如何以编程方式将字体自定义字体设置为Spinner文本？

Question

我的资产文件夹中有一个ttf字体文件.我知道如何将它用于textviews:

Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
textview1.setTypeface(externalFont);

我已经定义了在我自己的xml文件中查找我的微调器文本(如在android中的usuall):

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+android:id/text1"
style="?android:attr/spinnerItemStyle"
android:singleLine="true"
android:textColor="#ffffff"
android:gravity="center" 
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee" />

我只是无法从代码中引用此textview,我总是得到空指针异常.我尝试过:

TextView spinner_text=(TextView)findViewById(R.id.text1);
spinner_text.setTypeface(externalFont);

即使我自己的xml中定义的微调器文本,是否可以选择我的外部字体？

谢谢.

编辑回答:

这有效:

String [] items = new String[2];
    items[0]="Something1";
    items[1]="Something2";

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                    R.layout.spinaca, items) {

         public View getView(int position, View convertView, ViewGroup parent) {
                 View v = super.getView(position, convertView, parent);

                 Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
                 ((TextView) v).setTypeface(externalFont);

                 return v;
         }


         public View getDropDownView(int position,  View convertView,  ViewGroup parent) {
                  View v =super.getDropDownView(position, convertView, parent);

                 Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
                 ((TextView) v).setTypeface(externalFont);
                 v.setBackgroundColor(Color.GREEN);

                 return v;
         }
 };


     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);                                 
     spinner.setAdapter(adapter);

可能有必要添加

import android.view.ViewGroup;

到文件顶部的导入列表.出于某种原因,当Eclipse无法识别代码中涉及的ViewGroup类时,它不会提出此建议.

Answer 1

这对我有用(使用CommonsWare和gsanllorente的答案):

private static class MySpinnerAdapter extends ArrayAdapter<String> {
    // Initialise custom font, for example:
    Typeface font = Typeface.createFromAsset(getContext().getAssets(),
                        "fonts/Blambot.otf");

    // (In reality I used a manager which caches the Typeface objects)
    // Typeface font = FontManager.getInstance().getFont(getContext(), BLAMBOT);

    private MySpinnerAdapter(Context context, int resource, List<String> items) {
        super(context, resource, items);
    }

    // Affects default (closed) state of the spinner
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        TextView view = (TextView) super.getView(position, convertView, parent);
        view.setTypeface(font);
        return view;
    }

    // Affects opened state of the spinner
    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        TextView view = (TextView) super.getDropDownView(position, convertView, parent);
        view.setTypeface(font);
        return view;
    }
}

如果你像我一样最初使用ArrayAdapter.createFromResource()和一个数组资源填充Spinner (如Spinner文档中那样),那么你就像这样使用MySpinnerAdapter:

MySpinnerAdapter<String> adapter = new MySpinnerAdapter(
        getContext(),
        R.layout.view_spinner_item,
        Arrays.asList(getResources().getStringArray(R.array.my_array))
);
spinner.setAdapter(adapter);

Answer 2

您可以通过自己的自定义应用字体SpinnerAdapter,in getView()和getDropDownView().

Answer 3

如果在另一个文件中实现适配器,则可以从适配器的构造函数访问"getAssets()"函数,因为您将Context作为参数.

public class YourItemAdapter extends ArrayAdapter<String> {
int recurso;
Typeface tf;

public YourItemAdapter(Context _context, int _resource,
        List<String> _items) {

    super(_context, _resource, _items);
    recurso=_resource;
    tf=Typeface.createFromAsset(_context.getAssets(),"font/digital-7.ttf");
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    //You can use the new tf here.
    TextView spinner_text=(TextView)findViewById(R.id.text1);
    spinner_text.setTypeface(tf);
    }
}