android jni 学习之一 <资料转载>

public class DataProvider {

    private static final class DataProviderHolder {

        private static final DataProvider instance = new DataProvider();

    }

    private DataProvider() {
    }

    public static DataProvider getInstance() {

        return DataProviderHolder.instance;

    }

/*本地方法实例一*/
    public synchronized native int Operator(String deviceMac, int deviceType,
            int state);

/*本地方法实例二*/
    public synchronized native int OperatorCmd(String deviceMac,
            int deviceType, int cmd, int state);

/*本地方法实例三*/
    public synchronized native String OperatorCmdString(String deviceMac,
            int deviceType, int cmd, int state);

/*本地方法实例四*/
    public native int OpenTty(String serialPort);

/*开始呼唤上面列出来的本地实例*/
    public synchronized native String WriteDevice(String value,int type,int cmd,int val);

    static {
        System.loadLibrary("zigbee_r_lock");
    }

}