切换问题 - 只有一个选项可见

kee*_*een 7 android switch-statement

我想在Android应用程序中使用switch.我尝试过,但主要问题是

  • 如果我选择了ON,它将不会显示文本.
  • 如果我选择了OFF,它将不会显示在文本上.

不显示关闭文本但我们可以通过单击开关的黑色区域来选择关闭.

<Switch android:id="@+id/mySwitch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="48dp"
android:layout_marginTop="26dp"
android:height="50dp"
android:text="ON OFF"
android:textSize="20sp"
android:switchMinWidth="50sp"
android:switchPadding="50sp"/>
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论国家

在此输入图像描述

关闭状态

在此输入图像描述

我如何能同时显示两个文本?我可以更改状态ON/OFF的开关文本吗?

任何帮助,将不胜感激.

提前致谢.

Jus*_*tin 0

这是我的解决方案,它创建一个自定义小部件来模仿 Switch 控件。我正在使用 Xamarin,但此代码可以轻松转换为 Java。

SwitchImageView.cs:

public class SwitchImageView : RelativeLayout {
        private View view;

        private bool isChecked;
        private int imageResourceIdOn = Resource.Drawable.switch_on;
        private int imageResourceIdOff = Resource.Drawable.switch_off;

        public SwitchImageView(Context context): base(context) {
            Init ();
        }

        public SwitchImageView(Context context, IAttributeSet attrs) : base(context, attrs) {
            Init ();
        }

        public SwitchImageView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle) {
            Init ();
        }

        private void Init () {
            var layoutInflater = (LayoutInflater)ApplicationContext.Activity.GetSystemService (Context.LayoutInflaterService);
            layoutInflater.Inflate (RPR.Mobile.Resource.Layout.SwitchImageView, this, true);

            this.Click += (object sender, EventArgs e) => {
                Checked = !Checked;
            };
        }

        public int ImageResourceIdOn { 
            get {
                return imageResourceIdOn;
            }
            set {
                imageResourceIdOn = value;
                if (isChecked) {
                    this.SetBackgroundResource (value);
                }
            }
        }

        public int ImageResourceIdOff { 
            get {
                return imageResourceIdOff;
            }
            set {
                imageResourceIdOff = value;
                if (!isChecked) {
                    this.SetBackgroundResource (value);
                }
            }
        }

        public string TextOn { 
            get {
                return this.FindViewById <TextView> (Resource.Id.switch_on_text).Text;
            }
            set {
                this.FindViewById <TextView> (Resource.Id.switch_on_text).Text = value;
            }
        }

        public string TextOff { 
            get {
                return this.FindViewById <TextView> (Resource.Id.switch_off_text).Text;
            }
            set {
                this.FindViewById <TextView> (Resource.Id.switch_off_text).Text = value;
            }
        }

        public bool Checked { 
            get {
                return isChecked;
            }
            set {
                isChecked = value;
                this.SetBackgroundResource (value ? ImageResourceIdOn : ImageResourceIdOff);
                this.FindViewById <TextView> (Resource.Id.switch_on_text).SetTextColor (value ? Color.White : Color.Black);
                this.FindViewById <TextView> (Resource.Id.switch_off_text).SetTextColor (value ? Color.Black : Color.White);
                if (CheckedChange != null) {
                    CheckedChange (this, value);
                }
            }
        }

        public event EventHandler<bool> CheckedChange;
    }
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SwitchImageView.axml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/switch_container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <View
        android:id="@+id/strut"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:visibility="invisible"
        android:layout_centerInParent="true" />
    <TextView
        android:id="@+id/switch_off_text"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:textColor="@color/black"
        android:text="On"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:paddingLeft="10dp"
        android:paddingTop="3dp" />
    <TextView
        android:id="@+id/switch_on_text"
        android:layout_toRightOf="@+id/strut"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:textColor="@color/white"
        android:text="Off"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:paddingRight="5dp"
        android:paddingLeft="10dp"
        android:paddingTop="3dp" />
</RelativeLayout>
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