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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to get a working vertical seekBar in Android?
This example demonstrates how do I get a working vertical seekBar 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.widget.SeekBar; import android.widget.TextView; public class MainActivity extends AppCompatActivity { SeekBar seekBar; TextView textView; int min = 0, max = 100, current = 50; @Override protected ...
Read MoreHow can I create custom button in Android using XML Styles?
This example demonstrates how do I create custom button in Android using XML Styles.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 – Right Click on res/drawable, Select new → Drawable resource file and add the following code in custom_dialog.xml Step 4 – Right Click on res/drawable, Select new → Drawable resource file and add the following ...
Read MoreHow to request Location permission at run time in Android?
This example demonstrates how do I request Location permission 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.Manifest; import android.content.pm.PackageManager; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; 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); if ...
Read MoreList Methods in Python - in, not in, len(), min(), max()
In this article, we will learn about various types of list methods available to us in Python 3.x. Or earlier. These operators allow us to perform the basic operations on the list content.In & Not in operators“in” operator − This operator is used to check whether an element is present in the passed list or not. Returns true if the element is present in the list otherwise returns false.“not in” operator − This operator is used to check whether an element is not present in the passed list or not. Returns true if the element is not present in the ...
Read MoreIterate over a dictionary in Python
In this article, we will learn about iteration/traversal of a dictionary in Python 3.x. Or earlier.A dictionary is an unordered sequence of key-value pairs. Indices can be of any immutable type and are called keys. This is also specified within curly braces.Method 1 − Using iterables directlyExampledict_inp = {'t':'u', 't':'o', 'r':'i', 'a':'l', 's':'p', 'o':'i', 'n':'t'} # Iterate over the string for value in dict_inp: print(value, end='')OutputtrasonMethod 2 − Using iterables for values of the dictionaryExampledict_inp = {'t':'u', 't':'o', 'r':'i', 'a':'l', 's':'p', 'o':'i', 'n':'t'} # Iterate over the string for value in dict_inp.values(): print(value, end='')OutputoilpitMethod 3 − ...
Read MoreImportance of the parseBoolean() method in Java?
The parseBoolean() method is an important method of a Boolean class. The parseBoolean() is a static method and can parse the String method argument into a Boolean object. The parseBoolean() method of Boolean class returns the boolean represented by the string argument.Syntaxpublic static boolean parseBoolean(String s)Exampleimport java.util.Scanner; public class ParseBooleanMethodTest { public static void main(String[] args) { System.out.print("Are you ready to play cricket(true/false)?"); Scanner scanner = new Scanner(System.in); String str = scanner.nextLine(); scanner.close(); // Convert the user input into boolean boolean answer ...
Read MoreHow to use SearchView in Android?
This example demonstrates how do I use SearchView 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 projectStep 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.widget.ArrayAdapter; import android.widget.ListView; import android.widget.SearchView; import android.widget.Toast; import java.util.ArrayList; public class MainActivity extends AppCompatActivity { SearchView searchView; ListView listView; ArrayList list; ArrayAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
Read MoreHow to restart an Activity in Android?
This example demonstrates how do I restart an Activity 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.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import java.util.Random; public class MainActivity extends AppCompatActivity { TextView textView; Button button; Random random = new Random(); @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to play audio file from the assets directory in Android?
This example demonstrates how do I play audio file from the assets directory 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 asset folder, Right click on the project → New → Folder → Asset Folder.Copy and paste the audio file into the assets folder.Step 4 − Add the following code to src/MainActivity.javaimport android.content.res.AssetFileDescriptor; import android.media.MediaPlayer; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; ...
Read MoreHow to use SearchView in Toolbar Android?
This example demonstrates how do I use searchView in Toolbar 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.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.SearchView; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { Toolbar toolbar; ArrayAdapter adapter; ListView listView; TextView emptyView; ...
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