android - 使用类加载器从资产中获取字体文件时出现 NullPointer 异常

Question

我有这段代码可以从assets文件夹中获取字体文件：

public static Typeface getMyFont(Context context, String resource) {
    InputStream is;
    Typeface font = null;
    ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

    AssetManager assetManager = context.getResources().getAssets();

    try {
        is = classLoader.getResourceAsStream(resource);
        is = assetManager.open(resource);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = null;
        while ((line = br.readLine()) != null) {
            Log.e("wwwww", line);
        }
        br.close();
        font = Typeface.createFromAsset(context.getAssets(), line);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return font;
}

这里的资源是链接（快捷方式）的assets文件夹中的font / MYFONT.ttf，但我在这一行得到空指针异常：

font = Typeface.createFromAsset(context.getAssets(), line);

Answer 1

我也遇到了同样的问题，您可以尝试使用 try & catch 块围绕添加字体的部分来捕获空指针异常，因此，在我的情况下，

Typeface comingsoon = Typeface.createFromAsset(getApplicationContext().getAssets(), "ComingSoon.ttf");

变成

try{
    Typeface comingsoon = Typeface.createFromAsset(getApplicationContext().getAssets(), "ComingSoon.ttf");
}
catch(NullPointerExecption e){
     //...
}

Answer 2

    my_font = Typeface.createFromAsset(context.getAssets(), "fonts/MYFONT.ttf");