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Mobile Development Articles
Page 53 of 156
How to set margin of ImageView using code in Android?
This example demonstrates how do I set margin of ImageView using code 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 – Copy an image file and paste in the res/drawableStep 4 − Add the following code to src/MainActivity.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ImageView; import android.widget.RelativeLayout; public class MainActivity extends AppCompatActivity { ImageView imageView; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to lock screen orientation on all android devices programmatically?
This example demonstrates how do I lock screen orientation on all android devices programmatically.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.pm.ActivityInfo; import android.content.res.Configuration; 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); int currentOrientation = getResources().getConfiguration().orientation; ...
Read MoreHow to programmatically set drawableLeft on Android button?
This example demonstrates how do I programmatically set drawableleft 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.graphics.drawable.Drawable; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Button; public class MainActivity extends AppCompatActivity { Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = findViewById(R.id.button); Drawable ...
Read MoreHow to change the text color of Menu item in Android?
This example demonstrates how do I change the text color of the menu item 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 – Right-click on res/drawable, create any Vector Asset (Example: ic_icon.xml)Step 4 – Right-click on res, select New -> Android Resource Directory – menu.Step 5 – Right Click on res/menu and create a new Menu Resource file and add the following code in res/menu/sample_menu.xml ...
Read MoreHow 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 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; ...
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