app与server联系

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/frameworks/base/services/java/com/android/server目录下SystemServer.java

在ServerThread的run函数中增加加载RfidReaderService的代码：

        //RfidReader
        try {
          Slog.i(TAG, "RfidReader Service");
          ServiceManager.addService("rfidReader", new RfidReaderService());
        } catch (Throwable e) {
          Slog.e(TAG, "Failure starting RfidReader Service", e);
        }

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