Question

我想从当前读数中减少“以前的仪表读数”。但是仍然为当前读数进行账单计算。看起来很简单，但是我找不到问题所在。

Intent i = getIntent();
    final double con = i.getDoubleExtra("Value", 0.0);

    final double pre = i.getDoubleExtra("Value1", 0.0);

    cur_units.setText("" + con);
    pre_units.setText("" + pre);

       Test = con - pre;

    Units = Test;
    if (Units <= 5) {
        Amount = Units * 12;
        Ser_Charge = 50;
    } else if (Units <= 10) {
        // For the First Five Units Charge = 60 (5 * 12)
        // Next, we are removing those 5 units from total units
        Amount = 60 + ((Units - 5) * 16);
        Ser_Charge = 65;
    } else if (Units <= 15) {
        // First Five Units charge = 60, and 6 - 10 is 80 (5 * 16)
        // Next, we are removing those 10 units from total units
        Amount = 60 + 80 + ((Units - 10) * 20);
        Ser_Charge = 70;
    } else if (Units <= 20) {

Answer 1

检查您的单元/测试是否重复；如果它们是int，则将转换结果： 5.0-0.2 = 5

减号功能在我的活动中不起作用

1 个答案: