我正在尝试从U.I.响应中创建动态JSON。我有以下代码。
class LoadAllQuestions extends AsyncTask<String, String, String> {
private ProgressDialog pDialog;
JSONParser jParser = new JSONParser();
JSONArray questions = null;
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Loading questions. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground(String... args) {
// getting JSON string from URL
companyName = cn.getText().toString();
projectName = pn.getText().toString();
String componentName = (String) ab.getSelectedTab().getText();
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("company", companyName));
nameValuePairs.add(new BasicNameValuePair("project", projectName));
nameValuePairs.add(new BasicNameValuePair("component",
componentName));
JSONObject json = jParser.makeHttpRequest(url, "POST",
nameValuePairs);
// Check your log cat for JSON response
Log.d("All Questions: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
Log.v("RESPONSE", "Success!");
// products found: getting Array of Questions
questions = json.getJSONArray(TAG_QUESTIONS);
// looping through All Questions
for (int i = 0; i < questions.length(); i++) {
JSONObject c = questions.getJSONObject(i);
// Storing each JSON item in variable
String name = c.getString(TAG_NAME);
String field = c.getString(TAG_FIELD);
String value = c.getString(TAG_VALUE);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_NAME, name);
map.put(TAG_FIELD, field);
map.put(TAG_VALUE, value);
infoList.add(map);
}
} else {
// no products found
Log.v("ERROR", "No JSON for you!");
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String string) {
// dismiss the dialog
pDialog.dismiss();
// loop through infoList
for (int i = 0; i < infoList.size(); i++) {
// get HashMap
HashMap<String, String> map = infoList.get(i);
// if the answer should be a radio button, inflate it
if (map.get(TAG_FIELD).equals("Radio")) {
Log.v("RESPONSE", "About to create a radio button");
// find
LinearLayout content = (LinearLayout) view
.findViewById(R.id.genA_layout);
// create
TextView tv = new TextView(getActivity());
RadioGroup rg = new RadioGroup(getActivity());
rg.setOrientation(RadioGroup.HORIZONTAL);
RadioButton rb = new RadioButton(getActivity());
RadioButton rb2 = new RadioButton(getActivity());
LinearLayout ll = new LinearLayout(getActivity());
// set
rb.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
rb2.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
ll.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
rb.setText(TAG_VALUE);
rb2.setText(TAG_VALUE);
tv.setText(map.get(TAG_NAME));
ll.setOrientation(LinearLayout.HORIZONTAL);
// add
rg.addView(rb);
rg.addView(rb2);
ll.addView(tv);
ll.addView(rg);
content.addView(ll);
}
// else inflate the view as an EditText field
else if (map.get(TAG_FIELD).equals("Text Field")) {
Log.v("RESPONSE", "About to create an EditText");
// find
LinearLayout content = (LinearLayout) view
.findViewById(R.id.genA_layout);
// create
TextView tv = new TextView(getActivity());
EditText et = new EditText(getActivity());
LinearLayout ll1 = new LinearLayout(getActivity());
// set
tv.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
et.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
ll1.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
tv.setText(map.get(TAG_NAME));
ll1.setOrientation(LinearLayout.HORIZONTAL);
// add
ll1.addView(tv);
ll1.addView(et);
content.addView(ll1);
} else if (map.get(TAG_FIELD).equals("Check Box")) {
Log.v("RESPONSE", "About to create a CheckBox");
// find
LinearLayout content = (LinearLayout) view
.findViewById(R.id.genA_layout);
// create
TextView tv = new TextView(getActivity());
CheckBox cb = new CheckBox(getActivity());
LinearLayout ll = new LinearLayout(getActivity());
// set
cb.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
ll.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
tv.setText(map.get(TAG_NAME));
ll.setOrientation(LinearLayout.HORIZONTAL);
// add
ll.addView(tv);
ll.addView(cb);
content.addView(ll);
} else if (map.get(TAG_FIELD).equals("Drop Down Menu")) {
Log.v("RESPONSE", "About to create a Drop Down Menu");
}
}
// find
LinearLayout loader = (LinearLayout) view
.findViewById(R.id.loader_layout);
Button save = (Button) view
.findViewById(R.id.generalAssets_save_button_ID);
// set
loader.setVisibility(View.GONE);
save.setVisibility(View.VISIBLE);
};
}
和JSON
{
"questions": [
{
"display_name": "Store #",
"field_type": "Text Field",
"option_value": ""
},
{
"display_name": "Address",
"field_type": "Text Field",
"option_value": ""
},
{
"display_name": "Type of Business",
"field_type": "Drop Down Menu",
"option_value": "Education\r\nHealth\r\nComputers\r\nFood\r\nRetail\r\nOther"
},
{
"display_name": "Is this business good?",
"field_type": "Radio",
"option_value": "Yes\r\nNo"
},
{
"display_name": "Are they nice people?",
"field_type": "Check Box",
"option_value": "Yes\r\nNo"
}
],
"success": 1
}
现在我希望它看起来像这样
Store # ------------------ <EditText>
Address ------------------ <EditText>
Is this business good? --- <RadioButton> (Yes) <RadioButton> (No)
Type of business? -------- <Spinner> (Education\r\nHealth\r\nComputers\r\nFood\r\nRetail\r\nOther)
等，但是现在它正在这样做，字面意思，这些是我看到的值。
Store# ------------------ nothing
Address ----------------- nothing
Is this business good?--- <RadioButton> (option_value) <RadioButton> (option_value)
Are they nice people?---- <CheckBox>
所以这可能比您需要的代码更多，但我想确保您完全理解发生了什么。
编辑* 以显示更改
编辑后它正在运行，有点......如果我需要更多帮助，我会发布另一个问题。原始问题解决了。特别感谢@sarwar
答案 0 :(得分：1)
当你去扩充布局时，看起来你正在测试错误的东西。这就是你遇到麻烦的地方：for (String key : map.keySet()) {
您可以根据不同类型的字段测试每个地图中的所有键。但是没有理由拥有那个内循环。您的field_type始终包含在：
map.get(TAG_FIELD)同样，如果你想要display_name，你可以通过map.get(TAG_NAME)获得它。剪切内部循环并将你的类型与正确的值进行比较，你应该走在正确的轨道上。
答案 1 :(得分：0)
你没有正确地从HashMap中调用它们
map.put(TAG_NAME, name);
map.put(TAG_FIELD, field);
map.put(TAG_VALUE, value);
你只需要调用类型..你需要在每个UI组件中明确地调用名称和值..即
tv.setText(map.get(TAG_VALUE));