Android: change code generation order

See also questions close to this topic

• RecyclerView smoothScrollToPosition(0) dont work correctly

  I have a RecyclerView in a fragment. When I call smoothScrollToPosition(0) and my first cell height is larger than the phone height, the RecyclerView sometimes:

  • show the top of the first cell in the phone view
  • show the bottom of the first cell (that means it's not the top of RecyclerView

  How can I solve this problem? I want to show the top of the first cell.

  This is my RecyclerView in a fragment:

  <?xml version="1.0" encoding="utf-8"?>
      <android.support.v7.widget.RecyclerView
          xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/feed_recycler_view"
          android:background="@color/colorLightGray"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
  />
  

  And this is the code for scrolling to top cell

  RecyclerView feedRecycler = (RecyclerView)myView.findViewById(R.id.feed_recycler_view);
  feedRecycler.smoothScrollToPosition(0);
  

  When I call smoothScrollToPosition(0), if the top of the first cell is on the screen, it goes to the bottom of the first cell otherwise it goes to the bottom of the first cell!! It happens when the cell is larger than the screen.
  When I use below code it's worked fine.

  feedRecycler.scrollToPosition(0);
  
• Logging out on one android flavor logs out the other flavor too on same device

  I have built two different flavors of the same app, while running on the same device If I logout from one app it logs out the other app as well. In my app Logout is a network call so when I click one logout button I can see network calls for both the apps. I am using Retrofit to make network calls. Once logout is clicked I am pushing Logout event on eventbus and MainLandingActivity is subscribed to that.

  @Override
  public void onClick(DialogInterface dialogInterface, int i) {
                                   showSimpleProgressDialog(context);
      EventBus eventBus = EventBus.getDefault();
      LogoutEvent logoutEvent = new LogoutEvent(false, context);
      eventBus.post(logoutEvent);
  }
  

  Here is the Subscription code

  @Subscribe
  public void onLogout(LogoutEvent logoutEvent) {
      try {
          if (NetworkReceiver.isConnected) {
                  Intent intent = new Intent(this, UploadDataService.class);
                  intent.putExtra(Const.SERVICE_KEY, Const.MAIN_LANDING_LOGOUT);
                  startService(intent);
              } else {
                  RUtils.removeSimpleProgressDialog();
                  RUtils.showSnackbar(rvMainLanding, getString(R.string.logout_no_internet_error), Snackbar.LENGTH_LONG);
              }
  
      } catch (Exception e) {
          e.printStackTrace();
          Crashlytics.logException(e);
          RUtils.removeSimpleProgressDialog();
          RUtils.showSnackbar(rvMainLanding, getString(R.string.logout_failed_error), Snackbar.LENGTH_LONG);
      }
  }
  
• Implement smooth Accordion

  I need to implement Accordion in my application. The main constraints are there and some contents on the top (other than parent list of items) which need to scroll along with this Accordion expanded view.

  I have tried using recyclerview as said in first solution: RecyclerView expand/collapse items

  However my expanded list has two level of recyclerviews inside it. Since using recycler view inside recycler view is not advicable. I have used a linear layout and inflated my view and added them dynamically which will be shown or hide based on user click on parent items using following logic:

  parentView.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  int previousExpandedPosition = mExpandedPosition;
                  if (previousExpandedPosition != -1) {
                      View previouslyOpenedAccordionView = mAnalyticsList.getChildAt(previousExpandedPosition).findViewById(R.id.child_view);
                      UIUtil.collapse(previouslyOpenedAccordionView);
                      previouslyOpenedAccordionView.setVisibility(View.GONE);
                      ((ImageView) mAnalyticsList.getChildAt(previousExpandedPosition).findViewById(R.id.down_arrow)).setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_keyboard_arrow_down_black_24dp));
                  }
                  int position = (int) v.getTag();
                  mExpandedPosition = (position == mExpandedPosition) ? -1 : position;
                  if (childView.getVisibility() == View.VISIBLE) {
                      arrow.setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_keyboard_arrow_down_black_24dp));
                      UIUtil.collapse(childView);
                      childView.setVisibility(View.GONE);
                  } else if (mExpandedPosition != -1) {   //self
                      childView.setVisibility(View.VISIBLE);
                      UIUtil.expand(childView);
                      arrow.setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_keyboard_arrow_up_black_24dp));
                  }
              }
          });
  

  However this approach adds all the view initialy at once which takes time to show the parent list. Is there any other good approach to achieve accordion with neseted recyclerview?
• Binding to a method

  So I have a List of dummy programs that I use to populate a DataGrid and I have the items source setup like this :

  DG_List.ItemsSource = P.ProgramsView = new CollectionViewSource { Source = P.ProgramList() }.View;
  

  I want a way to be able to just use it as a binding in the DataGrid

  <DataGrid x:Name="DG_List" AutoGenerateColumns="False" IsReadOnly="true"
                    ColumnWidth="*" Grid.Column="3" Grid.RowSpan="3" 
                    ItemsSource="{*Binding go here*}">
  
   </DataGrid>
  

  Edit:

  I have tried using the solution marked as duplicate but it didn't work I might have did something wrong.

