我有一个展开的 ListView ，在父节点和子项中都有复选框。 所有数据都来自网络服务，因此它是动态的。

附上图片:

现在在菜单项上单击我想获取所有复选框状态。 请指导我如何获取其中使用的复选框的 ID。

附加代码:

/**
 * 
 */


    public class Object_SecurityActivity extends ExpandableListActivity {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            // TODO Auto-generated method stub
            return super.onChildClick(parent, v, groupPosition, childPosition, id);
        }

        @Override
        public void onContentChanged() {
            // TODO Auto-generated method stub
            super.onContentChanged();
        }

        private AndroidClientEntity obj_android_client;
        private static final String LOG_TAG = "ElistCBox2";
        private String username, password, clientname;

        @Override
        public void onCreate(Bundle icicle) {
            super.onCreate(icicle);
            //setContentView(R.layout.main);
            Intent security_intent = getIntent();
            String id = security_intent.getStringExtra("id");
            obj_android_client = (AndroidClientEntity) getApplicationContext();
            username = obj_android_client.getUsername();
            password = obj_android_client.getPassword();
            clientname = obj_android_client.getClientName();
            new Securityasync().execute(username, password, clientname, id);

        }

        class Securityasync extends AsyncTask<String, String, String> {
            String sesurity_response = null;
            ProgressDialog dialog;
            private Expandable_list_Adapter expListAdapter;

            @Override
            protected String doInBackground(String... params) {
                if ((isOnline(Object_SecurityActivity.this).equals("true"))) {
                    Security_service security_obj = new Security_service();
                    try {
                        sesurity_response = security_obj.getUsersRoles(params[0],
                                params[1], params[2], params[3]);
                    } catch (IllegalStateException e) {
                        e.printStackTrace();
                    } catch (JSONException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                return null;
            }

            @Override
            protected void onPostExecute(String result) {
                if (isOnline(Object_SecurityActivity.this).equals("true")) {

                    setContentView(R.layout.layout_expandable_listview);
                    ArrayList<String> groupNames = new ArrayList<String>();
                    ArrayList<String> sub = new ArrayList<String>();
                    ArrayList<ArrayList<String>> child = new ArrayList<ArrayList<String>>();
                    ArrayList<String> sub_id = new ArrayList<String>();
                    ArrayList<String> objrid = new ArrayList<String>();
                    try {
                        JSONArray json = new JSONArray(sesurity_response);
                        // JSONArray json_child=new JSONArray(sesurity_response);
                        for (int i = 0; i < json.length(); i++) {
                            JSONObject json_obj = json.getJSONObject(i);
                            if (json_obj.getString("PRid").equalsIgnoreCase("0")) {

                                String ObjectRid = json_obj.getString("ObjectRid");
                                int m=0;
                                objrid.add(m,ObjectRid);
                                m++;
                                groupNames.add(json_obj.getString("Name"));
                                for (int j = 0; j < json.length(); j++) {

                                    JSONObject json_child = json.getJSONObject(j);
                                    if (ObjectRid.equalsIgnoreCase(json_child
                                            .getString("PRid"))) {
                                        int n=0;
                                        sub_id.add(n,json_child.getString("ObjectRid"));
                                        sub.add(json_child.getString("Name"));
                                    }

                                }
                                child.add(sub);

                            }

                        }
                        expListAdapter = new Expandable_list_Adapter(getBaseContext(),
                                groupNames, child);
                        setListAdapter(expListAdapter);
                        Log.e("size in error", "son " + json.length());
                    } catch (JSONException e) {
                        Log.e("", "", e);
                        Toast.makeText(getBaseContext(), "parsing error",
                                Toast.LENGTH_LONG).show();
                    }
                    Log.e("sizeof list", ""+sub_id.size());
                    Iterator itr=objrid.iterator();


                    while(itr.hasNext()){
                        Log.e("id","value "+itr.next());
                    }

                }
            }

            @Override
            protected void onPreExecute() {
                super.onPreExecute();

            }
        }

    }

和适配器类:

public class Expandable_list_Adapter extends BaseExpandableListAdapter implements OnCheckedChangeListener {

    private Context context;
    private ArrayList<String> groupNames;
    private ArrayList<ArrayList<String>> child;
    private LayoutInflater inflater;

    public Expandable_list_Adapter(Context context, 
                        ArrayList<String> groupNames,
                        ArrayList<ArrayList<String>> child ) { 
        this.context = context;
        this.groupNames= groupNames;
        this.child = child;
        inflater = LayoutInflater.from( context );
    }

    public Object getChild(int groupPosition, int childPosition) {
        return child.get( groupPosition ).get( childPosition );
    }

    public long getChildId(int groupPosition, int childPosition) {
        return (long)( groupPosition*1024+childPosition );  // Max 1024 children per group
    }

