString *)dataUrl{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
NSMutableData *localData = [self fromFilenamePathFetchLocalData:currentDataFilePath];
if(localData != nil){//本地数据
return localData;
}else{//远程获取数据
NSMutableData *receivedData = [self remoteFetchData:dataUrl];
if(receivedData != nil){
if([self storageDataToFile:receivedData fileName:currentDataFilePath]){
// NSLog(@"保存成功");
[self removeDirectory];
}else{
// NSLog(@"保存失败");
}
}else{
if((localData = [self fromFilenamePathFetchLocalData:yesterdayDataFilePath]) != nil){
return localData;
}
}
return receivedData;
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-艺人排行版
+(NSDictionary *) localFetchPersonRankDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 Dictionary 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 Dictionary 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *personDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSDictionary *personInfo = [personDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:personInfo fileName:currentDataFilePath]){
// NSLog(@"远程数据存储成功");
return personInfo;
[self removeDirectory];
}else{
// NSLog(@"远程数据存储失败");s
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-关注列表
+(NSDictionary *) localFetchAttentionListDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchAttentionListDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchAttentionListDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *attentionDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSDictionary *attentionData = [attentionDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:attentionData fileName:currentDataFilePath]){
// NSLog(@"localFetchAttentionListDictionayData 远程数据存储成功");
return attentionData;
[self removeDirectory];
}else{
return attentionData;
// NSLog(@"localFetchAttentionListDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取远程数据的Dcitionary格式-关注列表
+(NSDictionary *) remoteFetchAttentionListDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *attentionDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSDictionary *attentionData = [attentionDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:attentionData fileName:currentDataFilePath]){
// NSLog(@"localFetchAttentionListDictionayData 远程数据存储成功");
return attentionData;
[self removeDirectory];
}else{
return attentionData;
// NSLog(@"localFetchAttentionListDictionayData 远程数据存储失败");
}
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-机会列表
+(NSDictionary *) localFetchChanceListDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchChanceListDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchChanceListDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *chanceDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *chanceData = [chanceDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:chanceData fileName:currentDataFilePath]){
// NSLog(@"localFetchChanceListDictionayData 远程数据存储成功");
return chanceData;
[self removeDirectory];
}else{
return chanceData;
// NSLog(@"localFetchChanceListDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-电视剧排行榜
+(NSDictionary *) localFetchTeleplayRankDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchTeleplayRankDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchTeleplayRankDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *teleplayDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *teleplayData = [teleplayDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:teleplayData fileName:currentDataFilePath]){
// NSLog(@"localFetchTeleplayRankDictionayData 远程数据存储成功");
return teleplayData;
[self removeDirectory];
}else{
return teleplayData;
// NSLog(@"localFetchTeleplayRankDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-艺人签单排行榜
+(NSDictionary *) localFetchStarkCheckDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchStarkCheckDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchStarkCheckDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *starkCheckDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *starkCheckData = [starkCheckDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:starkCheckData fileName:currentDataFilePath]){
// NSLog(@"localFetchStarkCheckDictionayData 远程数据存储成功");
return starkCheckData;
[self removeDirectory];
}else{
return starkCheckData;
// NSLog(@"localFetchStarkCheckDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取本地数据的Dcitionary格式-hotTeleplay
+(NSDictionary *) localFetchHotTeleplayDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchHotTeleplayDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchHotTeleplayDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *starkCheckDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *starkCheckData = [starkCheckDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:starkCheckData fileName:currentDataFilePath]){
// NSLog(@"localFetchHotTeleplayDictionayData 远程数据存储成功");
return starkCheckData;
[self removeDirectory];
}else{
return starkCheckData;
// NSLog(@"localFetchHotTeleplayDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 获取远程数据的Dcitionary格式-找演员
+(NSDictionary *) remoteFetchFindPerformersDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
//远程获取数据
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *personDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *searchPersonResult = [personDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:searchPersonResult fileName:currentDataFilePath]){
// NSLog(@"localFetchFindPerformersDictionayData 远程数据存储成功");
return searchPersonResult;
[self removeDirectory];
}else{
return searchPersonResult;
// NSLog(@"localFetchFindPerformersDictionayData 远程数据存储失败");
}
}
return nil;
}
+(NSDictionary *) localFetchFindPerformersDictionayData:(NSString *)dataUrlString{
NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
//创建目录
currentDataFilePath = [self createDirectory:currentDataFilePath];
currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-dictionary.plist",[self md5:dataUrlString]]];
NSDictionary *localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:currentDataFilePath];
if(localDictionaryData != nil){//本地数据
// NSLog(@"本地数据 localFetchFindPerformersDictionayData 数据");
return localDictionaryData;
}else{//远程获取数据
// NSLog(@"远程获取数据 localFetchFindPerformersDictionayData 数据");
NSMutableData *receivedData = [self remoteFetchData:dataUrlString];
if(receivedData != nil){
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSError *jsonError = [[NSError alloc] init];
NSDictionary *personDictionary = [NSJSONSerialization JSONObjectWithData:receivedData
options:NSJSONReadingMutableContainers
error:&jsonError];
NSMutableDictionary *searchPersonResult = [personDictionary objectForKey:@"data"];
if([self storageDictionaryDataToFile:searchPersonResult fileName:currentDataFilePath]){
// NSLog(@"localFetchFindPerformersDictionayData 远程数据存储成功");
return searchPersonResult;
[self removeDirectory];
}else{
return searchPersonResult;
// NSLog(@"localFetchFindPerformersDictionayData 远程数据存储失败");
}
}else{
if((localDictionaryData = [self fromFilenamePathFetchLocalDictionaryData:yesterdayDataFilePath]) != nil){
return localDictionaryData;
}
}
}
return nil;
}
#pragma mark - 存储Dictionary格式的数据到本地-艺人排行版
+(void) savePersonRankDictionaryToLocal:(NSMutableDictionary *)data dataUrlString:(NSString *)urlString{
}
//md5加密字符串
+(NSString *)md5:(NSString *)str{
const char *cStr = [str UTF8String];
unsigned char result[16];
CC_MD5(cStr, strlen(cStr), result); // This is the md5 call
return [NSString stringWithFormat:
@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}
//上传图片存储
+(void) saveUploadImage:(UIImage *)image withName:(NSString *)imageName{
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSError *error;
// 获取沙盒目录
NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
if(![fileManager fileExistsAtPath:fullPath]){
[fileManager createDirectoryAtPath:fullPath
withIntermediateDirectories:YES
attributes:nil
error:&error];
}
fullPath = [fullPath stringByAppendingPathComponent:imageName];
NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
// 将图片写入文件
[imageData writeToFile:fullPath atomically:NO];
}
//上传图片删除
+(void) removeUploadImage:(UIImage *)image withName:(NSString *)imageName{
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSError *error;
// 获取沙盒目录
NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
if(![fileManager fileExistsAtPath:fullPath]){
[fileManager removeItemAtPath:fullPath error:&error];
}
}
//获取存储的图片
+(NSString *)fetchUploadImagePath:(NSString *)imageName{
NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
fullPath = [fullPath stringByAppendingPathComponent:imageName];
return fullPath;
}
//判断文件是否存在
+(NSString *)isFileExists:(NSString *)fullpath{
NSFileManager *fileManager = [[NSFileManager alloc] init];
if([fileManager fileExistsAtPath:fullpath]){
return fullpath;
}
return nil;
}
//数据存储
//+(void)
//获取存储文件的目录
+(NSString *)dataPath{
//此处首先指定了图片存取路径（默认写到应用程序沙盒 中）
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
//并给文件起个文件名
NSString *filePathDerectory = [paths objectAtIndex:0];
return filePathDerectory;
}
//获取指定文件的数据
+(NSMutableData *)fromFilenamePathFetchLocalData:(NSString *)filename{
//保存数据到指定文件中
NSFileManager *fileManager = [[NSFileManager alloc] init];
if([fileManager fileExistsAtPath:filename]){
NSData *data = [fileManager contentsAtPath:filename];
return [data mutableCopy];
}
return nil;
}
+(NSDictionary *)fromFilenamePathFetchLocalDictionaryData:(NSString *)filename{
NSDictionary *dicData = [[NSDictionary alloc] initWithContentsOfFile:filename];
if(dicData != nil){
return dicData;
}
return nil;
}
//存储数据到指定文件
+(BOOL) storageDataToFile:(NSData *)data fileName:(NSString *)fileName{
//保存数据到指定文件中
NSFileManager *fileManager = [[NSFileManager alloc] init];
if([fileManager createFileAtPath:fileName contents:data attributes:nil]){
return YES;
}else{
return NO;
}
}
#pragma mark - 存储Dictionary格式的数据
+(BOOL) storageDictionaryDataToFile:(NSDictionary *)dicData fileName:(NSString *)fileName{
//保存数据到指定文件中
if([dicData writeToFile:fileName atomically:YES]){
return YES;
}else{
return NO;
}
}
//删除文件
+(void) deleteFile:(NSString *)fileName{
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSError *error;
[fileManager removeItemAtPath:fileName error:&error];
}
//获取今天的日期
+(NSString *) fetchTodayDate{
NSDate *currentDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
return [dateFormatter stringFromDate:currentDate];
}
//获取前天的日期
+(NSString *) fetchYesterdayBeforeDate{
NSDate *yesterdayDate = [NSDate dateWithTimeIntervalSinceNow:-(2 * (24 * 60 * 60))];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
return [dateFormatter stringFromDate:yesterdayDate];
}
//获取存储文件的数据
//创建文件
//创建目录
+(NSString *) createDirectory:(NSString *)directoryName{
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSError *error;
if(![fileManager fileExistsAtPath:directoryName]){
[fileManager createDirectoryAtPath:directoryName
withIntermediateDirectories:YES
attributes:nil
error:&error];
if(error == nil){
return directoryName;
}else{
return directoryName;
}
}else{
return directoryName;
}
}
//删除文件
+(void) removeFile:(NSString *)filePath{
NSError *error;
NSFileManager *fileManager = [[NSFileManager alloc] init];
if([fileManager fileExistsAtPath:filePath]){
[fileManager removeItemAtPath:filePath error:&error];
}
if(error){
NSLog(@"error = %@",error);
}
}
//删除目录
+(void) removeDirectory{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString *removeDirectoryPath = [documentsPath stringByAppendingPathComponent:[self fetchYesterdayBeforeDate]];
NSError *error;
NSFileManager *fileManager = [[NSFileManager alloc] init];
if([fileManager fileExistsAtPath:removeDirectoryPath]){
[fileManager removeItemAtPath:removeDirectoryPath error:&error];
}
if(error){
NSLog(@"error = %@",error);
}
}
@end
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由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于
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本文永久链接： https://www.gowhich.com/blog/260
版权声明
由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于 Gowhich博客（ https://www.gowhich.com ），版权所有，侵权必究。
本文永久链接： https://www.gowhich.com/blog/260