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android自定义折线图
BrokenLine控件：
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PathEffect;
import android.graphics.Shader;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import com.qianhua.healthy_brain.R;
/**
* 线框图
*
* @author Administrator
*
*/
public class BrokenLine extends View {
private List<Integer> milliliter;
private float tb;
private float interval_left_right;
private float interval_left;
private float margin_bottom;
private Paint paint_date, paint_brokenLine, paint_dottedline,
paint_brokenline_big, framPanint;
private int time_index;
private Bitmap bitmap_point;
private Path path;
private float dotted_text;
public float getDotted_text() {
return dotted_text;
}
public void setDotted_text(float dotted_text) {
this.dotted_text = dotted_text;
}
private int fineLineColor = 0x5faaaaaa; // 灰色
private int blueLineColor = 0xff00ffff; // 蓝色
private int orangeLineColor = 0xffd56f2b; // 橙色
public BrokenLine(Context context, List<Integer> milliliter) {
super(context);
init(milliliter);
}
public void init(List<Integer> milliliter) {
if (null == milliliter || milliliter.size() == 0)
return;
this.milliliter = delZero(milliliter);
Resources res = getResources();
tb = res.getDimension(R.dimen.historyscore_tb);
interval_left_right = tb * 5.0f;
interval_left = tb * 0.5f;
margin_bottom=8*tb * 0.2f;
paint_date = new Paint();
paint_date.setStrokeWidth(tb * 0.1f);
paint_date.setTextSize(tb * 1.2f);
paint_date.setColor(fineLineColor);
paint_brokenLine = new Paint();
paint_brokenLine.setStrokeWidth(tb * 0.1f);
paint_brokenLine.setColor(blueLineColor);
paint_brokenLine.setAntiAlias(true);
paint_dottedline = new Paint();
paint_dottedline.setStyle(Paint.Style.STROKE);
paint_dottedline.setColor(fineLineColor);
paint_brokenline_big = new Paint();
paint_brokenline_big.setStrokeWidth(tb * 0.2f);
paint_brokenline_big.setColor(fineLineColor);
paint_brokenline_big.setAntiAlias(true);
framPanint = new Paint();
framPanint.setAntiAlias(true);
framPanint.setStrokeWidth(2f);
path = new Path();
bitmap_point = BitmapFactory.decodeResource(getResources(),
R.drawable.icon_point_blue);
setLayoutParams(new LayoutParams(
(int) (this.milliliter.size() * interval_left_right),
LayoutParams.MATCH_PARENT));
}
/**
* 移除左右为零的数据
*
* @return
*/
public List<Integer> delZero(List<Integer> milliliter) {
List<Integer> list = new ArrayList<Integer>();
int sta = 0;
int end = 0;
for (int i = 0; i < milliliter.size(); i++) {
if (milliliter.get(i) != 0) {
sta = i;
break;
}
}
for (int i = milliliter.size() - 1; i >= 0; i--) {
if (milliliter.get(i) != 0) {
end = i;
break;
}
}
for (int i = 0; i < milliliter.size(); i++) {
if (i >= sta && i <= end) {
list.add(milliliter.get(i));
}
}
time_index = sta;
// dotted_text = ((Collections.max(milliliter) - Collections .min(milliliter)) / 12.0f * 5.0f);
return list;
}
protected void onDraw(Canvas c) {
if (null == milliliter || milliliter.size() == 0)
return;
drawStraightLine(c);
drawBrokenLine(c);
drawDate(c);
}
/**
* 绘制竖线
*
* @param c
*/
public void drawStraightLine(Canvas c) {
int count_line = 0;
for (int i = 0; i < milliliter.size(); i++) {
if (i==0) {//绘制Y轴
c.drawLine(interval_left_right * i, 0, interval_left_right * i, getHeight() - margin_bottom, paint_date);
for (int j = 0; j <10; j++) {
c.drawText(String.valueOf(10*(j+1)), 0 ,(getHeight()-margin_bottom)/10*(10-(j+1)), paint_date);
if (j==5){//绘制虚线
paint_dottedline.setColor(orangeLineColor);
Path path = new Path();
path.moveTo(0, (getHeight()-margin_bottom)/10*(10-(j+1)));
path.lineTo(getWidth(), (getHeight()-margin_bottom)/10*(10-(j+1)));
PathEffect effects = new DashPathEffect(new float[] { tb * 0.3f,
tb * 0.3f, tb * 0.3f, tb * 0.3f }, tb * 0.1f);
paint_dottedline.setPathEffect(effects);
c.drawPath(path, paint_dottedline);
}
}
continue;
}
//绘制竖线 连续四条为一组
paint_dottedline.setColor(fineLineColor);
if (count_line == 0) {
c.drawLine(interval_left_right * i, 0, interval_left_right * i, getHeight() - margin_bottom, paint_date);
}
if (count_line == 2) {
c.drawLine(interval_left_right * i, tb * 1.5f, interval_left_right * i, getHeight() - margin_bottom, paint_date);
}
if (count_line == 1 || count_line == 3) {
Path path = new Path();
path.moveTo(interval_left_right * i, tb * 1.5f);
path.lineTo(interval_left_right * i, getHeight() - margin_bottom);
PathEffect effects = new DashPathEffect(new float[] { tb * 0.3f, tb * 0.3f, tb * 0.3f, tb * 0.3f }, tb * 0.1f);
paint_dottedline.setPathEffect(effects);
c.drawPath(path, paint_dottedline);
}
count_line++;
if (count_line >= 4) {
count_line = 0;
}
}
//绘制X轴
c.drawLine(0, getHeight() - margin_bottom, getWidth(), getHeight() - margin_bottom, paint_brokenline_big);
}
/**
* 绘制折线
*
* @param c
*/
public void drawBrokenLine(Canvas c) {
int index = 0;
float temp_x = 0;
float temp_y = 0;
// float base = (getHeight() - tb * 3.0f) / (Collections.max(milliliter) - Collections.min(milliliter));
float base = (getHeight() - margin_bottom) / 100;
Shader mShader = new LinearGradient(0, 0, 0, getHeight(), new int[] {
Color.argb(100, 0, 255, 255), Color.argb(45, 0, 255, 255),
Color.argb(10, 0, 255, 255) }, null, Shader.TileMode.CLAMP);
framPanint.setShader(mShader);
for (int i = 0; i < milliliter.size() - 1; i++) {
Log.e("i", ""+milliliter.get(i));
float x1 = interval_left_right * i;
float y1 = getHeight() - margin_bottom - (base * milliliter.get(i));
float Y1 = milliliter.get(i);
float x2 = interval_left_right * (i + 1);
float y2 = getHeight() - margin_bottom - (base * milliliter.get(i + 1));
float Y2 = milliliter.get(i+1);
if ((int) (base * milliliter.get(i + 1)) == 0 && index == 0) {
index++;
temp_x = x1;
temp_y = y1;
}
if ((int) (base * milliliter.get(i + 1)) != 0 && index != 0) {
index = 0;
x1 = temp_x;
y1 = temp_y;
}
paint_date.setColor(orangeLineColor);
if (i==0) c.drawText(String.valueOf(Y1), x1, y1, paint_date);//绘出第一个值的大小
if (index == 0) {
c.drawText(String.valueOf(Y2), x2, y2, paint_date);//绘出第i+1个值的大小
c.drawLine(x1, y1, x2, y2, paint_brokenLine);
path.lineTo(x1, y1);
if (i != 0)
c.drawBitmap(bitmap_point,
x1 - bitmap_point.getWidth() / 2,
y1 - bitmap_point.getHeight() / 2, null);
if (i == milliliter.size() - 2) {
path.lineTo(x2, y2);
path.lineTo(x2, getHeight());
path.lineTo(0, getHeight());
path.close();
c.drawPath(path, framPanint);
c.drawBitmap(bitmap_point,
x2 - bitmap_point.getWidth() / 2,
y2 - bitmap_point.getHeight() / 2, null);
}
}
}
paint_date.setColor(fineLineColor);
}
/**
* 绘制时间
*
* @param c
*/
public void drawDate(Canvas c) {
Date date=new Date();//取时间
Calendar calendar =new GregorianCalendar();
calendar.setTime(date);
SimpleDateFormat dateFormat=new SimpleDateFormat("MM-dd");
String[] dates=new String[milliliter.size()];
for (int i = 0; i < milliliter.size(); i++) {
calendar.add(calendar.DATE,1);//把日期往后增加一天.整数往后推,负数往前移动
date=calendar.getTime(); //这个时间就是日期往后推一天的结果
dates[i]=dateFormat.format(date).toString();
}
for (int i = 0; i < milliliter.size(); i += 1) {
paint_date.setStrokeWidth(tb * 2.8f);
c.drawText(dates[i], interval_left_right * i ,getHeight(), paint_date);
}
}
}
Activity:
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.RelativeLayout;
import com.qianhua.healthy_brain.R;
import com.qianhua.healthy_brain.widget.BrokenLine;
public class TrainResultActivity extends Activity {
RelativeLayout linear;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.train_result);
List<Integer> lists = new ArrayList<Integer>();//线性图 范围0-100
for (int i = 0; i < 48; i++) {
if (i < 8 || i == 28 || i == 12 || i == 18 || i == 20 || i == 30
|| i == 34) {
lists.add(0);
} else {
// int item=getRandom(0, 100);
// Log.w(""+i, ""+item);
lists.add(getRandom(0, 100));
}
}
linear= (RelativeLayout) findViewById(R.id.linear);
linear.addView(new BrokenLine(this,lists));
}
public int getRandom(int min,int max){
return (int) Math.round(Math.random()*(max-min)+min);
}
}
xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f4f4f7"
android:orientation="vertical" >
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="10dp"
android:scrollbars="none" >
<RelativeLayout
android:id="@+id/linear"
android:layout_marginTop="30dp"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</RelativeLayout>
</HorizontalScrollView>
</LinearLayout>
</LinearLayout>
参考：http://www.apkbus.com/forum.php?mod=viewthread&tid=158365&extra=page%3D1
android自定义折线图
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