Get Selected Item Using Checkbox in Listview

Question

I am creating an Android application where I have a ListView that displays all of the applications that were installed in my mobile phone   My ListView is customized  it is contains a Icon  TextView and CheckBox  the use of the icon is to display the icon of the application  TextView is to display the name of the application  the use of the CheckBox is to determine what item in the ListView that I selected   How can I determine what is the CheckBox that I selected in the ListView rows when I click a button in my application  I m new in Android so I don t know what is the approach that I should do   Here is my code   public class AppInfo       public Drawable icon      public String applicationName       public AppInfo            super               public AppInfo Drawable icon  String applicationName           super            this icon   icon          this applicationName   applicationName                import android content Context  import android view LayoutInflater  import android view View  import android view ViewGroup  import android widget ArrayAdapter  import android widget ImageView  import android widget TextView  import android app Activity  import android widget CheckBox   public class AppInfoAdapter extends ArrayAdapter lt AppInfo gt         Context context      int layoutResourceId      AppInfo  data     null       public AppInfoAdapter Context context  int layoutResourceId  AppInfo   data           super context  layoutResourceId data           this layoutResourceId   layoutResourceId          this context   context          this data   data              Override     public View getView int position  View convertView  ViewGroup parent            View row   convertView          AppInfoHolder holder  null           if  row    null                LayoutInflater inflater     Activity context  getLayoutInflater                row   inflater inflate layoutResourceId  parent  false                holder   new AppInfoHolder                 holder imgIcon    ImageView  row findViewById R id imgPackageIcon               holder txtTitle    TextView  row findViewById R id txtApplicationName               holder chkSelect    CheckBox  row findViewById R id chkSelect                row setTag holder                      else              holder    AppInfoHolder row getTag                        AppInfo appinfo   data position           holder txtTitle setText appinfo applicationName           holder imgIcon setImageDrawable appinfo icon           holder chkSelect setChecked true            return row                  import android widget ImageView  import android widget TextView  import android widget CheckBox   public class AppInfoHolder        ImageView imgIcon      TextView txtTitle      CheckBox chkSelect        import android app Activity  import android content pm ApplicationInfo  import android content pm PackageManager  import android os Bundle  import android widget ArrayAdapter  import android widget BaseAdapter   import android widget ListView  import android widget TextView   import java util ArrayList  import java util List  import android content pm PackageInfo   public class CacheActivity extends Activity             Override         protected void onCreate Bundle savedInstanceState               super onCreate savedInstanceState               setContentView R layout activity cache                 final ListView listApplication    ListView findViewById R id listApplication                ApplicationInfo applicationInfo   getApplicationInfo                PackageManager pm   getPackageManager                List lt PackageInfo gt  pInfo   new ArrayList lt PackageInfo gt                 pInfo addAll pm getInstalledPackages 0                AppInfo app info     new AppInfo pInfo size                  int counter   0              for PackageInfo item  pInfo                   try                       applicationInfo   pm getApplicationInfo item packageName  1                        app info counter    new AppInfo pm getApplicationIcon applicationInfo                                String valueOf pm getApplicationLabel applicationInfo                          System out println counter                                      catch Exception e                        System out println e getMessage                                        counter                               AppInfoAdapter adapter   new AppInfoAdapter this  R layout listview item row  app info               listApplication setAdapter adapter

User · Answer

The use of the checkbox is to determine what Item in the Listview that I selected    Just add the tag to checkbox using setTag   method in the Adapter class  and other side using getTag   method          Override    public void onBindViewHolder MyViewHolder holder  int position     ServiceHelper helper userServices get position   holder tvServiceName setText helper getServiceName      if  helper isServiceStatus          holder btnAdd setVisibility View VISIBLE       holder btnAdd setTag helper getServiceName         holder checkBoxServiceStatus setVisibility View INVISIBLE     else       holder checkBoxServiceStatus setVisibility View VISIBLE            This Line     holder checkBoxServiceStatus setTag helper getServiceName         holder btnAdd setVisibility View INVISIBLE             In xml  code of the checkbox just put the  android onClick  your method  attribute         lt CheckBox             android layout width  wrap content              android layout height  wrap content              android onClick  checkboxClicked                android id    id checkBox Service row              android layout marginRight  5dp              android layout alignParentTop  true              android layout alignParentRight  true              android layout alignParentEnd  true    gt   In your class Implement that method  your method         protected void checkboxClicked View view                   CheckBox checkBox  CheckBox  view            String tagName              if checkBox isChecked                tagName checkBox getTag   toString               deleteServices add tagName              checkboxArrayList add checkBox            else                  checkboxArrayList remove checkBox                  tagName checkBox getTag   toString                        if deleteServices size   gt 0 amp  amp deleteServices contains tagName     deleteServices remove tagName

