android - 如何使用achartengine更改图形的背景颜色

Question

我使用achartengine实现了Line图。但我想改变线图背景颜色。有人建议使用以下代码来更改背景颜色。

mRenderer.setApplyBackgroundColor（真）; mRenderer.setBackgroundColor（Color.RED）;

但它不会改变整个背景。我想改变整个背景是否有可能？如果是，那么该怎么做请任何人都可以帮助我。下面的图片是前一个代码的输出。我想改变整个bgcolor（意味着剩下的黑色部分也变成白色）

Alinegraph.java

公共类ALinegraph扩展了Activity {

/ **首次创建活动时调用。 * /

@Override

public void onCreate（Bundle savedInstanceState）

{

    super.onCreate(savedInstanceState);      
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);   
    setContentView(R.layout.main);

    Button Linegraph = (Button) findViewById(R.id.Linegraph);
    Linegraph.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
              Linegraphpage ACTC = new Linegraphpage();
              Intent intent = ACTC.execute(ALinegraph.this);
              startActivity(intent);                  
        }});           
}

}

Linegraphpage.java

公共类Linegraphpage扩展了AbstractDemoChart

{

  /**
   * Returns the chart name.
   * 
   * @return the chart name
   */
  public String getName() {
    return "Average temperature";
  }

  /**
   * Returns the chart description.
   * 
   * @return the chart description
   */
  public String getDesc() {
    return "The average temperature in 4 Greek islands (line chart)";
  }

  /**
   * Executes the chart demo.
   * 
   * @param context the context
   * @return the built intent
   */
  public Intent execute(Context context) {
    String[] titles = new String[] { "Crete","Corfu"};
    List<double[]> x = new ArrayList<double[]>();
    for (int i = 0; i < titles.length; i++) {
      x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
    }
    List<double[]> values = new ArrayList<double[]>();
    values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 20.3 });
    values.add(new double[] { 100, 100, 100, 100, 100, 100, 100, 100, 100, 100 });

    int[] colors = new int[] { Color.CYAN,Color.GREEN};
    PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE,PointStyle.POINT};
    XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles);
    int length = renderer.getSeriesRendererCount();
    for (int i = 0; i < length; i++) {
      ((XYSeriesRenderer) renderer.getSeriesRendererAt(i)).setFillPoints(true);
    }
    setChartSettings(renderer, "", "", "price", 0, 12, 0, 190,
        Color.GREEN, Color.GREEN);
    renderer.setXLabels(10);
    renderer.setYLabels(7);    
    renderer.setShowGrid(false);
    renderer.setXLabelsAlign(Align.RIGHT);
    renderer.setYLabelsAlign(Align.RIGHT);
    renderer.setApplyBackgroundColor(true);
    renderer.setBackgroundColor(Color.WHITE);
    renderer.setZoomButtonsVisible(true);
    renderer.setPanLimits(new double[] { -10, 20, -10, 40 });
    renderer.setZoomLimits(new double[] { -10, 20, -10, 40 });

    Intent intent = ChartFactory.getLineChartIntent(context, buildDataset(titles, x, values),
        renderer, "");
    return intent;
  }

}

更新图片

Answer 1

你还应该设置margincolor：

mRenderer.setApplyBackgroundColor(true);
mRenderer.setBackgroundColor(Color.RED);
mRenderer.setMarginsColor(Color.RED);

这样可以将图表背景的整个视图显示为红色。