java - Android Studio : Create a for-loop for strings

Question

好吧，我正在处理一个表，我从共享首选项中获取所需的所有内容，将它们保存在字符串中，然后在表的单行中设置文本。它有效，但问题是:我觉得如果我只使用 foo 循环，那么用更少的代码就可以做到这一点。如果我愿意的话，这也可以添加和删除行。我唯一的问题是:我不知道如何制作这个 for 循环。我的意思是我需要滚动浏览“e1、e2、e3、d1...”等。你们有人有想法吗？

代码如下:

   e1 = (TextView) findViewById(R.id.e1);
         e2 = (TextView) findViewById(R.id.e2);
         e3 = (TextView) findViewById(R.id.e3);

         d1 = (TextView) findViewById(R.id.d1);
         d2 = (TextView) findViewById(R.id.d2);
         d3 = (TextView) findViewById(R.id.d3);

         t1 = (TextView) findViewById(R.id.t1);
         t2 = (TextView) findViewById(R.id.t2);
         t3 = (TextView) findViewById(R.id.t3);

         n1 = (TextView) findViewById(R.id.n1);
         n2 = (TextView) findViewById(R.id.n2);
         n3 = (TextView) findViewById(R.id.n3);


        //shared preferences 
        SharedPreferences mPreferences = PreferenceManager.getDefaultSharedPreferences(this);
        final SharedPreferences.Editor editor = mPreferences.edit();


        //first row
        String event1 = mPreferences.getString("event", "");
        String date1 = mPreferences.getString("date", "");
        String time1 = mPreferences.getString("time","");
        String name1 = mPreferences.getString("name","");

        //second row
        String event2 = mPreferences.getString("event1", "");
        String date2 = mPreferences.getString("date1", "");
        String time2 = mPreferences.getString("time1","");
        String name2 = mPreferences.getString("name1","");

        //third row
        String event3 = mPreferences.getString("event2", "");
        String date3 = mPreferences.getString("date2", "");
        String time3 = mPreferences.getString("time2","");
        String name3 = mPreferences.getString("name2","");


        //set text in the rows
        e1.setText(event1);
        d1.setText(date1);
        t1.setText(time1);
        n1.setText(name1);

        e2.setText(event2);
        d2.setText(date2);
        t2.setText(time2);
        n2.setText(name2);

        e3.setText(event3);
        d3.setText(date3);
        t3.setText(time3);
        n3.setText(name3);

Answer 1

嗯，在 Java 中你应该依赖运行时检查。这是很好的做法!当您想节省一些空间并动态引用变量执行以下操作时:

for (int i = 0; i < 3; i++) {
---- dynamically refer to variables here somehow --- 
}

你剥夺了自己进行运行时检查的权利。因此可能会出现错误。

您可以通过执行以下操作来节省一些空间:

e1.setText(mPreferences.getString("event", ""));
d1.setText(mPreferences.getString("date", ""));
t1.setText(mPreferences.getString("time",""));
n1.setText(mPreferences.getString("name",""));