android - 如何在 Android 中获取 BaseAdapter 的上下文

Question

我有一个名为BinderDataextends的类BaseAdapter。我想获得基类上下文。我尝试使用getContext()，但在BaseAdapter.

我怎样才能得到这个类的上下文？

Answer 1

另一种解决方案-

如果您有父母，则可以像这样直接访问上下文-

 public class SampleAdapter extends BaseAdapter {

            LayoutInflater inflater;

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                if(inflater == null){
                Context context = parent.getContext();
                inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                }
                ...
                ...

                return convertView;
            }

    }

Answer 2

创建一个将 aContext作为其参数之一的构造函数并将其存储在私有变量中。

public class SampleAdapter extends BaseAdapter {
    private Context context;

    public SampleAdapter(Context context) {
        this.context = context;
    }

    /* ... other methods ... */
}

Answer 3

Context context = parent.getContext();