解决方案----Android中出现 Cannot resolve symbol XXX

话不多说,直接上图

解决方案1:

然后点击

解决方案----Android中出现 Cannot resolve symbol XXX_第1张图片

解决方案2:

1.哪个Jar包有问题就把该配置注释掉,比如下面这个:

dependencies { 
    //implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
    //implementation 'com.android.support:design:28.0.0-alpha3'
    //implementation 'com.android.support:support-v4:28.0.0-alpha3'
    //implementation 'com.android.support:recyclerview-v7:28.0.0-alpha3'
}

2.点击Sync Now 
 
3.然后解开注释

dependencies { 
    implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
    implementation 'com.android.support:design:28.0.0-alpha3'
    implementation 'com.android.support:support-v4:28.0.0-alpha3'
   implementation 'com.android.support:recyclerview-v7:28.0.0-alpha3'
}

4.再点击Sync Now 
 

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