iOS遇到的細節問題

1.爲UILable添加點擊手勢

    

    UILabel *text01 = [[UILabel alloc]initWithFrame:CGRectMake(0, mView.height/5+1, mView.width, mView.height/5)];

    text01.text = @"還沒有賬號？點擊註冊吧！";

    text01.textColor = [kTabBarColor];

    text01.textAlignment = NSTextAlignmentCenter;

    text01.font = [UIFont systemFontOfSize:14];

   text01.userInteractionEnabled = YES;／／重要，很容易被遺忘的一句話

    UITapGestureRecognizer *tapToRegister = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(toRegister:)];

    tapToRegister.numberOfTouchesRequired = 1;//只處理一個手指的觸碰事件

    [text01 addGestureRecognizer:tapToRegister];

    [mView addSubview:text01];

#pragma mark -點擊，跳轉到註冊頁面

-(void)toRegister:(UITapGestureRecognizer *)gesture{

    NSLog(@"go to register...");

}

2.如何製作圓形圖片UIImageView，並添加白色邊框

    UIImageView *mHeadImg = [[UIImageView alloc]initWithFrame:CGRectMake(kScreen_width/2-35, kScreen_height/5-10, 70, 70)];

    mHeadImg.image = [UIImage imageNamed:@"圓形人物上傳頭像"];

    mHeadImg.layer.borderColor = [[UIColor whiteColor] CGColor];

    mHeadImg.layer.borderWidth = 2.0f;

    mHeadImg.layer.cornerRadius = 35;

    [self.view addSubview:mHeadImg];

效果圖：

3.如何實現這種效果：

代碼如下：

self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:0.0f/255.0 green:194.0f/255.0 blue:194.0f/255.0 alpha:1.0];

[self.navigationController.navigationBar setTitleTextAttributes:

     @{NSFontAttributeName:[UIFont systemFontOfSize:18],

       NSForegroundColorAttributeName:[UIColor whiteColor]}];

self.navigationItem.title = @"設置";

self.view.backgroundColor = [UIColor colorWithRed:235/255.0 green:236/255.0 blue:237/255.0 alpha:1];