i道i的小小课表，源码文件，使用Android Studio 2022.3.1 Patch 1 版本编辑，java

package com.example.curriculum; import android.app.NotificationChannel; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.ColorStateList; import android.graphics.Color; import android.os.Bundle; import android.text.Spannable; import android.text.SpannableString; import android.text.style.RelativeSizeSpan; import android.util.Log; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.GridLayout; import android.widget.ImageButton; import android.widget.NumberPicker; import android.widget.TextView; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.app.AppCompatDelegate; import androidx.core.app.NotificationCompat; import androidx.core.content.ContextCompat; import androidx.core.view.GravityCompat; import java.time.LocalDate; import java.time.Period; import java.time.YearMonth; import java.time.temporal.ChronoUnit; import java.util.ArrayList; import java.util.Calendar; import java.util.Collections; public class MainActivity extends AppCompatActivity { Context context = this; Button goto_drawer, goto_week, goto_add_course; // 上面的按钮，三个，分别是打开抽屉，打开周选，添加课程 Button set_up, all_course, course_size, course_about;// 抽屉里的按钮，分别是设置,所有课程，课表大小，课表关于 GridLayout course_gridLayout; // 装课程的网格布局对话框 ImageButton drawerLayout_imageButton; // 抽屉上面的图片按钮，换主题用的 androidx.drawerlayout.widget.DrawerLayout drawer_layout; // 抽屉的引用 TextView month; TextView[] textview_week = new TextView[7]; private static final String TAG = "i道iMainActivity"; AlertDialog week_dialog; // 周选对话框 SharedPreferences sharedPreferences_set_up, sharedPreferences_data; // 保存设置 SharedPreferences.Editor editor_set_up, editor_data; // 保存设置 int text_size, button_height, now_week, display_week; //文字大小,按钮高度,当前周,显示周 Calendar calendar = Calendar.getInstance(); // 获取日期 int initial_month, initial_day, now_year, now_month, now_day; //初始月份,初始日期,当前年份,当前月份,当前日期 int morning_number, afternoon_number, evening_number; // 上午，下午，晚上课程数 String morning_time, afternoon_time, evening_time; // 上午，下午，晚上的上课下课时间 int imageButton_theme = 0; // 当前主题，0亮1暗 Course_Data[] course_data;// 所有课程的数据 String[] all_course_data; ArrayList<Button> course_buttons = new ArrayList<>(); // 所有课程的按钮 ArrayList<int[]> course_buttons_week = new ArrayList<>(); //为了方便通知，添加的课程在周几 TextView[] course_time = {}; // 时间轴文本框,有个初始值，防止访问失败 NotificationChannel channel; NotificationManager notificationManager; //打开栏侧边栏的触发器 private final View.OnClickListener onClickListener_drawer = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { drawer_layout.openDrawer(GravityCompat.START); } catch (Exception e) { Log.e(TAG, "goto_drawer,error"); } } }; // 抽屉最上面更改主题的图片按钮 private final View.OnClickListener onClickListener_drawer_image = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { if (imageButton_theme == 0) { getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES); imageButton_theme = 1; } else { getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO); imageButton_theme = 0; } editor_set_up.putInt("imageButton_theme", imageButton_theme); editor_set_up.apply(); } catch (Exception e) { Log.e(TAG, "goto_drawer_image,error"); } } }; // 周选按钮 private final View.OnClickListener onClickListener_goto_week = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { week_dialog.show(); // 显示对话框 } catch (Exception e) { Log.e(TAG, "goto_week,error"); } } }; // 添加课程按钮 private final View.OnClickListener onClickListener_goto_add_course = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { Intent intent = new Intent(); Bundle bundle = new Bundle(); // 带参数打开 bundle.putString("types of", "添加课程"); bundle.putString("parameter", "NULL"); intent.putExtras(bundle); intent.setClass(MainActivity.this, New_Course_Activity.class); startActivity(intent); } catch (Exception e) { Log.e(TAG, "goto_add_course,error"); } } }; // 打开所有课程的按钮 private final View.OnClickListener onClickListener_all_course = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { Intent intent = new Intent(); intent.setClass(MainActivity.this, All_Course_Activity.class); startActivity(intent); } catch (Exception e) { Log.e(TAG, "all_course,error"); } } }; // 打开设置的按钮 private final View.OnClickListener onClickListener_set_up = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { Intent intent = new Intent(); intent.setClass(MainActivity.this, Set_Up_Activity.class); startActivity(intent); } catch (Exception e) { Log.e(TAG, "set_up,error"); } } }; // 打开界面设置(课表大小)的按钮 private final View.OnClickListener onClickListener_course_size = new View.OnClickListener() { @Override public void onClick(View view) {//点击事件 try { Intent intent = new Intent(); intent.setClass(MainActivity.this, Course_Size_Activity.class); startActivity(intent); } catch (Exception e) { Log.e(TAG, "set_up,error"); } } }; private final View.OnClickListener onClickListener_course_about = new View.OnClickListener() { // 关于 @Override public void onClick(View view) {//点击事件 new android.app.AlertDialog.Builder(MainActivity.this) .setIcon(R.drawable.curriculum_pictures) .setTitle("关于") .setMessage("本程序由i道i制作").create().show(); } }; public void Change_data() {// 更新数据 // 获取数据 all_course_data = sharedPreferences_data.getString("all_course_data", "").split(";");// 全部课程字符串 int all_course_data_len = sharedPreferences_data.getInt("all_course_data_len", 0);// 全部课程数目 course_data = new Course_Data[all_course_data_len];// 全部课程数组 for (int i = 0; i < all_course_data_len; i++) { // 获取所有课程 course_data[i] = new Course_Data(sharedPreferences_data.getString(all_course_data[i], "错误&1