如何从列表中删除“[]

Question

我有

["A","B","C","D"]

我想将它绑定到 android 微调器。我如何从 ["A","B","C","D"] 中删除 []""，以便只有字符会显示在微调器中。

    sp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            String asd = "";
            arrayList3.clear();
            asd= arrayList2.get(position);
            String[] items = asd.split(",");
            List<String> list = Arrays.asList(items);
            for(String item : list)
             {
                arrayList3.add(item);
             }
            ArrayAdapter<String> dataAdapter1 =
                    new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, arrayList3);
            sp2.setAdapter(dataAdapter1);

        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
        }
    });

Answer 1

只需在您的代码中用 foreach 循环替换此代码

   for(String item : list)
    {
        item = item.replace("[","");
        item = item.replace("]","");
        item = item.replace("\"","");

        arrayList3.add(item);
    }