Android仿水波纹流量球进度条控制器

package com.lgl.circleview;

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.os.Handler;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ProgressBar;

/**
 * 水波圆
 * 
 * @author lgl
 * 
 */
public class CircleView extends View {

 private Context mContext;

 private int mScreenWidth;
 private int mScreenHeight;

 private Paint mRingPaint;
 private Paint mCirclePaint;
 private Paint mWavePaint;
 private Paint linePaint;
 private Paint flowPaint;
 private Paint leftPaint;

 private int mRingSTROKEWidth = 15;
 private int mCircleSTROKEWidth = 2;
 private int mLineSTROKEWidth = 1;

 private int mCircleColor = Color.WHITE;
 private int mRingColor = Color.WHITE;
 private int mWaveColor = Color.WHITE;

 private Handler mHandler;
 private long c = 0L;
 private boolean mStarted = false;
 private final float f = 0.033F;
 private int mAlpha = 50;// 透明度
 private float mAmplitude = 10.0F; // 振幅
 private float mWaterLevel = 0.5F;// 水高(0~1)
 private Path mPath;

 // 绘制文字显示在圆形中间，只是我没有设置，我觉得写在布局上也挺好的
 private String flowNum = "";
 private String flowLeft = "还剩余";

 /**
  * @param context
  */
 public CircleView(Context context) {
  super(context);
  // TODO Auto-generated constructor stub
  mCOntext= context;
  init(mContext);
 }

 /**
  * @param context
  * @param attrs
  */
 public CircleView(Context context, AttributeSet attrs) {
  super(context, attrs);
  // TODO Auto-generated constructor stub
  mCOntext= context;
  init(mContext);
 }

 /**
  * @param context
  * @param attrs
  * @param defStyleAttr
  */
 public CircleView(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  // TODO Auto-generated constructor stub
  mCOntext= context;
  init(mContext);
 }

 public void setmWaterLevel(float mWaterLevel) {
  this.mWaterLevel = mWaterLevel;
 }

 private void init(Context context) {
  mRingPaint = new Paint();
  mRingPaint.setColor(mRingColor);
  mRingPaint.setAlpha(50);
  mRingPaint.setStyle(Paint.Style.STROKE);
  mRingPaint.setAntiAlias(true);
  mRingPaint.setStrokeWidth(mRingSTROKEWidth);

  mCirclePaint = new Paint();
  mCirclePaint.setColor(mCircleColor);
  mCirclePaint.setStyle(Paint.Style.STROKE);
  mCirclePaint.setAntiAlias(true);
  mCirclePaint.setStrokeWidth(mCircleSTROKEWidth);

  linePaint = new Paint();
  linePaint.setColor(mCircleColor);
  linePaint.setStyle(Paint.Style.STROKE);
  linePaint.setAntiAlias(true);
  linePaint.setStrokeWidth(mLineSTROKEWidth);

  flowPaint = new Paint();
  flowPaint.setColor(mCircleColor);
  flowPaint.setStyle(Paint.Style.FILL);
  flowPaint.setAntiAlias(true);
  flowPaint.setTextSize(36);

  leftPaint = new Paint();
  leftPaint.setColor(mCircleColor);
  leftPaint.setStyle(Paint.Style.FILL);
  leftPaint.setAntiAlias(true);
  leftPaint.setTextSize(36);

  mWavePaint = new Paint();
  mWavePaint.setStrokeWidth(1.0F);
  mWavePaint.setColor(mWaveColor);
  mWavePaint.setAlpha(mAlpha);
  mPath = new Path();

  mHandler = new Handler() {
   @Override
   public void handleMessage(android.os.Message msg) {
    if (msg.what == 0) {
     invalidate();
     if (mStarted) {
      // 不断发消息给自己，使自己不断被重绘
      mHandler.sendEmptyMessageDelayed(0, 60L);
     }
    }
   }
  };
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  int width = measure(widthMeasureSpec, true);
  int height = measure(heightMeasureSpec, false);
  if (width  0.5F) {
   startAngle = 360F - horiAngle;
   sweepAngle = 180F + 2 * horiAngle;
  } else {
   startAngle = horiAngle;
   sweepAngle = 180F - 2 * horiAngle;
  }

  canvas.drawLine(mScreenWidth * 3 / 8, mScreenHeight * 5 / 8,
    mScreenWidth * 5 / 8, mScreenHeight * 5 / 8, linePaint);

  float num = flowPaint.measureText(flowNum);
  canvas.drawText(flowNum, mScreenWidth * 4 / 8 - num / 2,
    mScreenHeight * 4 / 8, flowPaint);
  float left = leftPaint.measureText(flowLeft);
  canvas.drawText(flowLeft, mScreenWidth * 4 / 8 - left / 2,
    mScreenHeight * 3 / 8, leftPaint);

