Hand-made CrashReport of Android Library potatotips #22 @petitviolet

About me • @petitviolet • Fringe81 Co., Ltd. • ޿ࠂSDKͷAndroid/iOS։ൃ • ࠷ۙ͸Scalaॻ͍ͯ·͢

ΫϥογϡϨϙʔτ

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CrashReport • ΞϓϦέʔγϣϯ͕Ϋϥογϡͨ࣌͠ͷঢ়گ ΛϨϙʔτͱͯ͠ૹ৴ • ୺຤ͷछྨ • OS • ελοΫτϨʔε • etc.

crashlytics https://try.crashlytics.com/

ACRA https://github.com/ACRA/acra

Desire • ϥΠϒϥϦىҼͷΫϥογϡϩά΋ऩू͍ͨ͠ • ΞϓϦͷΫϥογϡϩά͸ऩू͠ͳ͍ • ͦΕ͸Crashlytics౳ʹ͓೚ͤ • ಠࣗͷσʔλ͕ཉ͍͠

UncaughtException • (جຊతʹ)Ϋϥογϡ͢Δͱ͖ʹඈͿྫ֎ • catch͞Εͳ͔ͬͨͷͰuncaught • ErrorͰ͸ͳ͘Exception

UncaughtExceptionHandler • UncaughtExceptionΛͲ͏ѻ͏͔ • σϑΥϧτͷಈ࡞͸ getDefaultUncaughtExceptionHandler • Defaultͷಈ࡞Λյ͞ͳ͍ͨΊʹอଘ

جຊ෦෼ 
 class MyUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
 private static final String PACKAGE_NAME = BuildConfig.APPLICATION_ID;
 
 private final Thread.UncaughtExceptionHandler mDefaultHandler;
 private WeakReference mContext;
 volatile private static boolean sCrashing = false;
 
 public MyUncaughtExceptionHandler(Context context) {
 mContext = new WeakReference<>(context.getApplicationContext());
 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
 }
 }

جຊ෦෼ 
 class MyUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
 private static final String PACKAGE_NAME = BuildConfig.APPLICATION_ID;
 
 private final Thread.UncaughtExceptionHandler mDefaultHandler;
 private WeakReference mContext;
 volatile private static boolean sCrashing = false;
 
 public MyUncaughtExceptionHandler(Context context) {
 mContext = new WeakReference<>(context.getApplicationContext());
 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
 }
 } UncaughtExceptionHandlerΛܧঝ

جຊ෦෼ 
 class MyUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
 private static final String PACKAGE_NAME = BuildConfig.APPLICATION_ID;
 
 private final Thread.UncaughtExceptionHandler mDefaultHandler;
 private WeakReference mContext;
 volatile private static boolean sCrashing = false;
 
 public MyUncaughtExceptionHandler(Context context) {
 mContext = new WeakReference<>(context.getApplicationContext());
 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
 }
 } DefaultͷUncaughtExceptionHandlerΛอଘ UncaughtExceptionHandlerΛܧঝ

جຊ෦෼ @Override
 public void uncaughtException(final Thread thread, final Throwable ex) {
 if (sCrashing) {
 mDefaultHandler.uncaughtException(thread, ex);
 return;
 }
 sCrashing = true;
 StackTraceElement[] stackTraceElements = ex.getStackTrace();
 
 boolean inLibraryException = false;
 for (StackTraceElement stackTraceElement : stackTraceElements) {
 if (stackTraceElement.getClassName().contains(PACKAGE_NAME)) {
 inLibraryException = true;
 break;
 }
 }
 
 // ϥΠϒϥϦ಺ͰͷΫϥογϡͩͬͨ৔߹͸ϩάΛૹΔ
 if (inLibraryException) {
 try {
 sendCrashReport(ex);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 
 // ϝΠϯεϨουͩͬͨ৔߹͸ࢮ͵͔͠ແ͍
 if (thread.getId() == Looper.getMainLooper().getThread().getId() || !inLibraryException) {
 mDefaultHandler.uncaughtException(thread, ex);
 }
 }

@Override
 public void uncaughtException(final Thread thread, final Throwable ex) {
 if (sCrashing) {
 mDefaultHandler.uncaughtException(thread, ex);
 return;
 }
 sCrashing = true;
 StackTraceElement[] stackTraceElements = ex.getStackTrace();
 
 boolean inLibraryException = false;
 for (StackTraceElement stackTraceElement : stackTraceElements) {
 if (stackTraceElement.getClassName().contains(PACKAGE_NAME)) {
 inLibraryException = true;
 break;
 }
 } ͢ͰʹΫϥογϡͨ͠ޙͳΒࢮ͵

