以下のコードは正常に動作します。 JSONレスポンスの値をリストに入力し、アイテムの選択とそのアイテムの番号の表示に関する新しいアクティビティを開きます。新しいアクティビティでJSON値を使用してListViewから値を取得するにはどうすればよいですか?
私の質問は、選択したアイテムをそのアイテムからの特定の情報でアクティビティを開く方法です。例:私はリストから「Bob」を選択し、ボブの名前、彼の電子メール、彼の電話で新しい活動に移ります。 JSONが送信した可能性のある他の値。私が「ジョージ」を選択すると、それはジョージの詳細と同じですが、同じことを行います。
私自身でこれを実行しようとしましたが、失敗しました。どんな助けもありがとうございます。
Details.javaコード:
public class Details extends AppCompatActivity implements AdapterView.OnItemClickListener {
// Log tag
private static final String TAG = Details.class.getSimpleName();
private static String url = "removed";
private List<LoadUsers> detailList = new ArrayList<LoadUsers>();
private ListView listView;
private CustomListAdapter adapter;
private Button ShowDetailsButton;
private Button AddDetails;
private ProgressDialog pDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.details_view);
listView = (ListView) findViewById(R.id.lv);
adapter = new CustomListAdapter(this, detailList);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
ShowDetailsButton = (Button) findViewById(R.id.show_details);
AddDetails = (Button) findViewById(R.id.add_details);
// Progress dialog
pDialog = new ProgressDialog(this);
pDialog.setCancelable(false);
pDialog.setMessage("Loading...");
// changing action bar color
// getActionBar().setBackgroundDrawable(
// new ColorDrawable(Color.parseColor("#1b1b1b")));
ShowDetailsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
detailList.clear();
// Showing progress dialog before making http request
showPDialog();
// Creating volley request obj
JsonArrayRequest detailsReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
LoadUsers details = new LoadUsers();
details.setTitle(obj.getString("name"));
details.setThumbnailUrl(obj.getString("image"));
details.setEmail(obj.getString("email"));
details.setPhone(obj.getString("phone"));
// adding to array
detailList.add(details);
} catch (JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(detailsReq);
}
});
AddDetails.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(Details.this, MoreDetails.class);
startActivity(i);
}
});
}
private void showPDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hidePDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(this, "Item Clicked: " + position, Toast.LENGTH_SHORT).show();
Intent i = new Intent(Details.this, onDetailsSelect.class);
startActivity(i);
}
}
CustomListAdapter.javaコード:
public class CustomListAdapter extends BaseAdapter {
public Activity activity;
private LayoutInflater inflater;
private List<LoadUsers> usersItems;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
public CustomListAdapter(Activity activity, List<LoadUsers> usersItems) {
this.activity = activity;
this.usersItems = usersItems;
}
@Override
public int getCount() {
return usersItems.size();
}
@Override
public Object getItem(int location) {
return usersItems.get(location);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_row, null);
if (imageLoader == null)
imageLoader = AppController.getInstance().getImageLoader();
NetworkImageView thumbNail = (NetworkImageView) convertView.findViewById(R.id.thumbnail);
TextView title = (TextView) convertView.findViewById(R.id.title);
TextView email = (TextView) convertView.findViewById(R.id.lvemail);
TextView phone = (TextView) convertView.findViewById(R.id.lvphone);
// getting user data for the row
LoadUsers m = usersItems.get(position);
// thumbnail image
thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);
// title
title.setText(m.getTitle());
// email
email.setText("Email: " + String.valueOf(m.getEmail()));
// phone
phone.setText("Phone: " + String.valueOf(m.getPhone()));
return convertView;
}
}
OPEされる新しいアクティビティ項目の選択に定義さ: onDetailsSelect.java:
public class onDetailsSelect extends AppCompatActivity {
Toolbar toolbar;
ActionBarDrawerToggle mActionBarDrawerToggle;
DrawerLayout drawerLayout;
private TextView title, email, phone;
private List<LoadUsers> usersItems;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_onuserselect);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
NetworkImageView thumbNail = (NetworkImageView) findViewById(R.id.thumbnail);
title = (TextView) findViewById(R.id.title);
email = (TextView) findViewById(R.id.lvemail);
phone = (TextView) findViewById(R.id.lvphone);
}
}
作品。ありがとうございました。 – BrownT