强制关闭有很多错误[重复]
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【中文标题】强制关闭有很多错误[重复]【英文标题】：Force closes with lots of error [duplicate] 【发布时间】：2013-04-09 08:04:53 【问题描述】：谁能告诉我，这里有什么问题？我一直在尝试一整天。我是 android 新手，我也不擅长阅读 logcat，因此，我真的希望有人能帮助我。应用力一直关闭。
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> eventsList;
// url to get all products list
private static String url_all_products = "http://xx.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_CUSTOMER = "customer";
private static final String TAG_PID = "pid";
private static final String TAG_FIRSTNAME = "firstname";
private static final String TAG_LASTNAME = "lastname";
private static final String TAG_ADDRESS = "address";
private static final String TAG_TOTALCOST = "totalCost";
// products JSONArray
JSONArray events = null;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_customer_transaction);
// Hashmap for ListView
eventsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, String, String>
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute()
super.onPreExecute();
pDialog = new ProgressDialog(CustomerTransaction.this);
pDialog.setMessage("Loading. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
/**
* getting All products from url
* */
protected String doInBackground(String... args)
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1)
// products found
// Getting Array of Products
events = json.getJSONArray(TAG_CUSTOMER);
// looping through All Products
for (int i = 0; i < events.length(); i++)
JSONObject c = events.getJSONObject(i);
// Storing each json item in variable
String pid = c.getString(TAG_PID);
String firstname = c.getString(TAG_FIRSTNAME);
String lastname = "Time :" +c.getString(TAG_LASTNAME);
String address = "Date :" +c.getString(TAG_ADDRESS);
String totalCost = "Venue :" +c.getString(TAG_TOTALCOST);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_PID, pid);
map.put(TAG_FIRSTNAME, firstname);
map.put(TAG_LASTNAME, lastname);
map.put(TAG_ADDRESS, address);
map.put(TAG_TOTALCOST, totalCost);
// adding HashList to ArrayList
eventsList.add(map);
catch (JSONException e)
e.printStackTrace();
return null;
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url)
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable()
public void run()
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
CustomerTransaction.this, eventsList,
R.layout.list_item4, new String[] TAG_PID,TAG_FIRSTNAME, TAG_LASTNAME, TAG_ADDRESS, TAG_TOTALCOST,
new int[] R.id.pid, R.id.firstname, R.id.lastname, R.id.address, R.id.totalCost );
// updating listview
setListAdapter(adapter);
);
日志猫：
04-16 18:34:22.706: E/WindowManager(1019): Activity com.spyraa.bookstore.CustomerTransaction has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView40d2c1e8 V.E..... R.....ID 0,0-304,96 that was originally added here
04-16 18:34:22.706: E/WindowManager(1019): android.view.WindowLeaked: Activity com.spyraa.bookstore.CustomerTransaction has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView40d2c1e8 V.E..... R.....ID 0,0-304,96 that was originally added here
04-16 18:34:22.706: E/WindowManager(1019): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
04-16 18:34:22.706: E/WindowManager(1019): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
04-16 18:34:22.706: E/WindowManager(1019): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.Dialog.show(Dialog.java:281)
04-16 18:34:22.706: E/WindowManager(1019): at com.spyraa.bookstore.CustomerTransaction$LoadAllProducts.onPreExecute(CustomerTransaction.java:84)
04-16 18:34:22.706: E/WindowManager(1019): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
04-16 18:34:22.706: E/WindowManager(1019): at android.os.AsyncTask.execute(AsyncTask.java:534)
04-16 18:34:22.706: E/WindowManager(1019): at com.spyraa.bookstore.CustomerTransaction.onCreate(CustomerTransaction.java:61)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.Activity.performCreate(Activity.java:5104)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-16 18:34:22.706: E/WindowManager(1019): at android.os.Handler.dispatchMessage(Handler.java:99)
04-16 18:34:22.706: E/WindowManager(1019): at android.os.Looper.loop(Looper.java:137)
04-16 18:34:22.706: E/WindowManager(1019): at android.app.ActivityThread.main(ActivityThread.java:5039)
04-16 18:34:22.706: E/WindowManager(1019): at java.lang.reflect.Method.invokeNative(Native Method)
04-16 18:34:22.706: E/WindowManager(1019): at java.lang.reflect.Method.invoke(Method.java:511)
04-16 18:34:22.706: E/WindowManager(1019): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-16 18:34:22.706: E/WindowManager(1019): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-16 18:34:22.706: E/WindowManager(1019): at dalvik.system.NativeStart.main(Native Method)
非常感谢。
【问题讨论】：
如果您还有其他问题，请将其作为另一个问题发布。 【参考方案1】：这样使用请求
HttpPost httpost = new HttpPost(url_all_products);
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("test1","test1" ));
nvps.add(new BasicNameValuePair("test2", "test2" ));
httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
response = getResponse(httpost);
【讨论】：
嗯..不太明白。除了 test1 和 test 2，我还应该放什么？ 如果你有参数然后添加，否则离开它。【参考方案2】：我看到了几个问题。第一个我认为是造成你的问题。将您的进度条初始化移出onPreExecute() 到类声明中
class LoadAllProducts extends AsyncTask<String, String, String>
pDialog = new ProgressDialog(CustomerTransaction.this); // move to here so you can cancel in onPostExecute()
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute()
super.onPreExecute();
在onPostExecute() 中不需要runOnUiThread，因为此方法在UI 线程上运行。您在onPostExecute() 中使用了一个参数，但似乎没有从doInBackground() 返回任何内容。可能还有更多问题，但我会先尝试这些事情，看看你会得到什么
了解如何使用 logcat 非常重要。在这里，它告诉您一个窗口已泄漏，我认为这是由您初始化 progressbar 的位置引起的。通常你会看到一行写着“由空指针异常引起”或其他异常。当您找到此行时，引用您的项目的第一行
at com.spyraa.bookstore.CustomerTransaction$LoadAllProducts.onPreExecute(CustomerTransaction.java:84)
例如，会告诉你第 84 行是你的错误发生的地方。这通常是开始寻找的好地方。希望这会有所帮助
【讨论】：
是的，知道了。谢谢。 不，有问题。如果这对您有帮助，请接受 它有所帮助，但显示更多错误。 :(你能帮我解决吗？ 没有看到更新的 logcat 和新错误的相关代码...... 我在问题中更新为logcat以上是关于强制关闭有很多错误[重复]的主要内容，如果未能解决你的问题，请参考以下文章