
回复
本日历应用是基于鸿蒙操作系统(HarmonyOS)开发的原生应用,主要功能包括:
CalendarView
控件实现日历视图。graph TD;
A[启动应用] --> B[加载 CalendarView]
B --> C[用户选择日期]
C --> D{是否有事件}
D -- 是 --> E[显示事件列表]
D -- 否 --> F[提示无事件]
E --> G[用户操作选项]
G --> H[添加事件]
G --> I[编辑事件]
G --> J[删除事件]
H --> K[保存至数据库]
I --> L[更新数据库]
J --> M[删除数据库记录]
K --> N[设置提醒]
L --> N
M --> O
N --> P[应用结束]
O --> P
F --> P
CalendarView
控件显示日历。// MainAbilitySlice.java
public class MainAbilitySlice extends AbilitySlice {
private CalendarView calendarView;
private EventDatabaseHelper dbHelper;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setUIContent(ResourceTable.Layout_ability_main);
// 初始化控件和数据库
calendarView = (CalendarView) findComponentById(ResourceTable.Id_calendarView);
dbHelper = new EventDatabaseHelper(this);
// 设置日期变更监听器
calendarView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
@Override
public void onSelectedDayChange(CalendarView view, int year, int month, int dayOfMonth) {
// 执行查询并更新 UI 显示
loadEventsForDate(year, month, dayOfMonth);
}
});
}
private void loadEventsForDate(int year, int month, int dayOfMonth) {
// 查询数据库并更新 UI
}
}
// EventDatabaseHelper.java
public class EventDatabaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "calendar.db";
private static final int DATABASE_VERSION = 1;
public EventDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String createTable = "CREATE TABLE events (" +
"id INTEGER PRIMARY KEY AUTOINCREMENT," +
"title TEXT," +
"description TEXT," +
"year INTEGER," +
"month INTEGER," +
"day INTEGER," +
"time INTEGER," +
"repeat INTEGER);";
db.execSQL(createTable);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS events");
onCreate(db);
}
}
// AddEventActivity.java
public class AddEventActivity extends AbilitySlice {
private EditText titleInput, descriptionInput;
private Button saveButton;
private EventDatabaseHelper dbHelper;
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setUIContent(ResourceTable.Layout_activity_add_event);
titleInput = (EditText) findComponentById(ResourceTable.Id_event_title);
descriptionInput = (EditText) findComponentById(ResourceTable.Id_event_description);
saveButton = (Button) findComponentById(ResourceTable.Id_save_button);
dbHelper = new EventDatabaseHelper(this);
saveButton.setClickedListener(listener -> {
saveEvent();
});
}
private void saveEvent() {
SQLiteDatabase db = dbHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("title", titleInput.getText().toString());
values.put("description", descriptionInput.getText().toString());
values.put("year", selectedYear);
values.put("month", selectedMonth);
values.put("day", selectedDay);
values.put("time", eventTime); // 需要从时间选择控件获取
values.put("repeat", repeatOption); // 需要从重复选项获取
long newRowId = db.insert("events", null, values);
db.close();
// 设置提醒时间
setAlarm(newRowId, eventTime);
}
private void setAlarm(long eventId, long eventTime) {
// 使用 AlarmManager 设置事件提醒
}
}
// MainAbilitySliceTest.java
public class MainAbilitySliceTest {
private MainAbilitySlice mainAbilitySlice;
private CalendarView mockCalendarView;
private EventDatabaseHelper mockDbHelper;
@Before
public void setUp() {
mainAbilitySlice = new MainAbilitySlice();
mockCalendarView = Mockito.mock(CalendarView.class);
mockDbHelper = Mockito.mock(EventDatabaseHelper.class);
}
@Test
public void testLoadEventsForDate() {
Mockito.when(mockDbHelper.getReadableDatabase()).thenReturn(Mockito.mock(SQLiteDatabase.class));
mainAbilitySlice.loadEventsForDate(2023, 10, 15);
// 验证数据库查询和 UI 更新方法被调用
}
}
该项目展示了如何使用鸿蒙操作系统进行原生应用开发,通过 CalendarView
控件和 SQLite 数据库,实现了一个基本的日历应用。应用支持事件的增加、编辑、删除以及提醒功能,满足了日程管理的基本需求。
希望这个示例能帮助你更好地理解鸿蒙系统下的应用开发过程,并激发出更多创新的想法。