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みなさん、前もって申し訳ありませんが、この質問に対する答えを必死に探していました。私は理論的に私が使用することになっていることを知っています

i.putExtra("jsonArray", jArray.toString());

私の意図では、解決できないか、エラーが発生しています。

人の名前と配列からの ID (クエリからの ID と名前) を渡そうとしています。それを渡して、次のアクティビティの次のクエリでその ID を使用できるようにします。

                Person resultRow = new Person();
                //set that person's attributes

                resultRow.id = json_data.getString("id");
                resultRow.icon = json_data.getString("birthday");
                resultRow.name = json_data.getString("name");
                resultRow.address = json_data.getString("address");
                resultRow.city = json_data.getString("city");

                //this is our arrayList object, we add our Person object to it
                arrayOfWebData.add(resultRow);
            }
        }
        catch(JSONException e){
            Log.e("log_tag", "Error parsing data "+e.toString());
        }

        //get our listview
        ListView myListView = (ListView)findViewById(R.id.myListView);

        //we initialize our fancy adapter object, we already declared it above
        //in the class definition
        aa=new FancyAdapter();

        // here we set the adapter, this turns it on
        myListView.setAdapter(aa);
        myListView.setOnItemClickListener(onListClick);
        }
        catch (Exception e)
        {
            // this is the line of code that sends a real error message to the log
            Log.e("ERROR", "ERROR IN CODE: " + e.toString());

            // this is the line that prints out the location in
            // the code where the error occurred.
            e.printStackTrace();
        } 
    }

    // here is where the magic begins
    //we extend our ArrayAdapter, and use it to create custom views 
    //as well as execute other more complicated functions
    //this time, our ArrayAdapter is an array of Persons, instead of strings like in other tutorials
    class FancyAdapter extends ArrayAdapter<Person> {
        FancyAdapter() {
            super(ListActivity.this, android.R.layout.simple_list_item_1, arrayOfWebData);
        }

        public View getView(int position, View convertView,
                ViewGroup parent) {
            ViewHolder holder;

            //we call an if statement on our view that is passed in,
            //to see if it has been recycled or not.  if it has been recycled,
            //then it already exists and we do not need to call the inflater function
            //this saves us A HUGE AMOUNT OF RESOURCES AND PROCESSING
            //this is the proper way to do it
            if (convertView==null) {                         
                LayoutInflater inflater=getLayoutInflater();
                convertView=inflater.inflate(R.layout.row, null);

                //here is something new.  we are using a class called a view holder
                holder=new ViewHolder(convertView);
                //we are using that class to cache the result of the findViewById function
                //which we then store in a tag on the view 
                convertView.setTag(holder);
            }
            else {
                holder=(ViewHolder)convertView.getTag();
            }
            holder.populateFrom(arrayOfWebData.get(position));

            return(convertView);
        }           
    }

    class ViewHolder {
        public TextView name=null;
        public TextView address=null;
        public TextView icon=null;

        ViewHolder(View row) {
            name=(TextView)row.findViewById(R.id.name);
            address=(TextView)row.findViewById(R.id.birthday);
            birthday=(TextView)row.findViewById(R.id.favorite_color);
        }
        //notice we had to change our populate from to take an arguement of type person
        void populateFrom(Person r) {
            name.setText(r.name);
            address.setText(r.address);
            icon.setText(r.birthday);
        }
    }

    private AdapterView.OnItemClickListener onListClick=new android.widget.AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Intent i= new Intent(ListActivity.this, bar.class);
            i.putExtra("jsonArray", Person(name).toString());
            startActivity(i);
        }
    };
}
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1 に答える 1

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クラス Person にParcelableを実装して、クラス Person の現在のインスタンスを送信することもできます。

または、その人の ID を次のアクティビティにインテント エクストラで送信し、ID を比較するために Json を取得します。

intent.putExtra("PERSON_ID", current_person.id);
于 2012-08-19T23:19:50.393 に答える