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Mobile Development Articles
Page 43 of 156
How to change a textView Style at runtime in android?
This example demonstrates how do I change a textView style in runtime 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 in res/values/styles.xml bold|italic #FFFFFF normal #C0C0C0
Read MoreHow to determine the size of an android view at run time?
This example demonstrates how do I determine the size of an android view at run time.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 and paste an image (.png/.jpg/.jpeg) into res/drawableStep 4 − Add the following code to src/MainActivity.javaimport android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.view.ViewTreeObserver; import android.widget.ImageView; import android.widget.TextView; public class MainActivity extends AppCompatActivity { ImageView imageView; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to rotate an Image in ImageView by an angle on Android?
This example demonstrates how do I rotate an image in ImageView by an angle 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 android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends AppCompatActivity { ImageView imageView; Button btnRotate; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ...
Read MoreWhat permission do I need to access Internet from an Android application?
This example demonstrates how do I open google from android app using Internet permission.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.webkit.WebView; public class MainActivity extends AppCompatActivity { WebView webView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); webView = findViewById(R.id.webView); ...
Read MoreHow to use BroadcastReceiver in Android?
This example demonstrates how do I use BroadcastReceiver 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.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.wifi.WifiManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.CompoundButton; import android.widget.Switch; import android.widget.Toast; public class MainActivity extends AppCompatActivity { Switch wifiSwitch; WifiManager wifiManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...
Read MoreHow to start an android application at boot time?
This example demonstrates how do I start an android application at boot time.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 new Java class (StartAppOnBoot.java) and add the following code −import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; public class StartAppOnBoot extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) { Intent i = new Intent(context, ...
Read MoreHow to use ScrollBar in Android?
This example demonstrates how do I use ScrollView 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. ...
Read MoreHow to get a bitmap from Url in Android app?
This example demonstrates how do I get a bitmap from Url 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 – Copy and paste an image (.png/.jpg/.jpeg) into res/drawableStep 4 − Add the following code to src/MainActivity.javaimport android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.AsyncTask; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ImageView; import java.io.IOException; import java.io.InputStream; public class MainActivity extends AppCompatActivity { Bitmap ...
Read MoreHow to get the Action bar height in android?
This example demonstrates how do I get the action bar height 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.TextView; import android.support.v7.widget.Toolbar; public class MainActivity extends AppCompatActivity { Toolbar toolbar; Button button; TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { ...
Read MoreHow to pass a variable from Activity to Fragment in Android?
This example demonstrates how do I pass a variable from activity to Fragment 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.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { EditText editText; Button button; @Override protected void onCreate(Bundle savedInstanceState) { ...
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