目前，我已经实现了一个多层固定列表视图，通过它可以将一个包含listview的linearlayout子类化。它只是一个带有listview的标题，用于保持标题位于顶部。我已经实现了三个不同的适配器来使用它。 BuildingListAdapter，FloorListAdapter和RoomListAdapter。
他们各自坐在一起，我认为我过于复杂，现在它有点工作，有点不然。简单的想法，真的。想出一个属于项目的建筑物。如果您选择建筑物，它会过滤地板并显示该建筑物中的地板，如果您选择地板，则会显示地板的房间。 Buuut！有时候它非常奇怪而且挑剔。我遇到的主要问题是它滚动时。如果我点击建筑物，它会突出显示绿色以显示已被选中，当我再次向下滚动列表时，它不再是绿色。我只是想知道是否有人有一个干净，类似的例子，因为我觉得要废弃我的所有代码，因为它看起来很糟糕，很难维护。
public class BuildingListAdapter extends BaseAdapter implements ListAdapter {
private Activity context;
private ArrayList<Building> buildingCollection;
public FloorListAdapter floorAdapter;
private DataSource datasource;
/**
* @param context
* @param buildingCollection
*/
public BuildingListAdapter(Activity context,
ArrayList<Building> buildingCollection) {
this.context = context;
this.buildingCollection = buildingCollection;
}
/**
* @param context
* @param floorAdapter
* @param buildingList
*/
public BuildingListAdapter(Activity context, FloorListAdapter floorAdapter,
ArrayList<Building> buildingList) {
this.context = context;
this.datasource = new DataSource(context);
datasource.open();
this.floorAdapter = floorAdapter;
this.buildingCollection = buildingList;
}
/**
* @return
*/
public FloorListAdapter getFloorCollection() {
return floorAdapter;
}
/**
* @param floorCollection
*/
public void setFloorCollection(FloorListAdapter floorCollection) {
this.floorAdapter = floorCollection;
}
/* (non-Javadoc)
* @see android.widget.Adapter#getCount()
*/
public int getCount() {
return buildingCollection.size();
}
/* (non-Javadoc)
* @see android.widget.Adapter#getItem(int)
*/
public Object getItem(int position) {
return buildingCollection.get(position);
}
/* (non-Javadoc)
* @see android.widget.Adapter#getItemId(int)
*/
public long getItemId(int position) {
return position;
}
/* (non-Javadoc)
* @see android.widget.BaseAdapter#getItemViewType(int)
*/
public int getItemViewType(int position) {
return IGNORE_ITEM_VIEW_TYPE;
}
/**
*
*/
public void update()
{
buildingCollection = datasource.getBuildings();
}
/* (non-Javadoc)
* @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
*/
public View getView(final int position, View convertView,
final ViewGroup parent) {
final Building selectedBuilding = buildingCollection.get(position);
final String buildingDescription = "Building "
+ selectedBuilding.getId();
LayoutInflater inflater = context.getLayoutInflater();
if (convertView == null) {
convertView = inflater.inflate(R.layout.location_child_item, null);
}
TextView buildingDescriptionView = (TextView) convertView
.findViewById(R.id.locationDescription);
buildingDescriptionView.setText(buildingDescription);
convertView.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (!selectedBuilding.selected)
{
for (Building building : buildingCollection)
{
if (building.getId() != selectedBuilding.getId())
{
building.setSelected(false);
datasource.setColumnTrue(SQLiteHelper.TABLE_BUILDING,
false, building.getId(),
SQLiteHelper.COLUMN_BUILDING_ID);
}
}
for (int i = 0; i < parent.getChildCount(); i++)
{
parent.getChildAt(i).setBackgroundResource(
R.color.white);
}
selectedBuilding.setSelected(true);
datasource.setColumnTrue(SQLiteHelper.TABLE_BUILDING, true,
selectedBuilding.getId(),
SQLiteHelper.COLUMN_BUILDING_ID);
v.setBackgroundResource(R.color.green);
}
else
{
selectedBuilding.setSelected(false);
datasource.setColumnTrue(SQLiteHelper.TABLE_BUILDING, false,
selectedBuilding.getId(),
SQLiteHelper.COLUMN_BUILDING_ID);
v.setBackgroundResource(R.color.white);
}
if (floorAdapter != null) {
floorAdapter.filter();
floorAdapter.notifyDataSetChanged();
floorAdapter.notifyDataSetInvalidated();
}
}
});
return convertView;
}
/* (non-Javadoc)
* @see android.widget.BaseAdapter#getViewTypeCount()
*/
public int getViewTypeCount() {
return 1;
}
/* (non-Javadoc)
* @see android.widget.BaseAdapter#isEnabled(int)
*/
public boolean isEnabled(int position) {
return false;
}
}
