Question

是否有关于android的ratingbars的指导方针？我正在开发一个Android应用程序和我开发它的方式，我只能通过将其添加到对话框来设置和编辑某些内容的评级。

我想知道是否有关于评级栏的指导方针 - 是否可以将其放在对话框中？或者我应该解决这个问题？

Answer 1

RatingBar是SeekBar和ProgressBar的扩展，显示星级评分。使用默认大小RatingBar时，用户可以触摸/拖动或使用箭头键设置评级。较小的RatingBar样式（ratingBarStyleSmall）和较大的仅指示样式（ratingBarStyleIndicator）不支持用户交互，只应用作指标。

当使用支持用户交互的RatingBar时，不鼓励将小部件放在RatingBar的左侧或右侧。

当然支持可编辑的评分栏并且RatingBar的有效使用 - Google Play商店就评分内容提供了一个很好的例子。

Answer 2

我担心的是我的评级栏在适配器类中（如下所示）。我希望能够获得评级栏链接到的用户的位置。我能想到的唯一解决办法就是把它放在一个对话框中（这就是我提问的原因）。我通过使onRatingChanged中的位置成为最终的getView来解决我的问题（如何从一个内在的类中访问该位置）。阅读此处：Making paramters final关于最终属性。真的很有用。

适配器类

public class PersonAdapter extends ArrayAdapter<Person> {
private Context context;
private List<Person> people;

public PersonAdapter(Context context, List<Person> people) {
    super(context, R.layout.person_layout, people);
    this.context = context;
    this.people = people;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) 
{
    // if this is a new view, then inflate it
    View personView = convertView;

    if (personView == null) 
    {
        // get the inflater that will convert the person_layout.xml file
        // into an actual object (i.e. inflate it)
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        // create a view to display the person's info
        personView = inflater
                .inflate(R.layout.person_layout, parent, false);

        TextView txt1stTime = (TextView) personView
                .findViewById(R.id.txt1stTime);
        txt1stTime.setText("1st time");
    } 
    else 
    {
        TextView txt1stTime = (TextView) personView
                .findViewById(R.id.txt1stTime);
        txt1stTime.setText("Recycled");
    }

    // keep track of person this view is working with
    personView.setTag(people.get(position));

    // get text views that will hold strings
    TextView txtSurname = (TextView) personView
            .findViewById(R.id.txtSurname);
    TextView txtFirstname = (TextView) personView
            .findViewById(R.id.txtFirstname);
    RatingBar ratingBar = (RatingBar) personView
            .findViewById(R.id.ratingBar1);


     //Once selected, get the question which the rating is in 
    //Start asynctask and get all the details for that question to update
    //Send and update rating
    ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener()
    {
        public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser)
        {
            ratingBar.setRating(rating);
            String name = people.get(position).surname;
            Toast.makeText(getContext(),
                    "Rating set to:  " + rating + " for the position: " + position + " and user: " + name, Toast.LENGTH_SHORT).show();   

        }
    });

    // set text fields
    txtSurname.setText(people.get(position).surname);
    txtFirstname.setText(people.get(position).firstName);

    float rate = ratingBar.getRating();
    Toast.makeText(getContext(),
            "Rating is: " + rate, Toast.LENGTH_LONG).show();
    people.get(position).rating = rate;
    System.out.print(people.get(position).rating);
    // return view to ListView to display
    return personView;
}

我知道我的答案与我的实际问题没有直接关系，但是如果有人遇到过相同使用对话框的问题，那么就有一个解决方案。

什么是android关于评级栏的UI指南

2 个答案: