（android studio mobile app project）错误：包com.google.ads不存在

Question

我最近进入了一个游戏项目（reskinning）并且无法在android studio ==＆gt;上编译9个错误;

error: package com.google.ads does not exist// import com.google.ads.AdRequest;
error: package com.google.ads does not exist// import com.google.ads.AdSize;
error: package com.google.ads does not exist// import com.google.ads.AdView;
error: cannot find symbol class AdView// AdView ad = new AdView(this, AdSize.BANNER, "xxxxxxxxxxxxx");
error: cannot find symbol class AdView// AdView ad = new AdView(this, AdSize.BANNER, "xxxxxxxxxxxxx");
error: cannot find symbol variable AdSize// AdView ad = new AdView(this, AdSize.BANNER, "xxxxxxxxxxxxx");
error: cannot find symbol class AdRequest// AdRequest request = new AdRequest();
error: cannot find symbol class AdRequest// AdRequest request = new AdRequest();

Answer 1

您是否在gradle.build中指定了google play服务？

Compile 'com.google.android.gms:play-services:+'