学步园

Spinner的一般使用方法.
（1）定义需要的变量和数组
例如：
Spinner mResizeMode;//Spinner对象
//用于显示的选项列表
final CharSequence[] mResizeModeLabels = new CharSequence[] {
 "Unspecified", "Resize", "Pan", "Nothing"
};
//选项列表项对应的实际设置值
final int[] mResizeModeValues = new int[] {
 WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED,
 WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE,
 WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN,
 WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING,
};
（2）定义ArrayAdapter对象
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(this,
 android.R.layout.simple_spinner_item, mResizeModeLabels
);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

（3）定义选项选择的监听器
    private final OnItemSelectedListener mItemSelectedListener = new OnItemSelectedListener() {
        public void onItemSelected(
                AdapterView<?> parent, View view, int position, long id){
               getWindow().setSoftInputMode(mResizeModeValues[position]);
        }
       
        public void onNothingSelected(AdapterView<?> parent) {
                getWindow().setSoftInputMode(mResizeModeValues[0]);
        }
    };

（4）设置Spinner对象的各属性，并赋值等
mResizeMode = (Spinner)findViewById(R.id.resize_mode);
mResizeMode.setAdapter(adapter);
mResizeMode.setSelection(0);
mResizeMode.setOnItemSelectedListener(mItemSelectedListener);