basic notifications

1 files changed, 114 insertions, 0 deletions

diff --git a/src/de/gultsch/chat/utils/UIHelper.java b/src/de/gultsch/chat/utils/UIHelper.java
new file mode 100644
index 00000000..c1bc7470
--- /dev/null
+++ b/src/de/gultsch/chat/utils/UIHelper.java
@@ -0,0 +1,114 @@
+package de.gultsch.chat.utils;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import de.gultsch.chat.R;
+import de.gultsch.chat.entities.Conversation;
+import de.gultsch.chat.ui.ConversationActivity;
+
+import android.app.Notification;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.net.Uri;
+import android.preference.PreferenceManager;
+import android.support.v4.app.NotificationCompat;
+import android.support.v4.app.TaskStackBuilder;
+import android.util.DisplayMetrics;
+import android.util.Log;
+
+public class UIHelper {
+	public static String readableTimeDifference(long time) {
+		if (time == 0) {
+			return "just now";
+		}
+		Date date = new Date(time);
+		long difference = (System.currentTimeMillis() - time) / 1000;
+		if (difference < 60) {
+			return "just now";
+		} else if (difference < 60 * 10) {
+			return difference / 60 + " min ago";
+		} else if (difference < 60 * 60 * 24) {
+			SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
+			return sdf.format(date);
+		} else {
+			SimpleDateFormat sdf = new SimpleDateFormat("M/D");
+			return sdf.format(date);
+		}
+	}
+
+	public static Bitmap getUnknownContactPicture(String name, int size) {
+		String firstLetter = name.substring(0, 1).toUpperCase();
+		String centerLetter = name.substring(name.length() / 2,
+				(name.length() / 2) + 1);
+
+		int holoColors[] = { 0xFF1da9da, 0xFFb368d9, 0xFF83b600, 0xFFffa713,
+				0xFFe92727 };
+
+		int color = holoColors[centerLetter.charAt(0) % holoColors.length];
+
+		Bitmap bitmap = Bitmap
+				.createBitmap(size, size, Bitmap.Config.ARGB_8888);
+		Canvas canvas = new Canvas(bitmap);
+
+		bitmap.eraseColor(color);
+
+		Paint paint = new Paint();
+		paint.setColor(0xffe5e5e5);
+		paint.setTextSize((float) (size * 0.9));
+		paint.setAntiAlias(true);
+		Rect rect = new Rect();
+		paint.getTextBounds(firstLetter, 0, 1, rect);
+		float width = paint.measureText(firstLetter);
+		canvas.drawText(firstLetter, (size / 2) - (width / 2), (size / 2)
+				+ (rect.height() / 2), paint);
+
+		return bitmap;
+	}
+	
+	public static Notification getUnreadMessageNotification(Context context, Conversation conversation) {
+		
+		SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
+		String ringtone = sharedPref.getString("notification_ringtone",null);
+		
+		Resources res = context.getResources();
+		NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context);
+		mBuilder.setLargeIcon(UIHelper.getUnknownContactPicture(conversation.getName(),(int) res.getDimension(android.R.dimen.notification_large_icon_width)));
+		mBuilder.setContentTitle(conversation.getName());
+		mBuilder.setContentText(conversation.getLatestMessage());
+		mBuilder.setSmallIcon(R.drawable.notification);
+		if (ringtone!=null) {
+			mBuilder.setSound(Uri.parse(ringtone));
+		}
+		
+		TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
+		stackBuilder.addParentStack(ConversationActivity.class);
+		
+		Intent viewConversationIntent = new Intent(context,ConversationActivity.class);
+		viewConversationIntent.setAction(Intent.ACTION_VIEW);
+		viewConversationIntent.putExtra(
+				ConversationActivity.CONVERSATION,
+				conversation.getUuid());
+		viewConversationIntent
+				.setType(ConversationActivity.VIEW_CONVERSATION);
+		
+		stackBuilder.addNextIntent(viewConversationIntent);
+		
+		PendingIntent resultPendingIntent =
+		        stackBuilder.getPendingIntent(
+		            0,
+		            PendingIntent.FLAG_UPDATE_CURRENT
+		        );
+
+		
+		mBuilder.setContentIntent(resultPendingIntent);
+		return mBuilder.build();
+	}
+}