iOS儲存的幾種方式
1.寫檔案
NSData *dat = [[NSDataalloc]initWithContentsOfURL:[NSURLURLWithString:imageUrl]];
NSString *fullPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:[NSStringstringWithFormat:@"DocumentDataF"]];
[dat writeToFile:fullPath atomically:NO
UIImage *img = [UIImage imageWithContentsOfFile:fullPath];
2.物件序列化儲存2.1匯入第三方MJExtension檔案
2.2將你要存入的模型.m檔案里加上
MJCodingImplementation
2.3使用下列方法存取
儲存陣列(自定義物件)到NSUserDefaults
+ (void)userDefaultsArchiveCustomArray:(NSMutableArray *)array withKey:(NSString *)key{
NSData *data = [NSKeyedArchiver
NSUserDefaults *userDefaults = [NSUserDefaultsstandardUserDefaults];
[userDefaults setObject:data forKey:key];
[userDefaults synchronize];
}
從NSUserDefaults解析出陣列(自定義物件)
+ (NSMutableArray *)userDefaultsUnarchiveArrayWithKey:(NSString *)key{
NSUserDefaults *userDefaults = [
NSData *data = [userDefaults objectForKey:key];
NSMutableArray *array = (NSMutableArray *)[NSKeyedUnarchiverunarchiveObjectWithData:data];
return array;
}
3.資料庫（sqlite）
匯入FMDataBase檔案
實現資料酷的增刪改查
4.圖片快取
匯入SDWebImage檔案