这是我的一个适配器，应该足以告诉你它的状态。
这是我的LocationView，每个人都有一个按钮，每个人都有一个添加按钮，在这里你可以添加一个新的建筑物，地板或房间，它只是添加了它可以成为的一部分的下拉列表。
public class LocationView extends LinearLayout {
List<String> groupList;
ArrayList<Building> buildingList;
ArrayList<Floor> floorList;
ArrayList<Location> roomList;
String projectNo;
DataSource datasource;
public LocationView(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.location_view, this);
datasource = new DataSource(context);
datasource.open();
}
/**
* Populates the list view with an overview of the Post Survey Records
* Currently in the Database
*/
/**
* @param context
* @param activity
* @param projectNo
*/
public void updateListView(Context context, Activity activity,
String projectNo) {
loadBuildingChild();
loadFloorChild();
loadRoomChild();
final LocationListAdapter locationListAdapter = new LocationListAdapter(activity,
floorList);
final FloorListAdapter floorListAdapter = new FloorListAdapter(
activity, buildingList, locationListAdapter);
PinnedListView buildingView = (PinnedListView) findViewById(R.id.buildng);
buildingView.setHeader("Buildings");
ListView buildingListView = (ListView) buildingView
.findViewById(R.id.list);
buildingListView.setAdapter(new BuildingListAdapter(activity,
floorListAdapter, buildingList));
PinnedListView floorView = (PinnedListView) findViewById(R.id.floor);
floorView.setHeader("Floors");
final ListView floorListView = (ListView) floorView
.findViewById(R.id.list);
floorListView.setAdapter(floorListAdapter);
PinnedListView roomView = (PinnedListView) findViewById(R.id.room);
roomView.setHeader("Rooms");
ListView roomListView = (ListView) roomView.findViewById(R.id.list);
roomListView.setAdapter(locationListAdapter);
setAddBuilding(buildingView);
setAddFloor(floorView, buildingList, floorListAdapter);
setAddRoom(roomView, floorList, locationListAdapter);
}
/**
* @param buildingView
*/
private void setAddBuilding(PinnedListView buildingView) {
ImageView add = (ImageView) buildingView.findViewById(R.id.imagebutton1);
add.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final BuildingDialog buildingDialog = new BuildingDialog(
getContext());
buildingDialog.show();
Button cancelButton = (Button) buildingDialog
.findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
buildingDialog.dismiss();
}
});
Button addButton = (Button) buildingDialog
.findViewById(R.id.addButton);
addButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
EditText buildingEdit = (EditText) buildingDialog
.findViewById(R.id.buildingEdit);
ContentValues contentValues = new ContentValues();
contentValues.put(SQLiteHelper.COLUMN_BUILDING_NAME,
buildingEdit.getText().toString());
contentValues.put(SQLiteHelper.COLUMN_SITE_ID, 1);
datasource.commitRecord(SQLiteHelper.TABLE_BUILDING,
contentValues);
buildingDialog.dismiss();
loadBuildingChild();
}
});
}
});
}
/**
* @param buildings
*/
private void loadBuildingChild() {
buildingList = datasource.getBuildings();
}
/**
*
*/
private void loadFloorChild() {
floorList = new ArrayList<Floor>();
floorList = datasource.getFloors();
}
/**
*
*/
private void loadRoomChild() {
roomList = new ArrayList<Location>();
roomList = datasource.getLocations();
}
/**
* @param floorView
* @param buildingCollection
* @param adapter
*/
private void setAddFloor(PinnedListView floorView, final ArrayList<Building> buildingCollection, final FloorListAdapter adapter ) {
ImageView add = (ImageView) floorView.findViewById(R.id.imagebutton1);
add.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final FloorDialog floorDialog = new FloorDialog(getContext());
floorDialog.show();
final Spinner buildingSpinner = (Spinner) floorDialog
.findViewById(R.id.buildingSpinner);
ArrayList<String> buildingTexts = new ArrayList<String>();
for (Building building : buildingCollection) {
buildingTexts.add(building.buildingDescription);
}
ArrayAdapter buildingAdapter = new ArrayAdapter(v.getContext(),
android.R.layout.simple_spinner_item, buildingTexts);
buildingAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
buildingSpinner.setAdapter(buildingAdapter);
Button cancelButton = (Button) floorDialog
.findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
floorDialog.dismiss();
}
});
Button addButton = (Button) floorDialog
.findViewById(R.id.addButton);
addButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
EditText floorNameEdit = (EditText) floorDialog
.findViewById(R.id.floorNameEdit);
ContentValues contentValues = new ContentValues();
int buildingId = buildingCollection.get(
buildingSpinner.getSelectedItemPosition())
.getId();
contentValues.put(SQLiteHelper.COLUMN_FLOOR_NUMBER,
datasource.getMaxFloorNo(buildingId) + 1);
contentValues.put(SQLiteHelper.COLUMN_BUILDING_ID,
buildingId);
contentValues.put(SQLiteHelper.COLUMN_FLOOR_NAME,
"Building " + buildingId
+ floorNameEdit.getText().toString());
datasource.commitRecord(SQLiteHelper.TABLE_FLOOR,
contentValues);
adapter.filter();
floorDialog.dismiss();
}
});
}
});
}
/**
* @param roomView
* @param floorCollection
* @param adapter
*/
private void setAddRoom(final PinnedListView roomView, final ArrayList<Floor> floorCollection, final LocationListAdapter adapter ) {
ImageView addRoom = (ImageView) roomView.findViewById(R.id.imagebutton1);
addRoom.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final LocationDialog roomDialog = new LocationDialog(getContext());
final Spinner floorSpinner = (Spinner) roomDialog
.findViewById(R.id.floorSpinner);
ArrayList<String> floorTexts = new ArrayList<String>();
for (Floor floor : floorCollection) {
floorTexts.add(floor.getFloorName());
}
ArrayAdapter buildingAdapter = new ArrayAdapter(
roomView.getContext(), android.R.layout.simple_spinner_item,
floorTexts);
buildingAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
floorSpinner.setAdapter(buildingAdapter);
for (Floor floor : floorCollection) {
if (floor.isSelected()) {
floorSpinner.setSelection(floorCollection.indexOf(floor));
}
}
roomDialog.show();
Button cancelButton = (Button) roomDialog
.findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
roomDialog.dismiss();
}
});
Button addButton = (Button) roomDialog
.findViewById(R.id.addButton);
addButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
EditText roomNameEdit = (EditText) roomDialog
.findViewById(R.id.roomNameEdit);
ContentValues contentValues = new ContentValues();
Floor floor = floorCollection.get(floorSpinner
.getSelectedItemPosition());
contentValues
.put(SQLiteHelper.COLUMN_LOCATION_NUMBER,
datasource.getMaxFloorNo(floor
.getFloorId()) + 1);
contentValues.put(SQLiteHelper.COLUMN_FLOOR_ID,
floor.getFloorId());
contentValues.put(
SQLiteHelper.COLUMN_LOCATION_DESCRIPTION,
"Building " + floor.getBuildingID()
+ floor.getFloorName() + " "
+ roomNameEdit.getText().toString());
datasource.commitRecord(SQLiteHelper.TABLE_LOCATION,
contentValues);
// roomCollection.add(datasource.getLatestLocation(floor.getFloorId()));
adapter.filter();
roomDialog.dismiss();
}
});
}
});
}
}
如果您想了解有关代码或我的意图的更多信息，请直接询问。 任何，所有的批评都是受欢迎的，我真的很想清理一下。
我必须对另一部分使用类似的方法，但它会更复杂，所以我不想继续前进，除非我能在这部分做得好。
非常感谢！
编辑：我想要的主要内容是基于父结果进行过滤的好方法。布局虽然有缺陷，但在我的实现中唯一不能很好用的东西并不重要。
编辑2：根据请求，r.layout.location_view.xml，虽然它并不多。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="500dp"
android:orientation="vertical"
android:id="@+id/locationView"
>
<com.ohs.mobile.app.PinnedListView
android:layout_height="0dp"
android:layout_width="fill_parent"
android:id="@+id/buildng"
android:layout_weight="1"
/>
<com.ohs.mobile.app.PinnedListView
android:layout_height="0dp"
android:layout_width="fill_parent"
android:id="@+id/floor"
android:layout_weight="1"
android:clickable="true"
/>
<com.ohs.mobile.app.PinnedListView
android:layout_height="0dp"
android:layout_width="fill_parent"
android:id="@+id/room"
android:layout_weight="2"
/>
</LinearLayout>