Question

我有以下代码，在Spinner上设置字体类型

private class MySpinnerAdapter extends ArrayAdapter<CharSequence> {
    private Context context;

    public MySpinnerAdapter(Context context, int textViewResourceId,
            List<CharSequence> objects) {
        super(context, textViewResourceId, objects);
        this.context = context;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        super.getView(position, convertView, parent);
        TextView item = (TextView) convertView.findViewById(R.id.item);
        FontUtils.setRobotoFont(context, item);
        return convertView;
    }

}

的onCreate

MySpinnerAdapter packageAdapter = (MySpinnerAdapter) ArrayAdapter
            .createFromResource(this, R.array.packageList,
                    R.layout.packageitem);

R.layout.packageItem

<?xml version="1.0" encoding="UTF-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/item"
    style="@style/completedProminent"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="@color/tabSelected"
    android:gravity="center"
    android:layout_gravity="center" />

截至目前，我正在获取ClassCastException @onCreate（上面的源代码行）。我在这里做错了什么？

Answer 1

试试这个..

MySpinnerAdapter packageAdapter = (MySpinnerAdapter)ArrayAdapter.createFromResource (this,R.layout.packageitem,R.array.packageList);‌.

构造函数将context, int, list作为参数，并且您正在传递context, list, int.这就是您获得ClassCastException的原因。

Answer 2

最终起作用的是

private class MySpinnerAdapter extends ArrayAdapter<CharSequence> {
    private Context context;

    public MySpinnerAdapter(Context context, String[] objects, int textViewResourceId) {            
        super(context, textViewResourceId, objects);
        this.context = context;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View returnObject = super.getView(position, convertView, parent);
        TextView item = (TextView) findViewById(R.id.item);
        FontUtils.setRobotoFont(context, item);
        return returnObject;
    }
}

<强>的onCreate

MySpinnerAdapter packageAdapter = new MySpinnerAdapter(this,
            getResources().getStringArray(R.array.packageList),
            R.layout.packageitem);

设置Spinner项目的文本字体

2 个答案: