用户名和密码登陆界面的代码.doc

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1、-(void)viewDidLoad{[superviewDidLoad];//加载窗口的时候把从文件里读出用户名。NSString*filePath=[selfdocumentsPath:@"user.txt"];//读出文件存到数组username中NSArray*username=[NSArrayarrayWithContentsOfFile:filePath];self.TXF1.text=[usernameobjectAtIndex:0];self.Txtpwd.text=[usernameobjectAtIndex:1];//

2、文本显示设为安全。星号self.Txtpwd.secureTextEntry=YES;}//登陆验证-(IBAction)loginpage:(id)sender{NSLog(@"login...");NSString*filePath=[selfdocumentsPath:@"user.txt"];//从user这个文件里读出用户名和密码是否与输入的相同NSArray*username=[NSArrayarrayWithContentsOfFile:filePath];if([TXF1.textisEqualToString:[us

3、ernameobjectAtIndex:0]]&&[Txtpwd.textisEqualToString:[usernameobjectAtIndex:1]]){//如果验证正确，则重新打开一个窗口if(self.loginhome==nil){NSLog(@"loginhome");loginhome*homepage=[[loginhomealloc]initWithNibName:@"loginhome"bundle:nil];self.loginhome=[homepageautorelease];[self.viewaddSub

4、view:self.loginhome.view];}else{[self.viewaddSubview:self.loginhome.view];}NSLog(@"登陆成功！");}else{NSLog(@"用户名或密码错误！");judgelogin=[[UIAlertViewalloc]initWithTitle:@"提示"message:@"用户名或密码错误！"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"确定",nil];[judgeloginshow];

5、[judgeloginrelease];}}//读程序目录而准备-(NSString*)bundlePath:(NSString*)fileName{return[[[NSBundlemainBundle]bundlePath]stringByAppendingPathComponent:fileName];}-(NSString*)documentsPath:(NSString*)fileName{NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,

6、NSUserDomainMask,YES);NSString*documentsDirectory=[pathsobjectAtIndex:0];return[documentsDirectorystringByAppendingPathComponent:fileName];}-(NSString*)documentsPath{NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);NSString*docum

7、entsDirectory=[pathsobjectAtIndex:0];returndocumentsDirectory;}