Question

我试图从go * gle找到任何教程，但我还没有找到我需要的东西。

我创建了这样的布局：

|------------------|
| 1.TextView       |
| * * * * *        |
|------------------|
| 2.TextView       |
| * * * * *        |
|------------------|
| 3.TextView       |
| * * * * *        |
|------------------|
|                  |
| Btn | TextView   |

但我希望当button被按下时，它会收集每个列表中的任何项目，并将setText设置为TextView，如下所示：

|-------------------------|
| 1.TextView              |
| * * * * *               |
|-------------------------|
| 2.TextView              |
| * * *                   |
|-------------------------|
| 3.TextView              |
| * * * *                 |
|-------------------------|
|                         |
| Btn |"No : 1 - Star = 5"|
|      "No : 2 - Star = 3"|
|      "No : 3 - Star = 4"|
|-------------------------|

我只需使用以下代码setText一个列表：

kirim.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            float tanya = adapter2.getItem(3).getRatingStar(); //getItem("list id")
            TextView Star = (TextView) findViewById(R.id.star);
            if (Star != null) {
                Star.setText("Star : "+tanya);
            }
        }
    });

我尝试过循环，但我无法弄清楚我应该怎样做才能获得每个ListView列表的id和值。

我已经坚持使用此代码而尚未解决错误

kirim.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            float bintang = adapter2.getItem(3).getRatingStar();
            TextView Star = (TextView) findViewById(R.id.star);
            for(int i = 0; i<=adapter2.getCount(); i++)
                Star.setText("id 1" + i + "\nStar : "+bintang);
        }
    });

是否有任何想法或参考让我阅读代码流程？

修改

PertanyaanAdapter.java

class PertanyaanAdapter extends ArrayAdapter<Pertanyaan> {

    private AppCompatActivity activity;
    private List<Pertanyaan> movieList;

    PertanyaanAdapter(AppCompatActivity context, int resource, List<Pertanyaan> objects) {
        super(context, resource, objects);
        this.activity = context;
        this.movieList = objects;
    }

    @Override
    public Pertanyaan getItem(int position) {
        return movieList.get(position);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.item_listview, parent, false);
            holder = new ViewHolder(convertView);
            convertView.setTag(holder);

        } else {
            holder = (ViewHolder) convertView.getTag();
            //holder.ratingBar.getTag(position);
        }

        holder.ratingBar.setOnRatingBarChangeListener(onRatingChangedListener(position));

        holder.ratingBar.setTag(position);
        holder.ratingBar.setRating(getItem(position).getRatingStar());
        holder.movieName.setText(getItem(position).getAsk());

        return convertView;
    }

    private RatingBar.OnRatingBarChangeListener onRatingChangedListener(final int position) {
        return new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
                Pertanyaan item = getItem(position);
                assert item != null;
                item.setRatingStar(v);
                Log.i("Adapter", "star: " + v);
            }
        };
    }

    private static class ViewHolder {
        private RatingBar ratingBar;
        private TextView movieName;

        ViewHolder(View view) {
            ratingBar = (RatingBar) view.findViewById(R.id.rate_img);
            movieName = (TextView) view.findViewById(R.id.text);
        }
    }
}

Pertanyaan.java

package flix.yudi.pertanyaan3;
public class Pertanyaan {

    private float ratingStar;
    private String ask;

    Pertanyaan(int ratingStar, String ask) {
        this.ratingStar = ratingStar;
        this.ask = ask;
    }

    float getRatingStar() {
        return ratingStar;
    }

    void setRatingStar(float ratingStar) {
        this.ratingStar = ratingStar;
    }

    public String getAsk() {
        return ask;
    }

}

Answer 1

问题是setText发生在循环内部。因此，使用StringBuilder使用append（）和循环退出后在循环中准备文本：

    kirim.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            TextView Star = (TextView) findViewById(R.id.star);
            StringBuilder text = new StringBuilder();
            for(int i = 0; i<=adapter2.getCount(); i++) {
                float bintang = adapter2.getItem(i).getRatingStar();
                text.append("id 1" + i + "\nStar : " + bintang);
            }
            Star.setText(text);
        }
    });

现在，要将数据发送到MySQL？如果你的意思是数据库，你需要创建一个名为＆＃34; Rating＆＃34;并插入行。

Answer 2

内部onClick()

int size = adapter2.getCount();
StringBuilder builder = new StringBuilder();
for (int i = 0; i < size; i++) {
    builder.append("No : " + (i + 1) + " - " + "Star = " + adapter2.getItem(i).getRatingStar() + "\n");
}
TextView Star = (TextView) findViewById(R.id.star);
star.setText(builder.toString());

Answer 3

您需要一个linear layout垂直方向，并且可以在该线性布局中动态添加textView，并使用{{在新创建的listView上显示textView数据1}}。它会根据需要为您提供所需的输出

Android - 使用setText按钮循环listView项目TextView

3 个答案: