iOS plist 文件写入

一 .plist 文件的读写

//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 = [pathstringByAppendingPathComponent:@"column.plist"];

NSLog(@"%@",filePatch);

//写入数据到plist文件

NSMutableDictionary*dic1= [NSMutableDictionarydictionaryWithObjectsAndKeys:@"小小虎",@"name",@"5",@"age",@"boy",@"sex",nil];

NSMutableDictionary*dic2= [NSMutableDictionarydictionaryWithObjectsAndKeys:@"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];

[dataDicsetObject:dic1forKey:@"一年级"];

[dataDicsetObject:dic2forKey:@"二年级"];

//写入plist里面

[dataDicwriteToFile:filePatchatomically: YES];

//读取plist文件的内容

NSMutableDictionary*dataDictionary = [[NSMutableDictionaryalloc]initWithContentsOfFile: filePatch];

NSLog(@"---plist一开始保存时候的内容---%@",dataDictionary);

二 .对plist 文件进行修改

//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"];

[ddsetObject:@"我改名字了哦"forKey:@"name"];

[ddsetObject: @"我添加的新内容"forKey: @"content"];

[ddremoveObjectForKey: @"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: ddforKey:@"一年级"];

[dataDictionary  writeToFile: filePatchatomically: YES];

NSLog(@"---plist做过操作之后的字典里面内容---%@",dataDictionary);

三 .文件的删除

//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

BOOLbRet = [fileMgerfileExistsAtPath: xiaoXiPath];

if(bRet) {

NSError*err;

[fileMgerremoveItemAtPath: xiaoXiPatherror: &err];

}