android

问题 I am building an app with Kotlin frontend/Python backend. My python script creates a .png file under getFilesDir() directory (/data/user/0/com.example.myproject/files/mygraph.png). I then want to use kotlin to fetch the .png file and display it on imageview. Believe I have to use Bitmap but am

问题 Cross-posted from /r/dartlang on Reddit : I saw the Flutter/Dart Google IO presentation and decided I wanted to make a stupid silly Android app. It was pretty easy to get started, but I couldn't find anywhere on how to do a simple lock-screen widget. Basically I just want an app that periodically

问题 I'm getting a UNIX timestamp from DarkSkyApi for the sunrise & sunset times for the selected location and i want to convert it to a DateTime format and display it to the user. I want the time values to be local. Example case : The user is in Italy and selects "Tokyo, JP" as the desired location

问题 I'm getting a UNIX timestamp from DarkSkyApi for the sunrise & sunset times for the selected location and i want to convert it to a DateTime format and display it to the user. I want the time values to be local. Example case : The user is in Italy and selects "Tokyo, JP" as the desired location

问题 I was having some problem when trying to upload image from React Native to AWS Server. Here is my code: async function uploadImageAsync(uri) { console.log(uri); let apiUrl = '...' let uriParts = uri.split('.'); let fileType = uri[uri.length - 1]; let formData = new FormData(); formData.append(

问题 i'm trying to run an Android App on a simulator with Android V4.1.1, the app is working ok in Android version > 5, but when i try to run the app on Android V4.X the terminal is giving me the next error: Running adb -s xxx.xxx.xx.xxx:5555 reverse tcp:8081 tcp:8081 error: closed Could not run adb

问题 I used alarm manager to do a work after a certain minute. But i need to find the remaining time whenever I open that activity.How to do that? Intent myIntent = new Intent(Activity1.this, Activity2.class); pendingIntent = PendingIntent.getService(Timeractivity.this, 0, myIntent, 0); int time =

问题 I used alarm manager to do a work after a certain minute. But i need to find the remaining time whenever I open that activity.How to do that? Intent myIntent = new Intent(Activity1.this, Activity2.class); pendingIntent = PendingIntent.getService(Timeractivity.this, 0, myIntent, 0); int time =

问题 I'm beginner in xamarin's projects. So please be patient with me. Ι want to check if textview is null or empty.I'm using this code but it doesnt work. TextView textview2 = FindViewById<TextView>(Resource.Id.textView2); TextView textview1 = FindViewById<TextView>(Resource.Id.textView1); if

问题 I'm beginner in xamarin's projects. So please be patient with me. Ι want to check if textview is null or empty.I'm using this code but it doesnt work. TextView textview2 = FindViewById<TextView>(Resource.Id.textView2); TextView textview1 = FindViewById<TextView>(Resource.Id.textView1); if