Tutorial by Examples: n

Why an Editor Window? As you may have seen, you can do a lot of things in a custom inspector (if you don't know what a custom inspector is, check the example here : http://www.riptutorial.com/unity3d/topic/2506/extending-the-editor. But at one point you may want to implement a configuration panel, ...

import std.stdio; bool isPrime(int number) { foreach(i; 2..number) { if (number % i == 0) { return false; } } return true; } void main() { writeln(2.isPrime); writeln(3.isPrime); writeln(4.isPrime); 5.isPrime.writeln; } ...

On calling, an application chooser dialog will appear and by selecting an application you can share your content with it. For calling use this line of code in your program class: share(context, "This is a test message", "Test Subject") Function's definition: public static v...

Notice, that in order to change file prmissions, your device need to be rooted, su binary doesn't come with factory shipped devices! Convention: adb shell su -c "chmod <numeric-permisson> <file>" Numeric permission constructed from user, group and world sections. For exa...

Dim openListType = GetType(List(Of )) Dim typeParameters = {GetType(String)} Dim stringListType = openListType.MakeGenericType(typeParameters) Dim instance = DirectCast(Activator.CreateInstance(stringListType), List(Of String)) instance.Add("Hello")

It is possible to easily catch the exception without any try catch block. public class ListTest { private final List<Object> list = new ArrayList<>(); @Test(expected = IndexOutOfBoundsException.class) public void testIndexOutOfBoundsException() { list.get(0); } } ...

var a = new List<int>(); var b = a; a.Add(5); Console.WriteLine(a.Count); // prints 1 Console.WriteLine(b.Count); // prints 1 as well Assigning to a variable of a List<int> does not create a copy of the List<int>. Instead, it copies the reference to the List<int>. We ...

Here is a tested code for image and video.It will work for all APIs less than 19 and greater than 19 as well. Image: if (Build.VERSION.SDK_INT <= 19) { Intent i = new Intent(); i.setType("image/*"); i.setAction...

Headings can be used to describe the topic they precede and they are defined with the <h1> to <h6> tags. Headings support all the global attributes. <h1> defines the most important heading. <h6> defines the least important heading. Defining a heading: <h1>Headin...

Once you have setup the Retrofit environment in your project, you can use the following example that demonstrates how to upload multiple files using Retrofit: private void mulipleFileUploadFile(Uri[] fileUri) { OkHttpClient okHttpClient = new OkHttpClient(); OkHttpClient clientWith30sTime...

The Java Native Interface (JNI) allows you to call native functions from Java code, and vice versa. This example shows how to load and call a native function via JNI, it does not go into accessing Java methods and fields from native code using JNI functions. Suppose you have a native library named ...

You can add a "Browse Our Other Apps" button in your app, listing all your(publisher) applications in the Google Play Store app. String urlApp = "market://search?q=pub:Google+Inc."; String urlWeb = "http://play.google.com/store/search?q=pub:Google+Inc."; try { I...

The internet is packed with tips for performance improvement of Java programs. Perhaps the number one tip is awareness. That means: Identify possible performance problems and bottlenecks. Use analyzing and testing tools. Know good practices and bad practices. The first point should be done d...

In Java, it's too "easy" to create many String instances which are not needed. That and other reasons might cause your program to have lots of Strings that the GC is busy cleaning up. Some ways you might be creating String instances: myString += "foo"; Or worse, in a loop or...

1. What is MVC? The Model View Controller (MVC) Pattern is a design pattern most commonly used for creating user interfaces. The major advantage of MVC is that it separates: the internal representation of the application state (the Model), how the information is presented to the user (the View...

Here's the utility class: public class SharedPreferencesCompat { public static void putStringSet(SharedPreferences.Editor editor, String key, Set<String> values) { if (Build.VERSION.SDK_INT >= 11) { while (true) { try { ...

put this code inside your ViewHolder note: In this code I am using btnExpand click-event, for whole recyclerview click event you can set listener to itemView object. public class MyViewHolder extends RecyclerView.ViewHolder{ CardView cv; TextView recordName, visibleFile, date, t...

If you just want to get data, but not modify anything, you can turn off change tracking and proxy creation. This will improve your performance and also prevent lazy loading. Bad Example: using(var context = new Context()) { return await context.Set<MyEntity>().ToListAsync().ConfigureAw...

The Preview pane displays default values for data binding expressions if provided. For example : android:layout_height="@{@dimen/main_layout_height, default=wrap_content}" It will take wrap_content while designing and will act as a wrap_content in preview pane. Another example i...

The alert method displays a visual alert box on screen. The alert method parameter is displayed to the user in plain text: window.alert(message); Because window is the global object, you can call also use the following shorthand: alert(message); So what does window.alert() do? Well, let's ta...