我被困住并且发疯了来解决这个问题，但我没有运气。我尝试了 SO 成员给我的所有指导方针，正如我之前问过这个问题一样我可以解决这个 JSONParsing 吗？我从 PHP 发布数据并希望在 android EditText 框中获取它。我对其进行了编码，但是从第一天开始就存在一些问题，但尚未解决。我在模拟器和电话上遇到了不同的 LogCat 错误. 我已经向你展示了我的 java 代码和 LogCat 错误。任何指南对我来说都是宝贵的。
我的 Java 代码是我出错的地方：
// save button
btnSave = (Button) findViewById(R.id.btnSave);
// getting product details from intent
Intent i = getIntent();
// getting product id (pid) from intent
cid = i.getStringExtra(TAG_CID);
// save button click event
btnSave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// starting background task to update product
new SaveTaskDetails().execute();
}
});
}
@Override
protected void onStart() {
super.onStart();
// Getting complete product details in background thread
new GetTaskDetails().execute();
}
/**
* Background Async Task to Get complete product details
* */
class GetTaskDetails extends AsyncTask<String, String, JSONObject> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
tDialog = new ProgressDialog(My_Task.this);
tDialog.setTitle("Please Wait");
tDialog.setMessage("Retrieving Task Details.");
tDialog.setIndeterminate(false);
tDialog.setCancelable(true);
tDialog.show();
}
/**
* Getting task details in background thread
* @return
**/
protected JSONObject doInBackground(String... params1) {
JSONObject my_task = null;
// updating UI from Background Thread
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("cid", cid));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = JSONParser.makeHttpRequest(
url_read_mytask, "GET", params);
// check your log for json response
// Log.d("Single Task Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray my_taskObj = json
.getJSONArray(TAG_MYTASK); // JSON Array
// get first product object from JSON Array
my_task = my_taskObj.getJSONObject(0);
}
else
{
// task with cid not found
}
}
catch (JSONException e) {
e.printStackTrace();
}
return my_task;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(JSONObject my_task) {
// dismiss the dialog once got all details
cus_name_txtbx = (EditText) findViewById(R.id.cus_name_txtbx);
try {
cus_name_txtbx.setText(my_task.getString(TAG_NAME));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
contact_no_txtbx = (EditText) findViewById(R.id.contact_no_txtbx);
try {
contact_no_txtbx.setText(my_task.getString(TAG_CONTACT));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ticket_no_txtbx = (EditText) findViewById(R.id.ticket_no_txtbx);
try {
ticket_no_txtbx.setText(my_task.getString(TAG_TICKET));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
task_detail_txtbx = (EditText) findViewById(R.id.task_detail_txtbx);
try {
task_detail_txtbx.setText(my_task.getString(TAG_TASKDETAIL));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
tDialog.dismiss();
}
}
/**
* Background Async Task to Save product Details
* */
class SaveTaskDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
tDialog = new ProgressDialog(My_Task.this);
tDialog.setTitle("Please Wait");
tDialog.setMessage("Saving Task");
tDialog.setIndeterminate(false);
tDialog.setCancelable(true);
tDialog.show();
}
/**
* Saving product
* */
protected String doInBackground(String... args) {
// getting updated data from EditTexts
String cus_name = cus_name_txtbx.getText().toString();
String contact_no = contact_no_txtbx.getText().toString();
String ticket_no = ticket_no_txtbx.getText().toString();
String task_detail = task_detail_txtbx.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_CID, cid));
params.add(new BasicNameValuePair(TAG_NAME, cus_name));
params.add(new BasicNameValuePair(TAG_CONTACT, contact_no));
params.add(new BasicNameValuePair(TAG_TICKET, ticket_no));
params.add(new BasicNameValuePair(TAG_TASKDETAIL, task_detail));
// sending modified data through http request
// Notice that update product url accepts POST method
JSONObject json = JSONParser.makeHttpRequest(url_update_mytask,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
Intent i = getIntent();
// send result code 100 to notify about product update
setResult(100, i);
finish();
} else {
// failed to update product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product uupdated
tDialog.dismiss();
}
}
我的 Logcat 错误是：
01-01 11:28:52.549: E/WindowManager(31782): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 11:38:15.149: E/WindowManager(1133): Activity com.example.visit.record.My_Task has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@4054ce88 that was originally added here
01-01 11:38:15.149: E/WindowManager(1133): android.view.WindowLeaked: Activity com.example.visit.record.My_Task has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@4054ce88 that was originally added here
01-01 11:38:15.149: E/WindowManager(1133): at android.view.ViewRoot.<init>(ViewRoot.java:277)
01-01 11:38:15.149: E/WindowManager(1133): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
01-01 11:38:15.149: E/WindowManager(1133): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
01-01 11:38:15.149: E/WindowManager(1133): at android.view.Window$LocalWindowManager.addView(Window.java:433)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.Dialog.show(Dialog.java:288)
01-01 11:38:15.149: E/WindowManager(1133): at com.example.visit.record.My_Task$GetTaskDetails.onPreExecute(My_Task.java:139)
01-01 11:38:15.149: E/WindowManager(1133): at android.os.AsyncTask.execute(AsyncTask.java:391)
01-01 11:38:15.149: E/WindowManager(1133): at com.example.visit.record.My_Task.onStart(My_Task.java:118)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1225)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.Activity.performStart(Activity.java:3941)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1794)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1842)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038)
01-01 11:38:15.149: E/WindowManager(1133): at android.os.Handler.dispatchMessage(Handler.java:99)
01-01 11:38:15.149: E/WindowManager(1133): at android.os.Looper.loop(Looper.java:143)
01-01 11:38:15.149: E/WindowManager(1133): at android.app.ActivityThread.main(ActivityThread.java:4268)
01-01 11:38:15.149: E/WindowManager(1133): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 11:38:15.149: E/WindowManager(1133): at java.lang.reflect.Method.invoke(Method.java:507)
01-01 11:38:15.149: E/WindowManager(1133): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-01 11:38:15.149: E/WindowManager(1133): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-01 11:38:15.149: E/WindowManager(1133): at dalvik.system.NativeStart.main(Native Method)
请指导。我在new GetTaskDetails().execute()上遇到错误 ；并在 **tDialog.show();**GetTaskDetails 类的 PreExecute 上