iOS从plist文件里面读取内容

NSString*plistPath = [[NSBundle mainBundle] pathForResource:@"book"ofType:@"plist"];

NSDictionary *dictionary =[[NSDictionary alloc] initWithContentsOfFile:plistPath];
NSString *book = [dictionaryobjectForKey:bookTitle];

[textView setText:book];
-(void) initialize
{

NSUserDefaults = [NSUserDefaultsstandardUserDefaults];

NSDictionary *appDefaults =[NSDictionary dictionaryWithObject:@"YES"forKey:@"DeleteBackup"];

[defaultsregisterDefaults:appDefaults];

}
获取Documents的目录：
NSArray *paths = NSSearchPathForDictionariesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

NSString*documentsDirectory = [paths objectAtIndex:0];
NSString *filename= [documentsDirectory stringByAppendingPathComponent:@"theFile.txt"];
获取tmp目录：
NSString *tempPath= NSTemporaryDirectory();
NSString *tempFile= [tempPath stringByAppendingPathComponent:@"tempFile.txt"];

[[NSUserDefaultsstandardUserDefaults] setObject:data forKey:@"someKey"];

[[NSUserDefaultsstandardUserDefaults] objectForKey:aKey];