Custom Android switch track 'animation'

问题:

I've created a basic custom Switch, as defined below.

<Switch
        android:id="@+id/availSwitch"
        android:layout_width="wrap_content"
        android:switchMinWidth="110dp"
        android:layout_height="wrap_content"
        android:track="@drawable/switch_track"
        android:thumb="@drawable/thumb"/>

The @drawable/thumb is a simple PNG which works fine.

The @drawable/switch_track is defined below. @drawable/trackon and @drawable/trackoff are PNG's.

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="false" android:drawable="@drawable/trackoff" />
    <item android:state_checked="true"  android:drawable="@drawable/trackon" />
    <item                               android:drawable="@drawable/trackoff" />

</selector>

This switch looks and works as intended for the most part, but is there some way to 'animate' the track as the thumb travels over it on user drag? Either fade between checked and unchecked, or preferably change 'behind' the thumb.

The current behaviour is shown below.

回答1:

There was a time I was also looking for the same when I needed a toggle button functionality similar to native iOS which can be dragged to on/off for one of my projects. At that time I searched hard and I found this library.

https://github.com/pellucide/Android-Switch-Demo-pre-4.0

So hope this is what you are looking for too.

回答2:

A Switch is a two-state toggle switch widget that can select between two options. The user may drag the "thumb" back and forth to choose the selected option, or simply tap to toggle as if it were a checkbox. The text property controls the text displayed in the label for the switch, whereas the off and on text controls the text on the thumb .

For this requirement you need to customize your Switch Button Functionality

You can visit for demo

1. Slide Toggle for Android

2. Android-Switch-Demo-pre-4.0

3. Custom Toggle Button for Android Applications

You need to understand below two lines .

        android:thumb="@drawable/customswitchselector"
        android:track="@drawable/custom_track"

It has two tag: android:thumb and android:track.Thumb will draw the actual look when we swipe or change the status .

回答3:

You need to make Toggle Button custom

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/darkGray"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.gisinc.androidexamples.myapplication.MyActivity">

    <com.gisinc.androidexamples.androidtogglebutton.SettingsToggle
        xmlns:widget="http://schemas.android.com/apk/res-auto"
        android:id="@+id/settings1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        widget:prefName="useMyLocation"
        widget:text="Use My Location" />

</RelativeLayout>

See this