Question

我使用this question的答案将TextView点击的基本值放到单个TextView中。这个代码给出了每次点击的值，我想知道如何添加TextView的现有值。注意：m1aa和m1ab是前一个活动中的数字变量，并通过意图接收到此活动。

UPDATE 这个问题应该是“你如何将字符串转换为小数。”

    //Original non working code.
    private int productTotal1;
    private int productTotal2;
    private int overallTotalproduct;


    private TextView m1a, 
    private TextView m1aa, 

    //and then way down the page

    productTotal1 = 0;
    productTotal2 = 0;
    overallTotalproduct = 0;

    final TextView textViewtotalproduct = (TextView) findViewById(R.id.total);
    final TextView textView1 = (TextView) findViewById(R.id.m1aa);
    final TextView textView2 = (TextView) findViewById(R.id.m1ab);

    textView1.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            productTotal1++;
            overallTotalproduct = productTotal1 + productTotal2;
            textView1.setText(String.valueOf(productTotal1));
            textViewtotalproduct.setText(String.valueOf(overallTotalproduct));
        }
    });

    textView2.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            productTotal2++;
            overallTotalproduct = productTotal1 + productTotal2;
            textView2.setText(String.valueOf(productTotal2));
            textViewtotalproduct.setText(String.valueOf(overallTotalproduct));
        }
    });

***更新***工作精细:) 在获得帮助和“思考”关于我写作的内容之后我最终还是......

//Working version
private double overallTotalproduct;



    final TextView textViewtotalproduct = (TextView) findViewById(R.id.total);

    final TextView textView1 = (TextView) findViewById(R.id.m1aa);
    final String stringm1aa = textView1.getText().toString();
    final double intm1aa = Double.parseDouble(stringm1aa);


    final TextView textView2 = (TextView) findViewById(R.id.m1ab);
    final String stringm1ab = textView2.getText().toString();
    final double intm1ab = Double.parseDouble(stringm1ab);

Answer 1

您可以使用以下代码获取TextView的值并将其转换为整数

String s = textView.getText().toString();
int n = Integer.parseInt(s);

如果字符串不包含可解析的整数，则会抛出NumberFormatException。

单个textview中多个textview的总价值？

1 个答案: