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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to create a Dialog Box without a title in Android?
This example demonstrates how to create a Dialog Box without a title 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.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class Dialog extends AppCompatActivity { Button ...
Read MoreHow to change action bar size in Android?
This example demonstrates how to change action bar size 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/values/styles.xml @color/colorAccent @color/colorPrimary @color/colorAccent 36dip Step 3 − Add the following code to res/layout/activity_main.xml. Step 4 − Add the following code to src/MainActivity.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends ...
Read MoreHow to create Android Hello World App?
This example demonstrates how to create Android Hello World App.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; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } }Step 4 − Add the following code to Manifests/AndroidManifest.xml ...
Read MoreAndroid bundle to pass data between activities?
This example demonstrates how to pass data between activities.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 res/layout/activity_second.xml. Step 4 − Add the following code to src/MainActivity.javapackage com.example.sample; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.text.TextUtils; import android.view.View; import android.widget.Button; import android.widget.EditText; import ...
Read MoreHow do I create a transparent Activity in an Android App?
This example demonstrates how to create a transparent 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/values/styles.xml. #33000000 true @android:color/transparent @null true @android:style/Animation Step 3 − Add the following code to res/layout/activity_main.xml. Step 4 − Add the following code to src/MainActivity.javapackage com.example.transparentactivity; import android.support.v7.app.AppCompatActivity; ...
Read MoreHow to read value from string.xml in Android?
This example demonstrates how to read value from string.xml 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/values/strings.xml Sample Test string Step 3 − Add the following code to res/layout/activity_main.xml Step 4 − Add the following code to src/MainActivity.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } }Step ...
Read MoreWhen can we use the pack() method in Java?
The pack() method is defined in Window class in Java and it sizes the frame so that all its contents are at or above their preferred sizes. An alternative to the pack() method is to establish a frame size explicitly by calling the setSize() or setBounds() methods. In general, using the pack() method is preferable to call than setSize() method, since pack leaves the frame layout manager in charge of the frame size and layout managers are good at adjusting to platform dependencies and other factors that affect the component size.Syntaxpublic void pack()Exampleimport java.awt.*; import javax.swing.*; public class PackMethodTest extends JFrame { public ...
Read MoreHow to customise iOS button to set text and color?
In this post we will be seeing how to customise iOS button.So let’s get started.Step 1 − Open Xcode → New Project → Single View Application → Let’s name it “CustomiseButton”Step 2− Open Main.storyboard and add a button as shown below. We will customize this buttonThere are two ways to customise this buttonUsing StoryboardStep 1 − Click on the buttonStep 2 − In the right panel, in the attribute inspector you can change the text color, text and background color of the button as shown belowRun the project you will see the customise button as belowNow we will see the ...
Read MoreHow can we apply different borders to JButton in Java?
A JButton is a subclass of AbstractButton class and it can be used for adding platform-independent buttons in a Java Swing application. A JButon can generate an ActionListener interface when the user clicking on a button, it can also generate MouseListener when a user can do some actions from the mouse and KeyListener when a user can do some actions from the keyboard.We can set different borders like LineBorder, BevelBorder, EtchcedBorder, EmptyBorder, TitledBorder, etc to JButton using the setBorder() method of JComponent class.Syntaxpublic void setBorder(Border border)Exampleimport javax.swing.*; import java.awt.*; public class JButtonBordersTest extends JFrame { private JButton button[]; private JPanel panel; public JButtonBordersTest() { ...
Read MoreHow can we add multiple sub-panels to the main panel in Java?
A JPanel is a subclass of JComponent class and it is an invisible component in Java. The FlowLayout is a default layout for a JPanel. We can add most of the components like buttons, text fields, labels, tables, lists, trees, etc. to a JPanel.We can also add multiple sub-panels to the main panel using the add() method of Container class.Syntaxpublic Component add(Component comp)Exampleimport java.awt.*; import javax.swing.*; public class MultiPanelTest extends JFrame { private JPanel mainPanel, subPanel1, subPanel2; public MultiPanelTest() { setTitle("MultiPanel Test"); mainPanel = new JPanel(); // main panel mainPanel.setLayout(new GridLayout(3, 1)); mainPanel.add(new JLabel("Main ...
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