Hey – it’s been a while.
No time like the present to write a post about Android coding.
Specifically: “how do I create a calendar event from within a WebView in Android?”
First, let’s talk game plan. I am going to construct an url “scheme” that will indicate to a handler that I want to create a calendar event, and not navigate to a web page; then, I need to call an Intent that will allow the event to be created.
Easy Peasy.
So, for my dates that I wish to portray on a web view, I do something like the following:
<a href='date:beginmonth, beginday, beginyear, endmonth, endday, endyear, My Event Description'> My event link</a>
Then, I construct a shouldOverrideUrlLoading handler that will detect that a date: is being clicked, and handle it specially (see the code below):
final WebView crimeView = (WebView) findViewById(R.id.webview_crime);
crimeView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading (WebView view, String url)
{
if (url.startsWith("date:")) {
Log.d(this.getClass().getCanonicalName(),url);
Calendar beginCal = Calendar.getInstance();
Calendar endCal = Calendar.getInstance();
Date beginDate = new Date(0, 0, 0);
Date endDate = new Date(0, 0, 0);
String parsed = url.substring(5);
String[] components = parsed.split(",");
beginDate.setMonth(Integer.parseInt(components[0]));
beginDate.setDate(Integer.parseInt(components[1]));
beginDate.setYear(Integer.parseInt(components[2]));
beginCal.setTime(beginDate);
endDate.setMonth(Integer.parseInt(components[3]));
endDate.setDate(Integer.parseInt(components[4]));
endDate.setYear(Integer.parseInt(components[5]));
endCal.setTime(endDate);
calendarevent(beginCal, endCal, components[6]);
return true;
}
return false;
}
});
Finally, we need code to invoke the Calendar intent. It looks like the following:
// Create a calendar event
public void calendarevent(Calendar begintime, Calendar endtime,
String eventName)
{
Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setType("vnd.android.cursor.item/event");
intent.putExtra("beginTime", begintime.getTimeInMillis());
intent.putExtra("allDay", false);
intent.putExtra("rrule", "FREQ=YEARLY");
intent.putExtra("endTime", endtime.getTimeInMillis()+60*60*1000);
intent.putExtra("title", eventName);
startActivity(intent);
}
And that, as they say, is that.
