Question

我正在开发一个搜索功能（搜索MySQL数据库中的表），但它无法正常工作。每当我在搜索栏中输入一个值时，吐司显示＆＃34;搜索然后不显示结果。我有setOnQueryTextListener存在的主要活动。

public class FindSkill extends AppCompatActivity {

    SearchView searchView;
    ListView listView;
    ImageView noData, noNetwork;
    String urlAdress;

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


        listView = (ListView) findViewById(R.id.searchList);
        searchView = (SearchView) findViewById(R.id.searchView);
        noData = (ImageView) findViewById(R.id.nodata);
        noNetwork = (ImageView) findViewById(R.id.nonetwork);
        urlAdress = "http://skillsexchangecyprus.com/SEC/ss.php";



      searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                SenderReceiver sr = new SenderReceiver(FindSkill.this, urlAdress,listView, query,noData,noNetwork);
                sr.execute();
                return false;
            }
            @Override
            public boolean onQueryTextChange(String query) {
                SenderReceiver sr = new SenderReceiver(FindSkill.this, urlAdress, listView, query, noData, noNetwork);
                sr.execute();
                return false;
            }});}
}

这是SenderReceiver的代码：

public class SenderReceiver extends AsyncTask<Void,Void,String>{

    Context ctx;
    String urlAdress;
    String query;
    ListView listView;
    ImageView noData, noNetwork;
    ProgressDialog progressDialog;



    public SenderReceiver(Context ctx, String urlAdress, ListView listView, String query, ImageView... imageViews){
        this.ctx=ctx;
        this.urlAdress=urlAdress;
        this.listView=listView;
        this.query=query;
        this.noData=imageViews[0];
        this.noNetwork=imageViews[1];
    }


    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        progressDialog=new ProgressDialog(ctx);
        progressDialog.setTitle("Search");
        progressDialog.setMessage("Searching... Please Wait!");
        progressDialog.show();
    }



    @Override
    protected String doInBackground(Void... params) {
        return this.sendAndReceive();
    }


    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        progressDialog.dismiss();

        //Reset listView
        listView.setAdapter(null);

        if ( s!= null ){

            if(! s.contains("null")) {
                if(s.length() > 0){
                    Parser parser = new Parser(ctx,s,listView);
                    parser.execute();
                }
            }else {
                noNetwork.setVisibility(View.INVISIBLE);
                noData.setVisibility(View.VISIBLE);

            } //data = "[{\"post_title\":\"title1\"},{\"post_title\":\"title2\"}]";

        }else {
            noNetwork.setVisibility(View.INVISIBLE);
            noData.setVisibility(View.VISIBLE);

        }
    }

    private String sendAndReceive(){

        HttpURLConnection connection = Connector.connection(urlAdress);


        if (connection == null){
            return null;
        }

        try {
            String urlParameters = "query=art";
            connection.setDoOutput(true);
            OutputStreamWriter outputStream = new OutputStreamWriter(connection.getOutputStream());
            outputStream.write(urlParameters);
            outputStream.flush();
           // OutputStream outputStream = connection.getOutputStream();
            BufferedWriter bufferedWriter = new BufferedWriter((outputStream));// write it to the network
            bufferedWriter.write(new DataBackager(query).packageData());
            bufferedWriter.flush();
            bufferedWriter.close();
            outputStream.close();

            //response
            int responseCode = connection.getResponseCode();
            //decode
            if (responseCode == connection.HTTP_OK){
                //return data
                InputStream inputStream = connection.getInputStream();
                //read data
                BufferedReader bufferedReader = new BufferedReader(( new InputStreamReader(inputStream)));
                String line;
                StringBuffer response = new StringBuffer();
                if (bufferedReader != null){
                    while ((line= bufferedReader.readLine()) != null)
                    {
                        response.append(line + "\n");
                    }
                }else {
                    return null;
                }

                return response.toString();

