默认情况下,我们只需要添加数据,会自动添加坐标便签,我们也可以自己添加我们定制的标签。
1.静态添加
通过以下两句话添加。
graphView.setHorizontalLabels(new String[] {"2 days ago", "yesterday", "today", "tomorrow"});
graphView.setVerticalLabels(new String[] {"high", "middle", "low"});所有程序为:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GraphViewSeries exampleSeries = new GraphViewSeries(new GraphViewData[] {
new GraphViewData(1, 2.0d)
, new GraphViewData(2, 1.5d)
, new GraphViewData(3, 2.5d)
, new GraphViewData(4, 1.0d)
});
GraphView graphView = new LineGraphView(
this // context
, "GraphViewDemo" // heading
);
graphView.setHorizontalLabels(new String[] {"2 days ago", "yesterday", "today", "tomorrow"});
graphView.setVerticalLabels(new String[] {"high", "middle", "low"});
graphView.addSeries(exampleSeries); // data
LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
layout.addView(graphView);
}
}2.动态定制
你可以实现 CustomLabelFormatter 接口。然后方法setCustomLabelFormatter设置。
GraphView graphView = new LineGraphView(this, "example");
graphView.setCustomLabelFormatter(new CustomLabelFormatter() {
@Override
public String formatLabel(double value, boolean isValueX) {
if (isValueX) {
if (value < 5) {
return "small";
} else if (value < 15) {
return "middle";
} else {
return "big";
}
}
return null; // let graphview generate Y-axis label for us
}
});
3. 设置标签宽度 数目 表格颜色等方法
// set styles
graphView.getGraphViewStyle().setGridColor(Color.GREEN);
graphView.getGraphViewStyle().setHorizontalLabelsColor(Color.YELLOW);
graphView.getGraphViewStyle().setVerticalLabelsColor(Color.RED);
graphView.getGraphViewStyle().setTextSize(getResources().getDimension(R.dimen.big));
graphView.getGraphViewStyle().setNumHorizontalLabels(5);
graphView.getGraphViewStyle().setNumVerticalLabels(4);
graphView.getGraphViewStyle().setVerticalLabelsWidth(300);
本文详细介绍了如何在数据可视化过程中自定义图表的水平和垂直标签,包括静态添加和动态定制的方法,以及如何调整标签样式和数量。通过实例代码展示了如何使用GraphView进行配置。
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