リストビュー内のすべてのチェックボックスの選択

Question

リストビュー内のすべてのチェックボックスを選択したいが、リストビューからチェックボックスオブジェクトを取得できない。 1つのチェックボックスを選択できますが、複数のチェックボックスは選択できません。

あなたの提案は相当です。

コード：

public class MainActivity extends Activity { 
    @Override 
    public void onCreate(Bundle icicle) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.bir); 
    mainListView = (ListView) findViewById(R.id.mainListView); 
    selectall = (Button) findViewById(R.id.button1); 
    selectall.setOnClickListener(this); 
    save = (Button) findViewById(R.id.button2); 
    save.setOnClickListener(this); 

    mainListView.setOnItemClickListener(new AdapterView.OnItemClickListener() 

      { 
       @Override 
       public void onItemClick(AdapterView<?> parent, View item, 
         int position, long id) { 

       } 
      }); 
    } 
} 

クラスAmphian：

private static class Amphian 
     { 
      private String name = "" ; 
      private boolean checked = false ; 
      public Amphian(String name) 
      { 
       this.name = name ; 
      } 
      public Amphian(String name, boolean checked) 
      { 
       this.name = name ; 
       this.checked = checked ; 
      } 
      public String getName() { 
       return name; 
      } 
      public void setName(String name) { 
       this.name = name; 
      } 
      public boolean isChecked() { 
       return checked; 
      } 
      public void setChecked(boolean checked) { 
       this.checked = checked; 
      } 
      @Override 
      public String toString() { 
       return name ; 
      } 
      public void toggleChecked() 
      { 
       checked = !checked ; 
      } 
     } 

クラスAmphiansArrayAdapter：あり

public class AmphiansArrayAdapter extends ArrayAdapter<Amphian> 
     { 
      Integer name[] = 
       { 
        R.raw.ducks_landing_in_water, 
        R.raw.flicker_chicks_feeding, 
        R.raw.geese_honking_loud, 
        R.raw.geese_honking_distant, 
        R.raw.gold_finch, 
        R.raw.humming_bird_feeding, 
        R.raw.indigo_bunting, 
        R.raw.loons, 
        R.raw.little_blue_heron_fishing, 
        R.raw.pelican_chick, 
        R.raw.purple_martins, 
        R.raw.red_winged_blackbird, 
        R.raw.shorebirds_close, 
        R.raw.shorebirds_distant, 
        R.raw.shorebirds_misc, 
        R.raw.shoreseabirds, 
        R.raw.snow_geese_flock, 
        R.raw.terns, 
        R.raw.tufted_titmouse, 
        R.raw.tundra_swans, 
        R.raw.wood_stork_chicks, 
        R.raw.woodpecker_tapping 

       }; 

      private final LayoutInflater inflater; 

      public AmphiansArrayAdapter(Context context, List<Amphian> amphianList) 
      { 
       super(context, R.layout.simplerow, R.id.rowTextView, amphianList); 
       inflater = LayoutInflater.from(context) ; 
      } 

      @Override 
      public View getView(final int position, View convertView , ViewGroup parent) 
      { 
       final Amphian amphian=this.getItem(position); 

       mp=new MediaPlayer(); 
       if (convertView == null) 
       { 
         convertView = inflater.inflate(R.layout.simplerow, null); 

         // Find the child views. 

         textView = (TextView) convertView.findViewById(R.id.rowTextView); 
         checkBox = (CheckBox) convertView.findViewById(R.id.checkBox1); 

         button = (Button)convertView.findViewById(R.id.button1); 

         // Optimization: Tag the row with it's child views, so we don't have to 
         // call findViewById() later when we reuse the row. 
         convertView.setTag(new AmphianViewHolder(textView,checkBox,button)); 

         // If CheckBox is toggled, update the planet it is tagged with. 
         checkBox.setOnClickListener(new View.OnClickListener() 
         { 
          @Override 
         public void onClick(View v) 
         { 
          cb= (CheckBox) v; 
          Log.e("cb",String.valueOf(cb)); 
          Amphian amphian = (Amphian) cb.getTag(); 
          Log.e("cb",String.valueOf(cb.getTag())); 
          amphian.setChecked(cb.isChecked()); 