User · Answer

It s a simplifications but very easy    You need to add the the focusable flag to the checkbox  as written before  You need also to add the clickable flag  as shown here   android focusable  false  android clickable  false    Than you control the checkbox state from within the ListView  ListFragment in my case  onListItemClick event   This the sample onListItemClick method   public void onListItemClick ListView l  View v  int position  long id    super onListItemClick l  v  position  id     Get related checkbox and change flag status   CheckBox cb    CheckBox v findViewById R id rowDone   cb setChecked  cb isChecked     Toast makeText getActivity     Click item   Toast LENGTH SHORT  show

User · Answer

make the checkbox non-focusable  and on list-item click do this   here codevalue is the position       Arraylist lt Integer gt  selectedschools new Arraylist lt Integer gt          lvPickSchool setOnItemClickListener new AdapterView OnItemClickListener             Override         public void onItemClick AdapterView lt   gt  parent  View view  int codevalue  long id                             CheckBox cb    CheckBox  view findViewById R id cbVisitingStatus                cb setChecked  cb isChecked                 if cb isChecked                                   if  selectedschool contains codevaule                                         selectedschool add codevaule                                               else                               if selectedschool contains codevaule                                         selectedschool remove codevaule

User · Answer

You can use model class and use setTag   getTag   methods to keep track which items from listview are checked and which not   More reference for this   listview with checkbox in android  Source code for model  public class Model        private boolean isSelected      private String animal       public String getAnimal             return animal             public void setAnimal String animal            this animal   animal             public boolean getSelected             return isSelected             public void setSelected boolean selected            isSelected   selected            put this in your custom adapter   holder checkBox setTag R integer btnplusview  convertView           holder checkBox setTag  position           holder checkBox setOnClickListener new View OnClickListener                  Override             public void onClick View v                     View tempview    View  holder checkBox getTag R integer btnplusview                   TextView tv    TextView  tempview findViewById R id animal                    Integer pos    Integer   holder checkBox getTag                    Toast makeText context   Checkbox   pos   clicked    Toast LENGTH SHORT  show                     if modelArrayList get pos  getSelected                         modelArrayList get pos  setSelected false                    else                       modelArrayList get pos  setSelected true                                                  whole code for customAdapter is  public class CustomAdapter  extends BaseAdapter        private Context context      public static ArrayList lt Model gt  modelArrayList        public CustomAdapter Context context  ArrayList lt Model gt  modelArrayList             this context   context          this modelArrayList   modelArrayList               Override     public int getViewTypeCount             return getCount               Override     public int getItemViewType int position             return position              Override     public int getCount             return modelArrayList size                Override     public Object getItem int position            return modelArrayList get position               Override     public long getItemId int position            return 0              Override     public View getView int position  View convertView  ViewGroup parent            final ViewHolder holder           if  convertView    null                holder   new ViewHolder    LayoutInflater inflater    LayoutInflater  context                      getSystemService Context LAYOUT INFLATER SERVICE               convertView   inflater inflate R layout lv item  null  true                holder checkBox    CheckBox  convertView findViewById R id cb               holder tvAnimal    TextView  convertView findViewById R id animal                convertView setTag holder            else                  the getTag returns the viewHolder object set as a tag to the view             holder    ViewHolder convertView getTag                        holder checkBox setText  Checkbox   position           holder tvAnimal setText modelArrayList get position  getAnimal              holder checkBox setChecked modelArrayList get position  getSelected              holder checkBox setTag R integer btnplusview  convertView           holder checkBox setTag  position           holder checkBox setOnClickListener new View OnClickListener                  Override             public void onClick View v                     View tempview    View  holder checkBox getTag R integer btnplusview                   TextView tv    TextView  tempview findViewById R id animal                    Integer pos    Integer   holder checkBox getTag                    Toast makeText context   Checkbox   pos   clicked    Toast LENGTH SHORT  show                     if modelArrayList get pos  getSelected                         modelArrayList get pos  setSelected false                    else                       modelArrayList get pos  setSelected true                                                         return convertView             private class ViewHolder            protected CheckBox checkBox          private TextView tvAnimal