    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
        View v = null;
        if( convertView != null )
            v = convertView;
        else
            v = inflater.inflate(R.layout.child_row, parent, false); 
       String c = (String)getChild( groupPosition, childPosition );
        TextView color = (TextView)v.findViewById( R.id.childname );
        if( color != null )
            color.setText( c );

        CheckBox cb = (CheckBox)v.findViewById( R.id.check1 );

        //cb.setChecked(false);
        cb.setOnCheckedChangeListener(this);
        return v;
    }

    public int getChildrenCount(int groupPosition) {
        return child.get( groupPosition ).size();
    }

    public Object getGroup(int groupPosition) {
        return groupNames.get( groupPosition );        
    }

    public int getGroupCount(){
         return groupNames.size();
    }
    public long getGroupId(int groupPosition) {
        return (long)( groupPosition*1024 );  // To be consistent with getChildId
    } 

    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        View v = null;
        if( convertView != null )
            v = convertView;
        else
            v = inflater.inflate(R.layout.group_row, parent, false); 
        String gt = (String)getGroup( groupPosition );
        TextView colorGroup = (TextView)v.findViewById( R.id.childname );
        if( gt != null )
            colorGroup.setText( gt );
        CheckBox cb = (CheckBox)v.findViewById( R.id.check2 );
        cb.setChecked(false);
        return v;
    }

    public boolean hasStableIds() {
        return true;
    }

    public boolean isChildSelectable(int groupPosition, int childPosition) {
        Log.e("is group checked","group "+groupPosition);
        Log.e("selectable","has" +childPosition);
        return true;
    } 

    public void onGroupCollapsed (int groupPosition) {}
    public void onGroupExpanded(int groupPosition) {}

    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        // TODO Auto-generated method stub

    }
public void isChecked(){

}

}

child .xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
      android:background="#21415A"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <TextView android:id="@+id/childname"
         android:paddingLeft="50px"
         android:focusable="false"
         android:textSize="14px"
         android:textStyle="italic"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"/>

    <TextView android:id="@+id/rgb"
         android:focusable="false"
         android:textSize="14px"
         android:textStyle="italic"
         android:layout_width="100px"
         android:layout_height="wrap_content"/>

    <CheckBox
        android:id="@+id/check1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:focusable="false" />

</RelativeLayout>

parent.xml 与 child 相同。

请指导我如何获取复选框的 ID，因为在选中的菜单项上我必须对其进行操作基础知识。

编辑:我尝试了 setTag() 和 getTag() 。但现在可扩展 ListView 显示出奇怪的行为。当我选择一个复选框并展开另一个组时，所有 chekbok 框都设置为默认值。 在这种情况下我必须做什么。我不知道为什么它不保存状态。 我面临着与 Strange behaviour in Expandablelistview - Android 相同的问题 请指导

最佳答案

实际上，您在运行时复制的列表或网格上添加的任何控件都与您在设计时声明的控件具有相同的 id

例如:在你的例子中，这些是 childname,rgb,check1

所以如果你需要知道哪个复选框唯一 你应该使用 for 循环逐一进行

如果你想做某事，为什么不这样做

复选框点击事件

public void onClickevent(View v)
{
private CheckBox ch = (CheckBox) findViewById(v.getId());
    if (ch.IsChecked){
    //do some thing
     }
}

或者你应该和我一起去 方式添加一个独特的领域，如

 <TextView
        android:id="@+id/txtComp1_ID"
        android:layout_width="0sp"
        android:layout_height="40sp"
        android:textSize="1pt" >
    </TextView>

因为它的宽度为零，所以它不可见，但它包含该行的 id

现在为 ListView 中的所有项目运行一个for循环

找到你选中的框，然后找到它的父项，然后再找到这个id字段的子项( TextView ) 所以现在你有 id 和复选框检查状态和以前一样 这样你就可以得到这个

看例子

v = (LinearLayout) findViewById(R.id.LinearNotebookList);
            TextView _id, ID, Name;
            for (int i = 0; i < nCount; i++) {
                v = (LinearLayout) NotebookList.getAdapter().getView(i, null,
                        null);
                _id = (TextView) v.findViewById(R.id.txt_Notebook_ID);

                Available = (CheckBox) v
                        .findViewById(R.id.chkboxNotebookAvailable);
                Display = (CheckBox) v.findViewById(R.id.chkboxNotebookDisplay);
                Demo = (CheckBox) v.findViewById(R.id.chkboxNotebookDemo);
                str_id = (String) _id.getText();

                if (Available.isChecked()) {
                    strAvailable = "YES";
                } else {
                    strAvailable = "NO";
                }
                if (Display.isChecked()) {
                    strDisplay = "YES";
                } else {
                    strDisplay = "NO";
                }
                if (Demo.isChecked()) {
                    strDemo = "YES";
                    } else {
                        strDemo = "NO";
                    }
}

你可以根据自己的需要修改

关于android - 如何获取扩展 ListView 项中复选框的 ID？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10101882/