This example demonstrates how do I gridView layout in an 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 – Open build.gradle(Module: app) and add the following dependency −implementation 'com.android.support:gridlayout-v7:28.0.0'Step 4 − Add the following code to src/MainActivity.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.GridView; import android.widget.Toast; public class MainActivity extends AppCompatActivity {    GridView gridView;    String[] numberInWords = {"One", "Two", "Three", "Four", "Five", "Six", "Seven", ... Read More

This example demonstrates how do I display a listView in an android aler dialog.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.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.ListView; public class MainActivity extends AppCompatActivity {    String[] names = {"India", "Brazil", "Argentina",       "Portugal", "France", "England", "Italy"};    ArrayAdapter adapter;    ListView listView;    @Override    protected ... Read More

This example demonstrates how do I get the value of a editText filed 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.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    Button button;    EditText editText;    String string;    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) ... Read More

This example demonstrates how do I parse JSONArray 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.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class MainActivity extends AppCompatActivity {    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);       textView = findViewById(R.id.textView);     ... Read More

This example demonstrates how do I hide soft keyboard on android after clicking outside edittext.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.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    EditText editText;    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {       ... Read More

This example demonstrates how do I find serial number of android device.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.app.AlertDialog; import android.content.pm.PackageManager; import android.support.v4.content.ContextCompat; import android.os.Build; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.view.View; import android.widget.Toast; public class MainActivity extends AppCompatActivity {    public static final int REQUEST_CODE_PHONE_STATE_READ = 100;    private int checkedPermission = PackageManager.PERMISSION_DENIED;    TelephonyManager ... Read More

This example demonstrates how do I add custom adapter for my listView 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.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.widget.ListView; import java.util.ArrayList; public class MainActivity extends AppCompatActivity {    ListView listView;    ArrayList arrayList = new ArrayList();    MyAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main); ... Read More

This example demonstrates how do I draw text on imagein 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.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);       textView = findViewById(R.id.text);       textView.setText("This ... Read More

This example demonstrates how do I run an android service always in background.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 the project, Select New >> Service >> Service and add the following to MyServices.javapackage app.com.sample; import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.widget.Toast; public class MyService extends Service {    public MyService() {    }    @Override    public int onStartCommand(Intent intent, int flags, int ... Read More

This example demonstrates how do I show soft keyboard based on Android EditText is focused.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.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; public class MainActivity extends AppCompatActivity {    EditText editText;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);       editText ... Read More