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Programming Articles
Page 2525 of 2547
Stack and Queue in Python using queue Module
In Python, it is very easy to implement stack and queue data structures. Stack is called LIFO because Stack works on the principle of "Last-in, first-out" and Queue is called FIFO because Queue works on the principle of "First-in, first-out", and the inbuilt functions in Python make the code shorter and simple. The Queue module implements multi-producer, multi-consumer queues and It is especially useful in threaded programming when information must be exchanged safely between multiple threads. The Queue class in this module implements all the required locking semantics and it depends on the availability of thread support in Python. This ...
Read MoreLoading Image using Glide in Android
Before getting into Glide example, we should know what is glide, Glide is an image processing library developed by muyangmin. Using glide library we can show image, decode images, cache images, animated gifs and many more.This example demonstrate about how to integrate glide in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code in build.gradle(Module:app).apply plugin: 'com.android.application' android { compileSdkVersion 28 defaultConfig { applicationId "com.example.andy.myapplication" minSdkVersion 15 ...
Read MoreNavigationView in ActionBar in Android
Before getting into the Navigation view example, we should know about navigation view. Navigation view is just like a sliding menu in HTML. Navigation view is extended by navigatoin drawer. Most of use cases of Navigation view is used to redirect different activities or show profile information.This example demonstrate about how to integrate NavigationView in ActionBarStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step2 − While creating project we should select Navigation drawer activity as shown belowAfter selecting navigation drawer activity click on ...
Read MoreWhat is search view in android?
Before getting into searchview example, we should know what is search view in android, search view is just like search box in HTML. we can search anything from particular list items.This example demonstrate about how to integrate search view in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code we are giving search view and listview because search view going to search element from ...
Read MoreGenerate a graph using Dictionary in Python
The graphs can be implemented using Dictionary in Python. In the dictionary, each key will be the vertices, and as value, it holds a list of connected vertices. So the entire structure will look like Adjacency list of a graph G(V, E). We can use the basic dictionary object, but we are using default dict. It has some additional features. It has one additional writable instance variable. We are providing a text file, which contains the number of vertices, number of edges, names of vertices, and the list of edges. For undirected graph, we are providing two edges like ...
Read MoreHandler in android ?
We cant touch background thread to main thread directly so handler is going to collect all events which are available in main thread in a queue and posses this queue to looper class.In android Handler is mainly used to update the main thread from background thread or other than main thread. There are two methods are in handler.Post() − it going to post message from background thread to main thread using looper.sendmessage() − if you want to organize what you have sent to ui (message from background thread) or ui functions. you should use sendMessage().This example demonstrate about how to ...
Read MoreFormatted text in Linux Terminal using Python
In this section, we will see how to print formatted texts in Linux terminal. By formatting, we can change the text color, style, and some special features. Linux terminal supports some ANSI escape sequences to control the formatting, color and other features. So we have to embed some bytes with the text. So when the terminal is trying to interpret them, those formatting will be effective. The general syntax of ANSI escape sequence is like below − \x1b[A;B;C A is the Text Formatting Style B is the Text Color or Foreground Color C is the Background ...
Read MoreHow to use XmlSerializer in C#?
Serialization/ De-serialization allow communication with another application by sending and receiving data. With XmlSerializer, you can control how objects are encoded into XML. To perform XML Serialization, you need the following two classes − StreamWriter class XmlSerializer class Call the Serialize method with the parameters of the StreamWriter and object to serialize. string myPath = "new.xml"; XmlSerializer s = new XmlSerializer(settings.GetType()); StreamWriter streamWriter = new StreamWriter(myPath); s.Serialize(streamWriter, settings); An XML file is visible with the name “new.xml”. Now to deserialize. MySettings mySettings = new MySettings(); string myPath = "new.xml"; XmlSerializer ...
Read MoreHow to access unique Android device ID?
If you want to check unique device id like IMEI number through programmatically we can do this by telephonic manger as shown below example −Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.javaimport android.Manifest; import android.annotation.SuppressLint; import android.app.ProgressDialog; import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.support.annotation.RequiresApi; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import ...
Read MoreHow to check visibility of virtual keyboard on Android?
There are some situations, we should find keyboard is visible or not in particular activity. In this example we can check visibility of virtual keyboard on android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.javaimport android.graphics.Rect; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.constraint.ConstraintLayout; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.view.ViewTreeObserver; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public ...
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