Membuat Listview dengan menampilkan files di folder Android Studio Java

 Fungsi, Array Adapter, Bebas Taro Dimanapun

private class StableArrayAdapter extends ArrayAdapter<String> {

    HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();

    public StableArrayAdapter(Context context, int textViewResourceId,
                              List<String> objects) {
        super(context, textViewResourceId, objects);
        for (int i = 0; i < objects.size(); ++i) {
            mIdMap.put(objects.get(i), i);
        }
    }

    @Override
    public long getItemId(int position) {
        String item = getItem(position);
        return mIdMap.get(item);
    }

    @Override
    public boolean hasStableIds() {
        return true;
    }

}

 Taro Kode ini Di Bawah

super.onCreate(savedInstanceState);
setContentView(R.layout.favorited);

final ListView listview = (ListView) findViewById(R.id.listView1); 

//pencarian files di folder
        final ListView listview = (ListView) findViewById(R.id.listView1);String path = Environment.getExternalStorageDirectory().toString() + "/RanairuCreation/Favorite";
        File directory = new File(path);
        File[] files = directory.listFiles();

        //fungsi listview
        final ArrayList<String> list = new ArrayList<String>();
        for (int i = 0; i < files.length; ++i) {
            list.add(files[i].getName());

        }
        final StableArrayAdapter adapter = new StableArrayAdapter(this,
                android.R.layout.simple_list_item_1, list);
        listview.setAdapter(adapter);

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            //fungsi fileslist ketika di klik
            @Override
            public void onItemClick(AdapterView<?> parent, final View view,
                                    int position, long id) {
//                final String item = (String) parent.getItemAtPosition(position);
//klik yg akan terjadi, contoh seperti dibawah

                AlertDialog.Builder a = new AlertDialog.Builder(Favorited.this);
                a.setView(v);
                a.show();
                a.setCancelable(true); }

 

 activity xml nya

<ListView
    android:layout_width="match_parent"
    android:id="@+id/listView1"
    android:layout_height="wrap_content"/>