为什么我的自定义 getView 没有被调用？

Question

我不熟悉制作自定义适配器，但是我已经看到并遵循了我在网上看到的许多示例。我不知道为什么我的 getView 没有被调用。

代码如下：

private String[] numbers = new String[] {

"42", "0", "0", "39", "32", "0", "0", "0", "0", "0", "0", "0", "0", "0",
        "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "45", "0", "51",
        "36", "35", "20", "0", "22", "0", "53", "0", "1", "2", "0", "16",
        "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "5",
        "6", "0", "0", "0", "57", "0", "0", "64", "7", "0", "0", "0" };



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
//other code
grid = (GridView) findViewById(R.id.GridViewGame);
    CustomArrayAdapter adapter = new CustomArrayAdapter(this,
            R.layout.item_layout, R.id.editTextGridItem, numbers);
    grid.setAdapter(adapter);

CustomArrayAdapter 类：

public class CustomArrayAdapter extends ArrayAdapter<String> {

public CustomArrayAdapter(Context context, int resource,
        int textViewResourceId, Object[] objects) {

    super(context, resource, textViewResourceId);

}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View v = convertView;
    if (v == null) {
        LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = inflater.inflate(R.layout.item_layout, null);
    }
    else{
    v.setTag(Integer.toString(position));
    System.out.println(v.getTag());
    }
    return v;
}

总的来说，当发生这种情况时，我试图为 gridview 设置一个视图（在我的情况下，每个单元格都包含 1 个 editText），我想为该 editText 分配一个与其在数字 [] 中的位置匹配的标签。我不确定你现在的代码是否会这样做，但因为 getView 永远不会被调用

Answer 1

您还没有将对象数组传递给父 ArrayAdapter 类，因此它认为要显示的项目为零。

将您的构造函数更改为：

public class CustomArrayAdapter extends ArrayAdapter<Object> {

    public CustomArrayAdapter(Context context, int resource,
        int textViewResourceId, Object[] objects) {

        super(context, resource, textViewResourceId, objects);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        if (v == null) {
            LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = inflater.inflate(R.layout.item_layout, null);
        }
        else{
        v.setTag(Integer.toString(position));
        System.out.println(v.getTag());
        }
        return v;
    }
}