            }else{
                return  String.valueOf(responseCode);
            }

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

        return null;
    }
}

在搜索栏中输入日志时显示的内容：

03-22 20:19:10.881 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: #1 mView = com.android.internal.policy.PhoneWindow$DecorView{8d1f108 V.E...... R.....I. 0,0-0,0}
03-22 20:19:10.891 27300-28889/com.example.joudialfattal.skillsexchange I/System.out: (HTTPLog)-Static: isSBSettingEnabled false
03-22 20:19:10.891 27300-28889/com.example.joudialfattal.skillsexchange I/System.out: (HTTPLog)-Static: isSBSettingEnabled false
03-22 20:19:10.891 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:10.941 27300-27456/com.example.joudialfattal.skillsexchange D/mali_winsys: EGLint new_window_surface(egl_winsys_display*, void*, EGLSurface, EGLConfig, egl_winsys_surface**, egl_color_buffer_format*, EGLBoolean) returns 0x3000,  [1592x909]-format:1
03-22 20:19:10.961 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:10.991 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 0 - 0, 0) vi=Rect(0, 0 - 0, 0) or=1
03-22 20:19:11.671 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: #3 mView = null
03-22 20:19:11.701 27300-27300/com.example.joudialfattal.skillsexchange E/ViewRootImpl: sendUserActionEvent() mView == null
03-22 20:19:15.261 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: #1 mView = com.android.internal.policy.PhoneWindow$DecorView{89ca702 V.E...... R.....I. 0,0-0,0}
03-22 20:19:15.271 27300-28989/com.example.joudialfattal.skillsexchange I/System.out: (HTTPLog)-Static: isSBSettingEnabled false
03-22 20:19:15.271 27300-28989/com.example.joudialfattal.skillsexchange I/System.out: (HTTPLog)-Static: isSBSettingEnabled false
03-22 20:19:15.281 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:15.331 27300-27456/com.example.joudialfattal.skillsexchange D/mali_winsys: EGLint new_window_surface(egl_winsys_display*, void*, EGLSurface, EGLConfig, egl_winsys_surface**, egl_color_buffer_format*, EGLBoolean) returns 0x3000,  [1592x909]-format:1
03-22 20:19:15.341 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:15.351 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 0 - 0, 0) vi=Rect(0, 0 - 0, 0) or=1
03-22 20:19:15.451 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: MSG_RESIZED: ci=Rect(0, 96 - 0, 0) vi=Rect(0, 96 - 0, 0) or=1
03-22 20:19:15.481 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:15.991 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: #3 mView = null
03-22 20:19:16.031 27300-27300/com.example.joudialfattal.skillsexchange E/ViewRootImpl: sendUserActionEvent() mView == null
03-22 20:19:16.151 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: MSG_RESIZED: ci=Rect(0, 96 - 0, 1128) vi=Rect(0, 96 - 0, 1128) or=1
03-22 20:19:16.161 27300-27300/com.example.joudialfattal.skillsexchange W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView)
03-22 20:19:45.241 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getCursorCapsMode on inactive InputConnection
03-22 20:19:45.431 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getCursorCapsMode on inactive InputConnection
03-22 20:19:45.531 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getExtractedText on inactive InputConnection
03-22 20:19:45.531 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
03-22 20:19:45.531 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
03-22 20:19:45.671 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getTextBeforeCursor on inactive InputConnection
03-22 20:19:45.691 27300-27300/com.example.joudialfattal.skillsexchange V/ActivityThread: updateVisibility : ActivityRecord{77cc7ba token=android.os.BinderProxy@39d6639 {com.example.joudialfattal.skillsexchange/com.example.joudialfattal.skillsexchange.FindSkill}} show : true
03-22 20:19:45.691 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getSelectedText on inactive InputConnection
03-22 20:19:45.701 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getTextAfterCursor on inactive InputConnection
03-22 20:19:45.701 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: getExtractedText on inactive InputConnection
03-22 20:19:45.711 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
03-22 20:19:45.711 27300-27300/com.example.joudialfattal.skillsexchange W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
03-22 20:19:46.101 27300-27300/com.example.joudialfattal.skillsexchange D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 96 - 0, 0) vi=Rect(0, 96 - 0, 0) or=1

Pasrer类代码：

public class Parser extends AsyncTask <Void, Void,Integer> {

    Context ctx;
    ListView listView;
    String data;
    ArrayList<String> titles = new ArrayList<>();


    public Parser(Context ctx, String data, ListView listView) {
        this.ctx = ctx;
        this.data=data;
        this.listView = listView;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected Integer doInBackground(Void... params) {
        return this.parse();
    }

    @Override
    protected void onPostExecute(Integer integer) {
        super.onPostExecute(integer);

        if (integer == 1) {
            ArrayAdapter adapter = new ArrayAdapter(ctx, android.R.layout.simple_list_item_1, titles);
            listView.setAdapter(adapter);
        } else {
            Toast.makeText(ctx, "Unable to Parse", Toast.LENGTH_LONG).show();
        }
    }


    private int parse() {


        try {
            JSONArray ja = new JSONArray(data);
            JSONObject jo = null;

            titles.clear();

            for (int i = 0; i < ja.length(); i++) {
                jo = ja.getJSONObject(i);
                String title = jo.getString("post_title");
                titles.add(title);
            }
            return 1;
        } catch (JSONException e) {
            return 0;
        }
    }
}

PS：PHP代码100％正常工作，因为我尝试使用数据库并显示了所需的结果。

Answer 1

尝试更改

urlAdress = "http://skillsexchangecyprus.com/SEC/ss.php";

到

urlAdress = "https://skillsexchangecyprus.com/SEC/ss.php";

搜索功能无效 - Android

1 个答案: