//獲取路徑對象   NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);   NSString *path = [pathArray objectAtIndex:0];   //獲取文件的完整路徑   NSString *filePatch = [path stringByAppendingPathComponent:@"column.plist"];      NSLog(@"%@",filePatch);      //寫入數據到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];      //將上面2個小字典保存到大字典里面   NSMutableDictionary *dataDic = [NSMutableDictionary dictionary];   [dataDic setObject:dic1 forKey:@"一年級"];   [dataDic setObject:dic2 forKey:@"二年級"];   //寫入plist里面   [dataDic writeToFile:filePatch atomically:YES];         //讀取plist文件的內容   NSMutableDictionary *dataDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:filePatch];   NSLog(@"---plist一開始保存時候的內容---%@",dataDictionary); 

//修改字典里面的內容,先按照結構取到你想修改內容的小字典   NSMutableDictionary *dd = [dataDictionary objectForKey:@"一年級"];   [dd setObject:@"我改名字了哦" forKey:@"name"];   [dd setObject:@"我添加的新內容" forKey:@"content"];   [dd removeObjectForKey:@"age"];      //修改成功以后，將這個小字典重新添加到大字典里面   [dataDictionary setObject:dd forKey:@"一年級"];      [dataDictionary writeToFile:filePatch atomically:YES];   NSLog(@"---plist做過操作之后的字典里面內容---%@",dataDictionary); 

//清除plist文件，可以根據我上面講的方式進去本地查看plist文件是否被清除   NSFileManager *fileMger = [NSFileManager defaultManager];       NSString *xiaoXiPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:@"xiaoxi.plist"];       //如果文件路徑存在的話   BOOL bRet = [fileMger fileExistsAtPath:xiaoXiPath];       if (bRet) {           NSError *err;           [fileMger removeItemAtPath:xiaoXiPath error:&err];   }