@Override
 public void uncaughtException(final Thread thread, final Throwable ex) {
 if (sCrashing) {
 mDefaultHandler.uncaughtException(thread, ex);
 return;
 }
 sCrashing = true;
 StackTraceElement[] stackTraceElements = ex.getStackTrace();
 
 boolean inLibraryException = false;
 for (StackTraceElement stackTraceElement : stackTraceElements) {
 if (stackTraceElement.getClassName().contains(PACKAGE_NAME)) {
 inLibraryException = true;
 break;
 }
 } ͢ͰʹΫϥογϡͨ͠ޙͳΒࢮ͵ Library಺ͷΫϥογϡ͔Ͳ͏͔൑ఆ

// ϥΠϒϥϦ಺ͰͷΫϥογϡͩͬͨ৔߹͸ϩάΛૹΔ
 if (inLibraryException) {
 try {
 sendCrashReport(ex);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 
 // ϝΠϯεϨουͩͬͨ৔߹͸ࢮ͵͔͠ແ͍
 if (thread.getId() == Looper.getMainLooper().getThread().getId() || !inLibraryException) {
 mDefaultHandler.uncaughtException(thread, ex);
 }
 }

// ϥΠϒϥϦ಺ͰͷΫϥογϡͩͬͨ৔߹͸ϩάΛૹΔ
 if (inLibraryException) {
 try {
 sendCrashReport(ex);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 
 // ϝΠϯεϨουͩͬͨ৔߹͸ࢮ͵͔͠ແ͍
 if (thread.getId() == Looper.getMainLooper().getThread().getId() || !inLibraryException) {
 mDefaultHandler.uncaughtException(thread, ex);
 }
 } Library಺ͷΫϥογϡͳΒϩάૹ৴

// ϥΠϒϥϦ಺ͰͷΫϥογϡͩͬͨ৔߹͸ϩάΛૹΔ
 if (inLibraryException) {
 try {
 sendCrashReport(ex);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 
 // ϝΠϯεϨουͩͬͨ৔߹͸ࢮ͵͔͠ແ͍
 if (thread.getId() == Looper.getMainLooper().getThread().getId() || !inLibraryException) {
 mDefaultHandler.uncaughtException(thread, ex);
 }
 } Library֎ͷΫϥογϡ͔UIεϨουͳΒࢮ͵ Library಺ͷΫϥογϡͳΒϩάૹ৴

جຊ෦෼ @Override
 public void uncaughtException(final Thread thread, final Throwable ex) {
 if (sCrashing) {
 mDefaultHandler.uncaughtException(thread, ex);
 return;
 }
 sCrashing = true;
 StackTraceElement[] stackTraceElements = ex.getStackTrace();
 
 boolean inLibraryException = false;
 for (StackTraceElement stackTraceElement : stackTraceElements) {
 if (stackTraceElement.getClassName().contains(PACKAGE_NAME)) {
 inLibraryException = true;
 break;
 }
 }
 
 // ϥΠϒϥϦ಺ͰͷΫϥογϡͩͬͨ৔߹͸ϩάΛૹΔ
 if (inLibraryException) {
 try {
 sendCrashReport(ex);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 
 // ϝΠϯεϨουͩͬͨ৔߹͸ࢮ͵͔͠ແ͍
 if (thread.getId() == Looper.getMainLooper().getThread().getId() || !inLibraryException) {
 mDefaultHandler.uncaughtException(thread, ex);
 }
 } Library಺ͷΫϥογϡ͔Ͳ͏͔൑ఆ Library಺ͷΫϥογϡͳΒϩάૹ৴ Library֎ͷΫϥογϡ͔UIεϨουͳΒࢮ͵ ͢ͰʹΫϥογϡͨ͠ޙͳΒࢮ͵

େࣄͳ͜ͱ • ϥΠϒϥϦ΋ΫϥογϡϩάΈͯվળ • ΞϓϦͷअຐΛ͠ͳ͍ • σϑΥϧτͷಈ࡞Λࡴ͞ͳ͍ • ϑϦʔζͤ͞ͳ͍Α͏ʹ • ແݶΫϥογϡ͠ͳ͍Α͏ʹ؅ཧ • ໘౗Ͱ΋ϑϥά؅ཧ