使用ListView和自定义Adapter完成列表信息显示

完成此项任务我们应该想象到在布局方面应该有三块需要做到：从大到小说起，1、显示此列表的主界面2、在主界面一行一行显示3、在一行上显示的格式

下面根据上面的想法完成以上三种页面布局

1、显示此列表主界面

效果可以为：

2、在主界面上一行一行的显示

效果可以为：

3、在一行上显示的格式

效果为：

java代码要有主Java程序和Fragment来加载数据

首先创一个AdapterFragment用来加载数据

public class AdapterFragment extends Fragment {    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {        View view =inflater.inflate(R.layout.fragment_adapter,container,false);        List
    
      datas = new ArrayList<>();        datas.add(new NameMessage(R.mipmap.ic_launcher,"蔡志坤","25","aa@11.cn","厦门市"));        datas.add(new NameMessage(R.mipmap.ic_launcher,"李杰华","25","bb@22.cn","漳州市"));       datas.add(new NameMessage(R.mipmap.ic_launcher,"张亮","25","cc@33.cn","厦门市"));        datas.add(new NameMessage(R.mipmap.ic_launcher,"陈旭","25","dd@44.cn","厦门市"));        datas.add(new NameMessage(R.mipmap.ic_launcher,"刘玄德","25","ee@55.cn","福州市"));        MessageAsapter adapter = new MessageAsapter(getActivity(), datas);        //将数据加载到listView        ListView listView = (ListView) view.findViewById(R.id.list_view);        listView.setAdapter(adapter);        return view;    }}
    

为以上数据创建一个对象组

public class NameMessage {    private String name;    private String age;    private String email;    private String dizhi;    private int imgId;    public NameMessage( int imgId,String name, String age, String email, String dizhi) {        this.name = name;        this.age = age;        this.email = email;        this.dizhi = dizhi;        this.imgId = imgId;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getAge() {        return age;    }    public void setAge(String age) {        this.age = age;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }    public String getDizhi() {        return dizhi;    }    public void setDizhi(String dizhi) {        this.dizhi = dizhi;    }    public int getImgId() {        return imgId;    }    public void setImgId(int imgId) {        this.imgId = imgId;    }}

获取数据中的每个控件对象以及为每个控件赋值

```public class MessageAsapter extends BaseAdapter {

private List datas;

private Context context;

public MessageAsapter(Context context,List datas) {

this.datas = datas;

this.context = context;

}

@Override

public int getCount() {

return datas.size();

}

@Overridepublic Object getItem(int i) {    return datas.get(i);}@Overridepublic long getItemId(int i) {    return i;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {    if(view == null){        view = LayoutInflater.from(context).inflate(R.layout.item,null);    }    //2、获取View中的每个控件的对象    ImageView img = (ImageView)view.findViewById(R.id.img);    TextView name =(TextView) view.findViewById(R.id.name);    TextView age = (TextView)view.findViewById(R.id.age);    TextView email = (TextView)view.findViewById(R.id.email);    TextView dizhi = (TextView)view.findViewById(R.id.dizhi);    //3、给View中的每个控件赋值    NameMessage namemessage = datas.get(i);    img.setImageResource(namemessage.getImgId());    name.setText(namemessage.getName());    age.setText(namemessage.getAge());    email.setText(namemessage.getEmail());    dizhi.setText(namemessage.getDizhi());    return view;}

}

***主界面的Java程序显示***

public class ListViewActivity extends AppCompatActivity {private Fragment adapterFragment;private FragmentTransaction transction;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_list_view);    FragmentManager manager = getFragmentManager() ;    transction = manager.beginTransaction();    if(adapterFragment ==null){        adapterFragment = new AdapterFragment();        transction.add(R.id.show,adapterFragment);    }    transction.replace(R.id.show,adapterFragment);    transction.commit();}

```

最后的成品为：

在做这个的时候应该弄清楚逻辑，每个界面之间的关系，以及比例的分配，接着就是在Java代码中实现他需要做的，大概就可以解决了