RecyclerView中的滚动条颜色

我如何更改recyclerView中滚动条的颜色?

我有滚动条,但我想改变它的颜色。 我的recyclerView是这样的:

<android.support.v7.widget.RecyclerView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/recyclerView" android:layout_below="@id/my_toolbar" android:layout_above="@+id/progressBar" android:scrollbars="vertical" /> 

Solutions Collecting From Web of "RecyclerView中的滚动条颜色"

您可以在您的Recyclerview中包含以下代码行来做到这一点

android:scrollbarThumbVertical="@drawable/yoursdrawablefile

在我的情况下,可绘制的文件是:

 <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <gradient android:startColor="#000" android:endColor="#000" android:angle="45"/> <corners android:radius="6dp" /> </shape> 

如果你想进一步的风格滚动条,创build两个可绘制的资源文件在您的可绘制文件夹中1. scrollbar_track和2. scrollbar_thumb

scrollbar_track.xml

 <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" > <gradient android:angle="0" android:endColor="#9BA3C5" android:startColor="#8388A4" /> <corners android:radius="6dp" /> </shape> 

scrollbar_thumb.xml

 <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" > <gradient android:angle="0" android:endColor="#b20111" android:startColor="#cf1d2d" /> <corners android:radius="6dp" /> </shape> 

现在,在styles.xml文件中创build一个名为scrollbar_style的样式,如下所示:

 <style name="scrollbar_style"> <item name="android:scrollbarAlwaysDrawVerticalTrack">true</item> <item name="android:scrollbarStyle">outsideOverlay</item> <item name="android:scrollbars">vertical</item> <item name="android:fadeScrollbars">true</item> <item name="android:scrollbarThumbVertical">@drawable/scrollbar_thumb</item> <item name="android:scrollbarTrackVertical">@drawable/scrollbar_track</item> <item name="android:scrollbarSize">8dp</item> <item name="android:scrollbarFadeDuration">800</item> <item name="android:scrollbarDefaultDelayBeforeFade">500</item> </style> 

最后,要将此样式应用于回收站视图中的滚动条,请添加
style="@style/scrollbar_style"
到您的回收站。

在你的情况下:

 <android.support.v7.widget.RecyclerView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/recyclerView" style="@style/scrollbar_style" android:layout_below="@id/my_toolbar" android:layout_above="@+id/progressBar" android:scrollbars="vertical" /> 

如果你需要在运行时改变颜色,就是这样。

 import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.PorterDuff; import android.graphics.drawable.Drawable; import android.support.annotation.ColorInt; import android.support.v7.widget.RecyclerView; import android.util.AttributeSet; /** * Created on 22.3.2016. * * @author Bojan Kseneman * @description A recycler view that will draw the scroll bar with a different color */ public class CustomScrollBarRecyclerView extends RecyclerView { private int scrollBarColor = Color.RED; public CustomScrollBarRecyclerView(Context context) { super(context); } public CustomScrollBarRecyclerView(Context context, AttributeSet attrs) { super(context, attrs); } public CustomScrollBarRecyclerView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public void setScrollBarColor(@ColorInt int scrollBarColor) { this.scrollBarColor = scrollBarColor; } /** * Called by Android {@link android.view.View#onDrawScrollBars(Canvas)} **/ protected void onDrawHorizontalScrollBar(Canvas canvas, Drawable scrollBar, int l, int t, int r, int b) { scrollBar.setColorFilter(scrollBarColor, PorterDuff.Mode.SRC_ATOP); scrollBar.setBounds(l, t, r, b); scrollBar.draw(canvas); } /** * Called by Android {@link android.view.View#onDrawScrollBars(Canvas)} **/ protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, int l, int t, int r, int b) { scrollBar.setColorFilter(scrollBarColor, PorterDuff.Mode.SRC_ATOP); scrollBar.setBounds(l, t, r, b); scrollBar.draw(canvas); } } 

这些方法在View类中定义,所以相同的Prinable应该像ScrollView和ListView一样工作。