User · Answer

Assuming you want to get items of row whose check boxes are checked at the click of a button  Assumption based on your title  Get Selected Item Using Checkbox in Listview when I click a Button    Try the below  Make only changes as below  Keep the rest the same   Explanation and discussion on the topic    https   groups google com forum  fromgroups  topic android-developers No0LrgJ6q2M  MainActivity java  public class MainActivity extends Activity        AppInfoAdapter adapter        AppInfo app info              Override         protected void onCreate Bundle savedInstanceState               super onCreate savedInstanceState               setContentView R layout activity main                 final ListView listApplication    ListView findViewById R id listApplication               Button b   Button  findViewById R id button1               b setOnClickListener new OnClickListener                                   Override                 public void onClick View v                           TODO Auto-generated method stub                      StringBuilder result   new StringBuilder                        for int i 0 i lt adapter mCheckStates size   i                                                  if adapter mCheckStates get i   true                                                                        result append app info i  applicationName                               result append   n                                                                         Toast makeText MainActivity this  result  1000  show                                                    ApplicationInfo applicationInfo   getApplicationInfo                PackageManager pm   getPackageManager                List lt PackageInfo gt  pInfo   new ArrayList lt PackageInfo gt                 pInfo addAll pm getInstalledPackages 0                app info   new AppInfo pInfo size                  int counter   0              for PackageInfo item  pInfo                   try                       applicationInfo   pm getApplicationInfo item packageName  1                        app info counter    new AppInfo pm getApplicationIcon applicationInfo                                String valueOf pm getApplicationLabel applicationInfo                          System out println counter                                      catch Exception e                        System out println e getMessage                                        counter                              adapter   new AppInfoAdapter this  R layout listview item row  app info               listApplication setAdapter adapter                  activity main xml ListView with button at the buton   lt RelativeLayout 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      tools context   MainActivity   gt        lt ListView         android layout width  fill parent          android id    id listApplication          android layout height  fill parent          android layout above    id button1          android text   string hello world    gt        lt Button         android id    id button1          android layout width  wrap content          android layout height  wrap content          android layout alignParentBottom  true          android layout centerHorizontal  true          android text  Button    gt    lt  RelativeLayout gt    AppInfoAdapter  public class AppInfoAdapter extends ArrayAdapter lt AppInfo gt  implements CompoundButton OnCheckedChangeListener    SparseBooleanArray mCheckStates        Context context      int layoutResourceId      AppInfo  data     null       public AppInfoAdapter Context context  int layoutResourceId  AppInfo   data           super context  layoutResourceId data           this layoutResourceId   layoutResourceId          this context   context          this data   data          mCheckStates   new SparseBooleanArray data length               Override     public View getView int position  View convertView  ViewGroup parent            View row   convertView          AppInfoHolder holder  null           if  row    null                LayoutInflater inflater     Activity context  getLayoutInflater                row   inflater inflate layoutResourceId  parent  false                holder   new AppInfoHolder                 holder imgIcon    ImageView  row findViewById R id imageView1               holder txtTitle    TextView  row findViewById R id textView1               holder chkSelect    CheckBox  row findViewById R id checkBox1                row setTag holder                      else              holder    AppInfoHolder row getTag                        AppInfo appinfo   data position           holder txtTitle setText appinfo applicationName           holder imgIcon setImageDrawable appinfo icon             holder chkSelect setChecked true           holder chkSelect setTag position           holder chkSelect setChecked mCheckStates get position  false            holder chkSelect setOnCheckedChangeListener this           return row             public boolean isChecked int position            return mCheckStates get position  false              public void setChecked int position  boolean isChecked            mCheckStates put position  isChecked               public void toggle int position            setChecked position   isChecked position            Override public void onCheckedChanged CompoundButton buttonView          boolean isChecked          mCheckStates put  Integer  buttonView getTag    isChecked          static class AppInfoHolder       ImageView imgIcon      TextView txtTitle      CheckBox chkSelect         Here s the snap shot

