How to compare string with arraylist

Question

How to comapre value with arraylist? Form database below is my code. I just want to filter only that values which are present in the database. I just want to filter array list a

Answer 1

I just change a few bits in your array list.

for (int i = 0; i < packs.size(); i++) {
  PackageInfo p = packs.get(i);
  ApplicationInfo applicationInfo = p.applicationInfo;
  String arrayval= arraylist.get(i).toString();
  if (arrayval.equals(p.packageName))
  {
    App app = new App();
    app.setTitle(p.applicationInfo.loadLabel(packageManager).toString());
    app.setPackageName(p.packageName);
    app.setVersionName(p.versionName);
    app.setVersionCode(p.versionCode);
    CharSequence description = p.applicationInfo.loadDescription(packageManager);
    app.setDescription(description != null ?    description.toString(): "");
    apps.add(app);
  }
}

You were trying to compare complete arrayList with a String hence that is NOT POSSIBLE