百富POS机A920安卓系统打印功能的推动(3)

package com.hisun.pos.utils.printer;
import android.util.Log;
import com.hisun.pos.activity.CashierChoosePaymentActivity;
import com.pax.gl.IGL;
import com.pax.ippi.dal.interfaces.IDal;
import com.pax.ippi.emv.interfaces.IEmv;
public class GetObj {
    private static IDal dal;
    private static IGL gl;
    private static IEmv emv;
    // 获取IDal dal对象
    public static IDal getDal() {
        dal = CashierChoosePaymentActivity.dal;
        if (dal == null) {
            Log.e("IPPITest", "dal is null");
        }
        return dal;
    }
    // 获取IGL gl对象
    public static IGL getGL() {
        gl = CashierChoosePaymentActivity.gl;
        if (gl == null) {
            Log.e("IPPITest", "gl is null");
        }
        return gl;
    }
    // 获取IEmv emv对象
    public static IEmv getEmv() {
        emv = CashierChoosePaymentActivity.emv;
        if (emv == null) {
            Log.e("IPPITest", "emv is null");
        }
        return emv;
    }
}

IDal dal对象可在MainActivity中注册NeptuneUser对象获得，dal = neptuneUser.getService().getDal();

    public static NeptuneUser neptuneUser;
    public static IDal dal;
    public static IGL gl;
    public static IEmv emv;
	
	@Override
    protected void setLayout() {
        setContentView(R.layout.activity_cashier_choose_payment);
        neptuneUser = NeptuneUser.getInstance(this);
        dal = neptuneUser.getService().getDal();
        gl = neptuneUser.getService().getGl();
        emv = neptuneUser.getService().getEmv();
    }
	
    @Override
    protected void onResume() {
        super.onResume();
        neptuneUser.register();
    }
    @Override
    protected void onPause() {
        super.onPause();
        neptuneUser.unRegister();
    }

补充：获取pos机设备信息的API百富a920使用说明，源自demo

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