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#import "RootViewController.h"@interface
RootViewController ()@end@implementation
RootViewController{ UILabel *txtInteger; UILabel *txtFloat; UILabel *txtDouble; UILabel *txtNSString; UILabel *txtNSDate; UILabel *txtNSArray; UILabel *txtNSDictionary;} |
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- (void)viewDidLoad{ [super
viewDidLoad]; // Do any additional setup after loading the view. [self
creatLable]; [self
creatclearbtn]; [self
saveNSUserDefaults]; [self
readNSUserDefaults];}//保存数据到NSUserDefaults-(void)saveNSUserDefaults{ int
myInteger = 1000; float
myFloat = 60.0f; double
myDouble = 30.0; NSString
*myString = @"我的字符"; NSDate
*myDate = [NSDate
date]; NSArray
*myArray = [NSArray
arrayWithObjects:@"hello", @"world",@"one",@"dream", nil]; NSDictionary
*myDictionary = [NSDictionary
dictionaryWithObjects:[NSArray
arrayWithObjects:@"enuo", @"20", nil] forKeys:[NSArray
arrayWithObjects:@"name", @"age", nil]]; //将上述数据全部存储到NSUserDefaults中 NSUserDefaults
*userDefaults = [NSUserDefaults
standardUserDefaults]; //存储时，除NSNumber类型使用对应的类型意外，其他的都是使用setObject:forKey: [userDefaults setInteger:myInteger forKey:@"myInteger"]; [userDefaults setFloat:myFloat forKey:@"myFloat"]; [userDefaults setDouble:myDouble forKey:@"myDouble"]; [userDefaults setObject:myString forKey:@"myString11"]; [userDefaults setObject:myDate forKey:@"myDate"]; [userDefaults setObject:myArray forKey:@"myArray"]; [userDefaults setObject:myDictionary forKey:@"myDictionary"]; //这里建议同步存储到磁盘中，但是不是必须的 [userDefaults synchronize]; }//从NSUserDefaults中读取数据-(void)readNSUserDefaults{ NSUserDefaults
*userDefaultes = [NSUserDefaults
standardUserDefaults]; //读取数据到各个label中 //读取整型int类型的数据 NSInteger
myInteger = [userDefaultes integerForKey:@"myInteger"]; txtInteger.text = [NSString
stringWithFormat:@"整形:%d",myInteger]; //读取浮点型float类型的数据 float
myFloat = [userDefaultes floatForKey:@"myFloat"]; txtFloat.text = [NSString
stringWithFormat:@"浮点型:%f",myFloat]; //读取double类型的数据 double
myDouble = [userDefaultes doubleForKey:@"myDouble"]; txtDouble.text = [NSString
stringWithFormat:@"%f",myDouble]; //读取NSString类型的数据 NSString
*myString = [userDefaultes stringForKey:@"myString11"]; txtNSString.text = myString; //读取NSDate日期类型的数据 NSDate
*myDate = [userDefaultes valueForKey:@"myDate"]; NSDateFormatter
*df = [[NSDateFormatter
alloc] init]; [df setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; txtNSDate.text = [NSString
stringWithFormat:@"日期:%@",[df stringFromDate:myDate]]; //读取数组NSArray类型的数据 NSArray
*myArray = [userDefaultes arrayForKey:@"myArray"]; NSString
*myArrayString = [[NSString
alloc] init]; for(NSString
*str in myArray) { NSLog(@"str= %@",str); myArrayString = [NSString
stringWithFormat:@"%@ %@", myArrayString, str]; [myArrayString stringByAppendingString:str]; // [myArrayString stringByAppendingFormat:@"%@",str]; NSLog(@"myArrayString=%@",myArrayString); } txtNSArray.text = myArrayString; //读取字典类型NSDictionary类型的数据 NSDictionary
*myDictionary = [userDefaultes dictionaryForKey:@"myDictionary"]; NSString
*myDicString = [NSString
stringWithFormat:@"name:%@, age:%d",[myDictionary valueForKey:@"name"], [[myDictionary valueForKey:@"age"] integerValue]]; txtNSDictionary.text = myDicString;}//清除数据UserDefaultes-(void)ClearUserDefaultes{ NSString
*appDomain=[[NSBundle
mainBundle]bundleIdentifier]; [[NSUserDefaults
standardUserDefaults]removePersistentDomainForName:appDomain]; [self
readNSUserDefaults];}//清除按钮-(void)creatclearbtn{ UIButton *btn=[UIButton buttonWithType:UIButtonTypeRoundedRect]; btn.frame=CGRectMake(100, 400, 100, 30); [btn setTitle:@"清除"
forState:UIControlStateNormal]; btn.backgroundColor=[UIColor yellowColor]; [self.view addSubview:btn]; [btn addTarget:self
action:@selector(ClearUserDefaultes) forControlEvents:UIControlEventTouchDown];}//创建Label-(void)creatLable{ txtInteger=[[UILabel alloc]initWithFrame:CGRectMake(0, 40, 200, 30)]; txtInteger.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtInteger]; txtFloat=[[UILabel alloc]initWithFrame:CGRectMake(0,80, 200, 30)]; txtFloat.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtFloat]; txtDouble=[[UILabel alloc]initWithFrame:CGRectMake(0, 120, 200, 30)]; txtDouble.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtDouble]; txtNSString=[[UILabel alloc]initWithFrame:CGRectMake(0, 160, 200, 30)]; txtNSString.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtNSString]; txtNSDate=[[UILabel alloc]initWithFrame:CGRectMake(0, 200, 200, 30)]; txtNSDate.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtNSDate]; txtNSArray=[[UILabel alloc]initWithFrame:CGRectMake(0, 240, 200, 30)]; txtNSArray.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtNSArray]; txtNSDictionary=[[UILabel alloc]initWithFrame:CGRectMake(0, 280, 200, 30)]; txtNSDictionary.backgroundColor=[UIColor brownColor]; [self.view addSubview:txtNSDictionary];} |
UserDefaultes 数据存储使用,布布扣,bubuko.com
原文：http://www.cnblogs.com/hl666/p/3709698.html