在Activity中利用AChartEngine (ACE)显示图表.

在Activity中利用AChartEngine (ACE)显示图表.

基本思路: 设定数据,渲染器,并且显示到GraphicsView中 .

具体操作:

1.布局文件(itemchartactivity.xml)中增加:

<LinearLayout android:id="@+id/chart" 
 android:orientation="horizontal"
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:layout_weight="0.72"/>

2 .AndoridManifest.xml中增加:

<activity android:name="org.achartengine.GraphicalActivity" />

 3.itemChartActivity中增加:

private AbstractDemoChart mChart; 
  private XYMultipleSeriesDataset mDataset;    //数据集
 private XYMultipleSeriesRenderer mRenderer;  //渲染器
 private GraphicalView mChartView; //显示图表
 private LinearLayout layout; //用于绑定图表控件。

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.itemchartactivity); 
        
        mChart = new AbstractDemoChart(this); 
        
      /******* 1.构建数据. ********/
        //标题
        titles = new String[] { "New tickets","平均值"}; 
        //时间轴 , 数值  
        getDataXY(titles.length);    //通过访问数据库,给dates, values 赋值.
        mDataset = mChart.buildDateDataset(titles, dates, values);
        
        /*******2.构建显示时用的渲染图*/
        getRenderer();

        /*******3.在GraphicalView中显示.*/
        layout = (LinearLayout) findViewById(R.id.chart);       //绑定控件
        mChartView = ChartFactory.getTimeChartView(this, mDataset, mRenderer, "MM/dd/yyyy");
        layout.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));