如何在Android中的微调器中居中文本

Question

我的LinearLayour中有一个Spinner.

我试图在微调器中居中文本:

这是我对该元素的XML:

 <Spinner
    android:id="@+id/project_Spinner"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginRight="50dp"
    android:layout_marginLeft="50dp"
    android:padding="1dip"


    android:prompt="@string/spinner_title"
/>

活动中微调器的声明:

// Creating adapter for spinner
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, NomProjets);

    // Drop down layout style - list view with radio button
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    // attaching data adapter to spinner
    spinner.setAdapter(dataAdapter);

谢谢,

Answer 1

实际为其创建项目的组件Spinner是适配器.所以你应该自定义它(通过覆盖getView()方法)来返回居中的TextView小部件.

在您的情况下,new ArrayAdapter<String> ...使用以下代码替换初始化:

ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, NomProjets)
{
    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
        return setCentered(super.getView(position, convertView, parent));
    }

    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent)
    {
        return setCentered(super.getDropDownView(position, convertView, parent));
    }

    private View setCentered(View view)
    {
        TextView textView = (TextView)view.findViewById(android.R.id.text1);
        textView.setGravity(Gravity.CENTER);
        return view;
    }
};