Cara Membuat Aplikasi Android Pencarian Kode POS + Bonus Source Code Project Android

How to make an android application to search for Indonesian POS code. I used to make an Android application but using the Javascript Framework7 + Cordova, now I will share the Java version made on Android Studio.

Ok, just immediately, the postcode database that I have stored in Firebase is publicly used by anyone. Endpoint:

    Daftar propinsi

    https://kodepos-2d475.firebaseio.com/list_propinsi.json?print=pretty

    Daftar kota/kabupaten

    https://kodepos-2d475.firebaseio.com/list_kotakab/{key propinsi}.json?print=pretty

Daftar kecamatan, kelurahan & kodepos

https://kodepos-2d475.firebaseio.com/kota_kab/{key kota}.json?print=pretty

Cara Membuat Aplikasi Android Pencarian Kode POS + Bonus Free Source Code

First we open the studio android then create a new project, then create files, classes as drawn:

dimens.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<dimen name="margin_16dp">16dp</dimen>
</resources>

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

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

</android.support.constraint.ConstraintLayout>

activity_propinsi.xml masih sama dengan activity_main.xml

tools:context=".PropinsiActivity">

list_daerah.xml untuk menampilkan daftar propinsi dan kota.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:padding="@dimen/margin_16dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/name"
        android:freezesText="true"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        style="@style/TextAppearance.AppCompat.Subhead" />

</LinearLayout>

activity_kota.xml EditText untuk filter.

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.bachors.kodepos.KotaActivity">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">

        <EditText android:id="@+id/filter"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:padding="@dimen/margin_16dp"
            android:hint="Filter" />

        <ListView
            android:id="@+id/list_pos"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

list_pos.xml untuk menampilkan data kecamatan, kelurahan dan kodepos

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:padding="@dimen/margin_16dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/kecamatan"
            android:freezesText="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            style="@style/TextAppearance.AppCompat.Subhead" />

        <TextView
            android:id="@+id/kodepos"
            android:freezesText="true"
            style="@style/TextAppearance.AppCompat.Subhead"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@color/colorPrimary"
            android:gravity="end" />

    </LinearLayout>

    <TextView
        android:id="@+id/kelurahan"
        android:freezesText="true"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout> Karena data jsonnya cukup sederhana dan berbentuk flat, keynya juga bersifat dinamis

{
"p1" : "Bali",
"p10" : "Jawa Tengah",
"p11" : "Jawa Timur",
"p12" : "Kalimantan Barat",
"p13" : "Kalimantan Selatan",
"p14" : "Kalimantan Tengah",
"p15" : "Kalimantan Timur",
"p16" : "Kalimantan Utara",
"p17" : "Kepulauan Riau",
...
}

jadi saya menggunakan cara ini yang saya temukan di tutorial http://www.androidhive.info/2012/01/android-json-parsing-tutorial/, tidak menggunakan librari seperti retrofit, volley atau yg lainnya. HttpHandler.java:

public class HttpHandler {

    private static final String TAG = HttpHandler.class.getSimpleName();

    public HttpHandler() {
    }

    public String makeServiceCall(String reqUrl) {
        String response = null;
        try {
            URL url = new URL(reqUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            // read the response
            InputStream in = new BufferedInputStream(conn.getInputStream());
            response = convertStreamToString(in);
        } catch (MalformedURLException e) {
            Log.e(TAG, "MalformedURLException: " + e.getMessage());
        } catch (ProtocolException e) {
            Log.e(TAG, "ProtocolException: " + e.getMessage());
        } catch (IOException e) {
            Log.e(TAG, "IOException: " + e.getMessage());
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
        return response;
    }

    private String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line).append('\n');
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
}

MainActivity.java mengambil data json daftar propinsi lalu menampilkannya di listview list_daerah.xml menggunakan SimpleAdapter.

