Timetable App Tutorial E2.1 - Completing the Week Activity! (Android Studio 3.0)

In this video, we define the adapter class for the week and then set it to the listview. The final product is colorful and the app finally takes shape!
How to upgrade to latest Android Studio 3.0 - • How to Install/Upgrade...
Previous episode E2.0 - • Timetable App Tutorial...
Other episodes:
E1.1 - • Timetable App Tutorial...
E1.0 - • TimeTable App Tutorial...
E00 - • Simple Timetable App T...
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[@anupamdungdung9417]

This guy's explanation is the best I have ever seen and heard regarding Android tutorials. Explaining each and every component very clearly. Thank you!

[@codinginflow]

Very nice work, keep it up!

[@hadeelalamoudi438]

Thank you so much.. I wish if I can give you million likes for your amazing videos.

[@kingkhan3161]

Very nice video. Plz upload the next video... Waiting for the continuation!!

[@ShreyeshSharma]

At 24:32 on set text for tv week I am getting error java null pointer exception attempt to invoke java.lang.charactersequence

[@ProfessorDK]

+Shreyesh Sharma Check the ID you have defined for tvWeek :)

[@ShreyeshSharma]

Professor DK thanks solved it was the id causing the problem

[@parkbora07]

dont we need any backend,sir?

[@bharathcool4387]

Thank you so much sir for uploading this!

[@ProfessorDK]

+bharath cool Glad you liked it :)

[@ShreyeshSharma]

when are the videos for rest of the section of the app releasing?please release all of them a bit quickly

[@Drakanx]

so i can adopted this for classes and time of each class? fro each day of the weak

[@kilungyajames5484]

Wow great work, keep it up

[@joshalforque5663]

Thank you sir i really watched all your videos .plsss sir upload next video plssss

[@ProfessorDK]

Will be uploaded this Sunday :)

[@joshalforque5663]

Were just waiting for the next video what happened 😭😭

[@josephifs6493]

+Professor DK sir you told about home automation app this week will released but till now there's no where in utube

[@francisdeh6951]

Thanks, your videos are great. Could you also consider including alarm system. Say a pop up notification some 15 minutes before time for a particular class. Per my research, it will definitely entail a lot but will really appreciate it if you could.

[@weinschelbarretto3263]

For the adapter classes (in the MainActivity.java and WeekActivity.java), how does it iterate through all the elements of the ListView to initialize them? Does it happen all at once or it does it happen one by one?

[@nahian.rifaat]

+Professor DK , i watched your video and wrote the same code for my app but the app crashes when i click the first item on my app. Please help

[@ProfessorDK]

Please post the error seen in your logcat :)

[@nahian.rifaat]

Professor DK thanks, I have resolved thhe problem. But please give me some idea of how to load results of a custom query to a listview. I need it for my proojrct which is to be submitted on july 1st

[@rohitroy9828]

@@nahian.rifaat could you please point out where you have made the changes, as I am facing the same issue?

[@ashaysingh9278]

holder.tvWeek.setText(week[position]); in the above line the error is.... java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference at com.example.anshi.timetabledemo.WeekActivity$WeekAdapter.getView(WeekActivity.java:128) pls help

[@rohitroy9828]

Sir could you please respond to this query as I have faced the same issue while building my project.

[@soumyachatterjee2603]

@@rohitroy9828 inside WeekActivity.java , He accidentally made a mistake. See At 16:24 , Replace (R.id.tvMain) with (R.id.tvWeek).

[@parkbora07]

can you upload video about developing an app using android studio for developing timetable generation in which there would be auto swapping of professors to a class with absence of professor....please,sir

[@mokshmahajan6340]

Can I use BaseAdapter in case of ArrayAdapter?

[@ProfessorDK]

Yes, u can

[@mokshmahajan6340]

Also when I'm trying to use ViewHolder the lines (containing holder.something) are not working, though they are showing no error. But when I did it without using viewholder it worked.

[@rogerye664]

hey, so when testing on my phone, the app crashes after i click on the timetable button and im not sure what to do, i followed all your steps and your offical app on the app store does not have this problem so i dont know why it is crashing

[@soniarodrigues441]

same here

[@ahmadibsibsshah5027]

@@soniarodrigues441 plz change your app's "activity_week_single_item.xml" according to the settings in this video at 16.00 - 17.00 minutes. This worked for me :)

[@soumyachatterjee2603]

@@ahmadibsibsshah5027 Thank you so much mate 🤜🤛

[@thecountrox]

@@ahmadibsibsshah5027 yes i had to change ivWeek to ivMain and it works, tysm

[@joshx2286]

When i click on the panel to open the weeks tab the app crashes any fix to that?

[@joshx2286]

java.lang.NullPointerException: Attempt to invoke virtual method 'void com.example.timetablex.utils.LetterImageView.setOval(boolean)' on a null object reference this it the error

[@anuraggupta5665]

What is difference between ArrayAdapter and BaseAdapter? In MainActivity file you used BaseAdapter but here ArrayAdapter. Why?

[@ProfessorDK]

Array adapter has slightly more functionality capabilities. No other vast difference.

[@akhileshtandle7126]

I HV a doubt sir that I HV made a simple calculator app only with one operation addition when I click button for result it's is crashing it's Hw to fix that

[@ProfessorDK]

+Akhilesh Sonu Could you tell me the error seen in logcat?

[@kilungyajames5484]

Kindly upload the next tutorials after the weekly activity, E2.2 and above

[@ProfessorDK]

Yes, keep checking every week :)

[@thehumblestudent5032]

When I click on the first list item (Time table) the application crashes and closes itself. Any ideas why?

[@thehumblestudent5032]

It has something to do with the function setupListView, but I don't know what it exactly is.

[@Tommy22898]

@@thehumblestudent5032 did you solve this?

[@thehumblestudent5032]

@@Tommy22898 he has grabbed the wrong id (findViewById). Look at the correlated xml file, you will see what I mean.

[@Tommy22898]

@@thehumblestudent5032 Which wrong ID did he use? The ID in the xml file is "ivletter" which seems to be correct in the getview function. Which function was is that was causing the error as im getting no errors and the apps just closing.

[@SouravKumar951]

replace holder.tvWeek = (TextView)convertView.findViewById(R.id.tvMain); to holder.tvWeek = (TextView)convertView.findViewById(R.id.tvWeek);

[@androidtube254]

waiting for the next video. Please release all of them sir

[@ProfessorDK]

Will be released this Sunday! :)

[@Tommy22898]

the noise at 22:00 scared the shit out of me

[@ProfessorDK]

Haha, sorry about that 🤣

[@snehithavemireddy7514]

sir,i am geting that i cannot resolve symbol andriod

[@snehithavemireddy7514]

sir, i got error free but i am unable to build apk debug it is not working ?

[@Pankajsharma-zh6ov]

Hello brother good work.. Help me with the code for connecting this activities

[@ProfessorDK]

+Pankaj sharma You connect them by using Intents. I hope that's what u asked

[@carpilami]

public class WeekAdapter extends ArrayAdapter { @Override public int getCount() { return weekarray.length; } } //i added this in weekadapter

[@maximilianocarsi2895]

I hope and soon upload a new video

[@mehrajud-dinbhat8048]

Sir ..we are impatiently waiting for the videos of the tutorial..please sir upload all the videos of the app

[@ProfessorDK]

+Mehraj Bhat Yes will be uploaded coming Sunday! :)

[@bhargavibaljoshi7249]

Plss upload next video sir

[@ProfessorDK]

It is available now on my channel, do check it out :)

[@harishankarkannan9198]

hey....pls. provide a video on sqlite filter search.

[@ProfessorDK]

+Hari Shankar You want a search implemented in the main activity right?

[@harishankarkannan9198]

Professor DK no..what I actually meant is that make a separate video on the SQLite database and make a list view out of it. In which teach us how to implement search

[@vishalborana9020]

Sir, please upload the future videos quickly.

[@francisdeh6951]

Thanks, your videos are great. Could you also consider including alarm system. Say a pop up notification some 15 minutes before time for a particular class. Per my research, it will definitely entail a lot but will really appreciate it if you could.

[@ProfessorDK]

+Deh Francis Once the entire tutorial is complete I'll cover add ons in which I'll cover the alarm pop-up :)

[@francisdeh6951]

Professor DK thank you very much.