android如何获取到启动类的包和类路径

ArrayList<String> list = new ArrayList<String>();
private List<ResolveInfo> mApps;
private ResolveInfo info;
public void list() {
list.clear();
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
mApps = getPackageManager().queryIntentActivities(mainIntent, 0);
for (int i = 0; i < mApps.size(); i++) {
info = mApps.get(i);
String appLabel = info.loadLabel(getPackageManager()).toString();
String packagename = info.activityInfo.packageName;
String appname = info.activityInfo.name;
list.add("appLabel:" + appLabel + " || packagename:" + packagename
+ " || appname:" + appname);
}
noteText.setText(list.toString());
}