import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.View;
import com.lidroid.xutils.util.LogUtils;
/**
* Created by yuLook on 2016/4/7.
* 动画效果是线一点点画出来的 而不是一条线一条线直接显示出来的
*/
public class BrokenLineView extends View {
private String price1,price2,price3,price4,price5,price6,price7;
private String maxPrice,minPrice;
private int wide=0,high=0;
public BrokenLineView(Context context) {
super(context);
}
public BrokenLineView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public BrokenLineView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
/**七个价格坐标点*/
public void setSevenPrice(String price1,String price2,String price3,String price4,String price5,String price6,String price7){
this.price1=price1;
this.price2=price2;
this.price3=price3;
this.price4=price4;
this.price5=price5;
this.price6=price6;
this.price7=price7;
}
/**Y轴最大值最小值*/
public void setMaxMinPrice(String maxPrice,String minPrice){
this.maxPrice=maxPrice;
this.minPrice=minPrice;
}
/**获得宽高*/
public void setWideHigh(int wide,int high){
this.wide=wide;
this.high=high;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint p = new Paint();
p.setStrokeWidth((float) 2.0);
p.setAntiAlias(true);// 设置画笔的锯齿效果
p.setColor(getResources().getColor(R.color.red));
if(wide>0){
if(time<=5&&time>0){
double s_y = getRoundY(price1);
double e_y = getRoundY(price2);
double a=(s_y-e_y)/5;
double b=s_y-a*time;
canvas.drawLine(0,(float) getRoundY(price1), wide/30*time,(float) b, p);
}else if(time>5&&time<=10){
double s_y = getRoundY(price2);
double e_y = getRoundY(price3);
double a=(s_y-e_y)/5;
double b=s_y-a*(time-5);
canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
canvas.drawLine(wide/6, (float) getRoundY(price2), wide/6+(wide/6)*(time-5)/5, (float) b, p);
}else if(time>10&&time<=15){
double s_y = getRoundY(price3);
double e_y = getRoundY(price4);
double a=(s_y-e_y)/5;
double b=s_y-a*(time-10);
canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
canvas.drawLine(wide/6, (float) getRoundY(price2), wide/3, (float) getRoundY(price3), p);
canvas.drawLine(wide/3, (float) getRoundY(price3), wide/3+(wide/6)*(time-10)/5, (float) b, p);
}else if(time>15&&time<=20){
double s_y = getRoundY(price4);
double e_y = getRoundY(price5);
double a=(s_y-e_y)/5;
double b=s_y-a*(time-15);
canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
canvas.drawLine(wide/6, (float) getRoundY(price2), wide/3, (float) getRoundY(price3), p);
canvas.drawLine(wide/3, (float) getRoundY(price3), wide/2, (float) getRoundY(price4), p);
canvas.drawLine(wide/2, (float) getRoundY(price4), wide/2+(wide/6)*(time-15)/5, (float) b, p);
}else if(time>20&&time<=25){
double s_y = getRoundY(price5);
double e_y = getRoundY(price6);
double a=(s_y-e_y)/5;
double b=s_y-a*(time-20);
canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
canvas.drawLine(wide/6, (float) getRoundY(price2), wide/3, (float) getRoundY(price3), p);
canvas.drawLine(wide/3, (float) getRoundY(price3), wide/2, (float) getRoundY(price4), p);
canvas.drawLine(wide/2, (float) getRoundY(price4), wide/6*4, (float) getRoundY(price5), p);
canvas.drawLine(wide/6*4,(float) getRoundY(price5), wide/6*4+(wide/6)*(time-20)/5, (float) b, p);
}else if(time>25){
double s_y = getRoundY(price6);
double e_y = getRoundY(price7);
double a=(s_y-e_y)/5;
double b=s_y-a*(time-25);
canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
canvas.drawLine(wide/6, (float) getRoundY(price2), wide/3, (float) getRoundY(price3), p);
canvas.drawLine(wide/3, (float) getRoundY(price3), wide/2, (float) getRoundY(price4), p);
canvas.drawLine(wide/2, (float) getRoundY(price4), wide/6*4, (float) getRoundY(price5), p);
canvas.drawLine(wide/6*4,(float) getRoundY(price5), wide/6*5, (float) getRoundY(price6), p);
canvas.drawLine(wide/6*5,(float) getRoundY(price6), wide/6*5+(wide/6)*(time-25)/5, (float) b, p);
}
// canvas.drawLine(0,(float) getRoundY(price1), wide/6, (float) getRoundY(price2), p);
// canvas.drawLine(wide/6, (float) getRoundY(price2), wide/3, (float) getRoundY(price3), p);
// canvas.drawLine(wide/3, (float) getRoundY(price3), wide/2, (float) getRoundY(price4), p);
// canvas.drawLine(wide/2, (float) getRoundY(price4), wide/6*4, (float) getRoundY(price5), p);
// canvas.drawLine(wide/6*4,(float) getRoundY(price5), wide/6*5, (float) getRoundY(price6), p);
// canvas.drawLine(wide/6*5,(float) getRoundY(price6), wide, (float) getRoundY(price7), p);
}
}
//获得Y轴坐标点
private double getRoundY(String str){
double d_max = Double.parseDouble(maxPrice);
double d_min = Double.parseDouble(minPrice);
//return ((double) high)-((Double.parseDouble(str)-d_min)/(d_max-d_min))*high;
return ((Double.parseDouble(str)-d_min)/(d_max-d_min))*high;
}
//动画异步任务
private int time=0;
public class task extends AsyncTask{
private Handler handler;
public task(Handler handler){
this.handler=handler;
}
@Override
protected Object doInBackground(Object[] params) {
for(int i=1;i<31;i++){
try {
time=i;
handler.sendEmptyMessage(1);
Thread.sleep((long) (600/30));
}catch (Exception p){
p.printStackTrace();
}
}
handler.sendEmptyMessage(2);
return null;
}
}
//接受消息刷新界面
private Handler handler=new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what){
case 1:
invalidate();
break;
case 2:
if(a!=null){
a.cancel(true);
a=null;
}
break;
}
}
};
private AsyncTask a;
//开始动画
public void start(){
a=new task(handler);
a.execute();
}
//手动结束动画
public void stop(){
if(a!=null){
a.cancel(true);
a=null;
}
time=0;
invalidate();
}
}
如何使用
//设置最大值最小值
view.setMaxMinPrice("2.5","3.5");
//设置把view自身的宽高传进去
view.setWideHigh(view.getWidth(),view.getHeight());
//七个点的
view.setSevenPrice("2.6","2.7","3.0","2.8","3.2","3.1","3.0");
//开始动画
view.start();