Question

我实现了自定义微调器：

 public class MyAdapter extends ArrayAdapter<String>
        {

                public MyAdapter(Context context, int textViewResourceId,
                            String[] objects) {
                      super(context, textViewResourceId, objects);
                      // TODO Auto-generated constructor stub
                }
                @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) {

                LayoutInflater inflater=getLayoutInflater();
                View row= inflater.inflate(R.layout.spinner, parent, false);
                TextView label=(TextView)row.findViewById(R.id.textView1);
                label.setText(data1[position]);

                ImageView icon=(ImageView)row.findViewById(R.id.imageView1);
                icon.setImageResource(images[position]);

                return row;
                }

       }

设置为这样的微调器：

spinner_choose_network_spinner.setAdapter(new MyAdapter(this, R.layout.spinner, data1));

我的问题是如何获取我的微调器当前所选项目的textview值？

Answer 1

Object selection = sp.getSelectedItem();

这将返回您可以从

查询信息的所选项目在您的适配器中

，您需要实现getItem(int position)

并返回所需的项目，选择将为getItem(selectedPosition)

假设你的getItem是

public String getItem(int position){
return data1[position];

}

然后String selected = spinner.getSelectedItem();

将返回data1[selectedPosition]

为简单起见，我建议您创建一个新对象

public class MyCustomObject{

    String title;
    int imageResource;

}

然后您的数据数组将

ArrayList<MyCustomObject>data = new ArrayList<MyCustomObject>();

以某种方式填充此数组

现在你的行将是

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

            LayoutInflater inflater=getLayoutInflater();
            View row= inflater.inflate(R.layout.spinner, parent, false);
            TextView label=(TextView)row.findViewById(R.id.textView1);
            label.setText(data.get(position).title);

            ImageView icon=(ImageView)row.findViewById(R.id.imageView1);
            icon.setImageResource(data.get(position).imageResource);

            return row;
            }

然后你的getItem将是

public MyCustomObject getItem(int position){

return data.get(position);
}

然后你的选择将是

MyCustomObject selection = spinner.getSelectedItem();

如果需要，您可以看到selection.title以及selection.imageResource

Answer 2

我找到了一个适用于我的解决方案，onItemSelectedListener看起来像这样：

spnrCategories.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView adapterView, View view, int i, long l) {

            String item = ((TextView)view.findViewById(R.id.spinnerTextViewName)).getText().toString();
            Toast.makeText(MainActivity.this, item , Toast.LENGTH_LONG).show();
        }

        @Override
        public void onNothingSelected(AdapterView adapterView) {
        }
    });

这是我自定义的微调器布局：

<ImageView
    android:id="@+id/spinnerImageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:src="@drawable/baseline_add_black_18dp"
    android:layout_weight="0"
    android:padding="10dp"/>

<TextView
    android:id="@+id/spinnerTextViewName"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/spinnerImageView"
    android:padding="11dp"
    android:ellipsize="end"
    android:maxLines="1"
    android:text="Add category1234"
    android:textColor="#000000"
    android:layout_weight="1"
    android:textSize="20dp" />

<TextView
    android:id="@+id/spinnerTextViewNumber"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="right"
    android:padding="11dp"
    android:text="(0)"
    android:textColor="#000000"
    android:textSize="20dp" />

在此站点找到了我的解决方案： https://www.zoftino.com/android-spinner-custom-adapter-&-layout

获取定制Spinner的项目

2 个答案: