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| public class MainActivity extends AppCompatActivity { | |
| private static final String DATA_FROM_NET = "https://httpbin.org/get"; | |
| private static final String TAG = "MainActivity"; | |
| private Button btnGetData; | |
| private TextView tvHasil; | |
| private RequestQueue requestQueue; | |
| @Override protected void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.activity_main); | |
| btnGetData = (Button) findViewById(R.id.btnGetData); | |
| tvHasil = (TextView) findViewById(R.id.tvHasil); | |
| // initiate requestQueue volley | |
| requestQueue = Volley.newRequestQueue(this); | |
| btnGetData.setOnClickListener(new View.OnClickListener() { | |
| @Override public void onClick(View view) { | |
| getDataFromURL(DATA_FROM_NET); | |
| } | |
| }); | |
| } | |
| /** | |
| * ambil data dari internet menggunakan StringRequest dari volley | |
| */ | |
| private void getDataFromURL(String url) { | |
| StringRequest stringRequest = | |
| new StringRequest(Request.Method.GET, url, new Response.Listener<String>() { | |
| @Override public void onResponse(String response) { | |
| // logging | |
| Log.d(TAG, "onResponse: " + response); | |
| tvHasil.setText(response); | |
| } | |
| }, new Response.ErrorListener() { | |
| @Override public void onErrorResponse(VolleyError error) { | |
| // jika proses http rquest gagal | |
| tvHasil.setText(error.getLocalizedMessage()); | |
| } | |
| }); | |
| // menambahkan request ke queue | |
| requestQueue.add(stringRequest); | |
| } | |
| } |
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