Question

尝试使用不同类型的listview。我现在能够在列表中显示它，实现搜索过滤器。但是，选中该复选框将检查多个复选框，这不是我想要的。因此，我面临着以下问题。

如何修改它以便只检查多次选择所需的行？
我会将此代码转换为片段，因此每当我想要更改'clerkship'时，如何刷新'listview'，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方法或位于片段中的任何内容来触发刷新？
检索为已选中复选框的ID存储的ID。

非常感谢！

活动 - 很快就会把它移到碎片上。

  @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中设置基于位置的已检查/未检查状态。让我们说10个项目，有一个包含10个项目的bool数组，这个商店是否存储状态。然后在getView中，使用位置变量检查此数组并设置UI状态

ListView multiCheck

1 个答案: