问题
Im having trouble with this call logs of the device. The code is not returning the logs at all, It's giving false data.
Code:
public void ReadCalls()
{
try {
Android.Content.Context myContext = Android.App.Application.Context;
string myDateToCheck = myServiceRef.myTimeToCheck("CallLog");
if (myDateToCheck==null || myDateToCheck=="")
{myDateToCheck = "0";}
ICursor cursor = myContext.ContentResolver.Query( Android.Net.Uri.Parse ("content://call_log/calls"), null, "Date > ?", new string[]{myDateToCheck }, "Date ASC");
if (cursor.MoveToFirst ()) {
while (!cursor.IsAfterLast ) {
if (cursor.GetLong (cursor.GetColumnIndex (CallLog.Calls.Date)) > long.Parse (myDateToCheck)) {
string Number = cursor.GetString (cursor.GetColumnIndex (CallLog.Calls.Number));
string Name = cursor.GetString (cursor.GetColumnIndex (CallLog.Calls.CachedName));
if (Name == null || Name == "") {
Name = "Unknown";
}
string Date = cursor.GetString (cursor.GetColumnIndex (CallLog.Calls.Date));
string Duration = cursor.GetString (cursor.GetColumnIndex (CallLog.Calls.Duration));
string Type = cursor.GetString (cursor.GetColumnIndex (CallLog.Calls.Type));
if (Number == "0") {
Number = "Unknown";
} else if (Number == "-1") {
Number = "Unknown";
}
long num = long.Parse (Date);
Java.Text.SimpleDateFormat simpleDateFormat = new Java.Text.SimpleDateFormat ("yyyy-MM-dd HH:mm:ss");
DateTime dateTime = new DateTime (1970, 1, 1).AddMilliseconds ((double)num);
dateTime = dateTime.AddMilliseconds (simpleDateFormat.TimeZone.GetOffset (num));
if (Type == "1") {
Type = "Outgoing";
} else if (Type == "2") {
Type = "Incoming";
} else if (Type == "3") {
Type = "Missed Call";
}
// now need to write it to a database
MyCallLog myLine = new MyCallLog {
TheNumber = Number ,
TheName = Name ,
TheTime = dateTime.ToString() ,
TheDirection = Type ,
TheDuration = Duration
};
string output = Newtonsoft.Json.JsonConvert.SerializeObject (myLine );
myServiceRef.myDatabaseConnection (output);
} else {
break;
}
cursor.MoveToNext ();
}
}
}catch{
}
}
The number is always "-1". The name is always blank, and its always an outgoing call.
It gives a datestamp but not accurate.
回答1:
//static class to convert milisecond to datetime
static class ConvertToDate
{
static readonly DateTime UnixEpochStart = DateTime.SpecifyKind(new DateTime(1970, 1, 1), DateTimeKind.Utc); //Coverting date in to universal
public static DateTime ToDateTimeFromEpoch(this long epochTime)
{
DateTime result = UnixEpochStart.AddMilliseconds(epochTime);
return result;
}
}
Above code might help you. I am also new to Xamarin and above code gives me the appropriate date time. Please let me know if you have any queries.
回答2:
public class ContactsAdapter : BaseAdapter
{
Activity activity;
List<Contact> contactList;
public ContactsAdapter(Activity activity)
{
this.activity = activity;
FillContacts();
}
void FillContacts()
{
var uri = calllog.ContentUri;
//var uri = ContactsContract.Contacts.ContentUri;
string[] projection = {
calllog.Number,
calllog.Date,
calllog.Duration,
calllog.Type,
calllog.CachedName,
calllog.CachedPhotoId
};
// CursorLoader introduced in Honeycomb (3.0, API11)
var loader = new CursorLoader(activity, uri, projection, null, null, null);
var cursor = (ICursor)loader.LoadInBackground();
contactList = new List<Contact>();
if (cursor.MoveToFirst())
{
do
{
contactList.Add(new Contact
{
Number = cursor.GetString(cursor.GetColumnIndex(projection[0])),
Date = cursor.GetLong(cursor.GetColumnIndex(projection[1])),
Duration = cursor.GetString(cursor.GetColumnIndex(projection[2])),
Type = cursor.GetString(cursor.GetColumnIndex(projection[3])),
Name = cursor.GetString(cursor.GetColumnIndex(projection[4])),
PhotoId = cursor.GetString(cursor.GetColumnIndex(projection[5]))
});
} while (cursor.MoveToNext());
}
}
public override int Count
{
get { return contactList.Count; }
}
public override Java.Lang.Object GetItem(int position)
{
return null;
}
public override long GetItemId(int position)
{
return 0;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView ?? activity.LayoutInflater.Inflate(Resource.Layout.CallLogItems, parent, false);
var callNum = view.FindViewById<TextView>(Resource.Id.NumTxtVw);
var callType = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
var calldate = view.FindViewById<TextView>(Resource.Id.CallTime);
var name = view.FindViewById<TextView>(Resource.Id.CallerNameTxtVw);
var contactImg = view.FindViewById<ImageView>(Resource.Id.ContactImgVw);
callNum.Text = contactList[position].Number;
calldate.Text = ConvertToDate.ToDateTimeFromEpoch(contactList[position].Date).ToString();// ToDateTimeFromEpoch(contactList[position].Date).ToString();
if (string.IsNullOrWhiteSpace(contactList[position].Name))
{
name.Text = "Unkown";
}
else
{
name.Text = contactList[position].Name;
}
if (contactList[position].PhotoId == null)
{
contactImg = view.FindViewById<ImageView>(Resource.Id.ContactImgVw);
contactImg.SetImageResource(Resource.Drawable.contactimg);
}
else
{
contactImg = view.FindViewById<ImageView>(Resource.Id.ContactImgVw);
contactImg.SetImageResource(Resource.Drawable.contactimg);
}
if (contactList[position].Type == "1")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.incoming);
}
else
if (contactList[position].Type == "2")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.outgoing);
}
else
if (contactList[position].Type == "3")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.misssedcall);
}
else
if (contactList[position].Type == "4")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.voicemail);
}
else
if (contactList[position].Type == "5")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.reject);
}
else
if (contactList[position].Type == "6")
{
var contactImage = view.FindViewById<ImageView>(Resource.Id.TypeIndicatImgVw);
contactImage.SetImageResource(Resource.Drawable.blocked);
}
return view;
}
}
来源：https://stackoverflow.com/questions/37542452/xamarin-c-sharp-android-call-logs