android studio 3.0 升级后突然Error:(26, 13) Failed to resolve: com.squareup.picasso:picasso:2.5.2的问题

在今天因为要适配android 8.0的桌面图标,所以升级了android studio到3.0,升级后就遇到了很多问题,要你升级开发gradle等等,这都还好,突然报了Failed to resolve这个错误,真的要命,就是下载不了第三方的组件,然后一直找找找,最后在build.gardle里面添加了

repositories { 
maven { 
url "http://repo1.maven.org/maven2" 
} 
}后面就可以了,真的不容易

//下面得全部得代码,这个是主gradle得,其他再moudle.gradle中注释了compile 'com.android.support:design:26.+'

buildscript {
    repositories {
        jcenter()
        maven {
            url "http://repo1.maven.org/maven2"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'

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

allprojects {
    repositories {
        jcenter()
        maven {
            url "http://repo1.maven.org/maven2"
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}