Question

我正在开发可解决线性程序问题的Android程序。我正在使用http://www.ssclab.org的外部库进行单纯形求解我已经尝试了网站上的示例，并且在Eclipse中运行良好。现在，我正在尝试在Android Studio Java类中实现代码。但是我不知道如何从活动中调用此类。如何将字符串“ hasil”发送到MainActivity？

public class example {
    public static void main(String[] args) throws Exception {

        ArrayList< String > constraints = new ArrayList< String >();
        constraints.add("min:  3Y +2x2 +4x3 +7x4 +8X5 ");
        constraints.add("5Y +2x2 +3X4       >= 9");
        constraints.add("3Y + X2 +X3 +5X5   >= 12");
        constraints.add("6Y+3.0x2 +4X3 +5X4 <= 124");
        constraints.add(" y + 3x2 +3X4 +6X5 <= 854");

        LP lp = new LP(constraints);
        SolutionType solution_type=lp.resolve();

        if(solution_type==SolutionType.OPTIMUM) {
            Solution soluzione=lp.getSolution();
            for(Variable var:soluzione.getVariables()) {
            SscLogger.log("Variable name :"+var.getName() + " value :"+var.getValue());
            }
            hasil = "Value:"+soluzione.getOptimumValue();
        }
    }
}

Answer 1

在活动中创建一个这样的函数，并在活动启动时或单击按钮时随时调用该函数。

private void demoFunction() throws Exception
    {
        ArrayList< String > constraints = new ArrayList< String >();
        constraints.add("min:  3Y +2x2 +4x3 +7x4 +8X5 ");
        constraints.add("5Y +2x2 +3X4       >= 9");
        constraints.add("3Y + X2 +X3 +5X5   >= 12");
        constraints.add("6Y+3.0x2 +4X3 +5X4 <= 124");
        constraints.add(" y + 3x2 +3X4 +6X5 <= 854");

        LP lp = new LP(constraints);
        SolutionType solution_type=lp.resolve();

        if(solution_type==SolutionType.OPTIMUM) {
            Solution soluzione=lp.getSolution();
            for(Variable var:soluzione.getVariables()) {
                SscLogger.log("Variable name :"+var.getName() + " value :"+var.getValue());
            }
            hasil = "Value:"+soluzione.getOptimumValue();
        }
    }

如何通过活动调用课程

1 个答案: