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/**
 * Created by Jay on 2015/10/15 0015.
 */
public class MyView extends View{

    private Paint mPaint;

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

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

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

    private void init(){
        mPaint = new Paint();
        mPaint.setAntiAlias(true);          //Anti-aliasing
        mPaint.setColor(getResources().getColor(R.color.puple));//Brush color
        mPaint.setStyle(Paint.Style.FILL);  //Brush style
        mPaint.setTextSize(36);             //Text size for drawing, unit px
        mPaint.setStrokeWidth(5);           //Brush thickness
    }

    //Override this method to draw here
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
    }

}

canvas.drawColor(getResources().getColor(R.color.yellow));   //Set canvas background color

canvas.drawCircle(200, 200, 100, mPaint);           //Draw a solid circle

canvas.drawRect(0, 0, 200, 100, mPaint);            //Draw a rectangle

canvas.drawBitmap(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher), 0, 0, mPaint);

canvas.drawArc(new RectF(0, 0, 100, 100),0,90,true,mPaint);  //Draw an arc area