/*
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* Copyright 2013 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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package org.appspot.apprtc;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.content.DialogInterface;
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import android.util.Log;
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import android.util.TypedValue;
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import android.widget.ScrollView;
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import android.widget.TextView;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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/**
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* Singleton helper: install a default unhandled exception handler which shows
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* an informative dialog and kills the app. Useful for apps whose
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* error-handling consists of throwing RuntimeExceptions.
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* NOTE: almost always more useful to
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* Thread.setDefaultUncaughtExceptionHandler() rather than
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* Thread.setUncaughtExceptionHandler(), to apply to background threads as well.
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*/
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public class UnhandledExceptionHandler implements Thread.UncaughtExceptionHandler {
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private static final String TAG = "AppRTCMobileActivity";
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private final Activity activity;
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public UnhandledExceptionHandler(final Activity activity) {
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this.activity = activity;
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}
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// Returns the Message attached to the original Cause of |t|.
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private static String getTopLevelCauseMessage(Throwable t) {
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Throwable topLevelCause = t;
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while (topLevelCause.getCause() != null) {
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topLevelCause = topLevelCause.getCause();
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}
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return topLevelCause.getMessage();
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}
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// Returns a human-readable String of the stacktrace in |t|, recursively
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// through all Causes that led to |t|.
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private static String getRecursiveStackTrace(Throwable t) {
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StringWriter writer = new StringWriter();
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t.printStackTrace(new PrintWriter(writer));
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return writer.toString();
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}
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@Override
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public void uncaughtException(Thread unusedThread, final Throwable e) {
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e.printStackTrace();
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System.out.println("UnhandledExceptionHandler.uncaughtException " + e.getMessage());
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// activity.runOnUiThread(new Runnable() {
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// @Override
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// public void run() {
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// String title = "Fatal error: " + getTopLevelCauseMessage(e);
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// String msg = getRecursiveStackTrace(e);
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// TextView errorView = new TextView(activity);
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// errorView.setText(msg);
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// errorView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 8);
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// ScrollView scrollingContainer = new ScrollView(activity);
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// scrollingContainer.addView(errorView);
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// Log.e(TAG, title + "\n\n" + msg);
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// DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
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// @Override
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// public void onClick(DialogInterface dialog, int which) {
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// dialog.dismiss();
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// System.exit(1);
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// }
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// };
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// AlertDialog.Builder builder = new AlertDialog.Builder(activity);
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// builder.setTitle(title)
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// .setView(scrollingContainer)
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// .setPositiveButton("Exit", listener)
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// .show();
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// }
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// });
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}
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}
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