//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(shù)據(jù)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(nèi)容 
  NSMutableDictionary *dataDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:filePatch]; 
  NSLog(@"---plist一開始保存時候的內(nèi)容---%@",dataDictionary); 

//修改字典里面的內(nèi)容,先按照結(jié)構(gòu)取到你想修改內(nèi)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(nèi)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(nèi)容---%@",dataDictionary); 

//清除plist文件，可以根據(jù)我上面講的方式進(jìn)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]; 
  }