1.保存在user Document文件夾下丈秩，以讀取文件盯捌，寫入文件方式
2.在工程里手動創(chuàng)建一個.plist文件，把固定的內容寫入蘑秽，這個需要人工手動寫入(工程里只可讀取饺著，不可以寫入)
3.保存在user Document下，不過不需要讀寫文件肠牲，用系統(tǒng)的 NSUserDefaults 可以快速保存添加讀取刪除基本數據類型 這里記錄的是第1種幼衰，第2種就是創(chuàng)建一個plist文件，然后自己手動寫入數據缀雳，再用NSString *path = [[NSBundle mainBundle] pathForResource:@"xiaoxi" ofType:@"plist”];獲取到本地存儲的數據渡嚣。
1.寫入數據到plist文件
//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:@"xiaoxi.plist"];
//上面3句可以寫成這一句//
NSString *filePatch = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:@"xiaoxi.plist"];
// NSLog(@"------filepath---%@",filePatch);
/**
下面是我的plist路徑,在桌面空白處點擊一下，前往－按住option-資源庫-Developer-CoreSimulator-Devices......就按照下面路徑找到plist所在的位置
/Users/baiteng01/Library/Developer/CoreSimulator/Devices/92444384-5241-4934-B078-1A7241F1B687/data/Containers/Data/Application/73005382-D1FB-4BC2-BB4E-1FBC64284141/Documents/xiaoxi.plist
*/
//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);
2.對plist文件內容進行/刪除/修改/添加/寫入操作
//獲取plist文件的路徑
NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path1 = [pathArray objectAtIndex:0];
NSString *myPath = [path1 stringByAppendingPathComponent:@"xiaoxi.plist"];
//根據之前保存的容器類型讀取數據
//是數組就用數組來獲取數據肥印，是字典就用字典來獲取數據
//xiaoxi.plist文件
//NSMutableArray *dataArr = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
//xiaoxi.plist文件
NSMutableDictionary *dataDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];
//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"];
//修改成功以后识椰，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);
3.刪除plist文件
//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];
}
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