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Showing posts from November, 2015

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...
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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 ); ...
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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...
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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...
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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 ...
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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...
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android - How to draw a circle 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.os.Bundle; import android.app.Activity; import android.view.View; 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(new View.OnClickListener() { @Override public void onClick(View view) { // Initialize a new Bitmap object Bitmap bitmap = Bitmap.createBitmap( ...
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android - Draw border and shadow around a bitmap

activity_main.xml <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FFF" android:padding="24dp" tools:context=".MainActivity"> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Draw Border" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <ImageView android:id="@+id/iv" android:layout_width="0dp" android:layout_height="250dp" an...
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android - How to create rounded corners ImageView

activity_main.xml <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="24dp" tools:context=".MainActivity" android:background="#F8F8FF"> <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Rounded It" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <ImageView android:id="@+id/iv" android:layout_width="matc...
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