Kamis, 08 Mei 2014

Running PathDashPathEffect example

This example implement running PathDashPathEffect, by varying phase parameter.


Modify MyView.java from the post.

package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.graphics.PathDashPathEffect;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

Paint paint;
Path path;

Path pathShape;
float phase;
float advance;
PathDashPathEffect.Style style;

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.setColor(Color.RED);
paint.setStrokeWidth(20);
paint.setStyle(Paint.Style.STROKE);

path = new Path();

pathShape = new Path();
pathShape.addCircle(10, 10, 10, Direction.CCW);

phase = 0;
advance = 30.0f;
style = PathDashPathEffect.Style.ROTATE;

}

@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(Color.GRAY);

path.reset();
path.moveTo(50, 50);
path.lineTo(50, getHeight()-50);
path.lineTo(getWidth()-50, getHeight()-50);
path.lineTo(getWidth()-50, 50);
path.close();

phase++;
PathDashPathEffect pathDashPathEffect =
new PathDashPathEffect(pathShape, advance, phase, style);
paint.setPathEffect(pathDashPathEffect);

canvas.drawPath(path, paint);

invalidate();
}

}


- Effect of advance, phase, style in PathDashPathEffect

- More examples of drawing path on custom View

0 komentar:

Posting Komentar

Copyright © 2012 Codding News All Right Reserved