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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to create CollectionView Layout in an iOS App?
CollectionView with TableView are two of many fundamental concept of iOS development, every developer should master both to be a good developer.In this post we will be focussing mainly on CollectionView, CollectionView is same as table view with some difference, Collection View supports both horizontal and vertical scrolling which looks like a grid. CollectionView in iOS is also referred to grid view in Android.To read more about it you can refer https://developer.apple.com/documentation/uikit/uicollectionviewAs you can see Collection View consists of Supplementary View and Cell, The collection view presents items onscreen using a cell, which is an instance of the UICollectionViewCell class ...
Read MoreHow to parse HTML in android?
This example demonstrates how do I parse HTML 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. Step 3 – Add the given dependency in the build.gradle (Module: app)implementation 'org.jsoup:jsoup:1.11.2'Step 4 − Add the following code to src/MainActivity.javaimport android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.TextView; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException; public class MainActivity extends AppCompatActivity { Button button; TextView textView; ...
Read MoreHow can I remove a button or make it invisible in Android?
This example demonstrates how remove a button or make it invisible 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. Step 3 − Add the following code to src/MainActivity.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class MainActivity extends AppCompatActivity { OnClickListener listener1=null; OnClickListener listener2=null; Button button1; Button button2; @Override protected void onCreate(Bundle ...
Read MoreHow to display Toast in Android?
This example demonstrates how to display Toast in Android.Step 1 − Create a new project in Android Studio, go to File rArr; 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.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Displaying Toast with Hello World message Toast.makeText(getApplicationContext(), "Hello World", Toast.LENGTH_SHORT).show(); ...
Read MoreHow to create EditText with rounded corners in Android?
This example demonstrates how to create EditText with rounded corners 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. Step 3 − Create a drawable resource file and Add the following code to drawable/et_style.xml Step 4 − Add the following code to src/MainActivity.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow can I get android device screen height, width?
This example demonstrates how do I get android device screen height, width.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.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.DisplayMetrics; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView height, width, inches; DisplayMetrics displayMetrics; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ...
Read MoreHow to download and save an image from a given URL in android?
This example demonstrates how do I download and save an image from a given URL 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. Step 3 − Add the following code to src/MainActivity.javaimport android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.AsyncTask; import android.support.design.widget.CoordinatorLayout; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import ...
Read MoreHow to put a ListView into a ScrollView without it collapsing on Android?
This example demonstrates how to put a ListView into a ScrollView without it collapsing 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.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.ListView; public class MainActivity extends AppCompatActivity { private String listview_array[]={ "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN" ...
Read MoreHow to start service using Alarm Manager in android?
This example demonstrates how do I start a service using alarm manager 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. Step 3 − Add the following code to src/MainActivity.javapackage app.com.sample; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; import java.util.Calendar; public class MainActivity extends AppCompatActivity { Button btnStart, btnStop; PendingIntent pendingIntent; @Override protected void onCreate(Bundle savedInstanceState) ...
Read MoreHow to use InputFilter to limit characters in an editText in Android?
This example demonstrates how do I use inputfilter to limit characters in an editText 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. Step 3 − Add the following code to src/MainActivity.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.InputFilter; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends AppCompatActivity { EditText editText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText = ...
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