iOS--对plist文件进行读写,增删改查

//获取路径对象
NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [pathArray objectAtIndex:0];
//获取文件的完整路径
NSString *filePatch = [path stringByAppendingPathComponent:@"column.plist"];

NSLog(@"%@",filePatch);

//写入数据到plist文件
NSMutableDictionary *dic1 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"小小虎",@"name",@"5",@"age",@"boy",@"sex",nil];

NSMutableDictionary *dic2 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"小小兮",@"name",@"6",@"age",@"girl",@"sex",nil];

//将上面2个小字典保存到大字典里面
NSMutableDictionary *dataDic = [NSMutableDictionary dictionary];
[dataDic setObject:dic1 forKey:@"一年级"];
[dataDic setObject:dic2 forKey:@"二年级"];
//写入plist里面
[dataDic writeToFile:filePatch atomically:YES];

//读取plist文件的内容
NSMutableDictionary *dataDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:filePatch];
NSLog(@"---plist一开始保存时候的内容---%@",dataDictionary);

//修改字典里面的内容,先按照结构取到你想修改内容的小字典
NSMutableDictionary *dd = [dataDictionary objectForKey:@"一年级"];
[dd setObject:@"我改名字了哦" forKey:@"name"];
[dd setObject:@"我添加的新内容" forKey:@"content"];
[dd removeObjectForKey:@"age"];

//修改成功以后，将这个小字典重新添加到大字典里面
[dataDictionary setObject:dd forKey:@"一年级"];

[dataDictionary writeToFile:filePatch atomically:YES];
NSLog(@"---plist做过操作之后的字典里面内容---%@",dataDictionary);

//清除plist文件，可以根据我上面讲的方式进去本地查看plist文件是否被清除
NSFileManager *fileMger = [NSFileManager defaultManager];

NSString *xiaoXiPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:@"xiaoxi.plist"];

//如果文件路径存在的话
BOOL bRet = [fileMger fileExistsAtPath:xiaoXiPath];

if (bRet) {

NSError *err;

[fileMger removeItemAtPath:xiaoXiPath error:&err];
}