Android 上自定義的複式折線圖(一)

騷劍客發表於2016-05-31
Android

轉發請註明出處:http://blog.csdn.net/qq_30552993/article/details/51546919

Android 上自定義的複式折線圖(二)

Android 上自定義的複式折線圖(三)

這裡也給出後續的兩篇文章

最近公司想做一個表格統計圖,而且要符合可以多條折線的那種,自己也是翻閱了好多資料也沒有找到很合適的一種,後來果斷決定還是自己定義一個咯,下面先附上效果圖.

這裡有三條折線,其實裡面是有兩個列表:一個是管顏色的,另一個是管折線上的資料.同時這裡的控制元件外面也包了一個HorizontalScrollView,當超過螢幕時就可以進行水平滾動.而且這裡的控制元件LineView也提供了很過設定屬性的方法.

轉發請註明出處: http://blog.csdn.net/qq_30552993/article/details/51546919

其實在這裡之前也有很多好有的圖表框架,這裡我列舉幾個在github上面比較好的:

MPAndroidChart:      https://github.com/PhilJay/MPAndroidChart
hellocharts-android: https://github.com/lecho/hellocharts-android
XCL-Charts:              https://github.com/xcltapestry/XCL-Charts
Android-Charts:        https://github.com/limccn/Android-Charts
那這裡或許有些人就奇怪了,那你都說這裡的框架好用,那你為什麼不用.其實東西好用可是也有不合適自己的對吧!所以自己就自定義一個咯,就是這麼任性.

LineView.java

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PathEffect;
import android.util.AttributeSet;
import android.view.View;

import java.util.ArrayList;

@SuppressLint("DrawAllocation")
public class LineView extends View {

    private static final String TAG = "LineView";
    // 預設邊距
    private int Margin = 40;
    // 原點座標
    private int Xpoint;
    private int Ypoint;

    // X,Y軸的單位長度,即表格中的正方形的寬高
    private int Yscale = 32;
    private int Xscale = Yscale * 2;

    //是否顯示錶格
    private boolean isShowGrid = false;
    //是否展示表格為虛線
    private boolean isDottedLine = false;

    // X,Y軸 線的顏色
    private int XYColor = Color.WHITE;
    // X軸字型的顏色
    private int XTextColor = Color.WHITE;
    // Y軸字型的顏色
    private int YTextColor = Color.WHITE;
    // 表格的顏色
    private int GridColor = Color.WHITE;
    // 預設折線資料的顏色
    private int DataColor = Color.WHITE;

    private int XTextSize = 16;
    private int YTextSize = 16;

    // X軸上面的顯示文字
    private ArrayList<String> XLabel;
    // Y軸上面的顯示文字
    private ArrayList<String> YLabel;

    private int left = 0; // Y軸與Y軸上的文字的距離
    private int bottom = 0; //X軸與X軸上的文字的距離

    // 折線資料列表
    private ArrayList<ArrayList<Integer>> dataLists;
    //折線顏色列表
    private ArrayList<Integer> dataColorList;

    // 單前資料
    private ArrayList<Integer> dataList;
    private int dataColor;

    public LineView(Context context) {
        super(context);
    }

    public LineView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setXYColor(int XYColor) {
        this.XYColor = XYColor;
    }

    public void setXTextColor(int XTextColor) {
        this.XTextColor = XTextColor;
    }

    public void setYTextColor(int YTextColor) {
        this.YTextColor = YTextColor;
    }

    public void setGridColor(int gridColor) {
        this.GridColor = gridColor;
    }

    public void setDataColor(int dataColor) {
        this.DataColor = dataColor;
    }

    public void setDataColorList(ArrayList<Integer> dataColorList) {
        this.dataColorList = dataColorList;
    }

    public void setXTextSize(int XTextSize) {
        this.XTextSize = XTextSize;
    }

    public void setYTextSize(int YTextSize) {
        this.YTextSize = YTextSize;
    }

    public void setShowGrid(boolean isShowGrid) {
        this.isShowGrid = isShowGrid;
    }

    public void setDottedLine(boolean isDottedLine) {
        this.isDottedLine = isDottedLine;
    }

    public void setXYLabel(ArrayList<String> xlabel, ArrayList<String> ylabel) {
        this.XLabel = xlabel;
        this.YLabel = ylabel;
    }

    public void setScale(int scale) {
        this.Yscale = scale;
        this.Xscale = this.Yscale * 2;
    }

    public void setYToYTextSpace(int left) {
        this.left = left;
    }

    public void setXToXTextSpace(int bottom) {
        this.bottom = bottom;
    }

    public void setDataList(ArrayList<ArrayList<Integer>> dataLists) {
        this.dataLists = dataLists;
        postInvalidate();
    }

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (Yscale <= 24) {
            setMeasuredDimension(Xscale * (XLabel.size() + 2) + left, 
                                 Yscale * (YLabel.size() + 2) + bottom);
        } else {
            setMeasuredDimension(Xscale * (XLabel.size() + 1) + left, 
                                 Yscale * (YLabel.size() + 1) + bottom);
        }
    }

