How do I get the currently displayed fragment?
I am playing with fragments in Android. I know I can change a fragment by using the following code: My question is, in a Java file, how can I get the currently displayed Fragment instance?
android
admob getting an ad response. ErrorCode: 0 Failed to load ad:0
This is what google says “It could be that you have only recently created a new Ad Unit ID and requesting for live ads. It could take a few hours for ads to start getting served if that is that case. If you are receiving test ads then your implementation is fine. Just wait a … Read more
Why this line xmlns:android=”http://schemas.android.com/apk/res/android” must be the first in the layout xml file?
In XML, xmlns declares a Namespace. In fact, when you do: Instead of calling android:id, the xml will use http://schemas.android.com/apk/res/android:id to be unique. Generally this page doesn’t exist (it’s a URI, not a URL), but sometimes it is a URL that explains the used namespace. The namespace has pretty much the same uses as the package name in … Read more
Fullscreen Activity in Android?
You can do it programatically: Or you can do it via your AndroidManifest.xml file: Edit: If you are using AppCompatActivity then you need to add new theme and then use it. Thanks to https://stackoverflow.com/a/25365193/1646479
How to install Android SDK on Ubuntu?
Option 1: The location of Android SDK on Linux can be any of the following: /home/AccountName/Android/Sdk /usr/lib/android-sdk /Library/Android/sdk/ /Users/[USER]/Library/Android/sdk Option 2: Download the Android Studio. Extract downloaded .zip file.The extracted folder name will read somewhat like android-studio To keep navigation easy, move this folder to Home directory. After moving, copy the moved folder by right clicking it. This action will place … Read more
Android Color Picker
try this open source projects that might help you https://github.com/QuadFlask/colorpicker
Is it possible to use published instant apps(BuzzFeed, Wish, etc) on the emulator?
Since Brazil is not currently in a list of Android Instant Apps supported countries, this feature is turned off on the real devices, but emulators can still be used for Instant Apps development and testing. Production level applications, like BuzzFeed, can be launched through Instant Apps only in countries from this list: https://support.google.com/googleplay/android-developer/answer/7381861#production. In all other … Read more
How do I center text horizontally and vertically in a TextView?
I’m assuming you’re using XML layout. You can also use gravity center_vertical or center_horizontal according to your need. As @stealthcopter commented, in java: .setGravity(Gravity.CENTER);. And for Kotlin users, .gravity = Gravity.CENTER
E/AndroidRuntime﹕ FATAL EXCEPTION: main
You’re calling findViewById() too early when initializing an activity settings object, likely a member variable. The code you posted doesn’t show that. You can call activity functions really only in onCreate() or later. Also put the findViewById() after setContentView() so it can actually return something other than null.
Delete child from firebase [duplicate]
This question already has answers here: How to remove child nodes in firebase android? (4 answers) Closed 4 years ago. I use following code to add a child and set a value to it in FireBase. What can I do to delete the “mockChild” ?