Android阶教程(二十三)之-Android中的日历读写操作!_Android

Android高手进阶教程(二十三)之---Android中的日历读写操作!!!

大家好,好久没有更新blog了，今天给大家分享一下Android中一些自带日历的操作方法,这里主要用到了ContentProiver的知识.如果大家不明白ContentProvider建议先查一下资料，知道它是干什么的。这样更容易下面的例子.

好了废话不说,这里提个醒，Android中的日历,只有真机才有，模拟上是没有的，所以测试环境一定要真机！！

因为日历是系统自带的，所以我们读写它一定要申请权限,也就是在AndroidManifest.xml加如下两行代码(一个读一个写):

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

Android中日历用了三个URL,分别是日历用户的URL,事件的URL，事件提醒URL,三个URL在Android2.1之前是如下的样子：

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calanderURL?=?"content://calendar/calendars";??
calanderEventURL?=?"content://calendar/events";??
calanderRemiderURL=?"content://calendar/reminders";??

但是在Android2.2版本以后,三个URL有了改变，变成如下的样子:

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calanderURL?=?"content://com.android.calendar/calendars";??
calanderEventURL?=?"content://com.android.calendar/events";??
calanderRemiderURL?=?"content://com.android.calendar/reminders";??

还是老样子,为了让大家更好的理解，我写了一个简单的Demo,大家按照我的步骤一步一步的来:

第一步:新建一个Android工程命名为CalendarDemo.

第二步:修改main.xml布局文件,增加了三个按钮,代码如下:

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<?xml?version="1.0"?encoding="utf-8"?>??
<LinearLayout?xmlns:android="http://schemas.android.com/apk/res/android"??
????android:orientation="vertical"??
????android:layout_width="fill_parent"??
????android:layout_height="fill_parent"??
????>??
???<TextView????
????android:layout_width="fill_parent"???
????????android:layout_height="wrap_content"???
????android:text="@string/hello"??
????/>??
???<Button??
????????android:id="@+id/readUserButton"??
????????android:layout_width="fill_parent"???
????android:layout_height="wrap_content"???
????android:text="Get?a?User"??
????/>?????
????<Button??
????????android:id="@+id/readEventButton"??
????????android:layout_width="fill_parent"???
????android:layout_height="wrap_content"???
????android:text="Get?a?Event"??
????/>??
?????<Button??
????????android:id="@+id/writeEventButton"??
????????android:layout_width="fill_parent"???
????android:layout_height="wrap_content"???
????android:text="Input?a?Event"??
????/>??
</LinearLayout>??

第三步:修改主核心程序CalendarDemo.java，代码如下:

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package?com.tutor.calendardemo;??
??
import?java.util.Calendar;??
??
import?android.app.Activity;??
import?android.content.ContentValues;??
import?android.database.Cursor;??
import?android.net.Uri;??
import?android.os.Build;??
import?android.os.Bundle;??
import?android.view.View;??
import?android.view.View.OnClickListener;??
import?android.widget.Button;??
import?android.widget.Toast;??
??
public?class?CalendarDemo?extends?Activity?implements?OnClickListener?{??
????private?Button?mReadUserButton;??
????private?Button?mReadEventButton;??
????private?Button?mWriteEventButton;??
??????
????private?static?String?calanderURL?=?"";??
????private?static?String?calanderEventURL?=?"";??
????private?static?String?calanderRemiderURL?=?"";??
????//为了兼容不同版本的日历,2.2以后url发生改变??
????static{??
????????if(Integer.parseInt(Build.VERSION.SDK)?>=?8){??
????????????calanderURL?=?"content://com.android.calendar/calendars";??
????????????calanderEventURL?=?"content://com.android.calendar/events";??
????????????calanderRemiderURL?=?"content://com.android.calendar/reminders";??
??
????????}else{??
????????????calanderURL?=?"content://calendar/calendars";??
????????????calanderEventURL?=?"content://calendar/events";??
????????????calanderRemiderURL?=?"content://calendar/reminders";??????????
????????}??
????}??
????@Override??
????public?void?onCreate(Bundle?savedInstanceState)?{??
????????super.onCreate(savedInstanceState);??
????????setContentView(R.layout.main);??
??????????
????????setupViews();??
????}??
??????
????private?void?setupViews(){??
????????mReadUserButton?=?(Button)findViewById(R.id.readUserButton);??
????????mReadEventButton?=?(Button)findViewById(R.id.readEventButton);??
????????mWriteEventButton?=?(Button)findViewById(R.id.writeEventButton);??
????????mReadUserButton.setOnClickListener(this);??
????????mReadEventButton.setOnClickListener(this);??
????????mWriteEventButton.setOnClickListener(this);??
????}??
??????
????@Override??
????public?void?onClick(View?v)?{??
????????if(v?==?mReadUserButton){??
??????????????
????????????Cursor?userCursor?=?getContentResolver().query(Uri.parse(calanderURL),?null,???
????????????????????null,?null,?null);??
????????????if(userCursor.getCount()?>?0){??
????????????????userCursor.moveToFirst();??
????????????????String?userName?=?userCursor.getString(userCursor.getColumnIndex("name"));??
????????????????Toast.makeText(CalendarDemo.this,?userName,?Toast.LENGTH_LONG).show();??
????????????}??
????????}else?if(v?==?mReadEventButton){??
????????????Cursor?eventCursor?=?getContentResolver().query(Uri.parse(calanderEventURL),?null,???
????????????????????null,?null,?null);??
????????????if(eventCursor.getCount()?>?0){??
????????????????eventCursor.moveToLast();??
????????????????String?eventTitle?=?eventCursor.getString(eventCursor.getColumnIndex("title"));??
????????????????Toast.makeText(CalendarDemo.this,?eventTitle,?Toast.LENGTH_LONG).show();??
????????????}??
????????}else?if(v?==?mWriteEventButton){??
????????????//获取要出入的gmail账户的id??
????????????String?calId?=?"";??
????????????Cursor?userCursor?=?getContentResolver().query(Uri.parse(calanderURL),?null,???
????????????????????null,?null,?null);??
????????????if(userCursor.getCount()?>?0){??
????????????????userCursor.moveToFirst();??
????????????????calId?=?userCursor.getString(userCursor.getColumnIndex("_id"));??
??????????????????
????????????}??
????????????ContentValues?event?=?new?ContentValues();??
????????????event.put("title",?"与苍井空小姐动作交流");??
????????????event.put("description",?"Frankie受空姐邀请,今天晚上10点以后将在Sheraton动作交流.lol~");??
????????????[email protected]??
????????????event.put("calendar_id",calId);??
??????????????
????????????Calendar?mCalendar?=?Calendar.getInstance();??
????????????mCalendar.set(Calendar.HOUR_OF_DAY,10);??
????????????long?start?=?mCalendar.getTime().getTime();??
????????????mCalendar.set(Calendar.HOUR_OF_DAY,11);??
????????????long?end?=?mCalendar.getTime().getTime();??
??????????????
????????????event.put("dtstart",?start);??
????????????event.put("dtend",?end);??
????????????event.put("hasAlarm",1);??
??????????????
????????????Uri?newEvent?=?getContentResolver().insert(Uri.parse(calanderEventURL),?event);??
????????????long?id?=?Long.parseLong(?newEvent.getLastPathSegment()?);??
????????????ContentValues?values?=?new?ContentValues();??
????????????values.put(?"event_id",?id?);??
????????????//提前10分钟有提醒??
????????????values.put(?"minutes",?10?);??
????????????getContentResolver().insert(Uri.parse(calanderRemiderURL),?values);??
????????????Toast.makeText(CalendarDemo.this,?"插入事件成功!!!",?Toast.LENGTH_LONG).show();??
????????}??
????}??
}??

第四步:在AndroidManifest.xml中申请权限,代码如下:

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<?xml?version="1.0"?encoding="utf-8"?>??
<manifest?xmlns:android="http://schemas.android.com/apk/res/android"??
??????package="com.tutor.calendardemo"??
??????android:versionCode="1"??
??????android:versionName="1.0">??
????<application?android:icon="@drawable/icon"?android:label="@string/app_name">??
????????<activity?android:name=".CalendarDemo"??
??????????????????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>??
????<uses-sdk?android:minSdkVersion="7"?/>??
????<uses-permission?android:name="android.permission.READ_CALENDAR"/>???
????<uses-permission?android:name="android.permission.WRITE_CALENDAR"/>???
</manifest>???

第五步:运行上述Android工程,查看效果：

????????????????? 运行首界面??????????????????????????????????????????????????????获取登录账户名

???????????????????????? 获取事件title???????????????????????????????????????????? 插入一个事件

???????????????????? 查看日历多了一条事件?????????????????????????????????????? 查看事件详情

Ok今天就讲到这里，呵呵~

源代码下载地址:http://download.csdn.net/source/3004309

转自：http://blog.csdn.net/android_tutor/article/details/6165470