ユーザーが複数の値を選択できるチェックボックス付きのカスタマイズ スピナーに baseadapter を使用しています。アプリケーションに更新ボタンがあり、チェックボックスでデータベースからの値を true に設定する必要があります。私の問題は、それを行う方法がわからないことです。たとえば、スピナーに ["A","B","C","D"] 値があり、データベースで B と D を取得しました。アクティビティを開いたときにその値を自動的に確認するにはどうすればよいですか。
カスタマイズスピナーにデータを入力するコードは次のとおりです
private void initializeCustomerSegment() {
final ArrayList<String> consumerSegments = new ArrayList<String>();
List<String> consumerSegment = databaseHandler.setItemOnConsumerSeg();
consumerSegments.addAll(consumerSegment);
checkSelectedConsumerSegment = new boolean[consumerSegments.size()];
//initialize all values of list to 'unselected' initially
for (int i = 0; i < checkSelectedConsumerSegment.length; i++) {
checkSelectedConsumerSegment[i] = false;
}
final TextView tv_ConsumerSegment = (TextView) findViewById(R.DropDownList.tv_ConsumerSegment);
tv_ConsumerSegment.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(!expandedConsumerSegment) {
// display all selected values
String selected = "";
int flag = 0;
for (int i = 0; i < consumerSegments.size(); i++) {
if (checkSelectedConsumerSegment[i] == true) {
selected += consumerSegments.get(i);
selected += ", ";
flag = 1;
}
}
if(flag == 1) {
tv_ConsumerSegment.setText(selected);
}
expandedConsumerSegment =true;
} else {
//display shortened representation of selected values
tv_ConsumerSegment.setText(BrandListAdapter.getSelected());
expandedConsumerSegment = false;
}
}
});
//onClickListener to initiate the dropDown list
TextView tv_customerSegment = (TextView)findViewById(R.DropDownList.tv_ConsumerSegment);
tv_customerSegment.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
initiatePopUpCustomerSegment(consumerSegments,tv_ConsumerSegment);
}
});
}
private void initiatePopUpCustomerSegment(ArrayList<String> customerSegments, TextView tv_CustomerSegment) {
LayoutInflater inflater = (LayoutInflater)S_10th_IReportMain.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//get the pop-up window i.e. drop-down layout
LinearLayout layoutCustomerSegment = (LinearLayout)inflater.inflate(R.layout.pop_up_window_customersegment, (ViewGroup)findViewById(R.id.PopUpView1));
//get the view to which drop-down layout is to be anchored
RelativeLayout layout4 = (RelativeLayout)findViewById(R.id.relativeLayout4);
pwConsumerSegment = new PopupWindow(layoutCustomerSegment, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
//Pop-up window background cannot be null if we want the pop-up to listen touch events outside its window
pwConsumerSegment.setBackgroundDrawable(new BitmapDrawable());
pwConsumerSegment.setTouchable(true);
//let pop-up be informed about touch events outside its window. This should be done before setting the content of pop-up
pwConsumerSegment.setOutsideTouchable(true);
pwConsumerSegment.setHeight(LayoutParams.WRAP_CONTENT);
//dismiss the pop-up i.e. drop-down when touched anywhere outside the pop-up
pwConsumerSegment.setTouchInterceptor(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
pwConsumerSegment.dismiss();
return true;
}
return false;
}
});
//provide the source layout for drop-down
pwConsumerSegment.setContentView(layoutCustomerSegment);
//anchor the drop-down to bottom-left corner of 'layout1'
pwConsumerSegment.showAsDropDown(layout4);
//populate the drop-down list
final ListView listCustomerSegment = (ListView) layoutCustomerSegment.findViewById(R.DropDownList.dropDownCustomerSegment);
ConsumerSegmentListAdapter adapter = new ConsumerSegmentListAdapter(this, customerSegments, tv_CustomerSegment);
listCustomerSegment.setAdapter(adapter);
}
これが私の ConsumerSegmentListAdapter です。リストビューは私のスピナーとして機能します。
public class ConsumerSegmentListAdapter extends BaseAdapter {
private ArrayList<String> mListCustomerSegment;
private LayoutInflater mInflater;
private TextView mSelectedItems;
private static int selectedCount = 0;
private static String firstSelected = "";
private ViewHolder holder;
private static String selected = ""; //shortened selected values representation
public static String getSelected() {
return selected;
}
public void setSelected(String selected) {
ConsumerSegmentListAdapter.selected = selected;
}
public ConsumerSegmentListAdapter(Context context, ArrayList<String> customerSegment,
TextView tv) {
mListCustomerSegment = new ArrayList<String>();
mListCustomerSegment.addAll(customerSegment);
mInflater = LayoutInflater.from(context);
mSelectedItems = tv;
}
@Override
public int getCount() {
return mListCustomerSegment.size();
}
@Override
public Object getItem(int arg0) {
return null;
}
@Override
public long getItemId(int arg0) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = mInflater.inflate(R.layout.drop_down_customersegment, null);
holder = new ViewHolder();
holder.tv = (TextView) convertView.findViewById(R.DropDownList.SelectOptionCustomerSegment);
holder.chkbox = (CheckBox) convertView.findViewById(R.DropDownList.checkboxCustomerSegment);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tv.setText(mListCustomerSegment.get(position));
final int position1 = position;
//whenever the checkbox is clicked the selected values textview is updated with new selected values
holder.chkbox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setText(position1);
}
});
if(S_10th_IReportMain.checkSelectedConsumerSegment[position])
holder.chkbox.setChecked(true);
else
holder.chkbox.setChecked(false);
return convertView;
}
/*
* Function which updates the selected values display and information(checkSelectedConsumerSegment[])
* */
private void setText(int position1){
if (!S_10th_IReportMain.checkSelectedConsumerSegment[position1]) {
S_10th_IReportMain.checkSelectedConsumerSegment[position1] = true;
selectedCount++;
} else {
S_10th_IReportMain.checkSelectedConsumerSegment[position1] = false;
selectedCount--;
}
if (selectedCount == 0) {
mSelectedItems.setText(R.string.select_consumersegment);
} else if (selectedCount == 1) {
for (int i = 0; i < S_10th_IReportMain.checkSelectedConsumerSegment.length; i++) {
if (S_10th_IReportMain.checkSelectedConsumerSegment[i] == true) {
firstSelected = mListCustomerSegment.get(i);
break;
}
}
mSelectedItems.setText(firstSelected);
setSelected(firstSelected);
} else if (selectedCount > 1) {
for (int i = 0; i < S_10th_IReportMain.checkSelectedConsumerSegment.length; i++) {
if (S_10th_IReportMain.checkSelectedConsumerSegment[i] == true) {
firstSelected = mListCustomerSegment.get(i);
break;
}
}
mSelectedItems.setText(firstSelected + " & "+ (selectedCount - 1) + " more");
setSelected(firstSelected + " & "+ (selectedCount - 1) + " more");
}
}
private class ViewHolder {
TextView tv;
CheckBox chkbox;
}
}