如何获得Spinner值？

Question

在Android中,我试图通过监听器获取选定的Spinner值.

获得微调器价值的最佳方法是什么？

Answer 1

Spinner mySpinner = (Spinner) findViewById(R.id.your_spinner);
String text = mySpinner.getSelectedItem().toString();

Answer 2

选择某些内容时,Spinner应触发"OnItemSelected"事件:

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
        Object item = parent.getItemAtPosition(pos);
    }
    public void onNothingSelected(AdapterView<?> parent) {
    }
});

Answer 3

假设这是带有微调条目(即标题)和值的xml:

<resources>
    <string-array name="size_entries">
        <item>Small</item>
        <item>Medium</item>
        <item>Large</item>
    </string-array>

    <string-array name="size_values">
        <item>12</item>
        <item>16</item>
        <item>20</item>
    </string-array>
</resources>

这是你的微调器:

<Spinner
    android:id="@+id/size_spinner"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:entries="@array/size_entries" />

然后在您的代码中获取条目:

Spinner spinner = (Spinner) findViewById(R.id.size_spinner);
String size = spinner.getSelectedItem().toString(); // Small, Medium, Large

并获得价值:

int spinner_pos = spinner.getSelectedItemPosition();
String[] size_values = getResources().getStringArray(R.array.size_values);
int size = Integer.valueOf(size_values[spinner_pos]); // 12, 16, 20

Answer 4

是的,你可以注册通过一个倾听者setOnItemSelectedListener(),足以证明这里.

Answer 5

View view =(View) getActivity().findViewById(controlId);
Spinner spinner = (Spinner)view.findViewById(R.id.spinner1);
String valToSet = spinner.getSelectedItem().toString();

Answer 6

如果您已经知道该项目是a String,我更喜欢:

String itemText = (String) mySpinner.getSelectedItem();

调用toString()上的Object,你知道是String好像不仅仅是铸造了一个更迂回的路径Object来String.

Answer 7

将 setOnItemSelectedListener 添加到微调器引用并获取类似的数据`

 mSizeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) {
            selectedSize=adapterView.getItemAtPosition(position).toString();