将字典存储到沙盒中（文件名后缀.plist）
+ (void)saveData:(NSDictionary *)dictionary toFileName:(NSString *)fileName{
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documents = [array objectAtIndex:0];
NSString *documnetPath = [documents stringByAppendingPathComponent:fileName];
NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithDictionary:dictionary];
//去除空的value 否则不能写入到plist文件中去
for (NSString *key in [dic allKeys]) {
if ([[dic valueForKey:key] isEqual:[NSNull null]] || [dic valueForKey:key] == nil) {
[dic removeObjectForKey:key];
}
}
//将字典存入指定的本地文件
[dic writeToFile:documnetPath atomically:YES];
NSLog(@"沙盒文件路径：%@", documnetPath);
}
从沙盒中读取字典数据
+ (NSDictionary *)readDataFromFileName:(NSString *)fileName{
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documents = [array objectAtIndex:0];
NSString *documnetPath = [documents stringByAppendingPathComponent:fileName];
NSDictionary *userDic;
if([[NSFileManager defaultManager] fileExistsAtPath:documnetPath]){
userDic = [[NSDictionary alloc] initWithContentsOfFile:documnetPath];
}else{
return nil;
}
return userDic;
}
删除沙盒文件
+ (void)deleteDataWithFileName:(NSString *)fileName{
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documents = [array objectAtIndex:0];
NSString *documnetPath = [documents stringByAppendingPathComponent:fileName];
[[NSFileManager defaultManager] fileExistsAtPath:documnetPath];
}
