php - 使用 volley 搜索 MySQL 数据库

Question

我尝试使用 php 从 MySQL 数据库中检索所有数据，并在我的应用程序中成功地这样做了。现在我尝试使用 edittext 将该字符串传递给 php，但我无法这样做。我成功了，但没有使用 volley 库。有什么方法可以使用 volley 在 url 之后添加“关键字”，因为这是我唯一需要的东西吗？ 在以前的版本中，我使用 JSONObject json = jParser.makeHttpRequest(url_search, "GET", params); 将参数传递给 php..

例子和代码: 我希望将其作为 url 字符串传递:http://myip/myproject/search.php?keyword .

我正在使用这段代码，就像往常一样: 在 edittext 字段上 -> searchIntent.putExtra("keyword",txtkeyword.getText().toString());

在我的搜索 Activity 中:

public class AllEmpresasActivity extends Activity {
    // Log tag
    private static final String TAG = AllEmpresasActivity.class.getSimpleName();

    // Empresas json url
    private static final String url = "http://192.168.1.90/android_connect/search.php?params=%1$s,num1";

    private ProgressDialog pDialog;
    private List<Empresa> empresaList = new ArrayList<Empresa>();
    private ListView listView;
    private CustomListAdapter adapter;

    public String searchkey;


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

        Intent searchIntent = getIntent();
        searchkey = searchIntent.getStringExtra("keyword");

        listView = (ListView) findViewById(R.id.list);
        adapter = new CustomListAdapter(this, empresaList);
        listView.setAdapter(adapter);

        pDialog = new ProgressDialog(this);
        // Showing progress dialog before making http request
        pDialog.setMessage("Loading...");
        pDialog.show();

        // changing action bar color
        getActionBar().setBackgroundDrawable(
                new ColorDrawable(Color.parseColor("#1b1b1b")));

        // Creating volley request obj
        JsonArrayRequest movieReq = new JsonArrayRequest(url,
                new Response.Listener<JSONArray>() {
                    @Override
                    public void onResponse(JSONArray response) {
                        Log.d(TAG, response.toString());
                        hidePDialog();

                        // Parsing json
                        for (int i = 0; i < response.length(); i++) {
                            try {

                                JSONObject obj = response.getJSONObject(i);
                                Empresa empresa = new Empresa();
                                empresa.setMarca(obj.getString("marca"));
                                empresa.setThumbnailUrl(obj.getString("imagempequena"));
                                empresa.setMarcatotal(obj.getString("marcatotal"));
                                empresa.setDatainicio(obj.getString("datainicio"));
                                empresa.setActividade(obj.getString("actividade"));

                                // adding empresa to empresa array
                                empresaList.add(empresa);

                            } catch (JSONException e) {
                                e.printStackTrace();
                            }

                        }

                        // notifying list adapter about data changes
                        // so that it renders the list view with updated data
                        adapter.notifyDataSetChanged();
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                VolleyLog.d(TAG, "Error: " + error.getMessage());
                hidePDialog();

            }
        });

        // Adding request to request queue
        AppController.getInstance().addToRequestQueue(movieReq);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        hidePDialog();
    }

    private void hidePDialog() {
        if (pDialog != null) {
            pDialog.dismiss();
            pDialog = null;
        }
    }

}

Answer 1

public class AllEmpresasActivity extends Activity {
    ...
    private static final String sUrl = "http://myip/myproject/search.php?keyword=%1$s";
    ...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ...
        String searchKey = getIntent().getStringExtra("keyword");
        String url = String.format(sUrl, searchKey);
        // Creating volley request obj
        JsonArrayRequest movieReq = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
        ...