ListView 多重检查

Question

一直在尝试不同类型的列表视图。我现在可以在列表中显示它，实现搜索过滤器。但是，选中复选框将选中多个复选框，这不是我想要的。因此，我面临着以下问题。

1. 如何修改它，使其只检查我想要的多选行？

2. 我将把这段代码转移到一个片段中，所以每次我想更改“职员”时如何刷新“列表视图”，这将再次从数据库中检索查询并重新填充列表。我是否能够从活动中调用该方法或位于片段中的任何内容来触发刷新？

3. 检索为选中复选框的 ID 存储的 ID。

非常感谢！

活动 - 将很快将其移动到片段。

  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_encounter);
        encouterlist = new ArrayList<HashMap<String, String>>();
        myContext = this;
        encounterDB = new eAndPDbAdapter(myContext);
        encounterDB.open();
        Cursor mCursor = encounterDB.retrieveAllEncounterCursor();
        int count = mCursor.getCount();

        displaySharedPreferences();
        if ((mCursor != null) && (mCursor.getCount() > 0)) {
            mCursor.moveToFirst();

            do {
                // Get the data
                // Convert the initial to String
                if (clerkShip.equals(mCursor.getString(2)))
                {
                String eID = mCursor.getString(1);
                String encounter_name = mCursor.getString(3);
                String encounter_type = mCursor.getString(4);

            //  ename = (TextView) findViewById(R.id.eid);
            //  this.ename.setTextColor(Color.RED);
                //indicate that its successful
                Log.i("Successful retrival of", encounter_name);

                HashMap<String, String> map = new HashMap<String, String>();

                map.put(TAG_E_ID, eID);
                map.put(TAG_E_NAME, encounter_name);
                map.put(TAG_E_TYPE, encounter_type);

                // Add it to the array such that i can handle the array
                // afterwhich
                encouterlist.add(map);
            }
            }
            // move to the next row
                        while (mCursor.moveToNext());

        }

        filterText = (EditText) findViewById(R.id.encountersSearch);
        filterText.addTextChangedListener(filterTextWatcher);
        // need to link the layout
        encounterList = (ListView) findViewById(R.id.encounterslist);

        cBox = (CheckBox) findViewById(R.id.listCheck);
        encounterList.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
            ((CheckBox)parent.getChildAt(position).findViewById(R.id.listCheck)).setChecked(true);

            }
        }
        );
this.adapter = new SimpleAdapter(EncounterActivity.this,
        encouterlist, R.layout.list_v, new String[] { TAG_E_ID,
                 TAG_E_NAME, TAG_E_TYPE,
                TAG_E_REQUIRED_ATTEMPTS }, new int[] { R.id.eid,
                R.id.ename,
                R.id.etype });

this.encounterList.setAdapter(adapter);


};


private TextWatcher filterTextWatcher = new TextWatcher() {

    public void afterTextChanged(Editable s) {
    }

    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
    }

    public void onTextChanged(CharSequence s, int start, int before,
            int count) {
        ((Filterable) adapter).getFilter().filter(s);
    }

};

public void displaySharedPreferences() {
    SharedPreferences prefs = PreferenceManager
            .getDefaultSharedPreferences(EncounterActivity.this);

    String listPrefs = prefs.getString("listpref", "No Clerkship Selected");

    StringBuilder builder2 = new StringBuilder();
    builder2.append(listPrefs);

clerkShip = builder2.toString();

}

Activity_Encounter.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical">

    <EditText 
     android:id="@+id/encountersSearch"
     android:hint="Enter encounter here"
    android:layout_width="fill_parent" 
    android:windowSoftInputMode="stateHidden"
    android:imeOptions="actionSearch"
                android:singleLine="true"
    android:layout_height="wrap_content"/>

    <ListView
        android:id="@+id/encounterslist"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />


</LinearLayout>

list_v.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/eid"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:visibility="gone" />


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <CheckBox
        android:id="@+id/listCheck"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="left"
        android:clickable="false"
        android:focusable="false" >
    </CheckBox>

    <TextView
        android:id="@+id/ename"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="left" />
</LinearLayout>

<TextView
    android:id="@+id/etype"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:visibility="gone" />

<TextView
    android:id="@+id/erequiredattempts"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:visibility="gone" />

    </LinearLayout>

Answer 1

您可以将检查状态保存在数组中，并在 getview 中根据位置设置检查/未检查状态。假设有 10 个项目，有一个包含 10 个项目的 bool 数组，它存储检查状态与否。然后在 getView 中，使用位置变量检查这个数组并设置 UI 状态