数据持久化,常见4种:归档,plist文件,sqlite,coreData.今天复习的是plist文件读写.
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//// ViewController.m// Test_Plist//// Created by lidongbo on 14/10/30.// Copyright (c) 2014年 lidongbo. All rights reserved.//#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. /* 读取plist文件的内容. */ NSString * path = [[NSBundle mainBundle] pathForResource:@"Person" ofType:@"plist"]; NSMutableDictionary * data = [[NSMutableDictionary alloc] initWithContentsOfFile:path]; NSLog(@"%@",data); /* 获取Document文件夹中plist文件的路径 */ NSMutableArray * mArr = [[NSMutableArray alloc] initWithObjects:@"英语",@"数据",@"法语",@"日语",@"德语", nil]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString * plistPath = [paths objectAtIndex:0]; NSLog(@"%@",plistPath); // NSString * fileName = [plistPath stringByAppendingString:@"/Person.plist"]; NSString * fileName = [plistPath stringByAppendingPathComponent:@"Person.plist"]; /* 赋值 */ [data setObject:mArr forKey:@"kemu"]; [data setObject:@"14" forKey:@"age"]; /* plist文件写入 */ [data writeToFile:fileName atomically:YES]; NSMutableDictionary * data1 = [[NSMutableDictionary alloc] initWithContentsOfFile:fileName]; NSLog(@"%@",data1); /* plist文件可以多次写入. */ NSMutableArray * mmArr = [[NSMutableArray alloc] initWithObjects:@"1",@"2",@"3", nil]; [data setObject:mmArr forKey:@"kemu"]; [data writeToFile:fileName atomically:YES]; NSMutableDictionary * data2 = [[NSMutableDictionary alloc] initWithContentsOfFile:fileName]; NSLog(@"______%@",data2); }- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end |