CursorAdapter的不同行布局 [英] cursoradapter with different row layouts

问题描述

我试图创建使用两种不同的布局取决于光标一些数据的自定义的CursorAdapter。我一直在阅读有关压倒一切的getViewTypeCount（）和getItemViewType（）要做到这一点，但我似乎无法弄清楚如何实施这一..

这是我的code为bindView及新方法：

  @覆盖
公共无效bindView（查看视图，上下文的背景下，光标光标）{
    TextView的tView =（TextView中）view.findViewById（R.id.TextView1）;
    tView.setText（以下简称文）;
}

@覆盖
公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
    返回mInflater.inflate（R.layout.item1，父母，假）;
}
 

编辑： 现在，我得到这个工作，但我想选择什么样的RowLayout取决于光标一些数据使用，我不能让那个工作..任何人有一些想法？

  @覆盖
公众诠释getItemViewType（INT位置）{
    返回位置％2;
}

@覆盖
公众诠释getViewTypeCount（）{
    返回2;
}

@覆盖
公共无效bindView（查看视图，上下文的背景下，光标光标）{
    ViewHolder支架=（ViewHolder）view.getTag（）;
    holder.txtAddress
            .setText（布拉布拉）;
}

@覆盖
公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
    ViewHolder持有人=新ViewHolder（）;
    视图V = NULL;
    整型= cursor.getPosition（）％2;
    如果（类型== 0）{
        V = mInflater.inflate（R.layout.item，父母，假）;
    } 其他 {
        V = mInflater.inflate（R.layout.item2，父母，假）;
    }

    holder.txtAddress =（TextView中）v.findViewById（R.id.tvName）;

    v.setTag（保持器）;
    返回伏;
}
 

解决方案

所以，我终于得到了它的工作。对于有兴趣的工作code的那些是如下：

 私人诠释getItemViewType（光标指针）{
    字符串类型= cursor.getString（cursor.getColumnIndex（类））;
    如果（type.equals（1））{
        返回0;
    } 其他 {
        返回1;
    }
}

@覆盖
公众诠释getItemViewType（INT位置）{
    光标光标=（光标）的getItem（位置）;
    返回getItemViewType（光标）;
}

@覆盖
公众诠释getViewTypeCount（）{
    返回2;
}

@覆盖
公共无效bindView（查看视图，上下文的背景下，光标光标）{
    ViewHolder支架=（ViewHolder）view.getTag（）;
    holder.textView
            .setText（cursor.getString（cursor.getColumnIndex（身体）））;
}

@覆盖
公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
    ViewHolder持有人=新ViewHolder（）;
    视图V = NULL;

    如果（cursor.getString（cursor.getColumnIndex（类型））。等于（1））{
        V = mInflater.inflate（R.layout.message1，父母，假）;
        holder.textView =（TextView中）V
                .findViewById（R.id.textView1）;
    } 其他 {
        V = mInflater.inflate（R.layout.message2，父母，假）;
        holder.textView =（TextView中）V
                .findViewById（R.id.textView2）;
    }

    v.setTag（保持器）;
    返回伏;
}

公共静态类ViewHolder {
    公众的TextView TextView的;
}
 

I'm trying to create a custom cursoradapter that will use two different layouts depending on some data in the cursor. I keep reading about 'overriding getViewTypeCount() and getItemViewType()' to make this happen but I can't seem to figure out how to implement this..

This is my code for the bindView and new View methods:

@Override
public void bindView(View view, Context context, Cursor cursor) {
    TextView tView = (TextView) view.findViewById(R.id.TextView1);
    tView.setText("The text");
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    return mInflater.inflate(R.layout.item1, parent, false);
}

.

EDIT: Now I got this working, but I want to choose what rowlayout to use depending on some data in the cursor and I can't get that working.. anybody got some ideas?

@Override
public int getItemViewType(int position) {
    return position % 2;
}

@Override
public int getViewTypeCount() {
    return 2;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
    ViewHolder holder = (ViewHolder) view.getTag();
    holder.txtAddress
            .setText("blabla");
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    ViewHolder holder = new ViewHolder();
    View v = null;
    int type = cursor.getPosition() % 2;
    if(type == 0) {
        v = mInflater.inflate(R.layout.item, parent, false); 
    } else {
        v = mInflater.inflate(R.layout.item2, parent, false);
    }

    holder.txtAddress = (TextView) v.findViewById(R.id.tvName);

    v.setTag(holder);
    return v;
}

解决方案

So I finally got it work. For the ones interested the working code is below:

private int getItemViewType(Cursor cursor) {
    String type = cursor.getString(cursor.getColumnIndex("type"));
    if (type.equals("1")) {
        return 0;
    } else {
        return 1;
    }
}

@Override
public int getItemViewType(int position) {
    Cursor cursor = (Cursor) getItem(position);
    return getItemViewType(cursor);
}

@Override
public int getViewTypeCount() {
    return 2;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
    ViewHolder holder = (ViewHolder) view.getTag();
    holder.textView
            .setText(cursor.getString(cursor.getColumnIndex("body")));
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    ViewHolder holder = new ViewHolder();
    View v = null;

    if (cursor.getString(cursor.getColumnIndex("type")).equals("1")) {
        v = mInflater.inflate(R.layout.message1, parent, false);
        holder.textView = (TextView) v
                .findViewById(R.id.textView1);
    } else {
        v = mInflater.inflate(R.layout.message2, parent, false);
        holder.textView = (TextView) v
                .findViewById(R.id.textView2);
    }

    v.setTag(holder);
    return v;
}

public static class ViewHolder {
    public TextView textView;
}

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