CubicBezire Drawing In Android Canvasview

This example will explain how to draw cubic bezire in canvas view.

Algorithm:

1.) Create a new project by File-> New -> Android Project name it DrawCubicBezire.

2.) Write following into main.xml:

 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".DrawCubicBezireActivity" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />

</RelativeLayout>

 

 

3.) Create and write following into MyView.java:

 

package com.example.drawcubicbezire;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

Paint paint;
Path path;

public MyView(Context context) {
super(context);
init();
}

public MyView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}

public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}

private void init(){
paint = new Paint();

paint.setStyle(Paint.Style.STROKE);

}

@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);

path = new Path();
paint.setColor(Color.RED);
paint.setStrokeWidth(3);
path.moveTo(50, 50);
path.cubicTo(300, 50, 100, 400, 400, 400);
canvas.drawPath(path, paint);

path.reset();
paint.setColor(Color.GRAY);
paint.setStrokeWidth(1);
path.moveTo(50, 50);
path.lineTo(300, 50);
path.lineTo(100, 400);
path.lineTo(400, 400);
canvas.drawPath(path, paint);
}
}

 

 

4.) Run for output.

Steps:

1.) Create a project named DrawCubicBezire and set the information as stated in the image.

Build Target: Android 4.4
Application Name: DrawCubicBezire
Package Name: com.example.DrawCubicBezire
Activity Name: DrawCubicBezireActivity

DrawCubicBezire1

2.) Open DrawCubicBezireActivity.java file and write following code there:

 

package com.example.drawcubicbezire;

import android.app.Activity;
import android.os.Bundle;

public class DrawCubicBezireActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new MyView(this));
}
}

 

 

3.) Compile and build the project.

Output

DrawCubicBezire2