将 json 解析值与用户输入的值匹配答案

【问题标题】：Matching json parsed value with user entered value将 json 解析值与用户输入的值匹配
【发布时间】：2014-04-22 11:58:14
【问题描述】：

我解析了 json 以适应我的 autocompleteTextView。我试图将我的 json 对象解析的值与用户输入的值匹配。

但有些地方我失败了。请帮助我匹配这些值。

我必须将用户输入的字符串（城市）与存储在 responseList 中的已解析 json 值匹配。

这就是我正在尝试的方式。

    protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_search);

                new HttpGetTask().execute();

                Button shwBtn = (Button) findViewById(R.id.showBtn);

                shwBtn.setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        // TODO Auto-generated method stub

                        AutoCompleteTextView city1 = (AutoCompleteTextView) findViewById(R.id.autoCity);
                        EditText area1 = (EditText) findViewById(R.id.edArea);

                        String aCity = city1.getText().toString().trim();
                        String aArea = area1.getText().toString().trim();

                        //here i have to match acity with all the values in responseList before sending it to next activity

                            Intent myInt = new Intent(getBaseContext(),
                                    Map1Activity.class);

                            String city = city1.getText().toString();
                            String area = area1.getText().toString();
                            myInt.putExtra("city", city);
                            myInt.putExtra("area", area);
                            startActivity(myInt);


                    }
                });

            }

            private class HttpGetTask extends AsyncTask<Void, Void, String> {

                String URL = "xyzz.cities.json?app_id=test";
                AndroidHttpClient mClient = AndroidHttpClient.newInstance("");

                @Override
                protected String doInBackground(Void... params) {
                    // http stuff
        return null;
                }

                @Override
                protected void onPostExecute(String result) {
                    try {
                        JSONArray json = new JSONArray(result);

        //getting my response(cities)
        Log.v("ResponseCity", result);

                        final List<String> responseList = new ArrayList<String>();

                        for (int i = 0; i < json.length(); i++) {
                            final JSONObject e = json.getJSONObject(i);

                            String name = e.getString("name");
//Adding all values to a stringList
                            responseList.add(name);

                            ArrayAdapter<String> adapter;
                            adapter = new ArrayAdapter<String>(SearchActivity.this,
                                    android.R.layout.simple_dropdown_item_1line,
                                    responseList);
                            AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCity);
                            textView.setAdapter(adapter);

                        }

                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    if (null != mClient)
                        mClient.close();
                }

            }

【问题讨论】：

您只需要循环 responseList 并为每次迭代将迭代中的字符串与每次迭代中的字符串 acity 进行比较。能否详细说明您计划实现的目标？
@cokeby190 我没有“在哪里”循环和匹配两者。

标签： java android regex json scope

【解决方案1】：

因此，假设您需要匹配某个城市，然后才能使用地图：

 private final List<String> responseList;

      protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_search);

            new HttpGetTask().execute();

            Button shwBtn = (Button) findViewById(R.id.showBtn);

            shwBtn.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub

                    AutoCompleteTextView city1 = (AutoCompleteTextView) findViewById(R.id.autoCity);
                    EditText area1 = (EditText) findViewById(R.id.edArea);

                    String aCity = city1.getText().toString().trim();
                    String aArea = area1.getText().toString().trim();

                    //here i have to match acity with all the values in responseList before sending it to next activity

                    for(int i=0; i<responseList.size(); i++) {

                        if(responseList.get(i).equals(aCity)) {
                            Intent myInt = new Intent(getBaseContext(),
                                Map1Activity.class);

                            String city = city1.getText().toString();
                            String area = area1.getText().toString();
                            myInt.putExtra("city", city);
                            myInt.putExtra("area", area);
                            startActivity(myInt);
                        }

                    }
                }
            });

        }

        private class HttpGetTask extends AsyncTask<Void, Void, String> {

            String URL = "xyzz.cities.json?app_id=test";
            AndroidHttpClient mClient = AndroidHttpClient.newInstance("");

            @Override
            protected String doInBackground(Void... params) {
                // http stuff
    return null;
            }

            @Override
            protected void onPostExecute(String result) {
                try {
                    JSONArray json = new JSONArray(result);

    //getting my response(cities)
    Log.v("ResponseCity", result);

                    responseList = new ArrayList<String>();

                    for (int i = 0; i < json.length(); i++) {
                        final JSONObject e = json.getJSONObject(i);

                        String name = e.getString("name");
//Adding all values to a stringList
                        responseList.add(name);

                        ArrayAdapter<String> adapter;
                        adapter = new ArrayAdapter<String>(SearchActivity.this,
                                android.R.layout.simple_dropdown_item_1line,
                                responseList);
                        AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCity);
                        textView.setAdapter(adapter);

                    }

                } catch (JSONException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                if (null != mClient)
                    mClient.close();
            }

        }

如果我没有猜错你的意图，应该是这样的。

【讨论】：