Question

我在Android Studio中使用自定义布局Spinner：用户可以选择具有自定义布局的项目（图像+文本）我需要在选中后仅查看微调器上的文本没有完整的布局

不喜欢这个：

我的自定义Adapter：

public class ColorAdapter2 extends ArrayAdapter<colorItem> {
    LayoutInflater inflater;
    ArrayList< colorItem>  items;
    public ColorAdapter2(Context context, int textViewResourceId,
                         ArrayList< colorItem> objects , LayoutInflater inflater) {
        super(context, textViewResourceId, objects);
        this.inflater = inflater;
        items = objects;
    }

    @Override
    public View getDropDownView(int position, View convertView,
                                ViewGroup parent) {

        return getCustomView(position, convertView, parent);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        return getCustomView(position, convertView, parent);
    }

    public View getCustomView(int position, View convertView, ViewGroup parent) {


        View row = inflater.inflate(R.layout.color_item, parent, false);
        TextView label = (TextView) row.findViewById(R.id.nameColor);
        label.setText(items.get(position).getName());

        ImageView icon = (ImageView) row.findViewById(R.id.iconColor);

        icon.setImageResource(items.get(position).getImageId());
        return row;
    }
}

...和行布局：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:background="@drawable/edittext"
    android:padding="10dp"
    android:layout_margin="10dp">

    <ImageView
        android:id="@+id/iconColor"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_marginLeft="30dp"
        android:src="@drawable/blue_image"/>

    <TextView
        android:id="@+id/nameColor"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

Answer 1

请尝试通过

手动隐藏元素

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                
        view.findViewById(R.id.viewYouWantToHide).setVisibility(View.GONE);
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
    }
});

并且您可能需要恢复隐藏的元素，以便在使用其他元素重新选择微调器或不选择任何元素时可见

Answer 2

使用事件提供的视图将默认文本或微调框上的选定文本或静态文本的隐藏/可见性设置为零。

 public void onItemSelected(AdapterView<?> parentView, View view, int position, long id) {
    TextView tv = (TextView) view;
    tv.setVisibility(View.GONE);
    }

Answer 3

选择微调器项目隐藏您的Imageview并将其设置为Nothing Selected

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
        // your code here

      selectedItemView.findViewById(R.id.iconColor).setVisibility(View.GONE);
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) {
        // your code here
    }

});

Answer 4

因此，您可以收听itemSelectedEvent，然后从中检索ImageView，然后将其设置为＆＃34; GONE＆＃34;。

以下是您将如何做到这一点的示例。

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View view, int position, long id) {
    // your code here
ImageView imageView = view.findViewById(R.id.iconColor);
imageView.setVisibility(View.GONE);
}

@Override
public void onNothingSelected(AdapterView<?> parentView) {
    // your code here
}
});

android spinner - 如何在选择项目后仅显示文本

4 个答案: