Incompatibele types error when copying code

Question

I'm setting up a logger in a program but used some code from another program. I could fix all errors except for an incompatible type error returned by a Collectors.toList().

The error: https://i.sstatic.net/VtOsx.png

The return I get: https://i.sstatic.net/XGsvU.png

The return I need: https://i.sstatic.net/uMdXA.png

The list should return a string array but only returns an object array at this point. I can't cast it as a string array nor can I change the mLines array to an object array since that will cause problems later on in the code.

The code behind these function are native java so changing this changes it everywhere on my computer. Any idea how to fix this?

private static class LogcatAdapter extends BaseAdapter {

        private List<String> mLines = Collections.emptyList();

        void reload() {
            try {
                Process process = Runtime.getRuntime().exec("logcat -d -t 500 -v time");
                BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
                mLines = reader.lines().collect(Collectors.toList());
            } catch (IOException e) {
                StringWriter str = new StringWriter();
                e.printStackTrace(new PrintWriter(str));
                mLines = Collections.singletonList(str.toString());
            }
            notifyDataSetChanged();
        }

        @Override
        public String toString() {
            return BuildConfig.APPLICATION_ID + " " + BuildConfig.VERSION_NAME + "\n" +
                   mLines.stream().collect(Collectors.joining("\n"));
        }

        @Override
        public int getCount() {
            return mLines.size();
        }

        @Override
        public String getItem(int position) {
            return mLines.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View view, ViewGroup parent) {
            if (view == null) {
                view = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.item_logline, parent, false);
            }
            String line = getItem(position);
            ((TextView) view.findViewById(R.id.text)).setText(line);
            return view;
        }

    }

Answer 1

You can specify the T of the toList call "by hand":

mLines = reader.lines().collect(Collectors.<String>toList());

But that should not be necessary. That seems to be a bug in IntelliJ, the code actually compiles and runs fine.