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Mobile Development Articles
Page 39 of 156
How can I override the 'Home' button in my Android App?
This example demonstrates how do I 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 androidx.appcompat.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); } @Override protected void onUserLeaveHint(){ Toast.makeText(getApplicationContext(), "Home Button is Pressed", Toast.LENGTH_SHORT).show(); ...
Read MoreHow to add a button to PreferenceScreen in Android?
This example demonstrates how do I add a button to PreferenceScreen 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.javaimport android.os.Bundle; import android.widget.Toast; import androidx.appcompat.app.ActionBar; import androidx.appcompat.app.AppCompatActivity; import androidx.preference.Preference; import androidx.preference.PreferenceFragmentCompat; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_activity); getSupportFragmentManager().beginTransaction().replace(R.id.settings, new SettingsFragment()).commit(); ...
Read MoreHow to resize Image in Android App?
This example demonstrate about How to resize Image in Android 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 app.tutorialspoint.com.sample ; import android.app.Activity ; import android.content.Intent ; import android.graphics.Bitmap ; import android.net.Uri ; import android.provider.MediaStore ; import android.support.v7.app.AppCompatActivity ; import android.os.Bundle ; import android.view.View ; import android.widget.ImageView ; import java.io.IOException ; ...
Read MoreHow can I save a HashMap to Shared Preferences in Android?
This example demonstrates about How can I save a HashMap to Shared Preferences 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.content.Context; import android.content.SharedPreferences; import android.os.Bundle; import android.view.View; import android.widget.EditText; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; import org.json.JSONObject; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Objects; public class MainActivity extends AppCompatActivity { final String ...
Read MoreSending an Intent to browser to open specific URL in Android?
This example demonstrates how do I send an Intent to browser to open specific 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 androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.view.View; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void GetUrlFromIntent(View view) ...
Read MoreSubscript and SuperScript a string in Android?
This example demonstrates how do I Subscript and SuperScript a string 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 androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.style.RelativeSizeSpan; import android.text.style.SubscriptSpan; import android.text.style.SuperscriptSpan; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; String strText; SpannableStringBuilder spannableStringBuilder; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
Read MoreWorking with Recycler View in Android App
This example demonstrates about Working with Recycler View in Android AppStep 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.os.Bundle; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.DefaultItemAnimator; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private List movieList = new ArrayList(); private MoviesAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
Read MoreHow do you animate the change of background color of a view on Android?
This example demonstrates how do I animate the change of background color of a View 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 androidx.appcompat.app.AppCompatActivity; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.TransitionDrawable; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; Button button; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to change font face of Webview in Android?
This example demonstrates how do I change font face of WebView 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 an assets folder. Right click asset folder >> Create a new file (webView1.html) and the following code: WebView9 @font-face { font-family: 'Font'; src:url("file:///android_asset/Font.otf") } body { font-family: 'Font', serif; ...
Read MoreHow to develop a soft keyboard for Android?
This example demonstrates how do I develop a soft keyboard for 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 androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity { EditText editText; TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ...
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