Android - 收集字符串数组项

Question

我想收集String []数字项目。一个例子：这是我的代码：

public class test extends Activity {
    String[] numbers = {
            "4",
            "7",
            "24",
            "77",
            "98"
    };
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        String str = "collect String[] numbers items";
        TextView textView = (TextView)findViewById(R.id.textView);
        textView.setText(str);

    }
}

Answer 1

你可以这样试试，

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        int total = 0;
        for (int i = 0; i < numbers.length; i++) {
           if(TextUtils.isDigitsOnly(numbers[i])) {
              total += Integer.parseInt(numbers[i]);
           }
        }
        //String str = "collect String[] numbers items";
        TextView textView = (TextView)findViewById(R.id.textView);
        textView.setText(String.valueOf(total);

    }