在更改日历事件提醒变化的情况下ID，而不是提醒ID [英] Changing a reminder on a calendar event changes the event id, not reminder id
问题描述
我试图写一些code，可以告诉我们，如果对事件的提醒被改变（或者是添加或删除），但我发现了一个奇怪的现象。取而代之的是提醒被删除或更改，这似乎已经被删除的情况下，重新加入！是我的code不正确的？或者，这是什么是真正发生的？
要测试这一点，你需要：
-
创建一个提醒事件
-
点击该按钮同步T后模拟器
-
在该事件中删除提醒
-
等到那变化同步到你的模拟器，然后再次单击该按钮
JAVA code
包com.example.remindertest;进口java.text.DateFormat中;
进口java.text.SimpleDateFormat的;
进口的java.util.Calendar;进口android.app.Activity;
进口android.content.ContentResolver;
进口android.content.ContentUris;
进口android.database.Cursor;
进口android.net.Uri;
进口android.provider.CalendarContract.CalendarAlerts;
进口android.provider.CalendarContract.Events;
进口android.provider.CalendarContract.Instances;
进口android.provider.CalendarContract.Reminders;
进口android.util.Log;
进口android.view.View;公共类ReminderActivity扩展活动
{
最终静态公共字符串标记=ReminderActivity; @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）; //添加按钮
的setContentView（R.layout.reminder_activity）;
Log.d（TAG，启动）;
} 公共无效的onClick（视图v）
{
光标光标= getContentResolver（）查询（
Reminders.CONTENT_URI，
NULL，NULL，NULL，NULL
）; 字符串str =; / *
*有些蹩脚code测试此
* /
而（cursor.moveToNext（））
{
INT事件ID = cursor.getInt（cursor.getColumnIndex（Reminders.EVENT_ID））;
光标eCursor = getContentResolver（）查询（
Events.CONTENT_URI，
新的String [] {Events._ID，Events.TITLE}，
_id =？，新的String [] {+ EVENTID}（字符串）NULL）; eCursor.moveToNext（）;
字符串title = eCursor.getString（eCursor.getColumnIndex（Events.TITLE））; STR + = EVENTID +=+标题+=+
cursor.getInt（cursor.getColumnIndex（Reminders._ID））+=+
cursor.getInt（cursor.getColumnIndex（Reminders.METHOD））+=+
cursor.getLong（cursor.getColumnIndex（Reminders.MINUTES））+\\ n;
} Log.d（TAG，STR）;
}
}
布局XML
＆LT;的RelativeLayout的xmlns：机器人=http://schemas.android.com/apk/res/android
的xmlns：工具=http://schemas.android.com/tools
机器人：layout_width =match_parent
机器人：layout_height =match_parent
工具：上下文=。ReminderActivity＆GT;＆LT;按钮
机器人：ID =@ + ID /按钮1
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =WRAP_CONTENT
机器人：layout_alignParentTop =真
机器人：layout_centerHorizontal =真
机器人：layout_marginTop =98dp
安卓的onClick =的onClick
机器人：文字=按钮/＆GT;＆LT; / RelativeLayout的＆GT;
清单XML
＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT;清单的xmlns：机器人=http://schemas.android.com/apk/res/android
包=com.example.remindertest
安卓版code =1
机器人：=的versionName1.0＆GT;＆LT;用途-SDK
安卓的minSdkVersion =14
机器人：targetSdkVersion =17/＆GT;＆LT;使用许可权的android：NAME =android.permission.READ_CALENDAR/＆GT;
＆LT;使用许可权的android：NAME =android.permission.WRITE_CALENDAR/＆GT;＆lt;应用
机器人：allowBackup =真
机器人：图标=@绘制/ ic_launcher
机器人：标签=@字符串/ APP_NAME
机器人：主题=@风格/ AppTheme＆GT;
＆LT;活动
机器人：名字=com.example.remindertest.ReminderActivity
机器人：标签=@字符串/ APP_NAME＆GT;
＆所述;意图滤光器＆gt;
＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT; ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;
＆所述; /意图滤光器＆gt;
＆LT; /活性GT;
＆LT; /用途＆gt;＆LT; /清单＆GT;
没有，你的code是正确的。完全相同发生在我的6个设备 - 事件改变了它的ID（可能是重建）当您编辑它。顺便说一句，这也发生在您更改事件的时间，名称，位置或任何其他细节 - 不只是提醒。搞笑的是，它并不总是发生 - 只是有时。但一般2-3编辑事件都足以模仿这种行为。
我不太知道为什么事件的频繁改变他们的ID，但在此基础上，我会说的原因，该事件的id不应该被用来作为唯一标识符。
I am trying to write some code that can tell if the reminders on an event were changed (either one added or removed) but I'm getting a weird occurrence. Instead of the reminder being removed or altered, it appears the event is being removed and re-added! Is my code incorrect? Or is this what's really occurring?
To test this, you'll need to:
create an event with a reminder
click the button after that syncs t your emulator
Remove the reminder on the event
Wait till that change syncs to your emulator and then click the button again
JAVA CODE
package com.example.remindertest;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.database.Cursor;
import android.net.Uri;
import android.provider.CalendarContract.CalendarAlerts;
import android.provider.CalendarContract.Events;
import android.provider.CalendarContract.Instances;
import android.provider.CalendarContract.Reminders;
import android.util.Log;
import android.view.View;
public class ReminderActivity extends Activity
{
final static public String TAG = "ReminderActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Add button
setContentView(R.layout.reminder_activity);
Log.d(TAG, "Started");
}
public void onClick(View v)
{
Cursor cursor = getContentResolver().query(
Reminders.CONTENT_URI,
null, null, null, null
);
String str = "";
/*
* Some crappy code to test this
*/
while ( cursor.moveToNext())
{
int eventId = cursor.getInt(cursor.getColumnIndex(Reminders.EVENT_ID));
Cursor eCursor = getContentResolver().query(
Events.CONTENT_URI,
new String[] { Events._ID, Events.TITLE },
"_id = ?", new String[] {"" + eventId}, ( String ) null);
eCursor.moveToNext();
String title = eCursor.getString(eCursor.getColumnIndex(Events.TITLE));
str += eventId + " = " + title + " = " +
cursor.getInt(cursor.getColumnIndex(Reminders._ID)) + " = " +
cursor.getInt(cursor.getColumnIndex(Reminders.METHOD)) + " = " +
cursor.getLong(cursor.getColumnIndex(Reminders.MINUTES)) + "\n";
}
Log.d(TAG, str);
}
}
LAYOUT XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ReminderActivity" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="98dp"
android:onClick="onClick"
android:text="Button" />
</RelativeLayout>
MANIFEST XML
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.remindertest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.READ_CALENDAR"/>
<uses-permission android:name="android.permission.WRITE_CALENDAR"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.remindertest.ReminderActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
No, your code is correct. Exactly same happens on my 6 devices - event changes it's id (probably is recreated) when you edit it. Btw, it happens also when you change event's time, title, location or any other details - not just reminder. Funny is, that it doesn't always happen - just sometimes. But usually 2-3 edits of event are enough to simulate this behavior.
I do not quite know the reason why event's frequently changes their ids, but based on this I would say, that event's id shouldn't be used as unique identifier.
这篇关于在更改日历事件提醒变化的情况下ID，而不是提醒ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
