Merge "Fix crash when Looper used after quit."

    }

    Message next() {

        // Return here if the message loop has already quit and been disposed.

        // This can happen if the application tries to restart a looper after quit

        // which is not supported.

        final int ptr = mPtr;

        if (ptr == 0) {

            return null;

        }

        int pendingIdleHandlerCount = -1; // -1 only during first iteration

        int nextPollTimeoutMillis = 0;

        for (;;) {

                Binder.flushPendingCommands();

            }

            // We can assume mPtr != 0 because the loop is obviously still running.

            // The looper will not call this method after the loop quits.

            nativePollOnce(mPtr, nextPollTimeoutMillis);

            nativePollOnce(ptr, nextPollTimeoutMillis);

            synchronized (this) {

                // Try to retrieve the next message.  Return if found.