Skip to main content

Posts

android - How to send and receive local broadcast

MainActivity.java package com.cfsuman.androidtutorials; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import androidx.localbroadcastmanager.content.LocalBroadcastManager; import java.util.Random; public class MainActivity extends Activity { private Context mContext; // Initialize a new BroadcastReceiver instance private BroadcastReceiver mRandomNumberReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // Get the received random number int receivedNumber = intent.getIntExtra( "RandomNumber",-1); // Display a notification that the broadcast received Toast.makeText( ...
Read more

android - How to rotate a Bitmap on Canvas center

MainActivity.java package com.cfsuman.androidtutorials; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { private Resources mResources; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the Resources mResources = getResources(); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Get the...
Read more

android - How to rotate a Canvas

MainActivity.java package com.cfsuman.androidtutorials; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Initialize a new Bitmap Bitmap bitmap = Bitmap.createBitmap( 1200, // Width 600, // Height Bitmap.Config.ARGB_8888 // Config ); ...
Read more

android - How to draw Rounded Rectangle on Canvas

MainActivity.java package com.cfsuman.androidtutorials; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.RectF; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Initialize a new Bitmap Bitmap bitmap = Bitmap.createBitmap( 1200, // Width 600, // Height Bitmap.Config.ARGB_888...
Read more

android - How to draw a Bitmap on a Canvas

MainActivity.java package com.cfsuman.androidtutorials; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { private Resources mResources; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the Resources mResources = getResources(); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Bitmap to draw on the canvas Bitmap bitmap = BitmapFactory...
Read more

android - How to draw a Line on Canvas

MainActivity.java package com.cfsuman.androidtutorials; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Initialize a new Bitmap object Bitmap bitmap = Bitmap.createBitmap( 1200, // Width 600, // Height Bitmap.Config.ARGB_8888 // Config ...
Read more

android - How to draw a Rectangle on a Canvas

MainActivity.java package com.cfsuman.androidtutorials; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Rect; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout Button button = findViewById(R.id.button); ImageView imageView = findViewById(R.id.imageView); // Set a click listener for Button widget button.setOnClickListener(view -> { // Initialize a new Bitmap object Bitmap bitmap = Bitmap.createBitmap( 1200, // Width 600, // Height Bitmap.Config.AR...
Read more