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {

    private String TAG = MainActivity.class.getSimpleName();

    private ProgressDialog pDialog;
    private ListView lv;

    // URL to get propinsi list JSON
    final static String url = "https://kodepos-2d475.firebaseio.com/list_propinsi.json";

    ArrayList<HashMap<String, String>> posList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // menampung data propinsi
        posList = new ArrayList<>();

        // listview untuk menampilkan daftar propinsi
        lv = (ListView) findViewById(R.id.list_pos);
        lv.setOnItemClickListener(this);

        // Get JSON data
        new GetPost().execute();
    }

    // Async task class to get json by making HTTP call
    private class GetPost extends AsyncTask<Void, Void, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // Showing progress dialog
            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("Please wait...");
            pDialog.setCancelable(false);
            pDialog.show();

        }

        @Override
        protected Void doInBackground(Void... arg0) {
            HttpHandler sh = new HttpHandler();

            // Making a request to url and getting response
            String jsonStr = sh.makeServiceCall(url);

            Log.e(TAG, "Response from url: " + jsonStr);

            if (jsonStr != null) {
                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);

                    // Parser flat object
                    Iterator<String> iter = jsonObj.keys();
                    while (iter.hasNext()) {
                        String key = iter.next();
                        try {
                            Object value = jsonObj.get(key);
                            String nama = value.toString();

                            // tmp hash map for single GetPost
                            HashMap<String, String> pos = new HashMap<>();

                            // adding each child node to HashMap key => value
                            pos.put("name", nama);
                            pos.put("idp", key);

                            // adding pos to pos list
                            posList.add(pos);

                        } catch (JSONException e) {
                            // Something went wrong!
                        }
                    }
                } catch (final JSONException e) {
                    Log.e(TAG, "Json parsing error: " + e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),
                                    "Data tidak ada.",
                                    Toast.LENGTH_LONG)
                                    .show();
                        }
                    });

                }
            } else {
                Log.e(TAG, "Couldn't get json from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Terjadi kesalahan coba lain waktu.",
                                Toast.LENGTH_LONG)
                                .show();
                    }
                });

            }

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            super.onPostExecute(result);
            // Dismiss the progress dialog
            if (pDialog.isShowing())
                pDialog.dismiss();

            // Sorting a-z
            Collections.sort(posList, new Comparator<HashMap< String,String >>() {

                @Override
                public int compare(HashMap<String, String> lhs,
                                   HashMap<String, String> rhs) {
                    return lhs.get("name").compareTo(rhs.get("name"));
                }
            });

            // Updating parsed JSON data into ListView
            ListAdapter adapter = new SimpleAdapter(
                    MainActivity.this, posList,
                    R.layout.list_daerah, new String[]{"name"}, new int[]{R.id.name});

            lv.setAdapter(adapter);
        }

    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        // mengambil idp & name dari list yang kita click
        String idp = posList.get(position).get("idp");
        String name = posList.get(position).get("name");

PropinsiActivity.java sama seperti MainActivity.java tinggal merubah url dan activitynya.

...
private static String url;
...

protected void onCreate(Bundle savedInstanceState) {
    ...

    Bundle b = getIntent().getExtras();
    // get id propinsi
    url = "https://kodepos-2d475.firebaseio.com/list_kotakab/" + b.getString("idp") + ".json";

    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    ActionBar actionBar = getSupportActionBar();
    // set toolbar title
    actionBar.setTitle(b.getString("name"));

    ...
}

...

@Override
public void onBackPressed() {
    super.onBackPressed();
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
        finish();
        return true;
        default:
        return super.onOptionsItemSelected(item);
    }
}

Atau sobat bisa mendownload source codenya disini. Selamat mencoba NGOPREK coding yah

Cara Membuat Aplikasi Android Pencarian Kode POS + Bonus Source Code Project Android

berga tech 7:07 PM

Lihat Juga Source Code lainnya dibawah ini :

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Cara Membuat Aplikasi Android Pencarian Kode POS + Bonus Source Code Project Android

berga tech 7:07 PM

Lihat Juga Source Code lainnya dibawah ini :

Composure

berga tech 7:07 PM