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news 2025/10/10 2:25:46

可信赖的手机网站设计,淄博网站优化资讯,企业型网站价目表,加强财政门户网站建设工作功能在安卓应用里调用系统日历，直接创建一个带提醒的日历事件，甚至不需要跳转到日历界面，只需要获取系统日历的读取权限即可。需要的权限在AndroidManifest.xml里添加 <uses-permission android:name"android.permission.READ_CAL…

功能

在安卓应用里调用系统日历，直接创建一个带提醒的日历事件，甚至不需要跳转到日历界面，只需要获取系统日历的读取权限即可。

需要的权限

在AndroidManifest.xml里添加

<uses-permission android:name="android.permission.READ_CALENDAR"/>
<uses-permission android:name="android.permission.WRITE_CALENDAR"/>

注意：如果是Android 6.0（API 23）以上，需要动态申请权限。

代码

创建一个CalendarHelper工具类，包含：

获取系统日历账户
自动写入事件
添加提醒
自动处理没有日历账户的情况（可提示用户手动创建）
动态申请权限(当用户拒绝权限时，我这里会弹出一个提示框，提示的内容可以从外部传入，也可以使用默认的。或者你不是使用默认，直接打开系统的设置页面也是可以的(下面屏蔽了这部分的代码))
判断是否已存在相同时间的逻辑，避免重复添加

