要实现不使用系统渲染界面访问系统日历约会,可以使用系统提供的日历API来进行操作。下面是一个使用Java代码示例的解决方法:
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.provider.CalendarContract;
// 查询系统日历中的约会
public void queryCalendarEvents() {
ContentResolver contentResolver = getContentResolver();
Uri uri = CalendarContract.Events.CONTENT_URI;
String[] projection = new String[]{
CalendarContract.Events._ID,
CalendarContract.Events.TITLE,
CalendarContract.Events.DTSTART,
CalendarContract.Events.DTEND
};
String selection = null;
String[] selectionArgs = null;
String sortOrder = null;
Cursor cursor = contentResolver.query(uri, projection, selection, selectionArgs, sortOrder);
if (cursor != null && cursor.moveToFirst()) {
do {
long eventId = cursor.getLong(cursor.getColumnIndex(CalendarContract.Events._ID));
String eventTitle = cursor.getString(cursor.getColumnIndex(CalendarContract.Events.TITLE));
long eventStart = cursor.getLong(cursor.getColumnIndex(CalendarContract.Events.DTSTART));
long eventEnd = cursor.getLong(cursor.getColumnIndex(CalendarContract.Events.DTEND));
// 处理约会数据
// ...
} while (cursor.moveToNext());
cursor.close();
}
}
// 创建新的约会
public void createCalendarEvent() {
ContentResolver contentResolver = getContentResolver();
Uri uri = CalendarContract.Events.CONTENT_URI;
ContentValues values = new ContentValues();
values.put(CalendarContract.Events.CALENDAR_ID, 1); // 设置日历ID
values.put(CalendarContract.Events.TITLE, "约会标题");
values.put(CalendarContract.Events.DTSTART, System.currentTimeMillis() + 1000 * 60 * 60); // 设置开始时间
values.put(CalendarContract.Events.DTEND, System.currentTimeMillis() + 1000 * 60 * 60 * 2); // 设置结束时间
Uri eventUri = contentResolver.insert(uri, values);
long eventId = Long.parseLong(eventUri.getLastPathSegment());
// 处理创建的约会数据
// ...
}
// 更新约会
public void updateCalendarEvent(long eventId) {
ContentResolver contentResolver = getContentResolver();
Uri uri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventId);
ContentValues values = new ContentValues();
values.put(CalendarContract.Events.TITLE, "更新后的约会标题");
values.put(CalendarContract.Events.DTSTART, System.currentTimeMillis() + 1000 * 60 * 60 * 3); // 更新开始时间
values.put(CalendarContract.Events.DTEND, System.currentTimeMillis() + 1000 * 60 * 60 * 4); // 更新结束时间
int rows = contentResolver.update(uri, values, null, null);
if (rows > 0) {
// 更新成功
} else {
// 更新失败
}
}
// 删除约会
public void deleteCalendarEvent(long eventId) {
ContentResolver contentResolver = getContentResolver();
Uri uri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventId);
int rows = contentResolver.delete(uri, null, null);
if (rows > 0) {
// 删除成功
} else {
// 删除失败
}
}
请注意,上述代码示例中的日历ID使用了固定的值1,你需要根据自己的实际情况来获取正确的日历ID。此外,还可以根据需要添加其他的约会属性和过滤条件。