          Log.e("dd", "ddd"); 
          } 
         }); 

         button.setOnClickListener(new OnClickListener() 
         { 

          @Override 
          public void onClick(View v) 
          { 
           Button bu=(Button)v; 
           Amphian amphian; 
           //= (Amphian) bu.getTag(); 
           //Log.e(String.valueOf(amphian),"ddd"); 

Answer 1

読むためにあまりにも多くのコードですので、私はあなたにそれを行うにはどのようにサンプルを与える：

int count = list.getCount(); 
for (int i = 0; i < count; i++) { 
    View child = list.getItemAtPosition(i); 
    //check that child.. 
} 

または

int count = list.getChildCount(); 
for (int i = 0; i < count; i++) { 
    View child = list.getChildAt(i); 
    //check that child.. 
} 

Answer 2

selectall.setOnClickListener(new onClickListener(){ 

    @Override 
    public void onClick(View v) { 
     for (int i = 0; i < list.size(); i++) { 
      list.getItem(i).setChecked(true); 
     } 
    } 
}); 

この

Answer 3

はこれを試してみてくださいようsoethingをやってみてください。

public class MainActivity extends Activity implements OnClickListener { 
public class LVSample3Adapter extends BaseAdapter{ 
    private Context context; 
    private List<LVSample3Item> itemList; 
    public LVSample3Adapter(List<LVSample3Item> lstItems, 
      MainActivity mainActivity) { 
     // TODO Auto-generated constructor stub 
     this.context=mainActivity; 
     this.itemList=lstItems; 
    } 

    @Override 
    public int getCount() { 
     // TODO Auto-generated method stub 
     return itemList.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     // TODO Auto-generated method stub 
     return itemList.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     // TODO Auto-generated method stub 
     return 0; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 
     Log.e("lstItems1:", String.valueOf(position)); 
     LVSample3Item item = itemList.get(position); 
     convertView =LayoutInflater.from(context).inflate(R.layout.list, parent, false); 
     TextView t1=(TextView)convertView.findViewById(R.id.textView1); 
     t1.setText(item.getTitle()); 
     CheckBox chb1=(CheckBox)convertView.findViewById(R.id.checkBox1); 
     chb1.setChecked(item.getstate()); 

     return convertView; 
    } 



} 
/** Called when the activity is first created. */ 
private ListView lv; 
private ListAdapter adapter; 
private Button btn1,btn2; 
private List<LVSample3Item> lstItems; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    btn1=(Button)findViewById(R.id.button1); 
    btn2=(Button)findViewById(R.id.button2); 
    btn1.setOnClickListener(this); 
    btn2.setOnClickListener(this); 
    lstItems = new ArrayList<LVSample3Item>(); 
    LVSample3Item item = new LVSample3Item("drinks",false); 
    lstItems.add(item); 
    item = new LVSample3Item("chat",false); 
    lstItems.add(item); 
    item = new LVSample3Item("chat1",true); 
    lstItems.add(item); 
    item = new LVSample3Item("chat2",false); 
    lstItems.add(item); 
    adapter = new LVSample3Adapter(lstItems, this); 
    lv=(ListView)findViewById(R.id.listView1); 
    lv.setAdapter(adapter); 
} 
@Override 
public void onClick(View v) { 
    // TODO Auto-generated method stub 
    if(v.getId()==R.id.button1){ 
     Log.e("lstItems:", String.valueOf(lstItems.size())); 
     for(int i=0;i<lstItems.size();i++){ 
      LVSample3Item item=lstItems.get(i); 
      if(!item.getstate()){ 
       item.setpath(true); 
      } 
     } 
     ((BaseAdapter) adapter).notifyDataSetChanged(); 

    }else if(v.getId()==R.id.button2){ 
     for(int i=0;i<lstItems.size();i++){ 
      LVSample3Item item=lstItems.get(i); 
      if(item.getstate()){ 
       item.setpath(false); 
      } 
     } 
     ((BaseAdapter) adapter).notifyDataSetChanged(); 
    } 

} 

}

public class LVSample3Item implements Serializable { 



private String title; 
private boolean state; 

public LVSample3Item(String title,boolean imagepath) { 

    this.title = title; 
    this.state=imagepath; 
} 





public String getTitle() { 
    return title; 
} 
public boolean getstate() { 
    return state; 
} 

public void setTitle(String title) { 
    this.title = title; 
} 
public void setpath(boolean imagepath) { 
    this.state = imagepath; 
} 

}