Question

我似乎无法增加轨道的厚度。一直在尝试其他建议，并在文档中寻找此选项，但似乎不起作用，有人知道为什么吗？：（

class factionButton: UISlider {
var factionSlider = UISlider() 

func factionBalanceSlider(){
    factionSlider.frame = CGRect(x: 15, y: 542, width: 386, height: 57)
    factionSlider.minimumValueImage = #imageLiteral(resourceName: "Alliance Slider")
    factionSlider.maximumValueImage = #imageLiteral(resourceName: "Horde Slider")
    factionSlider.setThumbImage(#imageLiteral(resourceName: "Thumb Image"), for: .normal)
    factionSlider.minimumTrackTintColor = UIColor(red:0.08, green:0.33, blue:0.69, alpha:0.8)
    factionSlider.maximumTrackTintColor = UIColor(red:1.00, green:0.00, blue:0.00, alpha:0.59)

    factionSlider.setValue(0.5, animated: true)
    factionSlider.isContinuous = true
    factionSlider.addTarget(self, action: #selector(recordFactionBalance(sender:)) , for: .valueChanged)
}

func getSlider() -> UISlider {
    return factionSlider
}

override func trackRect(forBounds bounds: CGRect) -> CGRect {
    let customBounds = CGRect(x: 16, y: 21, width: 343, height: 7)
    super.trackRect(forBounds: customBounds)
    return customBounds
}

Answer 1

您应该首先从超类获取当前边界，然后只需更改高度：

override func trackRect(forBounds bounds: CGRect) -> CGRect {
    var customBounds = super.trackRect(forBounds: bounds)
    customBounds.size.height = 7
    return customBounds
}

Answer 2

如许多其他answers所述，您可以通过如下创建自定义滑块来更改高度，

class CustomSlider: UISlider {

    override func trackRect(forBounds bounds: CGRect) -> CGRect {
        var rect = super.trackRect(forBounds: bounds)
        rect.size.height = 7
        return rect
    }
}

但是在您的特定情况下，您看不到更改，因为您的实现不允许factionSlider使用overridden trackRect。要使用它，您需要将其更改为CustomSlider，如下所示，

class FactionButton: UISlider {
    var factionSlider = CustomSlider() 

    func factionBalanceSlider(){
        factionSlider.frame = CGRect(x: 15, y: 542, width: 386, height: 57)
        factionSlider.minimumValueImage = #imageLiteral(resourceName: "Alliance Slider")
        factionSlider.maximumValueImage = #imageLiteral(resourceName: "Horde Slider")
        factionSlider.setThumbImage(#imageLiteral(resourceName: "Thumb Image"), for: .normal)
        factionSlider.minimumTrackTintColor = UIColor(red:0.08, green:0.33, blue:0.69, alpha:0.8)
        factionSlider.maximumTrackTintColor = UIColor(red:1.00, green:0.00, blue:0.00, alpha:0.59)

        factionSlider.setValue(0.5, animated: true)
        factionSlider.isContinuous = true
        factionSlider.addTarget(self, action: #selector(recordFactionBalance(sender:)) , for: .valueChanged)
    }

    func getSlider() -> UISlider {
        return factionSlider
    }
}

注意，在Swift中，class的名称应以我在上面更新的大写字母开头。其次，我认为FactionButton不应该是subclass的{{1}}。

Answer 3

设置矩形尺寸会将滑块仅扩展到底部。因此应重新计算原点以使滑块居中。

@Entity
@Table(name="users")
public class Users {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="id")
    private int id; 

    @Column(name="first_name")
    private String firstName;

    @Column(name="last_name")
    private String lastName;

    @Column(name="email")
    private String email;

    @Column(name="password")
    private String password;

    @Column(name="active")
    private int active;

    @OneToMany(cascade=CascadeType.ALL, 
               fetch=FetchType.EAGER
               )
    @JoinColumn(name="user_id")
    private Set<Role> roles;

    public Users() {}

    public Users(Users user) {
        this.id = user.id;
        this.firstName = user.firstName;
        this.lastName = user.lastName;
        this.email = user.email;
        this.password = user.password;
        this.active = user.active;
        this.roles = user.roles;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getActive() {
        return active;
    }

    public void setActive(int active) {
        this.active = active;
    }

    public Set<Role> getRoles() {
        return roles;
    }

    public void setRoles(Set<Role> roles) {
        this.roles = roles;
    }

}

Answer 4

我是通过添加这个来实现的

1.

class CustomSlider: UISlider {
    
    override func trackRect(forBounds bounds: CGRect) -> CGRect {
        let point = CGPoint(x: bounds.minX, y: bounds.midY)
        return CGRect(origin: point, size: CGSize(width: bounds.width, height: 10)) //this height is the thickness 
    }
    
}

storyboard - 将 UISlider 类更改为我的 CustomSlider

仅供像我这样的新手使用.. 改变颜色在这里:)

UISlider轨道的厚度没有增加

4 个答案: