wave2（修改版）

效果图同上：

（修复了bug）

1. 不在setText中new Thread，而是直接让它实现ruunable接口

2. 在进入应用之后，按电源键让手机休眠，等一会再进去，水波纹会异常，这是由于线程一直在运行，会不断修改Delta和step的值，但是却没有重绘视图导致的。

3. 结合listivew使用以下。

package com.example.wavedemo;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.FontMetrics;
import android.graphics.Path;
import android.graphics.Rect;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;

/**
 * 水波纹数字
 * 
 * @author huozhenpeng
 * 
 */
public class WaveTextView extends View implements Runnable {
	private TextPaint textPaint;
	private TextPaint textPaint2;
	private int textSize = 200;
	private int textPaintWidth = 50;
	private int width;
	private int height;
	private int Delta;
	private int step;
	private Path path;
	private FontMetrics fontMetrics;
	private String text = "85";
	private int baseline;
	private int max;
	private float controlY1;// 两个控制点的纵坐标
	private float controlY2;
	private int fraction = 1;// 1或者-1
	private Rect bounds;

	public WaveTextView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init();
	}

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

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

	public void init() {

		textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
		textPaint.setColor(Color.parseColor("#0e92ca"));
		textPaint.setTextSize(textSize);
		textPaint.setStrokeWidth(textPaintWidth);
		textPaint.setTextAlign(Align.CENTER);
		fontMetrics = textPaint.getFontMetrics();

		textPaint2 = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
		textPaint2.setColor(Color.parseColor("#efefef"));
		textPaint2.setTextSize(textSize);
		textPaint2.setStrokeWidth(textPaintWidth);
		textPaint2.setTextAlign(Align.CENTER);
		path = new Path();
		bounds = new Rect();
		textPaint.getTextBounds(text, 0, text.length(), bounds);

	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		if (MeasureSpec.getMode(widthMeasureSpec) != MeasureSpec.EXACTLY) {
			widthMeasureSpec = MeasureSpec.makeMeasureSpec(
					(int) textPaint.measureText(text), MeasureSpec.EXACTLY);
		}
		if (MeasureSpec.getMode(heightMeasureSpec) != MeasureSpec.EXACTLY) {
			heightMeasureSpec = MeasureSpec.makeMeasureSpec(
					(int) (bounds.height()), MeasureSpec.EXACTLY);

		}
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);

	}

	@Override
	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		super.onSizeChanged(w, h, oldw, oldh);
		width = w;
		height = h;
		baseline = (int) ((fontMetrics.descent + fontMetrics.ascent) / 2);
		// max = (int) (Integer.parseInt(text) / 100.0f * height);
	}

	@Override
	protected void onDraw(Canvas canvas) {
		Delta += 1;
		step += 1 * fraction;

		max = (int) (Integer.parseInt(text) / 100.0f * height);
		if (Delta >= max) {
			Delta = max;
		}
		path.reset();
		path.moveTo(0, 0);
		path.lineTo(width, 0);
		path.lineTo(width, height - Delta);
		controlY1 = step + (height - Delta);
		controlY2 = -step + (height - Delta);
		if (controlY1 - (height - Delta) >= height * 1.0f / 4) {
			fraction = -1;
		}
		if (controlY1 - (height - Delta) <= -height * 1.0f / 4) {
			fraction = 1;
		}
		path.cubicTo(width * 3.0f / 4, controlY1, width * 1.0f / 4, controlY2,
				0, height - Delta);
		Log.e("abc", "h:" + (height - Delta) + "controlY1:" + controlY1
				+ "controlY2:" + controlY2);
		path.close();
		canvas.drawColor(Color.parseColor("#ffffff"));
		canvas.drawText(text, width / 2, height / 2 - baseline, textPaint);
		canvas.save();
		canvas.clipPath(path);
		canvas.drawText(text, width / 2, height / 2 - baseline, textPaint2);
		canvas.restore();
		super.onDraw(canvas);
	}

	public void setText(int text) {
		this.text = text + "";
		Delta = 0;
		step = 0;
		fraction = 1;

	}

	@Override
	public void run() {
		while (true) {
			try {
				Log.e("abc", "running");
				Thread.sleep(20);
				// 这两行代码一定要放到onDraw中，要不然手机屏幕睡眠之后，线程还会走，但是不执行重绘操作，会导致Delta和step无限大和小
				// Delta += 1;
				// step += 1 * fraction;
				postInvalidate();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}

package com.example.wavedemo;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivityc extends Activity {

	private ListView listview;
	private MyAdapter1 adapter;
	private List lists;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_mainc);
		listview=(ListView) this.findViewById(R.id.listview);
		lists=new ArrayList();
		lists.add(new WaveBean("aaaaaaaaaaaa",90));
		lists.add(new WaveBean("bbbbbbbbbbbbb",80));
		lists.add(new WaveBean("ccccccccccc",70));
		lists.add(new WaveBean("dddddddddddddd",10));
		lists.add(new WaveBean("eeeeeeeeeeee",20));
		lists.add(new WaveBean("fffffffff",30));
		lists.add(new WaveBean("hhhhhhhhhh",40));
		lists.add(new WaveBean("iiiiiiiii",60));
		lists.add(new WaveBean("ggggggggggg",13));
		lists.add(new WaveBean("kkkkkkkkkkk",15));
		lists.add(new WaveBean("llllllllllll",24));
		lists.add(new WaveBean("mmmmmmmmmmm",27));
		lists.add(new WaveBean("nnnnnnnnnnnnnn",56));
		lists.add(new WaveBean("ooooooooooo",78));
		lists.add(new WaveBean("ppppppppppp",98));
		lists.add(new WaveBean("qqqqqqqqqqq",100));
		lists.add(new WaveBean("rrrrrrrrrrrr",0));
		lists.add(new WaveBean("ssssssssssssss",54));
		lists.add(new WaveBean("tttttttttttt",87));
		lists.add(new WaveBean("uuuuuuuuuuuu",54));
		lists.add(new WaveBean("vvvvvvvvvvvvv",3));
		lists.add(new WaveBean("wwwwwwwwwwwwww",67));
		lists.add(new WaveBean("xxxxxxxxxxxxxx",97));
		lists.add(new WaveBean("yyyyyyyyyyyyyyyy",4));
		lists.add(new WaveBean("zzzzzzzzzzzzzzz",50));
		adapter=new MyAdapter1(lists, this);
		listview.setAdapter(adapter);

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {

		return super.onOptionsItemSelected(item);
	}
	
	public void click(View view)
	{
	}

}

package com.example.wavedemo;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;


/**
 * Created by ${huozhenpeng} on 15/9/23.
 * Company : www.miduo.com
 */
public class MyAdapter1 extends BaseAdapter {

    private List  list=new ArrayList();
    private Context context;


    public MyAdapter1(List list,Context context) {
        this.context=context;
        this.list = list;
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;

        if(convertView==null)
        {
            convertView= LayoutInflater.from(context).inflate(R.layout.waveitem,null);
            holder=new ViewHolder();
            holder.textView= (TextView) convertView.findViewById(R.id.textview);
            holder.wavetext=(WaveTextView) convertView.findViewById(R.id.waveText);
            new Thread(holder.wavetext).start();
            convertView.setTag(holder);
        }
        else
        {
            holder= (ViewHolder) convertView.getTag();
        }
        holder.textView.setText(list.get(position).getText());
        if(holder.wavetext==null)
        {
        	Log.e("abc", "nullllllll");
        }
        holder.wavetext.setText(list.get(position).getData());
        return convertView;
    }

    class  ViewHolder
    {
        private TextView textView;
        private WaveTextView wavetext;
    }
}

package com.example.wavedemo;

import java.io.Serializable;

public class WaveBean implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String text;
	private int data;

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
	}

	public int getData() {
		return data;
	}

	public void setData(int data) {
		this.data = data;
	}

	@Override
	public String toString() {
		return "WaveBean [text=" + text + ", data=" + data + "]";
	}

	public WaveBean(String text, int data) {
		super();
		this.text = text;
		this.data = data;
	}
	

}