Question

大家好！请帮助解决问题。我希望在单击按钮时打开ALERTDIALOG。此对话框在DialogFactors类中实现，并在MainActivity中调用：

MainActivity

AlertDialog对话框= DialogFactory.getDialog（MainActivity.this）;

在DialogFactory中，我创建我的（类）个人适配器，对其进行配置。我想为此适配器创建一个变量，但是我将“ this”写入CONTEXT变量，并引发错误。

public class DialogFactory extends ListActivity {

    public static AlertDialog getDialog(Activity activity) {

        View view = activity.getLayoutInflater().inflate(R.layout.lsview, null); // 2. Создал вьюшку
        ListView lv = (ListView) view.findViewById(R.id.lisV); // 1. Создаю ListView
        String values[] = { "Android", "iPhone", "WindowsMobile",
                "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
                "Linux", "OS/2" }; // 3. Массив с данными


        AlertDialog.Builder builder = new AlertDialog.Builder(activity);


        // use your custom layout

        MyAdapter adapter = new MyAdapter(activity, values ); //error

        lv.setAdapter(adapter);
        builder.setView(view);
        return builder.create();
    }

    class MyAdapter extends ArrayAdapter<String>{
        Context context;
        String rvalues[];

        public MyAdapter(Context c, String values[]) {
            super(c, R.layout.listviex, R.id.textView12);
            this.context = c;
            this.rvalues = values;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            LayoutInflater li = (LayoutInflater)getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View lx = li.inflate(R.layout.listviex, parent, false); // 2. Создал вьюшку
            TextView tv = lx.findViewById(R.id.textView12);
            tv.setText(rvalues[position]);
            return lx;
        }
    }
}

Answer 1

您必须将getDialog设为非静态，或将MyAdapter设为静态！

public AlertDialog getDialog(Activity activity) {...

或

 public static class MyAdapter extends ArrayAdapter<String> {...

更新：

如果您将getDialog设为非静态，则必须首先获取DialogFactory类的新实例：

DialogFactory dialogFactory = new DialogFactory();

然后：

AlertDialog dialog = dialogFactory.getDialog(this);

我无法配置个人适配器

1 个答案: