Android Studio error: cannot find symbol class Ada

问题:

This is my gradle file and I am getting error:

cannot find symbol
import android.support.v7.internal.widget.AdapterViewCompat;
error:package AdapterViewCompat does not exist. 

Grade is as below:

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'


android {
    compileSdkVersion 23
    buildToolsVersion '23.0.1'

 ...    

 dependencies 
 {
    compile 'com.android.support:cardview-v7:23.0.0'
    compile 'com.android.support:recyclerview-v7:23.0.0'
    compile 'com.android.support:design:23.0.0'
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:gridlayout-v7:+'
    ...        
  }

回答1:

It happens because the

android.support.v7.internal.widget.AdapterViewCompat;

doesn't exist in appcompat v23 (while it existed in v22).
You can check it in

androidsdk\extras\android\m2repository\com\android\support\appcompat-v7\23.1.0\appcompat-v7-23.1.0-sources.jar

In general don't use the class inside the internal package.

回答2:

android.support.v7.internal.widget.AdapterViewCompat;

Edit

You should use buildToolsVersion "22.0.1" because of Its obsolete in 23 .

回答3:

if you have existing code then change AdapterViewCompat to AdapterView and import android.widget.AdapterView; if you are writing new code then use AdapterView instead AdapterViewcompact as AdapterViewCompact deprecated in api v23 or higher