java - 如何在最后一个foreach项目中添加字符串？

Question

我想在 foreach 数组的最后一项中附加某个字符串。

该程序运行得非常好。给定“待处理”数组中的项目，它应该将输出值附加到待处理值的最后一项中:

String a = out + "-" + rptdate + "-";
for (String pn : pending) {
    //checks if total value + pending length value is less than 160
    if (a.length() + pn.length() < 160) { // < to leave room for the comma as well
        if (a.length() != 0) {
            if (a.length() != 14) {
                a += ",";
            }
        }

        a += pn;
    } else {
        resultingStrings.add(a);
        a = pn;
        Log.d("messages", a);
    }
}
resultingStrings.add(a);
for (String r : resultingStrings) {
    sendSMS(r);
}

Answer 1

尝试简单的代码

int size = pending.size();
int index = 0;
for (String pn : pending) {
    if(index == size - 1){
      // it is last foreach => add your last string here
    }
    index++;    
    ...
}

希望这有帮助