  The class I used:

  class Program_Binding
      {
  
          public ObservableCollection<Programs> ListProgram {get; set;}
  
  
          public void InitMyList()
          {
  
              ListProgram = new ObservableCollection<Programs>();
  
              for(int a =0; a < ListProgram.Count; a++)
              {
  
                  ListProgram.Add(InitMyObject(a));
  
              }
  
          }
  
          public Programs InitMyObject(int a)
          {
  
              double RndSize = new Random().Next(5, 99);
  
              int RndProgress = new Random().Next(10, 100);
  
              Programs P = new Programs()
              {
                  ProgramID = a,
  
                  Name = $"Program{a}",
  
                  Size = RndSize,
  
                  Progress = RndProgress
  
              };
  
              return P;
  
          }
      }
  

  And I've set the dataContex to the new class I created above

  Program_Binding PB = new Program_Binding();
  
     public MainWindow()
      {
  
          InitializeComponent();
  
          DataContext = PB;
  
      }
  

  If anything missing I will be glad to add.
• Android how to databind to parent class fields

  I have a class

   abstract class A extends BaseObservable{
   private String x;
   @Bindable
   public String getX(){
    return x;
  }
  public void setX(String val)
   {
      x=val;
      notifychange();
   }
  }
  
  public class B extends A{
   private int y;
   ....
  }
  

  Now in Layout file

  .... Now I want to bind a text view to x which is in base class.

  Tried casting it (A)(myvar).x

  but IDE is giving error.

  Pl let me know how can I do it without overriding the base class fields in child class as I have many child classes derived from base.
• Can't Bind Property in Angular 4

  Why is there a problem in binding a property on the same component? I already added Input() but still doesn't work. Do i need to put Input() even though it is on the same component when binding?

  //output.component.ts
  import { Component, OnInit} from '@angular/core';
  import { DataService } from '../data.service';
  @Component({
    selector: 'app-output',
    templateUrl: './output.component.html',
    styleUrls: ['./output.component.css']
  })
  export class OutputComponent implements OnInit {
  data: {name: string};
  datas = [];
  
  constructor(private dataService: DataService) { }
  
  ngOnInit(){
     this.datas = this.dataService.datas;
  }
  }
  
  
  
  //output.component.html
  <p *ngFor="let data of datas"></p>
  <p>{{data.name}}</p>
  
  
  //data.service.ts
  export class DataService {
    datas= [];
  
    addData(name: string){
       return this.datas.push({name: name});
    } 
  }
  
• JSQMessageBubble Doesn't resize properly while using realm datasource

  Hi I am migrating one of my existing app to use Realm. My app uses JSQMessagesViewController for the chat UI. I made necessary changes in the app so that it supports Realm.

  But, currently I am stuck with one problem whenever I use realm object as datasource for the JSQMessagesViewController, the chat bubbles start to behave in a weird way. The bubbles doesn't resize according to the message's text. See the below screenshot.

  I found in one of the issue thread of JSQMessageViewController, instances where others had faced similar issue - Cells don't fill whole width. According to them if I implement messageHash() function in my realm model this should fix the issue.

  I have implemented messageHash() function as it is an required method of JSQMessageData protocol, but I am still facing this issue.

  Here's my realm model:

  class TextMessageItem: Object, JSQMessageData, Mappable {
  
      // MARK: Persisted properties
      dynamic var messageId = UUID().uuidString
      dynamic var messageText: String?
      dynamic var messageFrom = ""
      dynamic var messageDateTime = Date()
      dynamic var fromName: String?
      dynamic var avatarURL: String?
      dynamic var messageTo = ""
      dynamic var isIncoming = false
  
      // MARK: init
      convenience required init?(map: Map) {
          self.init()
      }
  
      convenience init(messageText: String?, messageFrom: String, messageDateTime: Date? = Date(), fromName: String?, avatarURL: String?, messageTo: String) {
          self.init()
          self.messageText = messageText
          self.messageFrom = messageFrom
          self.messageDateTime = messageDateTime!
          self.fromName = fromName
          self.avatarURL = avatarURL
          self.messageTo = messageTo
      }
  
      // MARK: JSQMessageData methods
      func text() -> String {
          return messageText!
      }
  
      func senderId() -> String {
          return messageFrom
      }
  
      func date() -> Date {
          return messageDateTime
      }
  
      func senderDisplayName() -> String {
          return fromName!
      }
  
      func isMediaMessage() -> Bool {
          return false
      }
  
      func messageHash() -> UInt {
          print(self.hash)
          return UInt(self.hash)
      }
  }
  

  It'd be great if I can get some pointers on how to fix this issue. Thank You.
• iOS Realm List as Set or Array equality

  I ran into a strange case where I compare a realm list converted to Set with another Set which they have the same realm object which in its turn override isEqual function. Using Set will return false! But when I convert both of them into an Array it returns true.

  Here is my code for using both Set and Array:

  func equal(lhs: Itemization, rhs: Itemization) -> Bool {
      let discountChanged = lhs.discounts.count == rhs.discounts.count && Set(lhs.discounts) == Set(rhs.discounts)
      return discountChanged // false
  }
  
  func equal(lhs: Itemization, rhs: Itemization) -> Bool {
      let discountChanged = lhs.discounts.count == rhs.discounts.count && Array(lhs.discounts) == Array(rhs.discounts)
      return discountChanged // true
  }
  

  My realm classes:

  final class Itemization: Object, Mappable {
  .....
  let discounts = List<AppliedDiscount>()
  
  override func isEqual(_ object: Any?) -> Bool {
          if self === (object as? Itemization) { return true }
          if object == nil { return false }
          if let object = object as? Itemization {
              return equal(lhs: self, rhs: object)
          } else {
              return false
          }
      }
  }
  
  final class AppliedDiscount: Object {
      dynamic var id: String = ""
  
      override func isEqual(_ object: Any?) -> Bool {
          if self === (object as? AppliedDiscount) { return true }
          if object == nil { return false }
          if let object = object as? AppliedDiscount {
              return self.id == object.id
          } else {
              return false
          }
      }
  }
  

  I am just trying to figure out what is going on.
• way to purge all but one object types (models) in a realm

  I want to realm.delete() all but one model in my realm. Is there any way to do this without listing all of them?
  Maybe a way to loop through all the types currently existing in a realm?
• Working with code generated by Simulink model

  I am trying to use a code which was generated by Simulink model (MATLAB). What I have is:
  1. Many .h files, all with definitions of structs:
  typedef struct {...}
  2. .lib files.

  There are no functions in the .h files, only typdefs. There are two "special" typedefs; one is called 'input' and the other 'output'.
  My question is this: I have no idea how to operate this code. I want to use it from c++ or c# module, but I can't find how. Any references/help will be welcomed.
• How to modify .data values inside the .text segment in Mips?

  I have a global variable in Mips declared at the .data segment

  .data
     globalVariable:  .word  10
  

  How can I access and modify its content inside the .text segment?
• How to preserve the global variables in the stack in MIPS when calling a function?

  I'm developing a compiler from a language that mixes C++ and Javascript to MIPS Assembly

  What's the best approach to preserve the global variables in the stack when calling one or more functions, including recursion?

  At the main function, global and local variables are at the stack, starting from $fp, and that part works well. However, when calling another function, the methodology I'm using saves the return address $ra and sets new $fp and $sp. That means I have no more access to old $fp addresses where my global variables were saved. How to proceed?

  The image below describes the process that I'm using. Image obtained from Prof. Sen lectures, from Berkley
• How to use Lombok with cucumber and guice

  This is the code. I am using cucumber and guice. I want to use Lombok. I am using java 8

  @ScenarioScoped
  public class VolumeCreateTestSteps {
  private final VolumeSummaryPage volumeSummaryPage;
  private final VolumeCreateTabs volumeCreateTabs;
  private final VolumeCreatePropertyTab volumeCreatePropertyTab;
  
  @Inject
  public VolumeCreateTestSteps(VolumeSummaryPage volumeSummaryPage,
                               VolumeCreateTabs volumeCreateTabs,
                               VolumeCreatePropertyTab volumeCreatePropertyTab) {
      this.volumeSummaryPage = volumeSummaryPage;
      this.volumeCreateTabs = volumeCreateTabs;
      this.volumeCreatePropertyTab = volumeCreatePropertyTab;
  }
  
• lombok in eclipse works in windows 7 when started from the command line, but not when started from the start button

  I have eclipse oxygen on windows 7. I installed lombok.

  When I start eclipse from the command line, lombok works:

  C:\Users\ervelden\eclipse\java-oxygen\eclipse>eclipse.exe
  

  But when I start eclipse from the start button, lombok does not work. Why?
• Lombok Builder and Jackson Default values

  I want to exculde some default properties from serialization. I have the following class

  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.annotation.JsonInclude.Include;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import lombok.Builder;
  
  @JsonInclude(Include.NON_DEFAULT)
  @Builder
  public class RunTime
  {
  
  @JsonProperty
  @Builder.Default
  private String mystring = "any";
  
  @JsonProperty
  @Builder.Default
  private Boolean myboolean = true;
  
  @JsonProperty
  @JsonInclude(Include.ALWAYS)
  @Builder.Default
  private Boolean always = true;
  
  }
  

  Additionally I wrote this test:

      @Test
      public void test() throws JsonProcessingException
      {
      RunTime rac = RunTime.builder().build();
      ObjectMapper mapper = new ObjectMapper();
      String json = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(rac);
  
      assertThat(json).doesNotContain("mystring");
      assertThat(json).doesNotContain("myboolean");
      assertThat(json).contains("always");
     }
  

  I only want to include the boolean always property in the json string. Unfortunately, the test is failing as every property is included. However, I noticed all this is working fine when I remove the Lombok builder and instantiate the object by myself. How can I get this working with Lombok?