android - 将 asynctask 值传递给 mainactivity 时出现上下文错误

Question

在我的主要 Activity 中，如果我应用此代码，我会收到错误消息 gridviewadapter() cannot be applyed, 这是上下文中的问题。

  GridViewAdapter adapter = new GridViewAdapter(this, R.layout.grid_item_layout, result);

如果我这样应用它:

public MainActivity (Context context) {
        mContext = context;

    }
      GridViewAdapter adapter = new GridViewAdapter(mContext, R.layout.grid_item_layout, result);

我在 logcat 中遇到了这个错误

java.lang.InstantiationException: can't instantiate class com.justedhak.www.i.MainActivity; no empty constructor

我正在尝试将 asynctask arraylist 值传递给 mainactivity .. 如何解决？

Answer 1

尝试

GridViewAdapter adapter = new GridViewAdapter(MainActivity.this, R.layout.grid_item_layout, result);