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android - 查询日历 ICS

In lại Tác giả: Walker 123 更新时间:2023-11-29 02:03:54 25 4
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我试着读出所有现有的日历。我试过这里的例子:

http://developer.android.com/guide/topics/providers/calendar-provider.html

但我得到以下编译错误:方法 getContentResolver() 未定义类型 xxx有人可以帮帮我吗?

public HashMap readCalendar() {     
String[] EVENT_PROJECTION = new String[] {
Calendars._ID,
Calendars.OWNER_ACCOUNT,
Calendars.ACCOUNT_NAME,
Calendars.CALENDAR_DISPLAY_NAME
};
String selectionICS = "((" + Calendars.ACCOUNT_NAME + " = ?) AND ("
+ Calendars.ACCOUNT_TYPE + " = ?) AND ("
+ Calendars.OWNER_ACCOUNT + " = ?))";
String[] selectionArgs = new String[] {"VISIBLE=1"}; // or "selected=1" ??

Cursor managedCursor = null;
ContentResolver cr = getContentResolver();
managedCursor = cr.query(calendarUri, EVENT_PROJECTION, selectionICS, selectionArgs, null);selectionICS, selectionArgs, null);


}

câu trả lời hay nhất

getContentResolver() Đúng Context 的一个方法,所以我猜你的类不是派生自 Activity(派生自上下文).

如果您想在 Activity 类之外调用它,则必须使用上下文变量 (context.getContentResolver())。如果您的类是 BroadcastReceiver,则上下文变量作为参数在 onReceive() 中给出。如果没有,您必须在调用它时将其发送到您的方法。

关于android - 查询日历 ICS,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11065492/

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