android-context Questions
2
Solved
My users can select files via ACTION_OPEN_DOCUMENT
val launcher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.OpenDocument(),
onResult = onResult
)
After which I use ta...
Triphibious asked 24/10, 2021 at 16:47
2
I have a class that creates (or opens) a file to write some data to it. This class receives a Context in the constructor, saves it in an instance field, and then uses it to call the context.openFil...
Burrill asked 28/3, 2014 at 13:45
21
Solved
I am trying to implement MVVM pattern in my android app. I have read that ViewModels should contain no android specific code (to make testing easier), however I need to use context for various thin...
Beutler asked 21/7, 2018 at 0:29
3
Solved
Android 13 (SDK 33): PackageManager.getPackageInfo(String, int) deprecated. what is the alternative?
Starting from API level 33 the getPackageInfo(String, int) method of PackageManager class is deprecated. Documentation suggests to use getPackageInfo(String, PackageInfoFlags) instead. But that fun...
Fictitious asked 17/8, 2022 at 11:55
3
I'm developing an app with React Native for both iOS and Android, and I am trying to prevent device-specific scaling of the display in the app.
For text/font size scaling, putting the following co...
Chiarra asked 26/6, 2019 at 18:42
8
Solved
I have an activity which creates an object instance of my class:
file MyActivity.java:
public class MyActivity extends Activity {
TextView myView = (TextView)findViewById(R.id.myView);
...
Poin...
Ula asked 17/5, 2011 at 12:47
18
Solved
I've found the R.string pretty awesome for keeping hardcoded strings out of my code, and I'd like to keep using it in a utility class that works with models in my application to generate output. Fo...
Arbuthnot asked 23/11, 2010 at 6:23
1
companion object {
@Volatile
private lateinit var instance: ExampleDatabase
fun getInstance(context: Context): ExampleDatabase {
synchronized(this) {
if(!::instance.isInitialized) {
instance...
Fullblooded asked 11/3, 2020 at 8:20
16
Solved
I am aware of the availability of Context.getApplicationContext() and View.getContext(), through which I can actually call Context.getPackageName() to retrieve the package name of an application.
...
Zephan asked 5/7, 2011 at 23:0
5
Solved
Getting the context inside onClick(View view), the callback for a button's onClickListener(), is easy:
view.getContext()
But I can't figure out how to get the context inside onClick(DialogInterf...
Flagitious asked 27/3, 2011 at 3:53
4
Solved
I'm using Context to access system level services like WifiManager and BluetoothManager. How to mock this getApplicationContext() using Mockito?
Larva asked 3/12, 2015 at 10:43
32
Solved
In Android programming, what exactly is a Context class and what is it used for?
I read about it on the developer site, but I am unable to understand it clearly.
Linsk asked 26/8, 2010 at 6:12
7
Solved
I am trying ProgressDialog. But I am confused.
1. pd=ProgressDialog.show(MainActivity.this, "", "Fething data");
when I do use (MainActivity.this) then it is ok. But
2. pd=Prog...
Monck asked 9/4, 2014 at 15:3
3
Solved
Is it possible to pass arguments to an Android Handler?? I have two pieces of code.
new Thread(){
public void run(){
for(;;){
uiCallback.sendEmptyMessage(0);
Thread.sleep(2000); //sleep for 2 ...
Neubauer asked 28/3, 2011 at 17:13
28
Solved
I have implemented a ListView in my Android application. I bind to this ListView using a custom subclass of the ArrayAdapter class. Inside the overridden ArrayAdapter.getView(...) method, I assign ...
Tina asked 12/10, 2010 at 20:0
4
I took inspiration from google's sample on how to test your SharedPreferences code here by creating a SharedPreferencesHelper class:
https://github.com/googlesamples/android-https://github.com/goo...
Petrography asked 10/7, 2016 at 20:40
12
Solved
Starting with a recent new version of ADT, I've noticed this new attribute on the layout XML files, for example:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:...
Phyllys asked 18/6, 2012 at 7:25
7
Solved
I allways get this java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
error while ...
Nash asked 24/6, 2016 at 13:30
3
Solved
Is there an Intent that goes directly to the "Enable USB Debugging" toggle or a way to request it to be enabled?
---Situation Explanation---
We have an application we use for testing on many phon...
Semaphore asked 2/5, 2019 at 23:20
6
Solved
I have a Listview with a ContextMenu, but when I setIcon for ContextMenu look like it doesn't work
public void onCreateContextMenu(ContextMenu menu , View v,
ContextMenuInfo menuInfo){
super.o...
Alanson asked 7/8, 2009 at 15:49
10
Solved
In an Android app, is there anything wrong with the following approach:
public class MyApp extends android.app.Application {
private static MyApp instance;
public MyApp() {
instance = this;
...
Cutout asked 12/6, 2009 at 14:54
9
Solved
I don't really get the idea behind how this whole thing works really, so if I have some class A that need the context of a class B which extends Activity, how do i get that context?
I'm searching ...
Foreland asked 7/9, 2012 at 15:12
1
Solved
Run into strange behaviour when trying to add support for dark theme in existing app.
I added values-night folder where I added new colors.xml with different hex for dark mode. Then I extended from...
Jobber asked 16/9, 2022 at 9:58
7
I have several classes in my application. Some are Activities, Services and Pure java classes. I know i can display a Toast message within an Activity, but I'd like to display a Toast from a pure j...
Industrialism asked 23/12, 2013 at 11:17
4
Solved
In my application i want show message when fragment has show.
I used viewPager and BottomNavBar for show 4 fragments!
I want when click on BottomNavBar items show fragment and i want when visibilit...
Northrop asked 28/3, 2019 at 16:4
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