找到你的微调器名称和id，然后实现这个方法。

spinnername.setOnItemSelectedListener(new OnItemSelectedListener() {

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

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

你在onCreate或onStart中设置OnItemSelectedListener并不重要——它仍然会在活动创建或启动期间被调用(分别)。 所以我们可以在onCreate中设置它(而不是在onStart中!) 只需添加一个标志来计算第一次初始化:

private Spinner mSpinner;
private boolean mSpinnerInitialized;

然后在onCreate(或onCreateView)中只需:

mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                if (!mSpinnerInitialized) {
                    mSpinnerInitialized = true;
                    return;
                }

                // do stuff
            }

            public void onNothingSelected(AdapterView<?> adapterView) {
                return;
            }
        });

如果你想要一个true onChangedListener()。将初始值存储在处理程序中，并检查它是否已更改。它很简单，不需要全局变量。如果页面上有多个转轮，则有效。

String initialValue = // get from Database or your object
mySpinner.setOnItemSelectedListener(new SpinnerSelectedListener(initialValue));

...

protected class SpinnerSelectedListener implements AdapterView.OnItemSelectedListener {

        private SpinnerSelectedListener() {
            super();
        }

        public SpinnerSelectedListener(String initialValue) {
            this();
            this.initialValue = initialValue;
        }

        private String initialValue;

        // getter and setter removed.  

        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            final String newValue = (String) spinHeight.getItemAtPosition(position);
            if (newValue.equals(initialValue) == false) {
               // Add your code here.  The spinner has changed value. 

               // Maybe useful.   
               // initialValue = newValue;
            }

        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
               // Maybe useful.   
               // initialValue = null; 
        }
    }

对象是你的朋友，使用它们。

https://stackoverflow.com/q/1714426/811625

你可以通过一个简单的检查来避免OnItemSelectedListener()被调用:将当前的选择索引存储在一个整数变量中，并在做任何事情之前在onItemSelected(..)中进行检查。

E.g:

Spinner spnLocale;

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

int iCurrentSelection = spnLocale.getSelectedItemPosition();

spnLocale.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 
    if (iCurrentSelection != i){
            // Your code here
    }
    iCurrentSelection = i;
    } 

    public void onNothingSelected(AdapterView<?> adapterView) {
        return;
    } 
}); 

当然，iCurrentSelection应该在对象范围内，这样才能工作!

spinner-widget的文档说

旋转器不支持项目单击事件。

您应该使用setOnItemSelectedListener来处理您的问题。

默认情况下，您将获得旋转器数组的第一项

value = spinner.getSelectedItem().toString();

无论何时你在旋转器中选择值，它都会给你选择的值

如果你想要选定项目的位置，然后这样做

pos = spinner.getSelectedItemPosition();

以上两个答案均为不应用监听器的情况