【发布时间】：2017-04-14 07:24:13
【问题描述】：
我有可扩展的 Lisview，我将数据从服务器加载到 listview。
还有一些带有edittext的行。所以每当我按下右键进行编辑时， edittext 可聚焦并编辑该值并再次按下该按钮值将转到服务器。
但是从这里它并没有保存它，它又恢复了原来的价值。 但是当我刷新相同的活动值时发生了变化。
如何使用新的可编辑值加载可扩展列表视图？
这是我的代码：-这是我的活动
public class EditSwitch1Activity extends AppCompatActivity {
ExpandableListAdapter1 listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
SharedPreferences pref;
SharedPreferences.Editor editor;
private TextView edit_text;
HashMap<String, List<String>> listDataChild;
private TextView back;
private String roomId;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_editswitch1);
pref = PreferenceManager.getDefaultSharedPreferences(EditSwitch1Activity.this);
editor = pref.edit();
expListView = (ExpandableListView) findViewById(R.id.lvExp);
back = (TextView) findViewById(R.id.back);
expListView.setItemsCanFocus(true);
// preparing list data
Window window = EditSwitch1Activity.this.getWindow();
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(EditSwitch1Activity.this.getResources().getColor(R.color.color_statusbar));
roomId = getIntent().getStringExtra("roomId");
String serverURL = "http://dashboard.droidhomes.in/api/module?room_id=" + roomId;
// Use AsyncTask execute Method To Prevent ANR11 Problem
new LongOperation1().execute(serverURL);
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
private class LongOperation1 extends AsyncTask<String, Void, Void> {
// Required initialization
// private final HttpClient Client = new DefaultHttpClient();
private String Content;
private String Error = null;
private ProgressDialog Dialog = new ProgressDialog(
EditSwitch1Activity.this);
String data = "";
protected void onPreExecute() {
// NOTE: You can call UI Element here.
//Dialog.setMessage("Please wait..");
//Dialog.show();
// data += "Authorization:eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6Ijk5MjEyMzQ4MTMiLCJyb2xlIjoiY3VzdG9tZXIiLCJpZCI6IjU4M2VhZjI0OWM1ZDM5MTgyMzk0MTkzNyIsIm5hbWUiOiJWaWpheSBNYWxob3RyYSJ9.aF-vgNvOSSk_mbi_cTGufG2JZRrmP38zPFGn9UK9iMA";
}
// Call after onPreExecute method
protected Void doInBackground(String... urls) {
/************ Make Post Call To Web Server ***********/
BufferedReader reader = null;
// final String ALLOWED_URI_CHARS = "@#&=*+-_.,:!?()/~'%";
// String urlEncoded = Uri.encode(path, ALLOWED_URI_CHARS);
// Send data
try {
// Defined URL where to send data
URL url = new URL(urls[0]);
// Send POST data request
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
//conn.setDoOutput(true);
String auth_token = pref.getString("auth_token", "");
conn.setRequestProperty("Authorization", auth_token);
//conn.setRequestMethod("GET");
//byte[] encodedPassword = ( "Authorization" + ":" + "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6Ijk5MjEyMzQ4MTMiLCJyb2xlIjoiY3VzdG9tZXIiLCJpZCI6IjU4M2VhZjI0OWM1ZDM5MTgyMzk0MTkzNyIsIm5hbWUiOiJWaWpheSBNYWxob3RyYSJ9.aF-vgNvOSSk_mbi_cTGufG2JZRrmP38zPFGn9UK9iMA" ).getBytes();
//BASE64Encoder encoder = new BASE64Encoder();
// Get the server response
reader = new BufferedReader(new InputStreamReader(
conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while ((line = reader.readLine()) != null) {
// Append server response in string
sb.append(line + "\n");
}
// Append Server Response To Content String
Content = sb.toString();
} catch (Exception ex) {
Error = ex.getMessage();
} finally {
try {
reader.close();
} catch (Exception ex) {
}
}
/*****************************************************/
return null;
}
protected void onPostExecute(Void unused) {
// NOTE: You can call UI Element here.
