github地址：https://github.com/sddyljsx/Android-SurfView-WaveView

package neal.canvas;

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;

/**

* Created by songxun.sx on 2015/8/14.

*/

public class MyView extends View {

NextFrameAction nextFrameAction;

RectF rectF;

Paint paint;

Paint paint2;

Paint paint3;

Path path;

Path path1;

int width;

int height;

int w = 0;

double startTime;

int waveAmplitude;

int waveRange;

int highLevel;

public MyView(Context context) {

super(context);

}

public MyView(Context context, AttributeSet attrs) {

super(context, attrs);

}

public MyView(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

}

private void init() {

nextFrameAction = new NextFrameAction();

width = getMeasuredWidth();

height = getMeasuredHeight();

waveRange = width;

rectF = new RectF(5, 5, width - 5, height - 5);

paint = new Paint();

paint2 = new Paint();

paint3=new Paint();

paint.setAntiAlias(true);

paint.setColor(Color.RED);

paint3.setAntiAlias(true);

paint3.setColor(0x99ff0000);

paint2.setAntiAlias(true);

paint2.setStyle(Paint.Style.STROKE);

paint2.setStrokeWidth(5);

paint2.setColor(Color.RED);

path = new Path();

path1 = new Path();

startTime = System.currentTimeMillis();

waveAmplitude = 20;

highLevel = (int) (height * (0.5) + waveAmplitude);

}

protected class NextFrameAction implements Runnable {

@Override

public void run() {

path.reset();

path1.reset();

path.addArc(rectF, 90.0f - 145.0f / 2.0f, 145.0f);

path1.addArc(rectF, 90.0f - 145.0f / 2.0f, 145.0f);

w += 5;

if (w >= (width - 5) * 2) {

w = 0;

}

for (int i = 5; i < width - 5; i++) {

path.lineTo(i, (float) (highLevel + waveAmplitude * Math.cos((float) (i + w) / (float) (width - 5) * Math.PI)));

path1.lineTo(i, (float) (highLevel - waveAmplitude * Math.cos((float) (i + w) / (float) (width - 5) * Math.PI)));

}

path.close();

path1.close();

invalidate();

}

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

init();

}

@Override

protected void onDraw(Canvas canvas) {

canvas.drawCircle(width / 2, height / 2, width / 2 - 5, paint2);

//canvas.drawArc(rectF,90.0f-145.0f/2.0f,145.0f,false,paint);

canvas.drawPath(path, paint);

canvas.drawPath(path1,paint3);

postDelayed(nextFrameAction, 4);

}

}

surfaceview代碼：

package neal.canvas;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Path;

import android.graphics.PixelFormat;

import android.graphics.RectF;

import android.util.AttributeSet;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import java.util.concurrent.ScheduledExecutorService;

import java.util.concurrent.ScheduledThreadPoolExecutor;

import java.util.concurrent.TimeUnit;

/**

* Created by songxun.sx on 2015/8/17.

*/

public class MyView2 extends SurfaceView implements SurfaceHolder.Callback {

SurfaceHolder surfaceHolder;

NextFrameAction nextFrameAction;

RectF rectF;

Paint paint;

Paint paint2;

Paint paint3;

Path path;

Path path1;

int width;

int height;

int w = 0;

double startTime;

int waveAmplitude;

int waveRange;

int highLevel;

Canvas canvas;

public MyView2(Context context) {

super(context);

}

public MyView2(Context context, AttributeSet attrs) {

super(context, attrs);

}

public MyView2(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

}

private void init() {

nextFrameAction = new NextFrameAction();

width = getMeasuredWidth();

height = getMeasuredHeight();

waveRange = width;

rectF = new RectF(5, 5, width - 5, height - 5);

paint = new Paint();

paint2 = new Paint();

paint3 = new Paint();

paint.setAntiAlias(true);

paint.setColor(Color.RED);

paint3.setAntiAlias(true);

paint3.setColor(0x99ff0000);

paint2.setAntiAlias(true);

paint2.setStyle(Paint.Style.STROKE);

paint2.setStrokeWidth(5);

paint2.setColor(Color.RED);

path = new Path();

path1 = new Path();

startTime = System.currentTimeMillis();

waveAmplitude = 20;

highLevel = (int) (height * (0.5) + waveAmplitude);

surfaceHolder = this.getHolder();

//為SurfaceHolder添加一個回調函數

surfaceHolder.addCallback(this);

setZOrderOnTop(true);//設置畫布 背景透明

surfaceHolder.setFormat(PixelFormat.TRANSLUCENT);

}

protected class NextFrameAction implements Runnable {

@Override

public void run() {

path.reset();

path1.reset();

path.addArc(rectF, 90.0f - 145.0f / 2.0f, 145.0f);

path1.addArc(rectF, 90.0f - 145.0f / 2.0f, 145.0f);

w += 5;

if (w >= (width - 5) * 2) {

w = 0;

}

for (int i = 5; i < width - 5; i++) {

path.lineTo(i, (float) (highLevel + waveAmplitude * Math.cos((float) (i + w) / (float) (width - 5) * Math.PI)));

path1.lineTo(i, (float) (highLevel - waveAmplitude * Math.cos((float) (i + w) / (float) (width - 5) * Math.PI)));

}

path.close();

path1.close();

Draw();

}

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

init();

}

protected void Draw() {

canvas = surfaceHolder.lockCanvas();

canvas.drawColor(Color.WHITE);

canvas.drawCircle(width / 2, height / 2, width / 2 - 5, paint2);

canvas.drawArc(rectF,90.0f-145.0f/2.0f,145.0f,false,paint);

canvas.drawPath(path, paint);

canvas.drawPath(path1, paint3);

surfaceHolder.unlockCanvasAndPost(canvas);

}

@Override

public void surfaceCreated(SurfaceHolder holder) {

ScheduledExecutorService executorService= new ScheduledThreadPoolExecutor(1);

NextFrameAction nextFrameAction=new NextFrameAction();

executorService.scheduleAtFixedRate(nextFrameAction, 4, 4, TimeUnit.MILLISECONDS);

}

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

}

}

效果圖：

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