Mobile Development Articles

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How to get current foreground activity context in Android?

Ankith Reddy
Ankith Reddy
Updated on 30-Jul-2019 6K+ Views

This example demonstrate about How to get current foreground activity context in AndroidStep 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 src/MyApp.javapackage app.tutorialspoint.com.sample ; import android.app.Activity ; import android.app.Application ; public class MyApp extends Application {    private Activity mCurrentActivity = null;    @Override    public void onCreate () {       super .onCreate() ;    }    public Activity getCurrentActivity () {       return mCurrentActivity ;    }    public void setCurrentActivity ...

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How to check if Location Services are enabled in Android App?

George John
George John
Updated on 30-Jul-2019 2K+ Views

This example demonstrate about How to check if Location Services are enabled 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.java     Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.content.Context ; import android.content.DialogInterface ; import android.content.Intent ; import android.location.LocationManager ; import android.os.Bundle ; import android.provider.Settings ; import android.support.v7.app.AlertDialog ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.Button ; import android.widget.TextView ; public class MainActivity extends AppCompatActivity ...

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How can I validate EditText input in Android?

Ankith Reddy
Ankith Reddy
Updated on 30-Jul-2019 1K+ Views

This example demonstrate about How can I validate EditText input 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.java     Step 3 − Add the following code to src/ValidateFilter.javapackage app.tutorialspoint.com.sample ; import android.text.InputFilter ; import android.text.Spanned ; import android.util.Log ; import java.util.regex.Matcher ; import java.util.regex.Pattern ; public class ValidateFilter implements InputFilter {    @Override    public CharSequence filter (CharSequence source , int start , int end , Spanned dest ,    int ...

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How to define a MIN and MAX value for EditText in Android?

Chandu yadav
Chandu yadav
Updated on 30-Jul-2019 3K+ Views

This example demonstrate about How to define a MIN and MAX value for 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.java     Step 3 − Add the following code to src/MinMaxFilter.javapackage app.tutorialspoint.com.sample ; import android.text.InputFilter ; import android.text.Spanned ; public class MinMaxFilter implements InputFilter {    private int mIntMin , mIntMax ;    public MinMaxFilter ( int minValue , int maxValue) {       this . mIntMin = minValue ...

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How can I define underlined text in an Android layout xml file?

Chandu yadav
Chandu yadav
Updated on 30-Jul-2019 2K+ Views

This example demonstrate about How can I define underlined text in an Android layout xml file.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.java     Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; import android.text.SpannableString ; import android.text.style.UnderlineSpan ; import android.widget.TextView ; public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate (Bundle savedInstanceState) {       super .onCreate(savedInstanceState) ;   ...

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How to add manifest permission to an application in Android?

George John
George John
Updated on 30-Jul-2019 706 Views

This example demonstrate about How to add manifest permission to an application 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.java Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate (Bundle savedInstanceState) {       super .onCreate(savedInstanceState) ;       setContentView(R.layout. activity_main ) ;    } }Step 4 − Add the following ...

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How do I get the resource id of an image if I know its name in Android?

Ankith Reddy
Ankith Reddy
Updated on 30-Jul-2019 3K+ Views

This example demonstrate about How do I get the resource id of an image if I know its name in AndroidStep 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.java         Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; import android.util.Log ; import android.widget.TextView ; public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate (Bundle savedInstanceState) {       ...

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How to make a background 25% transparent on Android?

George John
George John
Updated on 30-Jul-2019 391 Views

This example demonstrate about How to make a background 25% transparent 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.java Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; 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 ...

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How to disable action bar permanently in Android?

Ankith Reddy
Ankith Reddy
Updated on 30-Jul-2019 625 Views

This example demonstrate about How to disable action bar permanently 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.java     Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate (Bundle savedInstanceState) {       super .onCreate(savedInstanceState) ;       setContentView(R.layout. activity_main ) ;    } }Step 4 − Add the ...

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How to get the current location latitude and longitude in iOS?

Kumar Varma
Kumar Varma
Updated on 30-Jul-2019 3K+ Views

Almost all the application uses location services, thus having complete understanding on location is necessary. In this post we will be seeing how to get current location’s latitude and longitude.For this we will be using CLLocationManager, you can read more about it herehttps://developer.apple.com/documentation/corelocation/cllocationmanagerWe will be developing a sample application where we will print user’s latitude and longitude on viewDidLoad method, alternatively you can print on tap of a button also on UILabel as per need.So let’s get started, Step 1 − Open Xcode → New Projecr → Single View Application → Let’s name it “Location”Step 2 − Open info.plist file ...

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