  // 如果未开始（未调用startWave方法）,绘制一个扇形
  if ((!mStarted) || (mScreenWidth == 0) || (mScreenHeight == 0)) {
   // 绘制,即水面静止时的高度
   RectF oval = new RectF(mScreenWidth / 4, mScreenHeight / 4,
     mScreenWidth * 3 / 4, mScreenHeight * 3 / 4);
   canvas.drawArc(oval, startAngle, sweepAngle, false, mWavePaint);
   return;
  }
  // 绘制,即水面静止时的高度
  // 绘制,即水面静止时的高度
  RectF oval = new RectF(mScreenWidth / 4, mScreenHeight / 4,
    mScreenWidth * 3 / 4, mScreenHeight * 3 / 4);
  canvas.drawArc(oval, startAngle, sweepAngle, false, mWavePaint);

  if (this.c >= 8388607L) {
   this.c = 0L;
  }
  // 每次onDraw时c都会自增
  c = (1L + c);
  float f1 = mScreenHeight * (1.0F - (0.25F + mWaterLevel / 2))
    - mAmplitude;
  // 当前油量线的长度
  float waveWidth = (float) Math.sqrt(mScreenWidth * mScreenWidth / 16
    - centerOffset * centerOffset);
  // 与圆半径的偏移量
  float offsetWidth = mScreenWidth / 4 - waveWidth;

  int top = (int) (f1 + mAmplitude);
  mPath.reset();
  // 起始振动X坐标，结束振动X坐标
  int startX, endX;
  if (mWaterLevel > 0.50F) {
   startX = (int) (mScreenWidth / 4 + offsetWidth);
   endX = (int) (mScreenWidth / 2 + mScreenWidth / 4 - offsetWidth);
  } else {
   startX = (int) (mScreenWidth / 4 + offsetWidth - mAmplitude);
   endX = (int) (mScreenWidth / 2 + mScreenWidth / 4 - offsetWidth + mAmplitude);
  }
  // 波浪效果
  while (startX  CREATOR = new Parcelable.Creator() {
   public SavedState createFromParcel(Parcel in) {
    return new SavedState(in);
   }

   public SavedState[] newArray(int size) {
    return new SavedState[size];
   }
  };
 }

}

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>


 

 

 

 

 mCircleView = (CircleView) findViewById(R.id.wave_view);
  // 设置多高，float，0.1-1F
  mCircleView.setmWaterLevel(0.1F);
  // 开始执行
  mCircleView.startWave();

别忘了activity销毁的时候把它回收哦
@Override
 protected void onDestroy() {
  // TODO Auto-generated method stub
  mCircleView.stopWave();
  mCircleView = null;
  super.onDestroy();
 }

setOnSeekBarChangeListener来监听，这样我们就要复写他的三个方法，这里我们只要用到一个
public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    //跟随进度条滚动
    mCircleView.setmWaterLevel((float) progress / 100);
    }

 //创建一个消息
    Message message = new Message();
    Bundle bundle = new Bundle();
    //put一个int值
    bundle.putInt("progress", progress);
    //装载
    message.setData(bundle);
    //发送消息
    handler.sendMessage(message);
    //创建表示
    message.what = 1;

 private Handler handler = new Handler() {
  public void handleMessage(android.os.Message msg) {
   if (msg.what == 1) {
    int num = msg.getData().getInt("progress");
    Log.i("num", num + "");
    power.setText((float) num / 100 * max + "M/" + max + "M");
   }
  }
 };

package com.lgl.circleview;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends Activity {

 private CircleView mCircleView;
 private SeekBar mSeekBar;
 private TextView power;
 private int max = 1024;
 private int min = 102;

 private Handler handler = new Handler() {
 public void handleMessage(android.os.Message msg) {
  if (msg.what == 1) {
  int num = msg.getData().getInt("progress");
  Log.i("num", num + "");
  power.setText((float) num / 100 * max + "M/" + max + "M");
  }
 }
 };

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 getActionBar().hide();
 setContentView(R.layout.activity_main);

 power = (TextView) findViewById(R.id.power);
 power.setText(min + "M/" + max + "M");

 mCircleView = (CircleView) findViewById(R.id.wave_view);
 // 设置多高，float，0.1-1F
 mCircleView.setmWaterLevel(0.1F);
 // 开始执行
 mCircleView.startWave();

 mSeekBar = (SeekBar) findViewById(R.id.seekBar);
 mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
  @Override
  public void onProgressChanged(SeekBar seekBar, int progress,
   boolean fromUser) {
  mCircleView.setmWaterLevel((float) progress / 100);
  // 创建一个消息
  Message message = new Message();
  Bundle bundle = new Bundle();
  // put一个int值
  bundle.putInt("progress", progress);
  // 装载
  message.setData(bundle);
  // 发送消息
  handler.sendMessage(message);
  // 创建表示
  message.what = 1;
  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {

  }

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {

  }
 });
 }

 @Override
 protected void onDestroy() {
 // TODO Auto-generated method stub
 mCircleView.stopWave();
 mCircleView = null;
 super.onDestroy();
 }
}