Cannot resolve com.google.android.gcm.GCMBaseInten

Edit: I solved this problem:) Cause of this error :

In the tutorial Implementing GCM Client , there was link to download full source code for demo.
Downloaded for reference , added google_play_service library in build.gradle.
Did some recommended changes like SENDER_ID,SERVER_URL,.. etc
Synch the project with gradle and got this error.

How I solved!

After lot of google I found that this class is not in google_play_service library but it is in gcm.jar which is deprecated now. I dont know why google has given link to old code and explained latest code in the document.
Then I include the gcm.jar
And the error gone, got push notification:)

Hope this will help to someone who got in this trouble!

My Old Question

I am new to android studio. I dont understand build.gradle. Today I was implementing gcm-demo-client following instructions given here https://developer.android.com/google/gcm/client.html But when I import it from suggested open source code I got below errors.

/home/shani/Desktop/gcm-76908409d9d5/samples/gcm-demo-client1/app/src/main/java/com/google/android/gcm/demo/app/GCMIntentService.java:28: error: cannot find symbol
import com.google.android.gcm.GCMBaseIntentService;
                             ^
  symbol:   class GCMBaseIntentService
  location: package com.google.android.gcm

also there are other 25 errors. After some search on Google I found that it is because I had not added google play service library in build.gradle.

Then I added library: Below is my build.gradle file

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.google.android.gcm.demo.app"
        minSdkVersion 8
        targetSdkVersion 16
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
        dependencies {
            compile "com.google.android.gms:play-services:3.1.+"
        }
    }
}

Now when I click on sync now link I got Build Success. But when I try to run on real device above error comes. I dont know what I am doing wrong. Please give me the solution, I really spend two days implementing gcm demo app.

回答1:

This happens if you use the latest, 7.0.0 version. They sliced up the Google Play Services a bit further than in 6.5, due to how there is an upper limit to method count (65536).

Anyways,

compile 'com.google.android.gms:play-services-base:6.5.87'

This works with the GCM classes the guides mention.

But it also works by updating to the latest

compile 'com.google.android.gms:play-services-gcm:7.0.0'

回答2:

I think your problem is that gradle is not downloading your dependency. I had the same problem but I solved it when I Invalidated cache and restarted android studio. Click on file > invalidate cache/restart

回答3:

The google play services you are using is outdated use the following lines in your gradle file and then again sync the project with gradle.

dependencies {
 compile 'com.google.android.gms:play-services:7.0.0'
}

This will surely remove your error.

回答4:

Use this Google Play Services, it's working

compile 'com.google.android.gms:play-services:8.1.0'