Java tutorial
package appewtc.masterung.testdrivinglicense; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.ListView; import android.widget.TextView; import com.squareup.okhttp.Call; import com.squareup.okhttp.Callback; import com.squareup.okhttp.FormEncodingBuilder; import com.squareup.okhttp.OkHttpClient; import com.squareup.okhttp.Request; import com.squareup.okhttp.RequestBody; import com.squareup.okhttp.Response; import org.json.JSONArray; import org.json.JSONObject; import java.io.IOException; public class ScoreListView extends AppCompatActivity { //Explicit private TextView textView; private ListView listView; private String[] loginStrings; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_score_list_view); //Bind Widget textView = (TextView) findViewById(R.id.textView22); listView = (ListView) findViewById(R.id.listView2); //Get Value from Intent loginStrings = getIntent().getStringArrayExtra("login"); //Show View textView.setText(loginStrings[1]); //Create ListView createListView(); } // Main Method private void createListView() { String urlPHP = "http://swiftcodingthai.com/toey/get_score_where.php"; OkHttpClient okHttpClient = new OkHttpClient(); RequestBody requestBody = new FormEncodingBuilder().add("isAdd", "true").add("id_login", loginStrings[0]) .build(); Request.Builder builder = new Request.Builder(); Request request = builder.url(urlPHP).post(requestBody).build(); Call call = okHttpClient.newCall(request); call.enqueue(new Callback() { @Override public void onFailure(Request request, IOException e) { } @Override public void onResponse(Response response) throws IOException { String strResponse = response.body().string(); Log.d("10AugV2", "strResponse ==> " + strResponse); try { JSONArray jsonArray = new JSONArray(strResponse); String[] dateStrings = new String[jsonArray.length()]; String[] scoreStrings = new String[jsonArray.length()]; for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); dateStrings[i] = jsonObject.getString("Date"); scoreStrings[i] = "? = " + jsonObject.getString("Score") + " ?"; } // for CoaurseAdapter coaurseAdapter = new CoaurseAdapter(ScoreListView.this, 1, dateStrings, scoreStrings); listView.setAdapter(coaurseAdapter); } catch (Exception e) { e.printStackTrace(); } } // onResponse }); } // createListView public void clickExit(View view) { finish(); } public void clickHome(View view) { Intent intent = new Intent(ScoreListView.this, ServiceActivity.class); intent.putExtra("login", loginStrings); startActivity(intent); finish(); } } // Main Class