    // 初始化資料值
    public void init() {
        Xpoint = this.Margin + left;
        Ypoint = this.getHeight() - this.Margin - bottom;
        /*Xscale = (this.getWidth() - 2 * this.Margin) / (this.XLabel.size());
        Yscale = (this.getHeight() - 2 * this.Margin)  / (this.YLabel.size() - 1);*/
    }

    @Override
    protected void onDraw(Canvas canvas) {
        canvas.drawColor(Color.TRANSPARENT);
        Paint p1 = new Paint();
        p1.setStyle(Paint.Style.STROKE);
        p1.setAntiAlias(true);
        p1.setColor(XYColor);
        p1.setStrokeWidth(2);
        init();
        if (isShowGrid) {
            this.drawTable(canvas);
        } else {
            this.drawXLine(canvas, p1);
            this.drawYLine(canvas, p1);
        }
        if (dataLists != null) {
            for (int i = 0; i < dataLists.size(); i++) {
                this.drawData(canvas, i);
            }
        }
    }

    // 畫表格
    private void drawTable(Canvas canvas) {
        Paint paint = new Paint();
        paint.setStyle(Paint.Style.STROKE);
        paint.setColor(GridColor);
        Path path = new Path();
        if (isDottedLine) {
            PathEffect effects = new DashPathEffect(new float[]{5, 5, 5, 5}, 1);//畫虛線
            paint.setPathEffect(effects);
        }

        int startX = 0;
        int startY = 0;
        int stopX = 0;
        int stopY = 0;
        // 縱向線
        for (int i = 0; i <= XLabel.size(); i++) {
            startX = Xpoint + i * Xscale;
            startY = Ypoint;
            stopY = Ypoint - (this.YLabel.size() - 1) * Yscale;
            if (i != 0) {
                path.moveTo(startX - Xscale / 2, startY);
                path.lineTo(startX - Xscale / 2, stopY);
                canvas.drawPath(path, paint);
            }
            path.moveTo(startX, startY);
            path.lineTo(startX, stopY);
            canvas.drawPath(path, paint);
        }

        // 橫向線
        for (int i = 0; i < YLabel.size(); i++) {
            startX = Xpoint;
            startY = Ypoint - i * Yscale;
            stopX = Xpoint + (this.XLabel.size()) * Xscale;
            path.moveTo(startX, startY);
            path.lineTo(stopX, startY);
            canvas.drawPath(path, paint);
        }
    }

    //畫縱軸
    private void drawXLine(Canvas canvas, Paint p) {
        p.setColor(XYColor);
        float stopX = Xpoint;
        float stopY = Ypoint - Yscale * (YLabel.size() - 1);
        canvas.drawLine(Xpoint, Ypoint, stopX, stopY, p);
        // Y軸最後是否有箭頭
        canvas.drawLine(stopX, stopY, stopX - Xscale / 6, stopY + Yscale / 3, p);
        canvas.drawLine(stopX, stopY, stopX + Xscale / 6, stopY + Yscale / 3, p);
    }


    // 畫橫軸
    private void drawYLine(Canvas canvas, Paint p) {
        p.setColor(XYColor);
        float stopX = Xpoint + Xscale * XLabel.size();
        float stopY = Ypoint;
        canvas.drawLine(Xpoint, Ypoint, stopX, stopY, p);
        // X軸最後是否有箭頭
        canvas.drawLine(stopX, stopY, stopX - Xscale / 6, stopY - Yscale / 3, p);
        canvas.drawLine(stopX, stopY, stopX - Xscale / 6, stopY + Yscale / 3, p);
    }

    // 畫資料
    private void drawData(Canvas canvas, int pos) {
        dataList = dataLists.get(pos);
        dataColor = pos < dataColorList.size() ? dataColorList.get(pos) : DataColor;
        Paint p = new Paint();
        p.setAntiAlias(true);

        // 縱軸資料
        for (int i = 0; i < YLabel.size(); i++) {
            int startY = Ypoint - i * Yscale;
            p.setColor(YTextColor);
            p.setTextSize(XTextSize);
            canvas.drawText(this.YLabel.get(i), this.Margin / 4,
                    startY + this.Margin / 4, p);
        }

        //橫軸資料
        for (int i = 0; i < XLabel.size(); i++) {
            int startX = Xpoint + i * Xscale;
            p.setColor(XTextColor);
            p.setTextSize(YTextSize);
            canvas.drawText(this.XLabel.get(i), startX - this.Margin / 4 + Xscale / 2,
                    this.getHeight() - this.Margin / 4, p);
            p.setColor(dataColorList.size() > 0 ? dataColor : DataColor);
            canvas.drawCircle(startX + Xscale / 2, calY(dataList.get(i)), 4, p);

            if (i < XLabel.size() - 1) {
                canvas.drawLine(startX + Xscale / 2, calY(dataList.get(i)),
                        Xpoint + (i + 1) * Xscale + Xscale / 2, 
                        calY(dataList.get(i + 1)), p);
            }
        }
    }

