Question

在MainActivity ListView我有Checkboxes自定义单选Adapter每个项目都有一个复选框，它们被设置为List by Custom Adapter类。如果用户选中了一个，则弹出带有选择确认的对话框，接受后，应禁用所有复选框，但现在只禁用选定行中的一个。如何禁用所有并阻止用户更改选择的可能性？

public class CustomAdapter extends BaseAdapter implements CompoundButton.OnCheckedChangeListener { SparseBooleanArray mCheckStates; private List<CustomClass> customList; private Context context; private LayoutInflater inflater; private int selectedPosition = -1; private Dialog dialog; public CustomAdapter(Context _context, List<CustomClass> _customList) { inflater = LayoutInflater.from(_context); this.customList = _CustomList; this.context = _context; mCheckStates = new SparseBooleanArray(customList.size()); } @Override public int getCount() { return customList.size(); } @Override public Object getItem(int i) { return i; } @Override public long getItemId(int i) { return i; } @Override public View getView(int i, View view, ViewGroup viewGroup) { CustomClass customClass = customList.get(i); if (view == null) view = inflater.inflate(R.layout.custom_list, null); TextView name = (TextView) view.findViewById(R.id.tv_name); CheckBox checkBox = (CheckBox) view.findViewById(R.id.checkbox); checkBox.setTag(i); checkBox.setChecked(mCheckStates.get(i, false)); checkBox.setOnCheckedChangeListener(this); checkBox.setChecked(false); if (i == selectedPosition) { checkBox.setChecked(true); } else { checkBox.setChecked(false); } checkBox.setOnClickListener(onStateChangedListener(checkBox, i)); name.setText(customClass.getName()); return view; } private View.OnClickListener onStateChangedListener(final CheckBox checkBox, final int position) { return new View.OnClickListener() { @Override public void onClick(View v) { if (checkBox.isChecked()) { selectedPosition = position; dialog = new Dialog(context); dialog.setTitle("Accept"); dialog.setContentView(R.layout.dialog_accept); dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialogInterface) { } }); dialog.show(); Button btnAccept = (Button) dialog.findViewById(R.id.btnVote); btnAccept.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { checkBox.setEnabled(false); dialog.dismiss(); } }); } else { selectedPosition = -1; } notifyDataSetChanged(); } }; } @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { mCheckStates.put((Integer) buttonView.getTag(), isChecked); notifyDataSetChanged(); }

    public class CustomClass{

    String name;

    public CustomClass(){}

    public CustomClass(String name){
    this.name = name;
    }

    public String getName(){return name;}
    public void setName(String name){this.name = name;}

}

CustomClass：

MainActivity

ListView仅设置Adapter和{{1}}

Answer 1

包括组内的所有复选框，以便只能选中一个复选框。

Answer 2

ListView list = (ListView) findViewById("R.id.list");
for(int x = 0; x < list.getItems.length(); x++){ list.items.get(x).setEnabled(false);}

不确定，但也许是这样的。值得一试？

Answer 3

在Checkbox中更改侦听器

private int selectedPosition = 0;

   private View.OnClickListener onStateChangedListener(final CheckBox checkBox, final int position) {
            return new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (checkBox.isChecked()) {
                        customClass.setSelected(true);
                        customList.get(selectedPosition).setSelected(false);
                        selectedPosition = position;

                    }
                    notifyDataSetChanged();
                }
            };

Getview()

中的

if(customClass.getSelected()){
        checkBox.setEnable(true);
    }else{
        checkBox.setEnable(false);
    }

选中一个后，禁用ListView中的所有复选框

3 个答案: