Bug fixes:

* make sure we never have an invalid startIndex in PwGroup.SearchEvalAdd
 * make sure AndroidContentStorage does never throw (not if permission denial exception occurs) and make sure we always return a reason for read-only. Also don't return read-only when it's not.
 * StopListening doesn't log Invalid State Exception as unexpected

src/KeePassLib2Android/PwGroup.cs

@@ -990,7 +990,7 @@ namespace KeePassLib
 					if (contextString.Length > SearchContextStringMaxLength)
 					{
 						// Start 10% before actual data, and don't run over
-						var startPos = Math.Min(matchPos - (SearchContextStringMaxLength / 10), contextString.Length - SearchContextStringMaxLength);
+						var startPos = Math.Max(0, Math.Min(matchPos - (SearchContextStringMaxLength / 10), contextString.Length - SearchContextStringMaxLength));
 						contextString = "… " + contextString.Substring(startPos, SearchContextStringMaxLength) + ((startPos + SearchContextStringMaxLength < contextString.Length) ? " …" : null);
 					}
 					resultContexts[pe.Uuid] = new KeyValuePair<string, string>(contextFieldName, contextString);

src/Kp2aBusinessLogic/Io/AndroidContentStorage.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Android.Content;
+using Android.Database;
 using Android.OS;
 using Android.Provider;
 using KeePassLib.Serialization;
@@ -209,22 +210,23 @@ namespace keepass2android.Io
 
 		public bool IsReadOnly(IOConnectionInfo ioc, OptionalOut<UiStringKey> reason = null)
 		{
-			//on pre-Kitkat devices, we can't write content:// files
-			if (!IsKitKatOrLater)
-			{
-				Kp2aLog.Log("File is read-only because we're not on KitKat or later.");
-				if (reason != null)
-					reason.Result = UiStringKey.ReadOnlyReason_PreKitKat;
-				return true;
-			}
+			ICursor cursor = null;
+			try
+			{	
+				//on pre-Kitkat devices, we can't write content:// files
+				if (!IsKitKatOrLater)
+				{
+					Kp2aLog.Log("File is read-only because we're not on KitKat or later.");
+					if (reason != null)
+						reason.Result = UiStringKey.ReadOnlyReason_PreKitKat;
+					return true;
+				}
 				
 
-			//KitKat or later...
-			var uri = Android.Net.Uri.Parse(ioc.Path);
-			var cursor = _ctx.ContentResolver.Query(uri, null, null, null, null, null);
+				//KitKat or later...
+				var uri = Android.Net.Uri.Parse(ioc.Path);
+				cursor = _ctx.ContentResolver.Query(uri, null, null, null, null, null);
 
-			try
-			{
 				if (cursor != null && cursor.MoveToFirst())
 				{
 					int flags = cursor.GetInt(cursor.GetColumnIndex(DocumentsContract.Document.ColumnFlags));
@@ -235,14 +237,23 @@ namespace keepass2android.Io
 							reason.Result = UiStringKey.ReadOnlyReason_ReadOnlyFlag;
 						return true;
 					}
+					else return false;
 				}
+				else throw new Exception("couldn't move to first result element");
+			}
+			catch (Exception e)
+			{
+				Kp2aLog.LogUnexpectedError(e);
+				//better return false here. We don't really know what happened (as this is unexpected).
+				//let the user try to write the file. If it fails they will get an exception string.
+				return false;
 			}
 			finally
 			{
 				if (cursor != null)
 					cursor.Close();
 			}
-			return true;
+			
 		}
 	}
 

src/keepass2android/FingerprintSamsungIdentifier.cs

@@ -134,7 +134,11 @@ namespace keepass2android
 			}
 			catch (IllegalStateException ise)
 			{
-				Kp2aLog.LogUnexpectedError(ise);
+				Kp2aLog.Log(ise.ToString());
+			}
+			catch (System.Exception e)
+			{
+				Kp2aLog.LogUnexpectedError(e);
 			}
 		}
 	}

src/keepass2android/Properties/AndroidManifest_net.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 
-			android:versionCode="71" 
-			android:versionName="1.0.0 preview 4" 
+			android:versionCode="73" 
+			android:versionName="1.0.0 preview 6" 
 			package="keepass2android.keepass2android" 
 			android:installLocation="auto">
 	<uses-sdk android:minSdkVersion="14" android:targetSdkVersion="23" />

src/keepass2android/Resources/values/strings.xml

@@ -616,6 +616,7 @@
   
   
 	<string name="PreviewWarning">Please note! This is a preview release and might come with some flaws! If you experience *anything* unexpected, please let me know (on Codeplex or by email).</string>
+  <string name="PreviewErrorReports"> Whenever you see a question if you want to enable error reports, please do so!</string>
 	
 	<string name="Continue">Continue</string>
 	<string name="NoFilenameWarning">The URI you have entered does not look like a filename. Are you sure this is a valid file?</string>
@@ -655,7 +656,7 @@
   </string>
 
   <string name="ChangeLog_1_0_0">
-    Version 1.0.0 - preview 4\n
+    Version 1.0.0 - preview 5\n
     * Fingerprint Unlock (requires Android 6.0+ or a Samsung device)\n
     * Added support for entry templates\n
     * Added "work offline" mode\n
@@ -663,6 +664,9 @@
     * Auto-complete mode for field names\n
     * Allow to remove items from recent files list\n
     * Request permissions at runtime in Android 6.0\n
+    * Bug fixes (in built-in keyboard, when selecting icons)\n
+    * Included option to send error reports\n
+    * Added help messages at several points\n
     * more to come...\n
   </string>