Java 去除List列表中的重复项

/**
* Remove list duplicate item
*
* @param srcList
* @return
*/
private static ArrayList<ResolveInfo> removeListDuplicateItemWithOrder(
List<ResolveInfo> srcList) {
ArrayList<ResolveInfo> mResolveInfoList = new ArrayList<ResolveInfo>();
ArrayList<String> mPkgNameList = new ArrayList<String>();
for (ResolveInfo resolveInfo : srcList) {
String pkgName = resolveInfo.activityInfo.packageName;
XLog.d(TAG, "removeListDuplicateWithOrder,pkgName=" + pkgName);
// remove duplicate package name
if (!mPkgNameList.contains(pkgName)) {
mPkgNameList.add(pkgName);
mResolveInfoList.add(resolveInfo);
}
} if (DEBUG_MODE) {
for (ResolveInfo resolveInfo : mResolveInfoList) {
XLog.d(TAG, "kkkk,removeDuplicateWithOrder,resolveInfo="
+ resolveInfo);
}
}
return mResolveInfoList;
} /**
* Remove list duplicate item
*
* @param srcList
* @return
*/
private static ArrayList<String> removeListDuplicateItemWithOrder(
ArrayList<String> srcList) {
ArrayList<String> desList = new ArrayList<String>();
for (String src : srcList) {
XLog.d(TAG, "removeListDuplicateWithOrder,src=" + src);
if (!desList.contains(src)) {
desList.add(src);
}
} if (DEBUG_MODE) {
for (String des : desList) {
XLog.d(TAG, "removeDuplicateWithOrder,des=" + des);
}
}
return desList;
} /**
* Remove liset duplicate item
*
* @param srcList
* @return
*/
private static Set removeListDuplicateItemWithOrder2(
ArrayList<String> srcList) {
Set mLinkedHashSet = new LinkedHashSet<String>();
mLinkedHashSet.add(srcList);
for (Iterator iterator = mLinkedHashSet.iterator(); iterator.hasNext();) {
String element = (String) iterator.next();
XLog.d(TAG, "removeListDuplicateWithOrder2,element=" + element);
}
return mLinkedHashSet;
}