我在 java 代码中创建了一个 LinearLayout，但我不知道如何添加图像背景。
这是我为 LinearLayout 编写的代码：
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/** Create a new layout to display the view */
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);
TextView variacion[];
try {
/** Handling XML */
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
/** Send URL to parse XML Tags */
URL sourceUrl = new URL("http://www.bovalpo.com/cgi-local/xml_bcv.pl?URL=75");
/** Create handler to handle XML Tags ( extends DefaultHandler ) */
MyXMLHandler myXMLHandler = new MyXMLHandler();
xr.setContentHandler(myXMLHandler);
xr.parse(new InputSource(sourceUrl.openStream()));
} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}
/** Get result from MyXMLHandler SitlesList Object */
sitesList = MyXMLHandler.sitesList;
/** Assign textview array lenght by arraylist size */
registro = new TextView[sitesList.getRegistro().size()];
// nemotecnico = new TextView[sitesList.getNemotecnico().size()];
variacion = new TextView[sitesList.getVariacion().size()];
//category = new TextView[sitesList.getName().size()];
/** Set the result text in textview and add it to layout */
for (int i = 0; i < sitesList.getRegistro().size(); i++) {
variacion[i] = new TextView(this);
variacion[i].setText(sitesList.getVariacion().get(i));
Pattern pattern = Pattern.compile("^\\+?[0-9]+([,\\.][0-9]*)?$");
Matcher matcher = pattern.matcher(sitesList.getVariacion().get(i));
if (!matcher.matches())
variacion[i].setTextColor(Color.parseColor("#ff0000"));
else
variacion[i].setTextColor(Color.parseColor("#008000"));
layout.addView(variacion[i]);
}
/** Set the layout view to display */
setContentView(layout);
}
}