User · Answer

Full reference present at   listview with checkbox android studio Pass selected items to next activity  Main source code is as below   Create a model class first  public class Model        private boolean isSelected      private String animal       public String getAnimal             return animal             public void setAnimal String animal            this animal   animal             public boolean getSelected             return isSelected             public void setSelected boolean selected            isSelected   selected            Then in adapter class  setTags to checkbox  Use those tags in onclicklistener of checkbox   public class CustomAdapter  extends BaseAdapter        private Context context      public static ArrayList lt Model gt  modelArrayList        public CustomAdapter Context context  ArrayList lt Model gt  modelArrayList             this context   context          this modelArrayList   modelArrayList               Override     public int getViewTypeCount             return getCount               Override     public int getItemViewType int position             return position              Override     public int getCount             return modelArrayList size                Override     public Object getItem int position            return modelArrayList get position               Override     public long getItemId int position            return 0              Override     public View getView int position  View convertView  ViewGroup parent            final ViewHolder holder           if  convertView    null                holder   new ViewHolder    LayoutInflater inflater    LayoutInflater  context                      getSystemService Context LAYOUT INFLATER SERVICE               convertView   inflater inflate R layout lv item  null  true                holder checkBox    CheckBox  convertView findViewById R id cb               holder tvAnimal    TextView  convertView findViewById R id animal                convertView setTag holder            else                  the getTag returns the viewHolder object set as a tag to the view             holder    ViewHolder convertView getTag                        holder checkBox setText  Checkbox   position           holder tvAnimal setText modelArrayList get position  getAnimal              holder checkBox setChecked modelArrayList get position  getSelected              holder checkBox setTag R integer btnplusview  convertView           holder checkBox setTag  position           holder checkBox setOnClickListener new View OnClickListener                  Override             public void onClick View v                     View tempview    View  holder checkBox getTag R integer btnplusview                   TextView tv    TextView  tempview findViewById R id animal                    Integer pos    Integer   holder checkBox getTag                    Toast makeText context   Checkbox   pos   clicked    Toast LENGTH SHORT  show                     if modelArrayList get pos  getSelected                         modelArrayList get pos  setSelected false                    else                       modelArrayList get pos  setSelected true                                                         return convertView             private class ViewHolder            protected CheckBox checkBox          private TextView tvAnimal

User · Answer

Custom ListView with CheckBox   If customlayout use checkbox  you must set checkbox focusable   false   lt  xml version  1 0  encoding  utf-8   gt   lt RelativeLayout xmlns android  http   schemas android com apk res android    android orientation  vertical    android layout width  fill parent    android layout height  fill parent  gt      lt TextView android id    id rowTextView       android layout width  wrap content       android layout height  wrap content      android padding  10dp      android textSize  16sp   gt     lt  TextView gt      lt CheckBox android id    id CheckBox01       android layout width  wrap content       android layout height  wrap content       android padding  10dp      android layout alignParentRight  true       android layout marginRight  6sp      android focusable  false  gt                lt ---important    lt  CheckBox gt    lt  RelativeLayout gt    Readmore   A ListView with Checkboxes  Without Using ListActivity

User · Answer

You have to add an OnItemClickListener to the listview to determine which item was clicked  then find the checkbox   mListView setOnItemClickListener new OnItemClickListener          Override     public void onItemClick AdapterView lt   gt  parent  View v  int position  long id                CheckBox cb    CheckBox  v findViewById R id checkbox id

User · Answer

I had similar problem  Provided xml sample is put as single ListViewItem  and i couldn t click on Item itself  but checkbox was workng    lt LinearLayout xmlns android  http   schemas android com apk res android      android orientation  horizontal  android layout width  match parent      android layout height  50dp      android id    id source container       gt       lt ImageView         android layout width  40dp          android layout height  40dp          android id    id menu source icon          android background   drawable bla          android layout margin  5dp            gt       lt TextView         android layout width  wrap content          android layout height  wrap content          android id    id menu source name          android text  Test          android textScaleX  1 5          android textSize  20dp          android padding  8dp          android layout weight  1          android layout gravity  center vertical          android textColor   color source text color   gt       lt CheckBox         android layout width  40dp          android layout height  match parent          android id    id menu source check box   gt    lt  LinearLayout gt    Solution  add attribute  android focusable  false    to CheckBox control

[android] Get Selected Item Using Checkbox in Listview

Examples related to android

Examples related to listview