From baf0d6478750bb59e3f883fb7f814a92f27b8a29 Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel@gultsch.de>
Date: Sun, 9 Mar 2014 13:21:28 +0100
Subject: [PATCH] exception handler

---
 .../services/XmppConnectionService.java       |  2 +
 .../siacs/conversations/ui/XmppActivity.java  |  9 ++++
 .../conversations/utils/ExceptionHandler.java | 41 +++++++++++++++++++
 .../conversations/utils/ExceptionHelper.java  | 11 +++++
 4 files changed, 63 insertions(+)
 create mode 100644 src/eu/siacs/conversations/utils/ExceptionHandler.java
 create mode 100644 src/eu/siacs/conversations/utils/ExceptionHelper.java

diff --git a/src/eu/siacs/conversations/services/XmppConnectionService.java b/src/eu/siacs/conversations/services/XmppConnectionService.java
index da43cb164..5adfa981d 100644
--- a/src/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/eu/siacs/conversations/services/XmppConnectionService.java
@@ -29,6 +29,7 @@ import eu.siacs.conversations.persistance.OnPhoneContactsMerged;
 import eu.siacs.conversations.ui.OnAccountListChangedListener;
 import eu.siacs.conversations.ui.OnConversationListChangedListener;
 import eu.siacs.conversations.ui.OnRosterFetchedListener;
+import eu.siacs.conversations.utils.ExceptionHelper;
 import eu.siacs.conversations.utils.MessageParser;
 import eu.siacs.conversations.utils.OnPhoneContactsLoadedListener;
 import eu.siacs.conversations.utils.PhoneHelper;
@@ -426,6 +427,7 @@ public class XmppConnectionService extends Service {
 
 	@Override
 	public void onCreate() {
+		ExceptionHelper.init(getApplicationContext());
 		databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 		this.accounts = databaseBackend.getAccounts();
 
diff --git a/src/eu/siacs/conversations/ui/XmppActivity.java b/src/eu/siacs/conversations/ui/XmppActivity.java
index 18df6f5b6..2f1b1d502 100644
--- a/src/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/eu/siacs/conversations/ui/XmppActivity.java
@@ -3,6 +3,7 @@ package eu.siacs.conversations.ui;
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
+import eu.siacs.conversations.utils.ExceptionHelper;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.AlertDialog.Builder;
@@ -10,6 +11,7 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
+import android.os.Bundle;
 import android.os.IBinder;
 import android.view.MenuItem;
 import android.view.View;
@@ -19,6 +21,7 @@ public abstract class XmppActivity extends Activity {
 	public XmppConnectionService xmppConnectionService;
 	public boolean xmppConnectionServiceBound = false;
 	protected boolean handledViewIntent = false;
+	
 	protected ServiceConnection mConnection = new ServiceConnection() {
 
 		@Override
@@ -93,4 +96,10 @@ public abstract class XmppActivity extends Activity {
 		}
 		return super.onOptionsItemSelected(item);
 	}
+	
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		ExceptionHelper.init(getApplicationContext());
+	}
 }
diff --git a/src/eu/siacs/conversations/utils/ExceptionHandler.java b/src/eu/siacs/conversations/utils/ExceptionHandler.java
new file mode 100644
index 000000000..01cfebbbd
--- /dev/null
+++ b/src/eu/siacs/conversations/utils/ExceptionHandler.java
@@ -0,0 +1,41 @@
+package eu.siacs.conversations.utils;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.lang.Thread.UncaughtExceptionHandler;
+
+import android.content.Context;
+
+public class ExceptionHandler implements UncaughtExceptionHandler {
+	
+	private UncaughtExceptionHandler defaultHandler;
+	private Context context;
+	public ExceptionHandler(Context context) {
+		this.context = context;
+		this.defaultHandler = Thread.getDefaultUncaughtExceptionHandler();
+	}
+	@Override
+	public void uncaughtException(Thread thread, Throwable ex) {
+		Writer result = new StringWriter();
+        PrintWriter printWriter = new PrintWriter(result);
+        ex.printStackTrace(printWriter);
+        String stacktrace = result.toString();
+        printWriter.close();
+        try {
+			OutputStream os = context.openFileOutput("stacktrace.txt",Context.MODE_PRIVATE);
+			os.write(stacktrace.getBytes());
+		} catch (FileNotFoundException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		this.defaultHandler.uncaughtException(thread, ex);
+	}
+
+}
diff --git a/src/eu/siacs/conversations/utils/ExceptionHelper.java b/src/eu/siacs/conversations/utils/ExceptionHelper.java
new file mode 100644
index 000000000..def184d0d
--- /dev/null
+++ b/src/eu/siacs/conversations/utils/ExceptionHelper.java
@@ -0,0 +1,11 @@
+package eu.siacs.conversations.utils;
+
+import android.content.Context;
+
+public class ExceptionHelper {
+	public static void init(Context context) {
+		if(!(Thread.getDefaultUncaughtExceptionHandler() instanceof ExceptionHandler)) {
+		    Thread.setDefaultUncaughtExceptionHandler(new ExceptionHandler(context));
+		}
+	}
+}