// Close progress dialog
// Content=Content.replaceAll("<string>","");
// Content=Content.replaceAll("</string>", "");
Dialog.dismiss();
if (Error != null) {
Toast toast = Toast.makeText(getApplicationContext(),
"Bad request", Toast.LENGTH_LONG);
toast.show();
// uiUpdate.setText("Output : " + Error);
} else {
// Show Response Json On Screen (activity)
// uiUpdate.setText(Content);
/****************** Start Parse Response JSON Data *************/
// String OutputData = "";
// JSONObject jsonResponse;
Gson gson = new Gson();
// Map messageObjMap = new Gson().fromJson(Content, Map.class);
// String type = messageObjMap.get("messageType").toString();
// Song song = gson.fromJson(message, Song.class);
final SearchResponse response = gson.fromJson(Content,
SearchResponse.class);
if (response.getStatus() == true) {
List<String> newlist = new ArrayList<String>();
for (int i = 0; i < response.getModule().length; i++) {
listDataHeader.add(response.getModule()[i].getModule_name());
newlist = new ArrayList<String>();
for (int j = 0; j < response.getModule()[i].getNo_of_switches(); j++) {
if (response.getModule()[i].getModuleId().getModuleid().equals(response.getModule()[i].getSwitches()[j].getModuleId().getModuleid())) {
newlist.add(response.getModule()[i].getSwitches()[j].getSwitch_name());
}
listDataChild.put(response.getModule()[i].getModule_name(), newlist);
}
}
listAdapter = new ExpandableListAdapter1(EditSwitch1Activity.this, listDataHeader, listDataChild, response);
// setting list adapter
expListView.setAdapter(listAdapter);
listAdapter.notifyDataSetChanged();
} else {
Toast.makeText(getApplicationContext(), "status:-" + response.getStatus(), Toast.LENGTH_SHORT).show();
}
}
}
}
@Override
protected void onResume() {
super.onResume();
}
}
还附加了可扩展的列表视图适配器：-
public class ExpandableListAdapter1 extends BaseExpandableListAdapter {
private String childText;
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
private ArrayList<String> newlist;
private ArrayList<String> newlist1;
ArrayList<String>list1;
private SearchResponse response;
private Boolean onclick = true;
public ExpandableListAdapter1(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData, SearchResponse response) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
this.response = response;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
childText = (String) getChild(groupPosition, childPosition);
final ViewHolder holder;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.txtListChild.setText(childText); // Here whatever you will type in edittext will be overwritten by the value of 'childText.getTotal'. So after you are done writing in edit text make sore you change that in "_listDataChild" list.
newlist = new ArrayList<String>();
newlist1 = new ArrayList<String>();
list1=new ArrayList<>();
list1.add(childText);
final TextView txtListChild1 = (TextView) convertView
.findViewById(R.id.flash1);
txtListChild1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (onclick) {
txtListChild1.setText("Save");
holder.txtListChild.setEnabled(true);
onclick = false;
} else {
// ArrayList<String> itemList=new ArrayList<String>();
//itemList.add();
onclick = true;
txtListChild1.setText("Edit");
holder.txtListChild.setEnabled(false);
newlist.add(response.getModule()[groupPosition].getSwitches()[childPosition].getSwitchId().getId());
newlist1.add(holder.txtListChild.getText().toString());
String url = "http://dashboard.droidhomes.in/api/switch";
RequestQueue requestQueue = Volley.newRequestQueue(_context);
JSONObject dataObj = new JSONObject();
try {
JSONArray cartItemsArray = new JSONArray();
JSONObject cartItemsObjedct;
for(int i=0;i<newlist.size();i++){
cartItemsObjedct = new JSONObject();
cartItemsObjedct.putOpt("switch_id", newlist.get(i));
cartItemsObjedct.putOpt("switch_name",newlist1.get(i));
cartItemsArray.put(cartItemsObjedct);
}
dataObj.put("update_list", cartItemsArray);
JsonObjectRequest jsonArrayRequest = new JsonObjectRequest(Request.Method.PUT, url, dataObj, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
Toast.makeText(_context, response.getString("status"), Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
//mTextView.setText(error.toString());
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6Ijk5MjEyMzQ4MTMiLCJyb2xlIjoiY3VzdG9tZXIiLCJpZCI6IjU4M2VhZjI0OWM1ZDM5MTgyMzk0MTkzNyIsIm5hbWUiOiJWaWpheSBNYWxob3RyYSJ9.aF-vgNvOSSk_mbi_cTGufG2JZRrmP38zPFGn9UK9iMA");
headers.put("Content-Type", "application/json");
return headers;
}
};
requestQueue.add(jsonArrayRequest);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
notifyDataSetChanged();
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
class ViewHolder {
EditText txtListChild;
public ViewHolder(View v) {
txtListChild = (EditText) v.findViewById(R.id.lblListItem);
}
}
public HashMap<String,List<String>> gethashmap() {
return _listDataChild;
}
}
在这里，在这个适配器中，我使用了从活动调用的 gethashmap() 方法，因此它加载了新数据，但不知道如何执行此操作。
【问题讨论】：
标签： android android-edittext expandablelistview