Android 如何将“删除项”选项添加到微调器下拉列表

我想让用户能够删除微调器下拉列表中显示的项目，如果单击每个项目右侧的“X”按钮，请参见下面的示例

如果用户单击该项，微调器应该像经典的Android默认微调器一样工作

我应该如何扩展和重新定义

微调器

，使其以这种方式工作

---

我想你在找这个：

main活动：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    spnView3 = (Spinner) findViewById(R.id.spnView3);

    ArrayList<String> aList = new ArrayList<String>();
    aList.add("--Select--");
    aList.add("Md. Shahadat Sarker");
    aList.add("Developer");
    aList.add("ErrrorPoint");

    spnView3.setAdapter(new SpinnerAdapter(this, R.layout.spinner_row, aList, aList));

    Toast.makeText(this, "Selected: " + spnView3.getSelectedItem(), 500).show();

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:baselineAligned="false"
    android:orientation="horizontal" >

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="9"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/spnItemName"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="9"
            android:text="Item Name"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/spnItemDel"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="X"
            android:textAppearance="?android:attr/textAppearanceSmall" />
    </LinearLayout>

</LinearLayout>

public View getCustomView(final int position, View convertView, ViewGroup parent){
        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        View rowView =  inflater.inflate(R.layout.spinner_row, parent, false);

        spnItemName = (TextView) rowView.findViewById(R.id.spnItemName);
        spnItemDel = (TextView) rowView.findViewById(R.id.spnItemDel);

        spnItemName.setText(iName.get(position)+"");

        spnItemDel.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(context, "Deleted", Toast.LENGTH_SHORT).show();
                //iName[position] = null;
                iName.remove(position);
                notifyDataSetChanged();
            }
        });
        return rowView;
    }

   if( /*Your condition goes here*/ ){
        spnItemName.setVisibility(View.GONE);
    } else{
        spnItemName.setVisibility(View.VISIBLE);
    }

完整的例子是

编辑部分：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    spnView3 = (Spinner) findViewById(R.id.spnView3);

    ArrayList<String> aList = new ArrayList<String>();
    aList.add("--Select--");
    aList.add("Md. Shahadat Sarker");
    aList.add("Developer");
    aList.add("ErrrorPoint");

    spnView3.setAdapter(new SpinnerAdapter(this, R.layout.spinner_row, aList, aList));

    Toast.makeText(this, "Selected: " + spnView3.getSelectedItem(), 500).show();

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:baselineAligned="false"
    android:orientation="horizontal" >

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="9"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/spnItemName"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="9"
            android:text="Item Name"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/spnItemDel"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="X"
            android:textAppearance="?android:attr/textAppearanceSmall" />
    </LinearLayout>

</LinearLayout>

public View getCustomView(final int position, View convertView, ViewGroup parent){
        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        View rowView =  inflater.inflate(R.layout.spinner_row, parent, false);

        spnItemName = (TextView) rowView.findViewById(R.id.spnItemName);
        spnItemDel = (TextView) rowView.findViewById(R.id.spnItemDel);

        spnItemName.setText(iName.get(position)+"");

        spnItemDel.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(context, "Deleted", Toast.LENGTH_SHORT).show();
                //iName[position] = null;
                iName.remove(position);
                notifyDataSetChanged();
            }
        });
        return rowView;
    }

   if( /*Your condition goes here*/ ){
        spnItemName.setVisibility(View.GONE);
    } else{
        spnItemName.setVisibility(View.VISIBLE);
    }

---

谢谢你的回答，但我还不知道如何准确地创建适配器类。你能告诉我更多的细节吗？没什么，很简单。像其他人一样定制适配器。在getCustomView（）方法中，为每个微调器项扩展微调器\行xml。从xml中获取组件，然后根据需要添加操作。。。假设我想在下拉列表未显示时隐藏remotion选项的“X”，我该怎么做？