getResource returns boolean instead String[]

Question

In an IntentService class i want to put some Arrays from Android xml files in an ArrayList, Android-Studio doesnt accept this, but only if i want to add it in an ArrayList. Android Studio says it found a Boolean instead a String[]. But why Boolean? this are String[]. In another Code-Fragment, i can work with this String[] that i get from getResources() without a problem.

private ArrayList<String[]> alleTermine = new ArrayList<String[]>();

private String[] hausmuell;
private String[] gelbeSaecke;
private String[] gruenAbfall;
private String[] altPapier;



public void onCreate() {
    super.onCreate();
    Resources res = getResources();
     //this makes a String[]
    hausmuell = res.getStringArray(R.array.hausmuell);
    gelbeSaecke = res.getStringArray(R.array.gelber_sack);
    gruenAbfall = res.getStringArray(R.array.gruenabfall);
    altPapier = res.getStringArray(R.array.altpapier);
    alleTermine=alleTermine.add(hausmuell)
}

The xml.file looks like this:

<?xml version='1.0' encoding='utf-8'?>
 <resources>
 <string-array name='hausmuell'>
 <item>1482451200000</item>
  <item>1452214800000</item>
 <item>1453424400000</item>
 <item>1454634000000</item>
 <item>1455843600000</item>

 </string-array>
 </resources>

Answer 1

alleTermine=alleTermine.add(hausmuell)

ArrayList#add() method returns a boolean, and you're trying to assign the return value to an ArrayList. That won't compile.

You probably want something like:

alleTermine = new ArrayList<>();
alleTermine.add(hausmuell);