afreechart Android的日食esample [英] afreechart Android eclipse esample

问题描述

我想使用AFreeChart在我的活动，以显示一个图表，我已签那么多文件扔互联网，但我没有发现任何完整的例子，我的意思是如何建立一个图表，并把它显示在我的布局后，我需要表现出来的抱怨GUI（同样的事情像一个形象在我的GUI），Y正在使用eclipse（安卓4.2）它。

I am trying to use AFreeChart to display a chart in my activity, I have checked so many documentation throw internet but I do not find any full example, I mean how to build a chart and to show it after in my Layout, I need to show it whining an GUI (same thing like an image in my GUI), y am using eclipse (android 4.2) for it.

有谁知道如何在Android的使用AfreeChart？谢谢

Does anyone know how to use AfreeChart in android? Thanks

推荐答案

好吧，因为这是一个较早的帖子，我不知道你是否能找到这个问题的答案。这是需要做您的活动中显示图表AFREE什么。

Okay, since this is an older post I am not sure if you were able to find an answer for this question. This is what needs to be done to display a afree chart in your activity.

1. 创建扩展ImageView的，像blelow一些自定义视图

1. Create a custom view extending ImageView, something like blelow

public class ChartView extends ImageView
{
    private Bitmap              bitmap;
    private RectShape           rectArea;
    private Canvas              canvas;
    private AFreeChart          chart;

    public ChartView( Context context, AttributeSet attributeSet )
    {
        super(context, attributeSet);
    }

    public ChartView( Context context )
    {
        super(context);
        intChart();
    }

    private void intChart()
    {
        //Setting different width and height based on the orientation.
        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE)
        {
            bitmap = Bitmap.createBitmap(400, 200, Bitmap.Config.ARGB_8888);
            rectArea = new RectShape(0.0, 0.0, 400, 200);
        }
        else
        {
            bitmap = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
            rectArea = new RectShape(0.0, 0.0, 200, 200);
        }
    }

    public void drawChart( AFreeChart chart )
    {
        canvas = new Canvas(bitmap);
        this.chart = chart;             
        this.chart.draw(canvas, rectArea);
        setImageBitmap(bitmap);
    }

    @Override
    protected void onDraw( Canvas canvas )
    {
        super.onDraw(canvas);               
    }
}

创建活动，如下图所示，你都设置去。我假设你已经创建了AFreeChart对象被传递到视图。

Create an activity, as shown below and you all set to go. I assume that you have already created your AFreeChart object to be passed to the view.

    public class ChartActivity extends Activity
    {
        @Override
        protected void onCreate( Bundle savedInstanceState )
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.chart);

            ViewGroup viewGroup = (ViewGroup)getWindow().getDecorView().findViewById(android.R.id.content);

            ChartView chartView = new ChartView(this);

            chartView.drawChart(ChartFactory.createChart()/*Returns AFreechart object*/);       

            viewGroup.addView(chartView);

        }
    }

chart.xml

chart.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>

希望这有助于

这篇关于afreechart Android的日食esample的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！