android app 默认的crash处理流程 (FATAL EXCEPTION)

最新推荐文章于 2024-11-14 22:59:31 发布

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本文介绍了一个定制的异常处理类实现，该类用于捕捉Java应用程序中的未捕获异常，并详细记录异常信息，同时尝试通过对话框等方式向用户提供反馈。在特定情况下，还会收集错误报告并尝试终止进程。

private static class UncaughtHandler implements Thread.UncaughtExceptionHandler {
    public void uncaughtException(Thread t, Throwable e) {
        try {
            // Don't re-enter -- avoid infinite loops if crash-reporting crashes.
            if (mCrashing) return;
            mCrashing = true;

            if (mApplicationObject == null) {
                Clog_e(TAG, "*** FATAL EXCEPTION IN SYSTEM PROCESS: " + t.getName(), e);
            } else {
                StringBuilder message = new StringBuilder();
                message.append("FATAL EXCEPTION: ").append(t.getName()).append("\n");
                final String processName = ActivityThread.currentProcessName();
                if (processName != null) {
                    message.append("Process: ").append(processName).append(", ");
                }
                message.append("PID: ").append(Process.myPid());
                Clog_e(TAG, message.toString(), e);
            }

            // Bring up crash dialog, wait for it to be dismissed
            ActivityManagerNative.getDefault().handleApplicationCrash(
                    mApplicationObject, new ApplicationErrorReport.CrashInfo(e));
        } catch (Throwable t2) {
            try {
                Clog_e(TAG, "Error reporting crash", t2);
            } catch (Throwable t3) {
                // Even Clog_e() fails!  Oh well.
            }
        } finally {
            // Try everything to make sure this process goes away.
            Process.killProcess(Process.myPid());
            System.exit(10);
        }
    }
}

AMP.handleApplicationCrash
    AMS.handleApplicationCrash
        AMS.findAppProcess
        AMS.handleApplicationCrashInner
            AMS.addErrorToDropBox
            AMS.crashApplication
                AMS.makeAppCrashingLocked
                    AMS.startAppProblemLocked
                    ProcessRecord.stopFreezingAllLocked
                        ActivityRecord.stopFreezingScreenLocked
                            WMS.stopFreezingScreenLocked
                                WMS.stopFreezingDisplayLocked
                    AMS.handleAppCrashLocked
                mUiHandler.sendMessage(SHOW_ERROR_MSG)

*** FATAL EXCEPTION IN SYSTEM PROCESS

FATAL EXCEPTION