列表视图分隔符和不可单击的项目

Question

All，

我想在列表中显示一个分隔线，并希望使该项目不可单击但不显示为灰色。我尝试将我的 xml 布局设置为不可单击并且在我膨胀时未启用，但它不起作用。下面是我的代码。

private static final String[] items = { "lorem", "ipsum", "dolor", "sit",
    "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel",
    "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel",
    "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque",
    "augue", "purus","Afghanistan", "Albania",
    "Algeria", "American Samoa", "Andorra", "Angola", "Anguilla",
    "Antarctica", "Antigua and Barbuda", "Argentina", "Armenia",
    "Aruba", "Australia", "Austria", "Azerbaijan", "Bahrain",
    "Bangladesh", "Barbados", "Belarus", "Belgium", "Belize", "Benin",
    "Bermuda", "Bhutan", "Bolivia", "Bosnia and Herzegovina",
    "Botswana", "Bouvet Island", "Brazil",
    "British Indian Ocean Territory", "British Virgin Islands",
    "Brunei", "Bulgaria", "Burkina Faso", "Burundi", "Cote d'Ivoire",
    "Cambodia", "Cameroon", "Canada", "Cape Verde", "Cayman Islands",
    "Central African Republic", "Chad", "Chile", "China",
    "Christmas Island", "Cocos (Keeling) Islands", "Colombia",
    "Comoros", "Congo", "Cook Islands", "Costa Rica", "Croatia",
    "Cuba", "Cyprus", "Czech Republic",
    "Democratic Republic of the Congo", "Denmark", "Djibouti",
    "Dominica", "Dominican Republic", "East Timor", "Ecuador", "Egypt",
    "El Salvador", "Equatorial Guinea", "Eritrea", "Estonia",
    "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji",
    "Finland", "Former Yugoslav Republic of Macedonia", "France",
    "French Guiana", "French Polynesia", "French Southern Territories",
    "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar", "Greece",
    "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala",
    "Guinea", "Guinea-Bissau", "Guyana", "Haiti",
    "Heard Island and McDonald Islands", "Honduras", "Hong Kong",
    "Hungary", "Iceland", "India", "Indonesia", "Iran", "Iraq",
    "Ireland", "Israel", "Italy", "Jamaica", "Japan", "Jordan",
    "Kazakhstan", "Kenya", "Kiribati", "Kuwait", "Kyrgyzstan", "Laos",
    "Latvia", "Lebanon", "Lesotho", "Liberia", "Libya",
    "Liechtenstein", "Lithuania", "Luxembourg", "Macau", "Madagascar",
    "Malawi", "Malaysia", "Maldives", "Mali", "Malta",
    "Marshall Islands", "Martinique", "Mauritania", "Mauritius",
    "Mayotte", "Mexico", "Micronesia", "Moldova", "Monaco", "Mongolia",
    "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia",
    "Nauru", "Nepal", "Netherlands", "Netherlands Antilles",
    "New Caledonia", "New Zealand", "Nicaragua", "Niger", "Nigeria",
    "Niue", "Norfolk Island", "North Korea", "Northern Marianas",
    "Norway", "Oman", "Pakistan", "Palau", "Panama",
    "Papua New Guinea", "Paraguay", "Peru", "Philippines",
    "Pitcairn Islands", "Poland", "Portugal", "Puerto Rico", "Qatar",
    "Reunion", "Romania", "Russia", "Rwanda", "Sqo Tome and Principe",
    "Saint Helena", "Saint Kitts and Nevis", "Saint Lucia",
    "Saint Pierre and Miquelon", "Saint Vincent and the Grenadines",
    "Samoa", "San Marino", "Saudi Arabia", "Senegal", "Seychelles",
    "Sierra Leone", "Singapore", "Slovakia", "Slovenia",
    "Solomon Islands", "Somalia", "South Africa",
    "South Georgia and the South Sandwich Islands", "South Korea",
    "Spain", "Sri Lanka", "Sudan", "Suriname",
    "Svalbard and Jan Mayen", "Swaziland", "Sweden", "Switzerland",
    "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand",
    "The Bahamas", "The Gambia", "Togo", "Tokelau", "Tonga",
    "Trinidad and Tobago", "Tunisia", "Turkey", "Turkmenistan",
    "Turks and Caicos Islands", "Tuvalu", "Virgin Islands", "Uganda",
    "Ukraine", "United Arab Emirates", "United Kingdom",
    "United States", "United States Minor Outlying Islands", "Uruguay",
    "Uzbekistan", "Vanuatu", "Vatican City", "Venezuela", "Vietnam",
    "Wallis and Futuna", "Western Sahara", "Yemen", "Yugoslavia",
    "Zambia", "Zimbabwe" };
    TextView selection;
    ListView list;
    MyCustomAdapter mAdapter;


/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    selection = (TextView) findViewById(R.id.textView1);
    list = (ListView) findViewById(R.id.listView1);
    mAdapter = new MyCustomAdapter();

    for (int i = 0; i < items.length; i++) {
        mAdapter.addItem(items[i]);
        if ((i+1) % 4 == 0) {
            mAdapter.addSeparatorItem("separator " + (i+1));
        }
    }

    list.setAdapter(mAdapter);
    list.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            int type;
            type = mAdapter.getItemViewType(arg2);
            if (type == 0){
                selection.setText("item");
            }
            if (type == 1){
                selection.setText("divider");
            }

        }
    });
}
class MyCustomAdapter extends BaseAdapter{
    private static final int TYPE_ITEM =0;
    private static final int TYPE_SEPARATOR = 1;
    private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1;
    private ArrayList<String> mData = new ArrayList<String>();
    private LayoutInflater mInflater;
    private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>();
    public MyCustomAdapter() {
        mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }
    public void addItem(final String item) {
        mData.add(item);
        notifyDataSetChanged();
    }
    public void addSeparatorItem(final String item) {
        mData.add(item);
        // save separator position
        mSeparatorsSet.add(mData.size() - 1);
        notifyDataSetChanged();
    }

    @Override
    public int getItemViewType(int position) {
        return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
    }
    @Override
    public int getViewTypeCount() {
        return TYPE_MAX_COUNT;
    }
    @Override
    public int getCount() {
        return mData.size();
    }
    @Override
    public String getItem(int position) {
        return mData.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        int type = getItemViewType(position);
        System.out.println("getView " + position + " " + convertView + " type = " + type);
        if (convertView == null){
            holder = new ViewHolder();
            switch (type) {
            case TYPE_ITEM:
                convertView = mInflater.inflate(R.layout.row, null);
                holder.textView = (TextView) convertView.findViewById(R.id.label);
                break;
            case TYPE_SEPARATOR:
             convertView = mInflater.inflate(R.layout.item2, null);
             holder.textView = (TextView)convertView.findViewById(R.id.textSeparator);
             holder.layout = (LinearLayout) convertView.findViewById(R.id.layout);
             holder.layout.setEnabled(false);
             holder.textView.setEnabled(false);

             break;

            }
            convertView.setTag(holder);
        }else{
            holder = (ViewHolder) convertView.getTag();
        }
        holder.textView.setText(mData.get(position));
        return convertView;

    }
}
public static class ViewHolder {
    public TextView textView;
    public LinearLayout layout;
}

}

任何帮助将不胜感激。

感谢

---

我相信我找到了答案。我所说的不工作的意思是分隔线是可点击的。我所要做的就是在我的适配器中重写 allItemsEnabled 方法以返回 false，并在 isEnabled 方法中创建一个条件以返回分隔符的 false。这是重写的适配器代码。

 public MyCustomAdapter() {
        mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }
    public void addItem(final String item) {
        mData.add(item);
        notifyDataSetChanged();
    }

    public void addSeparatorItem(final String item) {
        mData.add(item);
        // save separator position
        mSeparatorsSet.add(mData.size() - 1);
        notifyDataSetChanged();
    }
    //to make dividers not clickable
    @Override
    public boolean areAllItemsEnabled() {
        return false;
    }
    //to make dividers not clickable
    @Override
    public boolean isEnabled(int position) {
        int type = getItemViewType(position);
        if(type==0){
            return true;
        }
        return false;
    }
    @Override
    public int getItemViewType(int position) {
        return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
    }
    @Override
    public int getViewTypeCount() {
        return TYPE_MAX_COUNT;
    }
    @Override
    public int getCount() {
        return mData.size();
    }
    @Override
    public String getItem(int position) {
        return mData.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        int type = getItemViewType(position);
        System.out.println("getView " + position + " " + convertView + " type = " + type);
        if (convertView == null){
            holder = new ViewHolder();
            switch (type) {
            case TYPE_ITEM:
                convertView = mInflater.inflate(R.layout.row, null);
                holder.textView = (TextView) convertView.findViewById(R.id.label);
                break;
            case TYPE_SEPARATOR:
             convertView = mInflater.inflate(R.layout.item2, null);
             holder.textView = (TextView)convertView.findViewById(R.id.textSeparator);
             holder.layout = (LinearLayout) convertView.findViewById(R.id.layout);
            // holder.layout.setEnabled(false);
            //holder.textView.setEnabled(false);

             break;

            }
            convertView.setTag(holder);
        }else{
            holder = (ViewHolder) convertView.getTag();
        }
        holder.textView.setText(mData.get(position));
        return convertView;

    }
}
public static class ViewHolder {
    public TextView textView;
    public LinearLayout layout;
}

}

Answer 1

我自己找到了答案。我所说的不工作的意思是分隔线是可点击的。我所要做的就是在我的适配器中覆盖 areAllItemsEnabled 方法以返回 false 并在 isEnabled 方法中创建条件(请参阅原始问题的后半部分(。

Answer 2

我认为您遇到的问题与您添加的ClickListener有关，因为您正在放入不可点击的 XML，但在您设置ContentView后，您放置了这一行：

list.setOnItemClickListener(new OnItemClickListener() { ... }

使列表可点击。

Answer 3

回到我对另一篇文章的回答，您只需要在不应点击null的View上设置OnClickListener。所以你会打电话：view.setOnClickListener(null).当然，您需要对视图的引用才能执行此操作...