事实证明,虽然没有直接的 API 调用 get installLocation
,但我也不必手动解析二进制 XML,因为所提供的XmlResourceParser
适用于它。
// Experimentally determined
private static final int auto = 0;
private static final int internalOnly = 1;
private static final int preferExternal = 2;
AssetManager am = createPackageContext(packageName, 0).getAssets();
XmlResourceParser xml = am.openXmlResourceParser("AndroidManifest.xml");
int eventType = xml.getEventType();
xmlloop:
while (eventType != XmlPullParser.END_DOCUMENT) {
switch (eventType) {
case XmlPullParser.START_TAG:
if (! xml.getName().matches("manifest")) {
break xmlloop;
} else {
attrloop:
for (int j = 0; j < xml.getAttributeCount(); j++) {
if (xml.getAttributeName(j).matches("installLocation")) {
switch (Integer.parseInt(xml.getAttributeValue(j))) {
case auto:
// Do stuff
break;
case internalOnly:
// Do stuff
break;
case preferExternal:
// Do stuff
break;
default:
// Shouldn't happen
// Do stuff
break;
}
break attrloop;
}
}
}
break;
}
eventType = xml.nextToken();
}
呃,我猜里面switch
有一个case
可能应该只是一个if
. 那好吧。你明白了。