安卓：我的复选框“checkAll”不更新自己的ListView的复选框项

Question

我的情况：一个按钮，复选框checkAll与形象，名字，姓氏和复选框的自定义的ListView活动

问题：当我点击checkAll时，listView不会更新listView中每个复选框的值（必须全部检查）。

在这里有我的MainActivity使用ListView：

private final static int INFO_DIALOG = 1; 
private ListView mList; 
private CheckBox checkAll; 
private Button buttonCreaPartita; 
private Person[] people; 
private int peopleSize; 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.list_layout_select_friend);  

    mList= (ListView) findViewById(R.id.list); //the listView 

    NewQAAdapterSelectFriends adapter= new NewQAAdapterSelectFriends(this); 
    //my adapter 
    MainActivity.this.people = new Person[]{ //add person to my array of Person 
      new Person(1,"Belen", "Rodriguez", R.drawable.belen,false), 
      new Person(2,"Cameron", "Diaz", R.drawable.cameron,false), 
      new Person(3,"Jessica", "Alba", R.drawable.alba,false), 
      new Person(4,"Yolanthe", "Cabau", R.drawable.cabau,false), 
      new Person(5,"Belen", "Rodriguez", R.drawable.belen,false), 
      new Person(6,"Cameron", "Diaz", R.drawable.cameron,false) 
      }; 

    peopleSize=people.length; 
    adapter.setData(people); //pass the array of person to my adapter 
    mList.setAdapter(adapter); //set the adpater 

    checkAll =(CheckBox)findViewById(R.id.checkBoxAll);//my CheckAll checkbox 
    checkAll.setChecked(false);//default value 

    checkAll.setOnClickListener(new OnClickListener() { 
     @Override 
     public void onClick(View v) { 

      if((checkAll.isChecked())){ 

       for(int i=0;i<peopleSize;i++){ 
        people[i].setCheck(true); 
            //update the new value on the array 
        ((BaseAdapter) mList.getAdapter()).notifyDataSetChanged() ; //i'll try to refresh the value of checkbox in the listview 
       } 
      } 

      else if(!(checkAll.isChecked())){ 
       for(int i=0;i<peopleSize;i++){            people[i].setCheck(false); 
               ((BaseAdapter) mList.getAdapter()).notifyDataSetChanged() ; 
         }  
      } 
     } 
    });   
} 


    buttonNext=(Button)findViewById(R.id.button); 

    buttonNext.setOnClickListener(new OnClickListener() { 
    //after user select the person on the list press buttonNext to go to next Activity 
     @Override 
     public void onClick(View arg0) { 
      Person[] selectedFriends=new Person[peopleSize]; 
      int countSelected=0; 
      for(int i=0;i<peopleSize;i++){ 
       if(people[i].isCheck()){    
        selectedFriends[countSelected]=people[i]; 
        countSelected++; 
       } 
      } 
      Toast.makeText(getApplicationContext(), "Numero elemento:"+countSelected, Toast.LENGTH_SHORT).show(); 
      Intent intentMenu=new Intent(getApplicationContext(), MenuActivity.class); 
      Toast.makeText(getApplicationContext(), "Partita Creata", Toast.LENGTH_LONG).show(); 
      startActivity(intentMenu); 
     } 
    }); 

这是我与getView功能（适配器）：

public class NewQAAdapterSelectFriends extends BaseAdapter { 
private LayoutInflater mInflater; 
private Person[] data; 
boolean[] checkBoxState; 
ViewHolder viewHolder; 

public NewQAAdapterSelectFriends(Context context) { 
    mInflater = LayoutInflater.from(context); 
} 


public void setData(Person[] data) { 
    this.data = data; 
    checkBoxState=new boolean[data.length]; 
    for(int i=0;i<data.length;i++){ 
     checkBoxState[i]=data[i].isCheck(); 
    } 
} 

@Override 
public int getCount() { 
    return data.length; 
} 

@Override 
public Object getItem(int item) { 
    return data[item]; 
} 

@Override 
public long getItemId(int position) { 
    return position; 
} 



@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    if (convertView == null) { 
     convertView = mInflater.inflate(R.layout.item_select_friends, null); 
     viewHolder=new ViewHolder(); 

     viewHolder.nameText=(TextView) convertView.findViewById(R.id.personName); 
     viewHolder.surnameText=(TextView) convertView.findViewById(R.id.personSurname); 
     viewHolder.contactImage=(ImageView) convertView.findViewById(R.id.personImage); 
     viewHolder.checkBox=(CheckBox)convertView.findViewById(R.id.checkBox); 

     convertView.setTag(viewHolder); 

    } 
    else{ 
     viewHolder = (ViewHolder) convertView.getTag(); 
    } 

    viewHolder.nameText.setText(data[position].getName()); 
    viewHolder.surnameText.setText(data[position].getSurname()); 
    viewHolder.contactImage.setImageResource(data[position].getPhotoRes()); 
    viewHolder.contactImage.setScaleType(ScaleType.FIT_XY); 
    viewHolder.checkBox.setChecked(checkBoxState[position]); 
    viewHolder.checkBox.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 
       if(((CheckBox)v).isChecked()){ 
        checkBoxState[position]=true; 
        data[position].setCheck(true); 
       }else{ 
        checkBoxState[position]=false; 
        data[position].setCheck(false); 
       } 
      } 
     }); 
    viewHolder.checkBox.setChecked(checkBoxState[position]); 
    return convertView; 
} 


static class ViewHolder { 
    TextView nameText; 
    TextView surnameText; 
    ImageView contactImage; 
    CheckBox checkBox; 
    CheckBox checkAll; 
} 
} 

随着日志我敢肯定，当我点击checkAll我的所有商品都会以true（checked）的方式更改它们的值，但是这并不显示在保持全部未选中的相对复选框中...

谢谢你的回答！

Answer 1

我会建议您通过Adapter的构造函数传递Person []这样的：

public NewQAAdapterSelectFriends(Context context, Person[] p) { 
    mInflater = LayoutInflater.from(context); 
    this.data = p; //set class level variable. 
} 

从适配器全歼boolean[] checkBoxState;，因为你必须亲自类即people.setCheck(true);状态的参考。所以不是使用checkBoxState使用data[position].getCheck()这样的：

viewHolder.checkBox.setChecked(data[position].getCheck()); //to set check box state. 

删除setData(Person[] data)法过了，希望这一切都会顺利。