In my project I am getting the employee id values and employee names from the database. I am displaying the names of employees in listview. When I click on the name(here the name textview is a hyperlink) in the listview all the details of that particular employee will be displayed. Based on the employee id when we click on the name that employee details should display. Please help me how to do this in android.
For ex: In general we give like this ----http://sample.com?id=1
How to do that in android?
So based on your question and follow-up comment, what you're gonna want to do is as follows:
Grab the employee name and id as you have already done.
Make an Object that will hold both the employee name and id. Make a toString() method that will return the employee name as a String. The reason for this is because when the ListView is inflated, it defaults to calling the toString() method of its objects (each list entry). Make sure to also have a way to get the employee id from the Object via either a public getter or making the id a public variable itself.
Make the ListView's ArrayList use this Object and set it accordingly.
Then you must use onItemClick to query the site you were referencing in your question. However, when you do query this site, make sure to concatenate the employee id to the end of the URL. Do what you will once you query the site.
Related
I am fetching a list of dogs from an endpoint. Some of the attributes of the dog, color for example, are identified by id. The id's and colors corresponding to the id were all saved in a database when the app is opened. I am using MVVM architecture and assume that the model is consuming the response data correctly.
In the main screen of the app, I have a recyclerView that will populate with a list of dogs. when I fetch the list of dogs, I am returned the id of the dog's color as part of the dog object. The user isn't going want to see the id of the color, but the actual string value of the color corresponding to that id. I need to query the database with that id to get back the string value of the color to display to the UI.
My question is how would I go about doing this? The recyclerView adapter would be where the UI is updated, and I would need the position of the dog to know what color Id I am fetching, but I can't run that query from the adapter as it would lock up the main thread. I thought to create a function in the view model that would update that particular list item, but I think I would still need the position from the adapter. I'm not really sure how to proceed...
I hope my question isn't too confusing, I had a hard time figuring out how to ask! Thanks for your time!
You want to build proper query in your DAO and "join" values from another table, depending on color_id.
You are not allowed to do any queries at adapter level. Data passed to adapter must contain everything you need.
Joins and mappings are described here: https://developer.android.com/training/data-storage/room/accessing-data
I want to check if item has particular column in database. I'm using Parse Dashboard and value in this column is type String and there is not empty string but (undefined). And this is returning null value. So I want to check if actual column does exist.
So I've used ParseObject.containsKey("column_name"), but this is returning false. I know, that value in this column is empty/null, but I want to check not value, but if that column actually exist before I can put something there.
According to documentation, this function should do exactly what I want, but it obviously doesnt work.
I've checked objectId of this item and I've checked this item in database and object with this exact id is in Class table which contains column with exact name.
Documentation:
https://parseplatform.org/Parse-SDK-dotNET/api/html/M_Parse_ParseObject_ContainsKey.htm
The containsKey method on a ParseObject will tell you only if a value has been set for that instance, not if the class can accept that property. What you want to do is inspect the Schema.
Operations on the schema (including reading) require the master key, so it is not appropriate for a client SDK like Android to access the schema directly.
I don't know your use case, as it seems unlikely that your clients would need to know this, but if you wanted a client to know the answer, you'd have to set up a cloud function that could use the master key to inspect the schema.
this is my firebase database details:
Everywhere I have found, they get all details to list view. But here I want to get all details using single value. For example: I want to get user's city, address, and dob based on their first name and print it in plain text. So not all person details at once, only for a single person.
If you want to get the single value then, you should use the row key like this,
val query = FirebaseDatabase.getInstance().reference?.child("Users")?.child("{that row key}")
Or if you want to get the first item in that list you can use limitToFirst api like this,
val query = FirebaseDatabase.getInstance().reference?.child("Users")?.limitToFirst(1)
I know how to retrieve, edit, or delet a contact from native contact list in android. I have certain task for each contact. I want when i click on the contact I want to know what is the task assigned to the object. Is there any way to assign any object to any contact. like we do setTag() and get Tag() for buttons or ImageView.
I didnt find any way to assign the object to the contact.
Thanks
You can't assign a plain object to a Contact but you can set custom data fields. This is done by creating a new Mime Type. Check out this answer for the specifics: How to add custom data/field in contacts in android 2.0?
Once you've created you're custom Mime Type, you can add and retrieve data associated with this type for any of your contacts.
And you can store any data in own database and use the LOOKUP KEY as foreign key to contacts database.
I am working on android project. By considering a list view I am displaying the student name from remote MSSQL Database. I have considered the student name text-view as hyperlink. When I click on the student name it has to display the details of that particular student from database.Based on the student id I want to display.
Now my question is how to pass the id value from database to query string in android?
Please provide us some solution regarding this? I will be thankful to you.