4.10

还是个人作业
• 所花时间：2
• 代码行数：479
• 博客容量：1
• 代码如下：

package com.example.undertaking;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Application;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.example.undertaking.TaskPackage.DayTask;
import com.example.undertaking.TaskPackage.WeekDAO;
import com.example.undertaking.TaskPackage.WeekTask;

import java.util.ArrayList;
import java.util.List;

public class SummaryOfMonth extends AppCompatActivity {

    private TextView tv_tips;
    private ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_summary_of_month);
        tv_tips = findViewById(R.id.tv_first);
        listView = findViewById(R.id.learnOfWeeks);


        WeekDAO.QueryAll queryAll=new WeekDAO.QueryAll() {
            @Override
            public void OperationCompletely(List<WeekTask> result) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        updateLearnWeeks(result);
                    }
                });
            }
        };
        WeekDAO.finishQueryAll(MyApplication.user.id,queryAll);
    }
    private void updateLearnWeeks(List<WeekTask> weekList) {
        // 创建一个字符串列表用于存储 DayTask 对象的字符串表示形式
        tv_tips.setText("最近学习周数"+weekList.size());
        List<String> dayStrings = new ArrayList<>();
        for (int i = weekList.size() - 1; i >= Math.max(0, weekList.size() - 5); i--) {
            dayStrings.add(weekList.get(i).toString());
        }


        // 创建适配器并将其应用到 ListView 上
        ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, dayStrings);
        listView.setAdapter(adapter);
    }
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/mainBackground">

    <TextView
        android:text="本月学习周数："
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tv_first"
        android:textColor="@color/white"
        android:textSize="22sp"
        android:layout_marginTop="20dp"/>

    <ListView
        android:id="@+id/learnOfWeeks"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="@null"
        android:background="@color/white"
        android:dividerHeight="0dp"
        />

</LinearLayout>