Android：在列表视图中归档项目

Question

我有一个列表视图，在其中显示文本项。我想显示一个复选框以及要执行的两种类型操作的文本。一种是当用户单击列表项时，它应该转到另一个活动，另一种是用户可以选择列表项的复选框并可以将项目移动到某些组。与我们在 gmail 收件箱中所做的类似。我该怎么办？有什么帮助吗？

这里我附上我的代码。 keywords.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/keywordlayout"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="@drawable/background_gradient"
 android:orientation="vertical"
 >
 <LinearLayout
    android:id="@+id/category_title_layout"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:background="#fff"
    >
    <TextView
        android:id="@+id/category_title"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text=""
        android:textColor="#000"
        android:textStyle="italic"
        android:typeface="sans"
        android:gravity="center"
        />
 </LinearLayout>
 <ListView
    android:id="@+id/keywordslist"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/background_gradient"
    >

 </ListView>
</LinearLayout>

用于显示列表项布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/list_display"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<CheckBox
    android:id="@+id/chk_box"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:visibility="invisible"
>
</CheckBox>
<TextView 
    android:id="@+id/key_id"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    >
</TextView>
<TextView 
    android:id="@+id/key_name"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp"
    android:textColor="#FFF">
</TextView>
</LinearLayout>

和我的活动的 java 代码的

package com.sample.epiphron;


public class KeywordsList extends Activity {

TextView category_title;
ListView keywords_list ;
String categoryid, categoryname;
private ArrayList<KeywordDetails> listItems = new ArrayList<KeywordDetails>(); 

@Override
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.keywords);
    Bundle extras = getIntent().getExtras();
    categoryid = extras.getString("category_id");
    categoryname = extras.getString("category_name");

    category_title = (TextView) findViewById(R.id.category_title);
    category_title.setText(""+categoryname+"- Keywords");
    keywords_list = (ListView) findViewById(R.id.keywordslist);
    drawList(LoginScreen.user_credential, categoryid);
    //Toast.makeText(this, chkbx.toString(), Toast.LENGTH_SHORT).show();
    keywords_list.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
            TextView txtv1 = (TextView) arg1.findViewById(R.id.key_id);
            Toast.makeText(KeywordsList.this, txtv1.getText(), Toast.LENGTH_LONG).show();
        }
    });

}

public void drawList(String userid, String cat_id){
    WebServiceCall res = new WebServiceCall();
    SoapObject result = res.fetchKeyword(userid, cat_id);

    ArrayList<String> al = new ArrayList<String>();
    for (int i = 0; i<result.getPropertyCount(); i++){
        SoapObject obj = (SoapObject) result.getProperty(i);
        al.add((String) obj.getProperty("keywordname"));
        KeywordDetails object = new KeywordDetails(Integer.parseInt(obj.getProperty("keywordid").toString()), obj.getProperty("keywordname").toString());
        listItems.add(object);
    }
    for ( int j = 0; j < result.getPropertyCount(); j++ ) {

    }
    keywords_list.setAdapter(new ListItemsAdapter(listItems));
}


public class KeywordDetails{
    private int keyword_id;
    private String keyword_name;

    public KeywordDetails(int key_id, String key_name){

        this.keyword_id = key_id;
        this.keyword_name = key_name;
    }
    public int getId(){
        return this.keyword_id;
    }
    public String getName(){
        return this.keyword_name;
    }

    //...
}
private class ListItemsAdapter extends ArrayAdapter<KeywordDetails> {
    ArrayList<KeywordDetails> obj = null;
    KeywordDetails keyworddtls = null;
    public ListItemsAdapter(ArrayList<KeywordDetails> items) {
        super(KeywordsList.this, android.R.layout.simple_list_item_1, items);
        this.obj = items;
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        LayoutInflater inflater = getLayoutInflater();
        convertView = inflater.inflate(R.layout.keyword_list_item, null);
        final TextView text1 = (TextView) convertView.findViewById(R.id.key_id);
        TextView text2 = (TextView) convertView.findViewById(R.id.key_name);
        CheckBox chkbx = (CheckBox) convertView.findViewById(R.id.chk_box);
        keyworddtls = obj.get(position);

        text1.setText(Integer.toString(keyworddtls.getId()));
        text2.setText(keyworddtls.getName());
        chkbx.setVisibility(View.VISIBLE);                                  
        return convertView;
    }

}

xml 文件}

Answer 1

在 所在的 xml 或用作项目布局的 xml 中添加复选框。然后在 getView() 中沿着 TextView 实例化 CheckBox。实现listview.setOnItemClickListener()并根据单击的项目（位置）启动活动[逻辑问题]对于分组的检查项目，您可以使用getCheckedItemPositions()。我希望这会给你带来灵感。