talk/examples/android/src/org/appspot/apprtc/UnhandledExceptionHandler.java - Issue 1235563006: Move talk/examples/* to webrtc/examples.

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Issue 1235563006: Move talk/examples/* to webrtc/examples. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master

Patch Set: 201508051337 Created 5 years, 4 months ago

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1 /*

2 * libjingle

3 * Copyright 2013 Google Inc.

4 *

5 * Redistribution and use in source and binary forms, with or without

6 * modification, are permitted provided that the following conditions are met:

7 *

8 * 1. Redistributions of source code must retain the above copyright notice,

9 * this list of conditions and the following disclaimer.

10 * 2. Redistributions in binary form must reproduce the above copyright notice,

11 * this list of conditions and the following disclaimer in the documentation

12 * and/or other materials provided with the distribution.

13 * 3. The name of the author may not be used to endorse or promote products

14 * derived from this software without specific prior written permission.

15 *

16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO

19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

26 */

27

28 package org.appspot.apprtc;

29

30 import android.app.Activity;

31 import android.app.AlertDialog;

32 import android.content.DialogInterface;

33 import android.util.Log;

34 import android.util.TypedValue;

35 import android.widget.ScrollView;

36 import android.widget.TextView;

37

38 import java.io.PrintWriter;

39 import java.io.StringWriter;

40

41 /**

42 * Singleton helper: install a default unhandled exception handler which shows

43 * an informative dialog and kills the app. Useful for apps whose

44 * error-handling consists of throwing RuntimeExceptions.

45 * NOTE: almost always more useful to

46 * Thread.setDefaultUncaughtExceptionHandler() rather than

47 * Thread.setUncaughtExceptionHandler(), to apply to background threads as well.

48 */

49 public class UnhandledExceptionHandler

50 implements Thread.UncaughtExceptionHandler {

51 private static final String TAG = "AppRTCDemoActivity";

52 private final Activity activity;

53

54 public UnhandledExceptionHandler(final Activity activity) {

55 this.activity = activity;

56 }

57

58 public void uncaughtException(Thread unusedThread, final Throwable e) {

59 activity.runOnUiThread(new Runnable() {

60 @Override public void run() {

61 String title = "Fatal error: " + getTopLevelCauseMessage(e);

62 String msg = getRecursiveStackTrace(e);

63 TextView errorView = new TextView(activity);

64 errorView.setText(msg);

65 errorView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 8);

66 ScrollView scrollingContainer = new ScrollView(activity);

67 scrollingContainer.addView(errorView);

68 Log.e(TAG, title + "\n\n" + msg);

69 DialogInterface.OnClickListener listener =

70 new DialogInterface.OnClickListener() {

71 @Override public void onClick(

72 DialogInterface dialog, int which) {

73 dialog.dismiss();

74 System.exit(1);

75 }

76 };

77 AlertDialog.Builder builder =

78 new AlertDialog.Builder(activity);

79 builder

80 .setTitle(title)

81 .setView(scrollingContainer)

82 .setPositiveButton("Exit", listener).show();

83 }

84 });

85 }

86

87 // Returns the Message attached to the original Cause of \|t\|.

88 private static String getTopLevelCauseMessage(Throwable t) {

89 Throwable topLevelCause = t;

90 while (topLevelCause.getCause() != null) {

91 topLevelCause = topLevelCause.getCause();

92 }

93 return topLevelCause.getMessage();

94 }

95

96 // Returns a human-readable String of the stacktrace in \|t\|, recursively

97 // through all Causes that led to \|t\|.

98 private static String getRecursiveStackTrace(Throwable t) {

99 StringWriter writer = new StringWriter();

100 t.printStackTrace(new PrintWriter(writer));

101 return writer.toString();

102 }

103 }

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