Android Spinner getView getDropDownView 的区别

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getView 设置的是Spinner下拉打开前的布局

getDropDownView 设置的是下拉打开后，下拉的布局

自定义的布局，随便怎么设置都行。

下面设置使得布局都一样。布局文件就是一个简单的layout中放个textview

commandList=new ArrayList<>();commandList.add("aa");commandList.add("aabb");

 adapter=new SpinnerAdapter(this,R.layout.spinner_title,commandList);spinner.setAdapter(adapter);

private class SpinnerAdapter extends ArrayAdapter<String>{    public SpinnerAdapter(Context context, int resource, List<String> objects) {        super(context, resource, objects);    }    @NonNull    @Override    public View getView(int position, View convertView, ViewGroup parent) {        View row = getLayoutInflater().inflate(R.layout.spinner_title, parent, false);        TextView textView= (TextView) row.findViewById(R.id.title);        textView.setText(getItem(position));        return row;    }    @Override    public View getDropDownView(int position, View convertView, ViewGroup parent) {        View row = getLayoutInflater().inflate(R.layout.spinner_title, parent, false);        TextView textView= (TextView) row.findViewById(R.id.title);        textView.setText(getItem(position));        return row;    }}

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