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How to solve Admobi error cannot find symbol?
原标题:

In my Gradel build I use

`

    dependencies {implementation  com.google.android.gms:play-services-ads:20.4.0 
    
      implementation  com.google.firebase:firebase-auth:21.0.3 
    
        implementation  com.google.firebase:firebase-database:19.6.0 
    
        implementation  com.google.firebase:firebase-messaging:17.3.1 
    
        implementation  com.google.firebase:firebase-firestore:23.0.4                                                     implementation  com.google.firebase:firebase-storage:20.0.1 
    
    implementation  com.firebase:firebase-client-android:2.3.1 
    
        implementation  com.firebaseui:firebase-ui-database:4.3.2                                                                     implementation  com.google.firebase:firebase-analytics:19.0.2 

apply plugin:  com.google.gms.google-services }`

And gradel app

Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {

    repositories {

        google()

        jcenter()

    }

    dependencies {

        classpath  com.android.tools.build:gradle:7.0.4 

        classpath  com.google.gms:google-services:4.3.15 

        classpath  com.github.dcendents:android-maven-gradle-plugin:2.1 

        classpath  com.google.firebase:perf-plugin:1.3.1 

        classpath  com.android.tools.build:gradle:7.0.4 

    }

}

allprojects {

    repositories {

        maven { url "https://jitpack.io"

        }

        google()

        jcenter()

    }

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

In my activity class

`

private AdView mAdView;

    mAdView = findViewById(R.id.adView);

    AdRequest adRequest = new AdRequest.Builder().build();

    mAdView.loadAd(adRequest);`

error: cannot find symbol

private AdView mAdView;

        ^

symbol: class AdView

location: class SearchActivity

Admob ads are not working for me. I am trying to identify them in the class. They do not have any private library. What is the solution to this problem?

error: cannot find symbol private

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