Ashraf的另一个解决方案是确保你考虑到屏幕尺寸。你需要在onCreate中获得旋转器，并在设置适配器后设置监听器:

//set your adapter with default or custom spinner cell, then://
serverSpinner.setOnItemSelectedListener(spinnerSelector);
serverSpinner.setSelection(defaultServer);

然后你可以开始改变在旋转器被点击之前显示的视图的文本大小:

private AdapterView.OnItemSelectedListener spinnerSelector = new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
        boolean tabletSize = getResources().getBoolean(R.bool.isTablet);
        boolean largeTablet = getResources().getBoolean(R.bool.isLargeTablet);
        if (tabletSize) { ((TextView)parent.getChildAt(0)).setTextSize(16); }
        else if (largeTablet) { ((TextView)parent.getChildAt(0)).setTextSize(18); }
        else { ((TextView)parent.getChildAt(0)).setTextSize(12); }
    }
    public void onNothingSelected(AdapterView<?> parent) {

    }
};

你所需要做的就是创建如下布局的特定文件夹:

values-sw360dp values-sw600dp values-sw800dp

然后在每个文件夹中添加一个名为“bol . XML”的XML文件:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <bool name="isTablet">false</bool>
    <bool name="isLargeTablet">false</bool>
</resources>

而不是做一个自定义布局来获得一个小尺寸，如果你想使用Android内部的小尺寸布局，你应该使用:

“android.R.layout。simple_gallery_item而不是“android. r.b ayout.simple_spinner_item”。

ArrayAdapter<CharSequence> madaptor = ArrayAdapter
            .createFromResource(rootView.getContext(),
                                R.array.String_visitor,
                                android.R.layout.simple_gallery_item);

它可以减小纺纱器的布局尺寸。这只是个简单的把戏。

如果你想减小下拉列表的大小，使用以下命令:

madaptor.setDropDownViewResource(android.R.layout.simple_gallery_item);

为了防止滞后，你不仅需要在onItemSelected监听器中设置文本属性，还需要在Activity的onCreate方法中设置文本属性(但这有点棘手)。

具体来说，你需要在设置适配器后把这个放在onCreate中:

spinner.setSelection(0, true);
View v = spinner.getSelectedView();
((TextView)v).setTextColor(backgroundColor);

然后把这个放到onItemSelected中:

((TextView) view).setTextColor(backgroundColor);

下面是一个完整的例子:

@Override  
protected void onCreate(Bundle savedInstanceState)
{  
    Spinner spinner = (Spinner) findViewById(R.id.spinner); 

    //Set the choices on the spinner by setting the adapter.  
    spinner.setAdapter(new SpinnerAdapter(toolbar.getContext(), new String[]{"Overview", "Story", "Specifications", "Poll", "Video"}, accentColor, backgroundColor));

    //Set the text color of the Spinner's selected view (not a drop down list view) 
    spinner.setSelection(0, true);
    View v = spinner.getSelectedView();
    ((TextView)v).setTextColor(backgroundColor);

    //Set the listener for when each option is clicked.  
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
    {  

        @Override  
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
        {  
           //Change the selected item's text color  
           ((TextView) view).setTextColor(backgroundColor);
        }  

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

}  

要了解更多细节，请参见我的问题。

只是想对上面的正确答案做个小改动。 为布局目录中的spinner项创建一个自定义XML文件。

spinner_style.xml:

将自定义的颜色和大小设置为该文件中的文本。

 <?xml version="1.0" encoding="utf-8"?>

     <TextView  
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content"
            style="?android:attr/spinnerItemStyle"
            android:singleLine="true"
            android:ellipsize="marquee"
            android:textAlignment="inherit"
            android:textSize="15sp"
            android:textColor="#FF0000"         
            android:padding="5dp"
            />

现在使用这个文件在你的java文件中显示你的spinner项:

ArrayAdapter<String> adapter = new ArrayAdapter<>(this,R.layout.spinner_style,list);
adapter.setDropDownViewResource(R.layout.spinner_style);

你可以有这种类型的转轮适配器，完全定制:

 ArrayAdapter<String> genderAdapter = new ArrayAdapter<String>(getActivity(), R.layout.spinner_text, genderList) {

        public View getView(int position, View convertView, ViewGroup parent) {
            View v = super.getView(position, convertView, parent);
            ((TextView) v).setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
            ((TextView) v).setTextColor(Color.parseColor("#676767"));
            ((TextView) v).setTypeface(vrFont);
            return v;
        }

        public View getDropDownView(int position, View convertView, ViewGroup parent) {
            View v = super.getDropDownView(position, convertView, parent);
            ((TextView) v).setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
            ((TextView) v).setTypeface(vrFont);
            ((TextView) v).setTextColor(Color.parseColor("#676767"));

            if (position == 0) {
                ((TextView) v).setTextColor(Color.parseColor("#979797"));
            }

            return v;
        }

而出来。spinner_text是:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/text1"
style="?android:attr/spinnerItemStyle"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:gravity="center_vertical|left"
android:ellipsize="marquee"
android:maxLines="1"
android:textColor="@color/whiteThree" />

简单而干脆……

private OnItemSelectedListener OnCatSpinnerCL = new AdapterView.OnItemSelectedListener() {
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {

       ((TextView) parent.getChildAt(0)).setTextColor(Color.BLUE);
       ((TextView) parent.getChildAt(0)).setTextSize(5);

    }

    public void onNothingSelected(AdapterView<?> parent) {

    }
};