I have a Firestore collection tree in which I plan to store only one document. I want to check if that collection contains that document and if so, retrieve the id of the document! Any ideas/thoughts? Thanks 🙂 Answer If you want to check a particular document for existence based on its document id, please use…
Tag: android
Wrong values from string empty test (java x kotlin)
I’m having a super weird behavior from a code that I was testing. The test I wrote was to see the behavior of the class if the Android returned an empty package name. After some debugging, I found this (consider that packageName is empty): Is this expected? Can someone tell what the deal with this? ps1.…
Javadoc error: “option –boot-class-path not allowed with target 11”
I have written a fully functional Android app in Intellij, using JDK 11 and Android SDK 28. But I am unable to run JavaDoc on my code, and I can’t figure out why or how to fix it! At first, I was getting many errors such as “android.whatever package not found”. Simple enough to fix, after go…
How to exclude an Android App from Battery Optimization using code
I am new to Android, now I am working on a Project which is based on GPS. I got source code from internet(traccar). my requirement is like the app should update location on each 1Km or each 1hr. but the problem is the app not working in background after some time(10 – 20 mins). Is there any solution for…
java.lang.NumberFormatException: For input string: “1538956627792”
I’m trying to convert the system time to int with the following code: But I’m getting the following error: Why is this number: “1538956627792” still throwing an error? Answer Number is too long to be parsed as int, You need to use Long to parse that big number,
Why don’t my data insert into SQLite database on android?
I’m creating a simple todo list. So, I have activity (NewTaskActivity) Xml code: And I have a class NewTaskActivity.java: In this class(NewTaskActivity.java) I want to add data in database. Database class (DBHelper.java): And my data don’t insert into database. Why? I checked for data in NewTaskAc…
SearchView icon shows twice
I’ve implemented SearchView inside my toolbar, following Android’s official instructions. SearchView works well itself, but when I tap the search icon, it is shifted to the left instead of showing the Search Hint and Close button, although if I click this “second Search” icon, finally …
How can I check whether data exist in Room database before inserting into database on Android?
In my application I want to use Room Database to show offline data. I wrote below code, but when clicked on button to add in data, if this data exist in the Room database it shows ForceClose error! How can I check for this data in the database, before adding to the database? My NewsOfflineDatum class : My ada…
Create Base Adapters For All Recycler View Adapters
How can i perform on click of every item selection using holder in child class extending with it. Answer
ExoPlayer switching media source without black screen
I’m using exoplayer in my project, when switching mediasource i just use This causes approx. 0.5 seconds black screen until it switches video. Is there a way to tell exoplayer to retain last frame from previous video (instead of 0.5 sec black screen) until new video is started? Answer