package com.cocos.calender;import android.app.Activity;
import android.Manifest;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.provider.CalendarContract;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;import androidx.annotation.NonNull;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;import java.util.Calendar;
import java.util.TimeZone;
import org.json.JSONObject;
import org.json.JSONException;
import android.widget.Toast;public class CalendarHelper {private static final String TAG = "CalendarHelper";/** 用来存放拒绝权限时的提示语 */private static String denyPermissionMessage = "未获得日历权限，无法添加提醒事件";/** 日历权限请求码 */public static final int REQUEST_CALENDAR_PERMISSION = 1010;/** 临时存储待执行事件 */private static PendingEvent pendingEvent;private static class PendingEvent {String title;String description;String location;long beginTime;long endTime;int reminderMinutes;PendingEvent(String title, String description, String location,long beginTime, long endTime, int reminderMinutes) {this.title = title;this.description = description;this.location = location;this.beginTime = beginTime;this.endTime = endTime;this.reminderMinutes = reminderMinutes;}}/*** 检查权限并添加事件（带权限请求）*/public static void addEventWithPermission(Activity activity,String title,String description,String location,long beginTimeMillis,long endTimeMillis,int reminderMinutes) {// 检查日历读写权限if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_CALENDAR)!= PackageManager.PERMISSION_GRANTED|| ContextCompat.checkSelfPermission(activity, Manifest.permission.READ_CALENDAR)!= PackageManager.PERMISSION_GRANTED) {// 保存事件等待用户授权pendingEvent = new PendingEvent(title, description, location, beginTimeMillis, endTimeMillis, reminderMinutes);// 这里可以加解释，但不强制if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.READ_CALENDAR)) {Log.i(TAG, "需要日历权限来添加提醒事件");}// ✅ 直接请求权限（即使用户上次拒绝，这里依旧会再弹一次）ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.READ_CALENDAR,Manifest.permission.WRITE_CALENDAR},REQUEST_CALENDAR_PERMISSION);} else {// 权限已授权，直接添加addEvent(activity, title, description, location, beginTimeMillis, endTimeMillis, reminderMinutes);}}/*** 在 Activity 的 onRequestPermissionsResult 中调用*/public static void onRequestPermissionsResultCalendar(Activity activity,int requestCode,@NonNull int[] grantResults) {if (requestCode == REQUEST_CALENDAR_PERMISSION) {if (grantResults.length >= 2&& grantResults[0] == PackageManager.PERMISSION_GRANTED&& grantResults[1] == PackageManager.PERMISSION_GRANTED) {Log.i(TAG, "日历权限申请成功");if (pendingEvent != null) {addEvent(activity,pendingEvent.title,pendingEvent.description,pendingEvent.location,pendingEvent.beginTime,pendingEvent.endTime,pendingEvent.reminderMinutes);pendingEvent = null;}} else {Log.e(TAG, "用户拒绝了日历权限");Toast.makeText(activity,denyPermissionMessage,Toast.LENGTH_SHORT).show();// 如果用户永久拒绝，可跳转设置
//                if (!ActivityCompat.shouldShowRequestPermissionRationale(activity, android.Manifest.permission.READ_CALENDAR)) {
//                    Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
//                    intent.setData(Uri.parse("package:" + activity.getPackageName()));
//                    activity.startActivity(intent);
//                }}}}/** 获取系统日历账户 ID */private static long getCalendarAccountId(Context context) {Cursor userCursor = context.getContentResolver().query(CalendarContract.Calendars.CONTENT_URI,new String[]{CalendarContract.Calendars._ID},null, null, null);if (userCursor != null) {try {if (userCursor.moveToFirst()) {return userCursor.getLong(0);}} finally {userCursor.close();}}return -1;}/** 判断事件是否已存在（避免重复） */private static boolean isEventAlreadyExists(Context context, String title, long beginTimeMillis) {long oneMinuteBefore = beginTimeMillis - 60 * 1000;long oneMinuteAfter = beginTimeMillis + 60 * 1000;Cursor cursor = context.getContentResolver().query(CalendarContract.Events.CONTENT_URI,new String[]{CalendarContract.Events._ID},CalendarContract.Events.TITLE + "=? AND " +CalendarContract.Events.DTSTART + ">=? AND " +CalendarContract.Events.DTSTART + "<=?",new String[]{title, String.valueOf(oneMinuteBefore), String.valueOf(oneMinuteAfter)},null);if (cursor != null) {try {if (cursor.moveToFirst()) {return true; // 已存在}} finally {cursor.close();}}return false;}/** 插入日历事件 + 提醒 */private static boolean addEvent(Context context,String title,String description,String location,long beginTimeMillis,long endTimeMillis,int reminderMinutes) {long calId = getCalendarAccountId(context);if (calId == -1) {Log.e(TAG, "没有找到系统日历账户，请先在系统日历中添加一个账户");return false;}if (isEventAlreadyExists(context, title, beginTimeMillis)) {Log.w(TAG, "事件已存在，跳过添加: " + title);return false;}ContentValues eventValues = new ContentValues();eventValues.put(CalendarContract.Events.CALENDAR_ID, calId);eventValues.put(CalendarContract.Events.TITLE, TextUtils.isEmpty(title) ? "未命名事件" : title);eventValues.put(CalendarContract.Events.DESCRIPTION, description);eventValues.put(CalendarContract.Events.EVENT_LOCATION, location);eventValues.put(CalendarContract.Events.DTSTART, beginTimeMillis);eventValues.put(CalendarContract.Events.DTEND, endTimeMillis);eventValues.put(CalendarContract.Events.HAS_ALARM, 1);eventValues.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getID());Uri newEvent = context.getContentResolver().insert(CalendarContract.Events.CONTENT_URI, eventValues);if (newEvent == null) {Log.e(TAG, "插入日历事件失败");return false;}long eventId = ContentUris.parseId(newEvent);ContentValues reminderValues = new ContentValues();reminderValues.put(CalendarContract.Reminders.EVENT_ID, eventId);reminderValues.put(CalendarContract.Reminders.MINUTES, reminderMinutes);reminderValues.put(CalendarContract.Reminders.METHOD, CalendarContract.Reminders.METHOD_ALERT);Uri reminderUri = context.getContentResolver().insert(CalendarContract.Reminders.CONTENT_URI, reminderValues);if (reminderUri == null) {Log.e(TAG, "插入提醒失败");return false;}Log.i(TAG, "日历事件添加成功，eventId=" + eventId);return true;}public static void creatroCalendarReminder(Context context,String data){try {// 将传入的字符串转成 JSON 对象JSONObject json = new JSONObject(data);// 从 JSON 中取字段，如果没有就用默认值String title = json.optString("title", "测试");String description = json.optString("description", "测试");String location = json.optString("location", "测试");int startHour = json.optInt("startHour", 1);int startMinute = json.optInt("startMinute", 10);int endHour = json.optInt("endHour", startHour + 1);Calendar begin = Calendar.getInstance();begin.add(Calendar.DAY_OF_MONTH, 0);         // 哪天开始，Calendar.DAY_OF_MONTH当前时间 + 后面参数值，比如我这里为0，就是今天，如果为1就是明天begin.set(Calendar.HOUR_OF_DAY, startHour);  // 开始的小时，这里是24小时制 startHour的取值范围为0~23begin.set(Calendar.MINUTE, startMinute);     // 开始的分钟 Calendar end = (Calendar) begin.clone();end.set(Calendar.HOUR_OF_DAY, endHour);      // 结束的时间，参数和上面开始时间一样，赋值方式为end.set（）if (context == null) {Log.e("Calendar", "Context is null");return;}// 添加事件CalendarHelper.addEventWithPermission((Activity) context,title,description,location,begin.getTimeInMillis(),   //事件开始时间的毫秒值end.getTimeInMillis(),     //事件结束时间的毫秒值5   // 提前5分钟提醒);} catch (JSONException e) {e.printStackTrace();Log.e("Calendar", "JSON解析失败：" + data);}}/*** 从外部传提示文本过来* @param message*/public static void setDenyPermissionMessage(String message) {if (!TextUtils.isEmpty(message)) {denyPermissionMessage = message;}}
}

Activity中的逻辑

先在Activity中引入CalendarHelper类，并调用CalendarHelper.creatroCalendarReminder()方法，传入参数，实现日历添加功能。

    @Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);// 处理日历权限if (requestCode == CalendarHelper.REQUEST_CALENDAR_PERMISSION) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {CalendarHelper.onRequestPermissionsResultCalendar(this, requestCode, grantResults);}}}

添加创建日历提醒事件和传入提示文本

    /*** 创建日历提醒事件* @param data*/public static void creatroCalendarReminder(String data){Context context = AppActivity.getInstance();CalendarHelper.creatroCalendarReminder(context,data);}/*** 获取读取日历权限被拒绝时的提示文本* @param str*/public static void setDenyPermissionMessage(String str){CalendarHelper.setDenyPermissionMessage(str);}