ListView中显示对象的详细信息 [英] ListView displaying object's details
问题描述
我试图在我的Android应用程序实现的是有一个的ListView 这是从对象的显示领域。可以说我有叫人与像姓名，地址，年龄等属性的对象。我想有从每个人的财产在的ListView一个项目（名称将是第一排，地址将是第二排...）。
What I am trying to achieve in my Android app is to have a ListView which is displaying fields from objects. Lets say I have an object called Person with properties like Name, Address, Age and so on. I want to have each property from Person as one item in a ListView (Name would be in first row, address would be in second row...).
我怎么能这样做，如果我不使用数组作为的ListView 的来源，而且从对象的属性？我到处都可以找到ArrayList和ArrayAdapter教程，但这个我不能使用。谢谢。
How can I do that if I am not using array as a source of ListView but properties from object? Everywhere I can find tutorials with ArrayList and ArrayAdapter but this I can't use. Thanks.
推荐答案
有关这一项，你需要创建一个适配器和一个单一的视图来加载列表，
For this one you need to create a adapter and a single view to load for list,
例如，
创建布局资源文件这样，
for example, create a layout resource file like this,
//布局/ single_rsr_list_item.xml
//layout/single_rsr_list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="100dp"
android:background="@drawable/list_item_back">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="4">
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/img_sin_list_image"
android:background="@color/black"
android:layout_marginTop="35dp"
android:layout_gravity="center_horizontal" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.2">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="SomeText SomeText SomeText SomeTextandroid:elliklm;ml;;m;psize="
android:id="@+id/tv_single_list_rsr_description"
android:textColor="@color/black"
android:textSize="15sp"
android:layout_marginTop="20dp"
android:layout_marginRight="45dp"
android:maxEms="11"
android:lines="2"
android:ellipsize="end"
android:layout_marginLeft="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="2015/03/13 1:10"
android:id="@+id/tv_sin_list_rsr_date"
android:layout_below="@+id/tv_single_list_rsr_description"
android:layout_marginTop="5dp"
android:textSize="12sp"
android:layout_marginLeft="20dp"
android:textColor="@color/ring_color" />
<TextView
android:layout_width="wrap_content"
android:visibility="gone"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Small Text"
android:id="@+id/tv_sin_list_rsr_id"
android:layout_below="@+id/tv_sin_list_rsr_date"
android:layout_alignLeft="@+id/tv_sin_list_rsr_date"
android:layout_alignStart="@+id/tv_sin_list_rsr_date" />
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
现在创建一个克拉斯得到你所需要的就是这样，
now create a claas to get what you need like this,
public class RSRData {
private int id;
private String description;
private String date;
private String imagePath;
public RSRData() {
}
public RSRData(int id, String imagePath, String description, String date) {
this.id = id;
this.imagePath = imagePath;
this.description = description;
this.date = date;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getImagePath() {
return imagePath;
}
public void setImagePath(String imagePath) {
this.imagePath = imagePath;
}
}
然后WITE这样的适配器与此逆定理到重复列表这样的，
then wite a adapter like this with converst this to a repeating list like this,
public class RSRAdapter extends ArrayAdapter<RSRData> {
Context con;
int res;
public RSRAdapter(Context context,int resource,ArrayList<RSRData> rsrData){
super(context,resource,rsrData);
this.con = context;
this.res = resource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
RSRData rsrData=getItem(position);
if(convertView==null){
LayoutInflater inflator=LayoutInflater.from(con);
convertView=inflator.inflate(res,parent,false);
}
TextView tvTitle = (TextView)convertView.findViewById(R.id.tv_single_list_rsr_description);
tvTitle.setText(rsrData.getDescription());
TextView tvId = (TextView)convertView.findViewById(R.id.tv_sin_list_rsr_id);
tvId.setText(rsrData.getId());
TextView date = (TextView)convertView.findViewById(R.id.tv_sin_list_rsr_date);
date.setText(rsrData.getDate());
/* ImageVi = (TextView)convertView.findViewById(R.id.tv_primaryKey);
tvPrimaryKey.setText(String.valueOf(promotionData.getId()));*/
return convertView;
}
}
全部完成后，使用该数据设置为您的列表视图，
after all done, use this to set data to your list view,
ListView list = (ListView)findViewById(R.id.your_list);
ArrayList<RSRAdapter> data = new ArrayList<>(); // use this to get data from database and pass to here,
RSRAdapter adapter = new RSRAdapter(this,R.layout.sigle_promotion_item,data);
list.setAdapter(adapter);
这篇关于ListView中显示对象的详细信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
