What files/folders can I safely ignore for inclusion with git? I copied a good project, removed its gen and bin folders and tried to run the app. The Android Launch window says, “Your project contains error(s), please fix them before running your application. There is a red X on the icon to the left of … Read more
I want to make a layout that lets me scroll down using constraint layout, but I don’t know how to go about it. Should the ScrollView be the parent of the ConstraintLayout like this? <?xml version=”1.0″ encoding=”utf-8″?> <ScrollView xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” android:fillViewport=”true”> <android.support.constraint.ConstraintLayout android:id=”@+id/Constraint” android:layout_width=”match_parent” android:layout_height=”match_parent”/> Or the other way around? Maybe someone … Read more
I have a very frustrating error that I cannot explain. I created an Android application that uses Android AppCompat to make it compatible with older versions. Here is my main activity layout file: <android.support.v4.widget.DrawerLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:tools=”http://schemas.android.com/tools” android:id=”@+id/drawer_layout” android:layout_width=”match_parent” android:layout_height=”match_parent” tools:context=”.MainActivity”> <!– As the main content view, the view below consumes the entire space available using … Read more
I get the error message java.net.SocketException: socket failed: EACCES (Permission denied) when I try to apply the code below. This is the function I call and gives me this exception. public void run() { // TODO Auto-generated method stub URL myurl = null; try { myurl = new URL(“http://10.0.2.2/list.JSON”); } catch (MalformedURLException e) { // … Read more
When adding an activity to an existing Android project, I manually create a new class – is that the best / preferred way? How do others handle that? 8 Answers 8
Is there an easy way to use a custom image for a checkbox? I’m looking to duplicate the “starred” behavior of gmail. So I want to have a checkbox that, when checked, is a filled in star. And when unchecked is an empty star. Do I have to use an imageview and do my own … Read more
I’m trying to center an ImageView inside a LinearLayout horizontally and vertically, but I just can’t do it. The main reason why I’m not using a RelativeLayout for that is because I need the layout_weight (my Activity consists of four columns that should be equally divided, and also responsive to different screen widths, each column … Read more
I am getting -bash: react-native: command not found error while creating a react-native project. Below are the additional info 1. brew –version homebrew 0.9.9 2 brew info watchman watchman `enter code here`stable 4.50 /usr/local/Cellar/watchman/4.4.0 3. brew info flow stable 0.24.1 /usr/local/Cellar/flow/0.24.1 4. brew info node stable 6.1.0 /usr/local/Cellar/node/6.1.0 5. npm -version 3.8.6 6. echo $PATH … Read more
PreferenceManager getDefaultSharedPreferences is deprecated in Android 10. How do I replace it? 9 Answers 9
I can’t get the meaning of onStart() transition state. The onResume() method is always called after onStart(). Why can’t it be the onResume() is invoked after onRestart() and onCreate() methods just excluding onStart()? What is its purpose? Why can’t we live without onStart(). I still consider it as redundant (probably because don’t understand its meaning … Read more