Android自定义WaveView实现波浪进度效果

 * Created by LiuDong on 2016/12/22.
 * Email:15002102128@126.com
 */

public class WaveActivity extends Activity {
 LD_WaveView waveView;//方形
 LD_WaveView waveCircleView;//圆形
 private int progrees=0;//进度
 private Handler mHandler=new Handler(){
  @Override
  public void handleMessage(Message msg) {
   if (progrees==100) progrees=0;
   Log.i("progress",progrees+"");
   waveView.setmProgress(progrees++);
   waveCircleView.setmProgress(progrees++);
   mHandler.sendEmptyMessageDelayed(0,100);
  }
 };
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_wave);
  waveView= (LD_WaveView) findViewById(R.id.waveView);
  waveCircleView= (LD_WaveView) findViewById(R.id.waveViewCircle);
  mHandler.sendEmptyMessageDelayed(0,10);
 }
}

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/**
 * Created by LiuDong on 2016/12/23.
 * Email:15002102128@126.com
 */

public class LD_WaveView extends View {

 private int mProgress;//进度
 private int mTimeStep = 10;//时间间隔
 private int mSpeed = 5;//波单次移动的距离
 private int mViewHeight;//视图宽高
 private int mViewWidth;//视图宽度
 private int mLevelLine;// 基准线


 private int mWaveLength;//波长 暂定view宽度为一个波长
 private int mStrokeWidth;//园的线宽
 private RectF rectF;//圆环区域
 private int mWaveHeight;//波峰高度
 private int mLeftWaveMoveLength;//波平移的距离，用来控制波的起点位置
 private int mWaveColor;//波的颜色
 private Paint mPaint;//画笔
 private Paint mCirclePaint;//圆环画笔
 private Paint mBorderPaint;//边界画笔
 private int mBorderWidth=4;//边界宽度
 private Paint mTextPaint;//文字画笔
 private Path mPath;//绘画线
 private List mPoints;//点的集合
 private boolean isMeasure = false;//是否已测量过
 private boolean isCircle=false;//是否圆形默认false，可属性代码设置
 //处理消息
 private Handler handler = new Handler() {
  @Override
  public void handleMessage(Message msg) {

   initWaveMove();
  }
 };

 /**
  * 初始化波的移动
  */
 private void initWaveMove(){
  mLeftWaveMoveLength+=mSpeed;//波向右移动距离增加mSpeed;
  if (mLeftWaveMoveLength>=mWaveLength){//当增加到一个波长时回复到0
   mLeftWaveMoveLength=0;
  }
  invalidate();

 }
 public LD_WaveView(Context context) {
  this(context, null);
 }

 public LD_WaveView(Context context, AttributeSet attrs) {
  this(context, attrs, 0);
 }

 public LD_WaveView(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);

  getAttr(context, attrs, defStyleAttr);
  init();

 }

 /**
  * 初始化画笔
  */
 private void init() {
  mPoints = new ArrayList();
  //波浪轨迹画笔
  mPaint = new Paint();
  mPaint.setAntiAlias(true);
  mPaint.setColor(mWaveColor);
  mPaint.setStyle(Paint.Style.FILL_AND_STROKE);


  mPath = new Path();


  //文字画笔
  mTextPaint=new Paint();
  mTextPaint.setColor(Color.RED);
  mTextPaint.setTextAlign(Paint.Align.CENTER);
  mTextPaint.setTextSize(48);


  //圆环画笔
  mCirclePaint=new Paint();
  mCirclePaint.setAntiAlias(true);
  mCirclePaint.setColor(Color.WHITE);
  mCirclePaint.setStyle(Paint.Style.STROKE);
  //边界线画笔
  mBorderPaint=new Paint();
  mBorderPaint.setAntiAlias(true);
  mBorderPaint.setColor(mWaveColor);
  mBorderPaint.setStrokeWidth(mBorderWidth);
  mBorderPaint.setStyle(Paint.Style.STROKE);


 }

 /**
  * 获取自定义的属性值
  *
  * @param attrs
  */
 private void getAttr(Context context, AttributeSet attrs, int defStyle) {

  TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.LD_WaveView, defStyle, 0);

  mWaveColor = a.getColor(R.styleable.LD_WaveView_wave_color, Color.RED);
  isCircle=a.getBoolean(R.styleable.LD_WaveView_wave_circle,false);
  a.recycle();

 }


 /**
  *
  * @param widthMeasureSpec
  * @param heightMeasureSpec
  */
 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

  super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  if (!isMeasure&&Math.abs(getMeasuredHeight()-getMeasuredWidth())<50) {//只计算一次就够了 ，relativelayout的时候要绘制两次 加个宽高判断
   mViewHeight = getMeasuredHeight();
   mViewWidth = getMeasuredWidth();
   mLevelLine = mViewHeight; //初始化波的准位线  起始位视图最底部
   {
    mLevelLine = mViewHeight * (100-mProgress) / 100;
    if (mLevelLine <0) mLevelLine = 0;
   }
   //计算波峰值
   mWaveHeight = mViewHeight / 20;//波峰暂定为view高度的1/20，如果需要设置 可设置set方法赋值;
   mWaveLength = getMeasuredWidth();

   //计算所有的点 这里取宽度为整个波长 往左再延伸一个波长 两个波长则需要9个点
   for (int i = 0; i <9; i++) {
    int y = 0;
    switch (i % 4) {
     case 0:
      y = mViewHeight;
      break;
     case 1:
      y =mViewHeight+ mWaveHeight;
      break;
     case 2:
      y = mViewHeight;
      break;
     case 3:
      y = mViewHeight-mWaveHeight;
      break;
    }
    Point point = new Point(-mWaveLength + i * mWaveLength / 4, y);
    mPoints.add(point);
   }
   /**
    * 计算圆环宽度
    */
   int mIncircleRadius=mViewHeight=50)//如果进度达到50 颜色变为白色，没办法啊，进度在中间 不变颜色看不到
   mTextPaint.setColor(Color.WHITE);
  else
  mTextPaint.setColor(mWaveColor);
  canvas.drawText(progress,0,progress.length(),mViewWidth/2,mViewHeight/2+textHeight/2,mTextPaint);

  if (isCircle) {
   /**
    * 绘制圆环
    */

   canvas.drawArc(rectF, 0, 360, true, mCirclePaint);
   Paint circlePaint = new Paint();
   circlePaint.setStrokeWidth(5);
   circlePaint.setColor(Color.WHITE);
   circlePaint.setAntiAlias(true);
   circlePaint.setStyle(Paint.Style.STROKE);
   canvas.drawCircle(mViewWidth / 2, mViewHeight / 2, mViewHeight / 2, circlePaint);
   /**
    * 绘制边界
    */

   mBorderPaint.setStrokeWidth(mBorderWidth/2);
  canvas.drawCircle(mViewWidth/2,mViewHeight/2,mViewHeight/2-mBorderWidth/2,mBorderPaint);
  }else {
   /**
    * 绘制矩形边框
    */
   canvas.drawRect(0,0,mViewWidth,mViewHeight,mBorderPaint);
  }
  //
  handler.sendEmptyMessageDelayed(0,mTimeStep);
 }

 /**
  * 设置进度 基准线
  * @param mProgress
  */
 public void setmProgress(int mProgress) {
  this.mProgress = mProgress;
  mLevelLine=(100-mProgress)*mViewHeight/100;
 }

 /**
  * 设置是否为圆形
  * @param circle
  */
 public void setCircle(boolean circle) {
  isCircle = circle;
 }
}

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