java - 我正在开发一个简单的英语学习教程应用程序，但我在设置编号位置时遇到了问题

Question

MainActivity.java:

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      Resources res= getResources();
        mainTopic=res.getStringArray(R.array.MainTopic);
        mainDescription=res.getStringArray(R.array.DescriptionContent);
        listView= (ListView) findViewById(R.id.listView);
        MyAdapter adapter=new MyAdapter(this,mainTopic,image1,mainDescription);
        listView.setAdapter(adapter);

    }
}

我的activity_main.xml 文件是:

<?xml version="1.0" encoding="utf-8"?>



    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

MyAdapter.java:

    package androidthirst.company.abhi.totalenglish;



    public MyAdapter(Context context, String[] MainTopic,String[] img,String[] description) {
        super(context,R.layout.single_row,R.id.textView,MainTopic);
        this.context=context;
        this.MainTopic=MainTopic;
        this.img=img;
        this.description=description;

    }
    @Override
    public View getView(int  position, View convertView, ViewGroup parent) {
        LayoutInflater layoutInflater= (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      View row=  layoutInflater.inflate(R.layout.single_row,parent,false);
       TextView imageView= (TextView) row.findViewById(R.id.imageView);
      TextView textView1= (TextView) row.findViewById(R.id.textView);
       TextView textView2= (TextView) row.findViewById(R.id.textView2);
        for (int i =1;i<=position;i++) {
            imageView.setText(""+i);

        }
    
         textView1.setText(MainTopic[position]);
        textView2.setText(description[position]);
        return row;
    }
}

我只想把一个放在第 1 行。

Answer 1

您的 for 循环最终是在 imageView 中设置位置值。但是position是从0开始的，所以每一个都要加1。代替你这个循环

for (int i =1;i<=position;i++) {
    imageView.setText(""+i);

}

与

imageView.setText(""+(position+1));