| /* |
| * libjingle |
| * Copyright 2013, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.appspot.apprtc; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog; |
| import android.content.DialogInterface; |
| import android.util.Log; |
| import android.util.TypedValue; |
| import android.widget.ScrollView; |
| import android.widget.TextView; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| |
| /** |
| * Singleton helper: install a default unhandled exception handler which shows |
| * an informative dialog and kills the app. Useful for apps whose |
| * error-handling consists of throwing RuntimeExceptions. |
| * NOTE: almost always more useful to |
| * Thread.setDefaultUncaughtExceptionHandler() rather than |
| * Thread.setUncaughtExceptionHandler(), to apply to background threads as well. |
| */ |
| public class UnhandledExceptionHandler |
| implements Thread.UncaughtExceptionHandler { |
| private static final String TAG = "AppRTCDemoActivity"; |
| private final Activity activity; |
| |
| public UnhandledExceptionHandler(final Activity activity) { |
| this.activity = activity; |
| } |
| |
| public void uncaughtException(Thread unusedThread, final Throwable e) { |
| activity.runOnUiThread(new Runnable() { |
| @Override public void run() { |
| String title = "Fatal error: " + getTopLevelCauseMessage(e); |
| String msg = getRecursiveStackTrace(e); |
| TextView errorView = new TextView(activity); |
| errorView.setText(msg); |
| errorView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 8); |
| ScrollView scrollingContainer = new ScrollView(activity); |
| scrollingContainer.addView(errorView); |
| Log.e(TAG, title + "\n\n" + msg); |
| DialogInterface.OnClickListener listener = |
| new DialogInterface.OnClickListener() { |
| @Override public void onClick( |
| DialogInterface dialog, int which) { |
| dialog.dismiss(); |
| System.exit(1); |
| } |
| }; |
| AlertDialog.Builder builder = |
| new AlertDialog.Builder(activity); |
| builder |
| .setTitle(title) |
| .setView(scrollingContainer) |
| .setPositiveButton("Exit", listener).show(); |
| } |
| }); |
| } |
| |
| // Returns the Message attached to the original Cause of |t|. |
| private static String getTopLevelCauseMessage(Throwable t) { |
| Throwable topLevelCause = t; |
| while (topLevelCause.getCause() != null) { |
| topLevelCause = topLevelCause.getCause(); |
| } |
| return topLevelCause.getMessage(); |
| } |
| |
| // Returns a human-readable String of the stacktrace in |t|, recursively |
| // through all Causes that led to |t|. |
| private static String getRecursiveStackTrace(Throwable t) { |
| StringWriter writer = new StringWriter(); |
| t.printStackTrace(new PrintWriter(writer)); |
| return writer.toString(); |
| } |
| } |