在gradle中添加相关依赖

加载时报错

ERROR: Unable to resolve dependency for ':app@debug/compileClasspath': Could not download RxUI.aar (com.github.tamsiree.RxTool:RxUI:v2.4.1)
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Affected Modules: app




ERROR: Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not download RxUI.aar (com.github.tamsiree.RxTool:RxUI:v2.4.1)
Show Details
Affected Modules: app




ERROR: Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not download RxUI.aar (com.github.tamsiree.RxTool:RxUI:v2.4.1)
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Affected Modules: appdazaza

在build中已经添加了该加的内容

buildscript {
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }//-----------------添加的内容-----------------
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }//-----------------添加的内容-----------------
    }
}

顺带一问，任务栏里的空白AndroidStudio图标怎么去掉

它是空白的...

没有百度到解决办法