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");
}