我使用图表引擎成功显示图表，但遇到以下问题：
- 我无法减小图表大小。
- 图表在屏幕上移动，但我不希望这样。
- 我想在屏幕底部再显示一张图像，但这里的图表显示在屏幕中间。我只想在图像的顶部和下面显示图表（如何设置边距）。
请任何人都可以帮助我。提前致谢。
以下是我的代码：
public class MainActivity extends Activity {
private String[] mMonth = new String[] {
"Jan", "Feb" , "Mar", "Apr", "May", "Jun",
"Jul", "Aug" , "Sep", "Oct", "Nov", "Dec"
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
openChart();
}
private void openChart(){
double[] distribution = { 10,200,3,400,500,60} ;
String[] dis = { "10","200","13","400","500","60"} ;
// Color of each Pie Chart Sections
int[] colors = { Color.BLUE, Color.MAGENTA, Color.GREEN, Color.CYAN, Color.RED,
Color.YELLOW };
// Instantiating CategorySeries to plot Pie Chart
CategorySeries distributionSeries = new CategorySeries("Sample");
for(int i=0 ;i < distribution.length;i++){
// Adding a slice with its values and name to the Pie Chart
distributionSeries.add(dis[i],distribution[i]);
}
// Instantiating a renderer for the Pie Chart
DefaultRenderer defaultRenderer = new DefaultRenderer();
for(int i = 0 ;i<distribution.length;i++){
SimpleSeriesRenderer seriesRenderer = new SimpleSeriesRenderer();
seriesRenderer.setColor(colors[i]);
seriesRenderer.setDisplayChartValues(true);
// Adding a renderer for a slice
defaultRenderer.setShowLegend(false);
defaultRenderer.addSeriesRenderer(seriesRenderer);
int mar[]=defaultRenderer.getMargins();
System.out.println(mar);
}
// Creating an intent to plot bar chart using dataset and multipleRenderer
Intent intent = ChartFactory.getPieChartIntent(getBaseContext(), distributionSeries , defaultRenderer, "");
// Start Activity
startActivity(intent);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
