Question

我是Java和android的初学者。我确定这是一个基本问题。尝试导入与当前文件相邻的文件中定义的类时出现错误。该代码位于https://github.com/morenoh149/HarryLearnsAndroid/blob/master/HttpDemo/app/src/main/java/com/harrymoreno/httpdemo/MainActivity.java#L44

// MainActivity.java
package com.harrymoreno.httpdemo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.Toast;

import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

import com.harrymoreno.httpdemo.GitHubRepoAdapter;

public class MainActivity extends AppCompatActivity {

    private ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView = (ListView) findViewById(R.id.pagination_list);

        Retrofit.Builder builder = new Retrofit.Builder()
                .baseUrl("https://api.github.com/")
                .addConverterFactory(GsonConverterFactory.create());

        Retrofit retrofit = builder.build();

        GithubClient client = retrofit.create(GithubClient.class);
        Call<List<GithubRepo>> call = client.reposForUser("morenoh149");

        call.enqueue(new Callback<List<GithubRepo>>() {
            @Override
            public void onResponse(Call<List<GithubRepo>> call, Response<List<GithubRepo>> response) {
                List<GithubRepo> repos = response.body();

                // error error: cannot find symbol class GithubRepoAdapter
                listView.setAdapter(new GithubRepoAdapter(MainActivity.this, repos));
            }

            @Override
            public void onFailure(Call<List<GithubRepo>> call, Throwable t) {
                Toast.makeText(MainActivity.this, "error :(", Toast.LENGTH_SHORT).show();
            }
        });
    }
}

和

// GitHubRepoAdapter.java
package com.harrymoreno.httpdemo;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.List;

public class GitHubRepoAdapter extends ArrayAdapter<GithubRepo> {

    private Context context;
    private List<GithubRepo> values;

    public GitHubRepoAdapter(Context context, List<GithubRepo> values) {
        super(context, R.layout.list_item_pagination, values);

        this.context = context;
        this.values = values;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;

        if (row == null) {
            LayoutInflater inflater =
                    (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row = inflater.inflate(R.layout.list_item_pagination, parent, false);
        }

        TextView textView = (TextView) row.findViewById(R.id.list_item_pagination_text);

        GithubRepo item = values.get(position);
        String message = item.getName();
        textView.setText(message);

        return row;
    }
}

Answer 1

您在该错误行上有拼写错误。

应为<!DOCTYPE html>  <html xmlns:th="http://www.thymeleaf.org"> <head>  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <title>index</title>  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">  <script defer src="https://use.fontawesome.com/releases/v5.0.13/js/solid.js" integrity="sha384-tzzSw1/Vo+0N5UhStP3bvwWPq+uvzCMfrN1fEFe+xBmv1C/AtVX5K0uZtmcHitFZ" crossorigin="anonymous"></script> <script defer src="https://use.fontawesome.com/releases/v5.0.13/js/fontawesome.js" integrity="sha384-6OIrr52G08NpOFSZdxxz1xdNSndlD4vdcf/q2myIUVO0VsqaGHJsB0RaBE01VTOY" crossorigin="anonymous"></script> <link rel="stylesheet" type="text/css" th:href="@{/static/css/styles.css}" media="screen, projection"> </head> <body> INDEX <div class="wrapper">  <div id="sidebar"> <div th:insert="fragments/sidemenu.html"></div> </div> <div id="content"> <nav class="navbar navbar-expand-lg navbar-light bg-light"> <div class="container-fluid"> <button type="button" id="sidebarCollapse" class="btn btn-info"> <i class="fas fa-align-left"></i> <span>Toggle Sidebar</span> </button> <Welcomne sec:authentication="name"></Welcomne> </div> </nav> </div> </div>  <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script> <script type="text/javascript"> $(document).ready(function () { $('#sidebarCollapse').on('click', function () { $('#sidebar').toggleClass('active'); }); }); </script> </body> </html>，而不是GitHubRepoAdapter。

错误错误：找不到符号类GithubRepoAdapter

1 个答案: