方法一：重写webview构造方法

public class MyWebView extends WebView {
 
    public VivoWebView(Context context) {
        super(getFixedContext(context));
    }
 
    public VivoWebView(Context context, AttributeSet attrs) {
        super(getFixedContext(context), attrs);
    }
 
    public VivoWebView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(getFixedContext(context), attrs, defStyleAttr);
    }

    private static Context getFixedContext(Context context) {
        if (Build.VERSION.SDK_INT == 21 || Build.VERSION.SDK_INT == 22) // Android Lollipop 5.0 & 5.1
            return context.createConfigurationContext(new Configuration());
        return context;
    }
}

方法二：修改build.gradle appcompat依赖版本

dependencies {

    implementation 'androidx.appcompat:appcompat:1.2.0-beta01'
 
}