ActivityThread main

public static void main(String[] args) {    Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "ActivityThreadMain");    SamplingProfilerIntegration.start();

    // CloseGuard defaults to true and can be quite spammy.  We    // disable it here, but selectively enable it later (via    // StrictMode) on debug builds, but using DropBox, not logs.    CloseGuard.setEnabled(false);

    Environment.initForCurrentUser();

    // Set the reporter for event logging in libcore    EventLogger.setReporter(new EventLoggingReporter());

    AndroidKeyStoreProvider.install();

    // Make sure TrustedCertificateStore looks in the right place for CA certificates    final File configDir = Environment.getUserConfigDirectory(UserHandle.myUserId());    TrustedCertificateStore.setDefaultUserDirectory(configDir);

    Process.setArgV0("<pre-initialized>");

    Looper.prepareMainLooper();

    ActivityThread thread = new ActivityThread();    thread.attach(false);

    if (sMainThreadHandler == null) {        sMainThreadHandler = thread.getHandler();    }

    if (false) {        Looper.myLooper().setMessageLogging(new                LogPrinter(Log.DEBUG, "ActivityThread"));    }

    // End of event ActivityThreadMain.    Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);    Looper.loop();

    throw new RuntimeException("Main thread loop unexpectedly exited");}