由于某种原因，我开始得到以下错误：
android.view.WindowLeaked: Activity com.example.matant.gpsportclient.MainScreen has leaked window com.android.internal.policy
我尝试了一些解决方案，但我仍然不明白为什么会出现这个错误。
我在命令"alert.show"的行中得到了错误。这是代码：
case "success": {
Log.d("event created", "success to create event");
AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
alert.setTitle("Event");
alert.setMessage("Event was created successfully");
alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
/* Intent i = new Intent(getActivity(), MainScreen.class);
startActivity(i);
getActivity().finish();
dialog.dismiss();*/
startActivity(new Intent(getActivity(),MainScreen.class));
}
});
alert.setIconAttribute(android.R.attr.alertDialogIcon);
alert.show();
break;
}
此活动的完整代码为：
package com.example.matant.gpsportclient.Controllers;
import android.app.Activity;
import android.app.DialogFragment;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.app.Fragment;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;
import com.example.matant.gpsportclient.AsyncResponse;
import com.example.matant.gpsportclient.MainScreen;
import com.example.matant.gpsportclient.OnCompleteListener;
import com.example.matant.gpsportclient.R;
import com.example.matant.gpsportclient.Utilities.CreateInviteUsersRow;
import com.example.matant.gpsportclient.Utilities.CreateInvitedUsersAdapter;
import com.example.matant.gpsportclient.Utilities.DatePicker;
import com.example.matant.gpsportclient.Utilities.MyAdapter;
import com.example.matant.gpsportclient.Utilities.SessionManager;
import com.example.matant.gpsportclient.Utilities.TimePicker;
import com.google.android.gms.gcm.GoogleCloudMessaging;
import com.google.android.gms.maps.model.LatLng;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.List;
public class CreateEventFragmentController extends Fragment implements View.OnClickListener,OnCompleteListener,AsyncResponse {
private Button btnStartdate,btnstartTime,btnendTime,btninviteUsers,btnEndDate,btnSave;
private EditText addressEditText,maxParticipantsEdittext,minAgeEditText;
private CheckBox privateEventCbox,reccuringEventCbox;
private Spinner sportSpinner,genderSpinner;
private Calendar cal;
private String current_time,current_date;
private Boolean SET_TIME = false;
DialogFragment tp = null;
private DBcontroller dbController;
private ProgressDialog progress= null;
private int settime = 0;
private static final int REQUEST_CODE_GET_USER_LIST = 1;
private ListView listViewInvitedUsers;
private List<CreateInviteUsersRow> invitedUsers = null;
private CreateInvitedUsersAdapter invidedAdapter;
private SessionManager sm;
public CreateEventFragmentController() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View v = inflater.inflate(R.layout.fragment_create_event_fragment_controller, container, false);
//initialize the widgets
btnStartdate = (Button) v.findViewById(R.id.buttonFromDate);
btnstartTime = (Button) v.findViewById(R.id.buttonFromTime);
btnEndDate = (Button) v.findViewById(R.id.buttonEndDate);
btnendTime = (Button) v.findViewById(R.id.buttonEndTime);
btninviteUsers = (Button) v.findViewById(R.id.buttonInviteUsers);
btnSave = (Button) v.findViewById(R.id.ButtonSave);
cal = Calendar.getInstance();
btnstartTime.setText(getCorrentTime());
btnendTime.setText(getCorrentTime());
btnStartdate.setText(getCurrentDate());
btnEndDate.setText(getCurrentDate());
sm = new SessionManager(getActivity());
maxParticipantsEdittext = (EditText) v.findViewById(R.id.editTextMaxPaticipants);
minAgeEditText = (EditText) v.findViewById(R.id.editTextMinAge);
addressEditText = (EditText) v.findViewById(R.id.editTextLocation);
privateEventCbox = (CheckBox) v.findViewById(R.id.checkBoxPrivateEvent);
reccuringEventCbox = (CheckBox) v.findViewById(R.id.checkBoxRecurring);
sportSpinner = (Spinner) v.findViewById(R.id.spinnerSports);
genderSpinner = (Spinner) v.findViewById(R.id.spinnerGender);
//gender spinner
genderSpinner.setAdapter(new MyAdapter(getActivity(), R.layout.custom_spinner, getResources().getStringArray(R.array.eventgender)));
genderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
;
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});//gender spinner
//Sport Spinner
sportSpinner.setAdapter(new MyAdapter(getActivity(), R.layout.custom_spinner, getResources().getStringArray(R.array.kind_of_sport)));
sportSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});//Sport Spinner
btninviteUsers.setVisibility(v.GONE);
//private event check box listener
privateEventCbox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (privateEventCbox.isChecked())
btninviteUsers.setVisibility(v.VISIBLE);
else
btninviteUsers.setVisibility(v.GONE);
}
});//private event check box listener
btnstartTime.setOnClickListener(this);
btnendTime.setOnClickListener(this);
btnStartdate.setOnClickListener(this);
btnEndDate.setOnClickListener(this);
btnSave.setOnClickListener(this);
btninviteUsers.setOnClickListener(this);
listViewInvitedUsers = (ListView) v.findViewById(R.id.listViewInvitedusers);
listViewInvitedUsers.setItemsCanFocus(true);
return v;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
@Override
public void onDetach() {
super.onDetach();
}
@Override
public void onClick(View v) {
DialogFragment df = null;
Bundle bundle = null;
String dialog_type ="";
switch(v.getId()) {
case R.id.buttonFromTime:
{
{
bundle = new Bundle();
dialog_type = "Time";
bundle.putInt(dialog_type, 1);
SET_TIME =true;
}
}
break;
case R.id.buttonEndTime:
{
{
bundle = new Bundle();
dialog_type = "Time";
bundle.putInt(dialog_type, 2);
SET_TIME =true;
}
break;
}
case R.id.buttonFromDate:
{
{
bundle = new Bundle();
dialog_type = "Date";
bundle.putInt(dialog_type, 1);
df = new DatePicker();
}
break;
}
case R.id.ButtonSave:
if(validateFields())
sendDataToDBController();
break;
case R.id.buttonInviteUsers: {
Intent i = new Intent(getActivity(),InviteUsersActivity.class);
startActivityForResult(i,REQUEST_CODE_GET_USER_LIST);
break;
}
}
if(df!=null && bundle!=null)
{
df.setArguments(bundle);
df.setTargetFragment(this,0);
df.show(getFragmentManager(),dialog_type);
}
if(SET_TIME)
{
SET_TIME = false;
if(tp == null)
tp = new TimePicker();
tp.setArguments(bundle);
tp.setTargetFragment(this,0);
tp.show(getFragmentManager(),dialog_type);
}
}
@Override
public void onComplete(String flag,String res) {
settime = 0;
switch(flag) {
case "start_time": {
btnstartTime.setText(res);
if (settime == 0)
btnendTime.setText(res);
settime = 0;
break;
}
case "end_time": {
btnendTime.setText(res);
settime = 1;
break;
}
case "date":
btnStartdate.setText(res);
btnEndDate.setText(res);
break;
case "incorrect_time": {
new AlertDialog.Builder(getActivity())
.setTitle("Select Time Error")
.setMessage(res)
.setNeutralButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
btnstartTime.setText(getCorrentTime());
btnendTime.setText(getCorrentTime());
}
})
.setIconAttribute(android.R.attr.alertDialogIcon)
.show();
}
}
}
/**
* return the current time as string
* @return -current time
*/
public String getCorrentTime()
{
String min = "";
if(cal.get(Calendar.MINUTE)<10)
min = "0"+String.valueOf(cal.get(Calendar.MINUTE));
else
min = String.valueOf(cal.get(Calendar.MINUTE));
current_time = cal.get(Calendar.HOUR_OF_DAY)+":"+min;
return current_time;
}
/**
* return the current date
* @return current date
*/
public String getCurrentDate()
{
current_date = cal.get(Calendar.DAY_OF_MONTH)+"/"+(cal.get(Calendar.MONTH)+1)+"/"+cal.get(Calendar.YEAR);
return current_date;
}
/**
* this function convert real address to geographical coordinates.
* @param strAddress -real address
* @return LatLng object which contain the coordinates
*/
public LatLng getLocationFromAddress(String strAddress) {
Geocoder coder = new Geocoder(getActivity());
List<Address> address;
LatLng p1 = null;
try {
address = coder.getFromLocationName(strAddress, 5);
if (address == null) {
return null;
}
Address location = address.get(0);
location.getLatitude();
location.getLongitude();
p1 = new LatLng(location.getLatitude(), location.getLongitude() );
Log.d("coordinates",p1.latitude+""+p1.longitude);
} catch (Exception ex) {
Log.d("Location Exception","error converting address");
ex.printStackTrace();
}
return p1;
}
@Override
public void handleResponse(String resStr) {
progress.dismiss();
Log.d("handleResponse", resStr);
if (resStr != null) {
try {
JSONObject jsonObj = new JSONObject(resStr);
String flg = jsonObj.getString("flag");
switch (flg)
{
case "success": {
Log.d("event created", "success to create event");
AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
alert.setTitle("Event");
alert.setMessage("Event was created successfully");
alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
/* Intent i = new Intent(getActivity(), MainScreen.class);
startActivity(i);
getActivity().finish();
dialog.dismiss();*/
startActivity(new Intent(getActivity(),MainScreen.class));
}
});
alert.setIconAttribute(android.R.attr.alertDialogIcon);
alert.show();
break;
}
case "failed":
{
Log.d("Created failed","failed to create event");
new AlertDialog.Builder(getActivity())
.setTitle("Create event failed!")
.setMessage(jsonObj.getString("msg"))
.setNeutralButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
btnstartTime.setText(getCorrentTime());
btnendTime.setText(getCorrentTime());
}
})
.setIconAttribute(android.R.attr.alertDialogIcon)
.show();
break;
}
case "select failed":
Log.d("select query","failed to find events");
}
}catch (JSONException e){
Log.d("json exception",e.getMessage());
}
}
}
/**
* send request to server
*/
@Override
public void sendDataToDBController() {
LatLng lonlat = getLocationFromAddress(addressEditText.getText().toString());
if(lonlat == null)
{
Log.d("location is:","location not found");
addressEditText.setError("Location was not found!");
//return;
}
Log.d("found location",lonlat.latitude+""+lonlat.longitude);
BasicNameValuePair tagreq = new BasicNameValuePair("tag","create_event");
BasicNameValuePair sport = new BasicNameValuePair("sport_type",sportSpinner.getSelectedItem().toString());
Log.d("sport_type",sportSpinner.getSelectedItem().toString());
BasicNameValuePair date = new BasicNameValuePair("date",btnStartdate.getText().toString());
BasicNameValuePair startTime = new BasicNameValuePair("s_time",btnstartTime.getText().toString());
BasicNameValuePair endTime = new BasicNameValuePair("e_time",btnendTime.getText().toString());
BasicNameValuePair longtitude = new BasicNameValuePair("lon",String.valueOf(lonlat.longitude));
BasicNameValuePair latitude = new BasicNameValuePair("lat",String.valueOf(lonlat.latitude));
BasicNameValuePair event_type = new BasicNameValuePair("event_type",String.valueOf(privateEventCbox.isChecked()));
BasicNameValuePair gender = new BasicNameValuePair("gender",String.valueOf(genderSpinner.getSelectedItem().toString()));
BasicNameValuePair min_age = new BasicNameValuePair("minAge",String.valueOf(minAgeEditText.getText()));
BasicNameValuePair participants = new BasicNameValuePair("max_participants",maxParticipantsEdittext.getText().toString());
BasicNameValuePair scheduled = new BasicNameValuePair("scheduled",String.valueOf(reccuringEventCbox.isChecked()));
BasicNameValuePair mob_manager = new BasicNameValuePair("manager",sm.getUserDetails().get(sm.KEY_USERID));
List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
if(invitedUsers != null)
{
if(invitedUsers.size() > 0)
{
String[] users = new String[invitedUsers.size()];
JSONArray invited = new JSONArray();
for(int i=0 ; i < invitedUsers.size(); i++)
{
users[i]= invitedUsers.get(i).getMobile();
invited.put(users[i]);
}
String json = invited.toString();
Log.d("string array", Arrays.toString(users));
BasicNameValuePair invitedusers = new BasicNameValuePair("invitedUsers",Arrays.toString(users));
BasicNameValuePair jsonInvited = new BasicNameValuePair("jsoninvited",json);
nameValuePairList.add(invitedusers);
nameValuePairList.add(jsonInvited);
}
}
nameValuePairList.add(mob_manager);
nameValuePairList.add(tagreq);
nameValuePairList.add(sport);
nameValuePairList.add(date);
nameValuePairList.add(startTime);
nameValuePairList.add(endTime);
nameValuePairList.add(min_age);
nameValuePairList.add(longtitude);
nameValuePairList.add(latitude);
nameValuePairList.add(event_type);
nameValuePairList.add(participants);
nameValuePairList.add(scheduled);
nameValuePairList.add(gender);
dbController = new DBcontroller(getActivity().getApplicationContext(),this);
dbController.execute(nameValuePairList);
}
@Override
public void preProcess() {
this.progress = ProgressDialog.show(getActivity(), "Create Event",
"Building Event...", true);
}
/**
* check the input of the user.
* @return
*/
public boolean validateFields()
{
Boolean valid = true;
if(addressEditText.getText().toString().equals(""))
{
addressEditText.setError("Location field cannot be empty!");
Log.d("max edittext", "max edit text is empty");
valid = false;
}
if(maxParticipantsEdittext.getText().toString().equals(""))
{
maxParticipantsEdittext.setError("Please insert the max Participants in the event");
valid = false;
} if(minAgeEditText.getText().toString().equals("") == true || Integer.valueOf(minAgeEditText.getText().toString()) < 14)
{
minAgeEditText.setError("Minimal age should be at least 14!");
Log.d("min edittext", "min edit text is empty");
valid = false;
} if(btnendTime.getText().toString().equals(btnstartTime.getText().toString()))
{
onComplete("incorrect_time", "Please Provide end time of the event ");
Log.d("equal time", "time is equal");
valid = false;
}
return valid;
}
/**
* connect with the InviteUserActivity and getting the result from her.
* @param requestCode
* @param resultCode
* @param data
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.d("inside OnActivityResult","result");
if(REQUEST_CODE_GET_USER_LIST == requestCode){
if(Activity.RESULT_OK == resultCode){
JSONArray res = null;
try {
res = new JSONArray(data.getStringExtra("userList"));
invitedUsers = new ArrayList<CreateInviteUsersRow>();
for(int i=0 ;i< res.length(); i++){
String name = res.getJSONObject(i).getString("name");
String mobile = res.getJSONObject(i).getString("mobile");
CreateInviteUsersRow invitedUserRow = new CreateInviteUsersRow(name,mobile,R.drawable.remove_user_50);
invitedUsers.add(invitedUserRow);
}
invidedAdapter = new CreateInvitedUsersAdapter(getActivity(),R.layout.create_users_invited_item,invitedUsers);
listViewInvitedUsers.setAdapter(invidedAdapter);
invidedAdapter.setAdapterListview(listViewInvitedUsers);
invidedAdapter.setListViewHeightBasedOnChildren();
listViewInvitedUsers = invidedAdapter.getAdapterListview();
} catch (JSONException e) {
e.printStackTrace();
}
Log.d("Users are:",res.toString());
}
if(resultCode == Activity.RESULT_CANCELED){
Log.d("Acttivity canceled","canceled");
}
}
}
}
我发现活动在关闭对话框之前就关闭了，所以我添加了以下功能：
public void onStop(){
super.onStop();
if(alert != null){
alertdialog.dismiss();
}
}