plist文件Boolean类型读写方法

http://blog.csdn.net/a6472953/article/details/7659505   转

1、读取plist文件中的Boolean类型的字段值时，要先把它转为NSNumber类型，然后通过NSNumber的boolValue方法来读取该值。例子如下：

bool IsTrue=[(NSNumber*)[dic objectForKey:@"IsTrue"]boolValue];

2、写入时也是类似：

Boolean setting =NO;

NSNumber *testBoolean =[[NSNumber alloc]initWithBool:setting];

然后，才进行 plist文件的读写

3、读写plist文件

//下面函数主要是 获取的UISwitch(即switchView，在IB中进行了关联)的值，将其当前的值保存到plist文件中，以便程序下次启动时使用；通过这种方式可以保存和读取程序的一些配 置信息

- (void)viewDidLoad

{

[superviewDidLoad];

#if 0

//1、创建plist文件

//获取沙盒路径，创建plist文件，因为系统的list文件是只读属性，在沙盒中的文件才是可读和可写的，必须在沙盒中创建plist文件

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

NSString *path=[paths     objectAtIndex:0];

NSString *filename=[path stringByAppendingPathComponent:@"personal.plist"];

//创建一个NSDictionary

NSMutableDictionary *dictionary =[[NSMutableDictionary alloc]init];

//创建3个添加到dictionary中的变量，并对其赋值

NSString *testString = [[NSString alloc]initWithString:@"fistValue1111"];

NSNumber  *testInt = [[NSNumber alloc]initWithInt:5];

NSNumber *testBoolean =[[NSNumber alloc]initWithBool:YES];

//将3个变量添加到dictionary中

[dictionary setValue:testString forKey:@"String test"];

[dictionary setValue:testInt forKey:@"INteger test1"];

[dictionary setValue:testBoolean forKey:@"Boolean test"];

//将dictionary中的数据写入plist文件中

[dictionary writeToFile:filename atomically:YES];

NSLog(@"%@",filename);

#endif

/******************************************************************/

//2、读取plist文件*获取某一个key的对应的valuse

//读取plist文件，获取UISwitch的值，根据值来设置UISwitvch的显示

//获取沙盒路径，创建plist文件，因为系统的list文件是只读属性，在沙盒中的文件才是可读和可写的，必须在沙盒中创建plist文件

NSArray *readPaths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

NSString *readPath=[readPaths     objectAtIndex:0];

NSString *plistPath=[readPathstringByAppendingPathComponent:@"personal.plist"];

//读取到一个NSDictionary

NSDictionary *dictionary1 = [[NSDictionaryalloc]initWithContentsOfFile:plistPath];

//读取plist文件中的Boolean类型的字段值时，要先把它转为NSNumber类型，然后通过NSNumber的boolValue方法来读取该值。例子如下：

bool switchFlag=[(NSNumber*)[dictionary1objectForKey:@"Boolean test"]boolValue];

//Boolean switchFlag = [dictionary1 objectForKey:@"Boolean test"];

[self.switchViewaddTarget:selfaction:@selector(switchViewChange:)forControlEvents:UIControlEventValueChanged];

if(switchFlag)

{

NSLog(@"switch的值为 NO");

switchView.on = YES;

//switchView.on

}

else//switchFlag=NO

{

NSLog(@"switch的值为 YES");

switchView.on = NO;

}

//读取到一个NSArray

// NSArray *array = [[NSArray alloc] initWithContentsOfFile:plistPath];

// Do any additional setup after loading the view from its nib.

}

- (void)viewDidUnload

{

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

-(void)switchViewChange:(id)sender

{

UISwitch *theSwitch =(UISwitch *)sender;

NSLog(@"switch do nothing");

Boolean setting = theSwitch.on;

if(setting == NO)

{

NSLog(@"current setting = NO");

}

else if(setting == YES)

{

NSLog(@"current setting = YES");

}

//获取沙盒路径，创建plist文件，因为系统的list文件是只读属性，在沙盒中的文件才是可读和可写的，必须在沙盒中创建plist文件

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

NSString *path=[paths     objectAtIndex:0];

NSString *plistPath=[pathstringByAppendingPathComponent:@"personal.plist"];

NSMutableDictionary *dictionary =[[NSMutableDictionaryalloc]initWithContentsOfFile:plistPath];

NSNumber *testBoolean =[[NSNumber alloc]initWithBool:setting];

[dictionary setValue:testBoolean forKey:@"Boolean test"];

[dictionary writeToFile:plistPath atomically:YES];

}