    /**
     * @param y
     * @return
     */
    private int calY(int y) {
        int y0 = 0;
        int y1 = 0;
        //	Log.i("zzzz", "y:"+y);
        try {
            y0 = Integer.parseInt(YLabel.get(0));
            //		Log.i("zzzz", "y0"+y0);
            y1 = Integer.parseInt(YLabel.get(1));
            //		Log.i("zzzz","y1"+y1);
        } catch (Exception e) {
            //		Log.i("zzzz", "string changed is err");
            return 0;
        }
        try {
            //		Log.i("zzzz", "返回資料"+(Ypoint-(y-y0)*Yscale/(y1-y0)) );
            return Ypoint - ((y - y0) * Yscale / (y1 - y0));
        } catch (Exception e) {
            //	Log.i("zzzz", "return is err");
            return 0;
        }
    }

}

這裡先來一個列子,說明怎麼使用LineView

MainActivity.java

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;

import java.util.ArrayList;


public class MainActivity extends Activity {

    private LineView mSkinLineView;
    private ArrayList<Integer> colorList = new ArrayList<>();//折線的顏色列表
    private ArrayList<String> XLabel = new ArrayList<>(); //X軸上的標籤資料列表
    private ArrayList<String> YLabel = new ArrayList<>(); //Y軸上的標籤資料列表
    private ArrayList<ArrayList<Integer>> dataLists;//折線上的資料列表

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

    private void initViews() {
        colorList.add(getResources().getColor(R.color.using_before));
        colorList.add(getResources().getColor(R.color.using_after));
        for (int i = 0; i < 10; i++) {
            XLabel.add(String.valueOf(i));
        }
        for (int i = 0; i < 11; i++) {
            YLabel.add(String.valueOf(i * 10));
        }

        mSkinLineView = (LineView) findViewById(R.id.skinLineView);
        mSkinLineView.setDataColorList(colorList);
        mSkinLineView.setXYLabel(XLabel, YLabel); //設定設定X,Y軸的資料
        mSkinLineView.setShowGrid(true);//true是展示表格,false是顯示帶箭頭的X,Y軸
//        mSkinLineView.setDottedLine(true); // 表格展示微虛線
        mSkinLineView.setXYColor(Color.LTGRAY); // X,Y軸線與資料的顏色
        mSkinLineView.setGridColor(Color.LTGRAY);// 表格的顏色
       /* mSkinLineView.setScale(32);//表格中的正方形的單位,預設是32
        mSkinLineView.setXTextSize(30);  // X軸字型的顏色
        mSkinLineView.setYTextSize(30); // Y軸字型的顏色
        mSkinLineView.setXToXTextSpace(20);
        mSkinLineView.setYToYTextSpace(40);
        mSkinLineView.setXTextColor(Color.RED);
        mSkinLineView.setYTextColor(Color.RED);
        mSkinLineView.setDataColor(Color.BLUE);*/

        randSet();
        findViewById(R.id.resetBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                randSet();
            }
        });
    }

    private void randSet() {
        dataLists = new ArrayList<>();
        ArrayList<Integer> dataList1 = new ArrayList<Integer>();
        int random1 = (int) (Math.random() * 99 + 1);
        for (int i = 0; i < XLabel.size(); i++) {
            dataList1.add((int) (Math.random() * random1));
        }

        ArrayList<Integer> dataList2 = new ArrayList<Integer>();
        int random2 = (int) (Math.random() * 99 + 1);
        for (int i = 0; i < XLabel.size(); i++) {
            dataList2.add((int) (Math.random() * random2));
        }

        ArrayList<Integer> dataList3 = new ArrayList<Integer>();
        int random3 = (int) (Math.random() * 99 + 1);
        for (int i = 0; i < XLabel.size(); i++) {
            dataList3.add((int) (Math.random() * random3));
        }

        dataLists.add(dataList1);
        dataLists.add(dataList2);
        dataLists.add(dataList3);
        mSkinLineView.setDataList(dataLists);
    }
}
佈局檔案activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#0099FF"
    android:orientation="vertical">

    <HorizontalScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:scrollbars="none">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <sl.myapplication.LineView
                android:id="@+id/skinLineView"
                android:layout_width="match_parent"
                android:layout_height="200dip" />
        </LinearLayout>
    </HorizontalScrollView>

    <Button
        android:id="@+id/resetBtn"
        android:text="重新整理"
        android:textColor="@color/white"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

上面設計到的顏色XML,在res-->values的目錄下新增colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="white">#ffffff</color>
    <color name="using_before">#f6e749</color>
    <color name="using_after">#7ae6fe</color>
</resources>

資源下載:  http://download.csdn.net/detail/qq_30552993/9536724

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