Java-将ArrayList对象添加到Android中的GridView

概述您好,我正在一个项目中,我必须将“Person”类型的ArrayList中的“Person”类型的每个对象插入到EclipseAndroid中的Gridview中.我的意图是显示带有该人姓名的图片(类似于Instagram).到目前为止,这是我尝试过的方法,但这似乎不起作用,但我很难理解.你们有更好的解决方案吗？Arra

您好,我正在一个项目中,我必须将“ Person”类型的ArrayList中的“ Person”类型的每个对象插入到Eclipse Android中的GrIDvIEw中.我的意图是显示带有该人姓名的图片(类似于Instagram).到目前为止,这是我尝试过的方法,但这似乎不起作用,但我很难理解.

你们有更好的解决方案吗？

ArrayList<Person> dbPersons = dop.getPersons(dop); //This is where I populate my Listint[] imageID = {            R.drawable.image1,            R.drawable.image2,            R.drawable.image3    };            grIDVIEw = (GrIDVIEw)findVIEwByID(R.ID.grID);            grIDVIEw.setAdapter(new function.CustomGrID(this, dbPersons, imageID));            grIDVIEw.setonItemClickListener(new OnItemClickListener() {                @OverrIDe                public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEw,                        int position, long ID) {                    // Todo auto-generated method stub                }            });

我的人的课程通常包含：

private String Fname;private String Lname;private String Biography;

无论如何,我不想用错误的代码轰炸这篇文章,因为我正在寻找一种更清洁,更好的选择.我只想将名称显示为grIDvIEw项的标题及其下的图片,并对arrayList中的其余对象执行相同的 *** 作.你能帮我个忙吗:)

解决方法:

您的适配器

 public class Benildus_Adapter extends ArrayAdapter<Person> {ArrayList<Person> List; // your person arrayListContext context; // the activity contextint resource; // this will be your xml filepublic Benildus_Adapter(Context context, int resource,ArrayList<Person> objects) {    super(context, resource, objects);    // Todo auto-generated constructor stub    this.List = objects;    this.context = context;    this.resource = resource;}@OverrIDepublic int getCount() {    // Todo auto-generated method stub    if(List.size() == 0){        return 0;    }else{        return List.size();    }}@OverrIDepublic VIEw getVIEw(final int position, VIEw convertVIEw, VIEwGroup parent) {    // Todo auto-generated method stub    VIEw child = convertVIEw;    RecordHolder holder;    LayoutInflater inflater = ((Activity) context).getLayoutInflater(); // inflating your xml layout    if (child == null) {                    child = inflater.inflate(resource, parent, false);        holder = new RecordHolder();        holder.fname = (TextVIEw) child.findVIEwByID(R.ID.fname); // fname is the reference to a textvIEw        holder.lname = (TextVIEw) child.findVIEwByID(R.ID.lname); // in your xml layout file         holder.bio =(TextVIEw) child.findVIEwByID(R.ID.bio); // you are inflating.etc        child.setTag(holder);    }else{        holder = (RecordHolder) child.getTag();    }    final Person user = List.get(position); // you can remove the final modifIEer.    holder.fname.setText(user.getFname());          holder.lname.setText(user.getLname());    holder.bio.setText(user.getBiography());    holder.image.setimageBitmap(user.getimage()); // if you use string then you download the image using    // the string as url and set it to your imagevIEw..    return child;}static class RecordHolder {    TextVIEw fname,lname,bio;    ImageVIEw image;    }@OverrIDepublic voID notifyDataSetChanged() { // you can remove this..    // Todo auto-generated method stub          if(getCount() == 0){        //show layout or something that notifIEs that no List is in..    }else{        // this is to make sure that you can call notifyDataSetChanged in any place and any thread        new Handler(getContext().getMainLooper()).post(new Runnable() {            @OverrIDe            public voID run() {                // Todo auto-generated method stub                Benildus_Adapter.super.notifyDataSetChanged();            }        });    }}} 

你的人班

 public class Person {private String Fname;private String Lname;private String Biography;private Bitmap image; // add the image too to your class, you can store the url of the image // or save it using bitmap.. if you store the url then = String image; the load the image// in the getvIEw method.. any way you choose..public String getFname() {    return Fname;}public voID setFname(String fname) {    Fname = fname;}public String getLname() {    return Lname;}public voID setLname(String lname) {    Lname = lname;}public String getBiography() {    return Biography;}public voID setBiography(String biography) {    Biography = biography;}public Bitmap getimage() {    return image;}public voID setimage(Bitmap image) {    this.image = image;}}

编辑我只是忘了设置适配器.

 grIDVIEw = (GrIDVIEw)findVIEwByID(R.ID.grID); Benildus_Adapter bA = new Benildus_Adapter(this, R.layout.myxml,dbPersons); grIDVIEw.setAdapter(bA);

希望对您有所帮助,让我知道

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