plist文件

?

　　Plist文件

　　应用程序特定的plist文件可以被保存到app bundle的Resources文件夹。当应用程序运行起来的时候，就会去检查是不是有一个plist文件在用户的Documents文件夹下。假如没有的话，就会从app bundle目录下拷贝过来。

// Look in Documents for an existing plist file

NSArray *paths = NSSearchPathForDirectoriesInDomains(

????NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

myPlistPath = [documentsDirectory stringByAppendingPathComponent:?

????[NSString stringWithFormat: @"%@.plist", plistName] ];

[myPlistPath retain];

?

// If it's not there, copy it from the bundle

NSFileManager *fileManger = [NSFileManager defaultManager];

if ( ![fileManger fileExistsAtPath:myPlistPath] ) {

????NSString *pathToSettingsInBundle = [[NSBundle mainBundle]?

????????pathForResource:plistName ofType:@"plist"];

}????????

?

　　现在我们就可以从Documents文件夹去读plist文件了。

NSArray *paths = NSSearchPathForDirectoriesInDomains(

????NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectoryPath = [paths objectAtIndex:0];

NSString *path = [documentsDirectoryPath?

????stringByAppendingPathComponent:@"myApp.plist"];

NSMutableDictionary *plist = [NSDictionary dictionaryWithContentsOfFile: path];

?

　　Now read and set key/values

myKey = (int)[[plist valueForKey:@"myKey"] intValue];

myKey2 = (bool)[[plist valueForKey:@"myKey2"] boolValue];

?

[plist setValue:myKey forKey:@"myKey"];

[plist writeToFile:path atomically:YES];