我正在向数据库添加新用户（SQLite数据库）。当我单击按钮创建用户时，我正在使用doInBackground。当我连接到WCF Web服务时它工作正常。我转而使用SQLite数据库，但是没有执行asyncTask的doInBackground方法。所有更改都在AddUser（）方法中进行。没有异常被抛出，并且logcat中没有任何异常。我在这里做错了什么？
// Onclick事件代码：
if(!(username.matches("") && password.matches("")&& firstName.matches("") && lastName.matches("")))
{
userNameRequired.setVisibility(View.INVISIBLE);
passwordRequired.setVisibility(View.INVISIBLE);
firstNameRequired.setVisibility(View.INVISIBLE);
lastNameRequired.setVisibility(View.INVISIBLE);
try
{
new Thread(
new Runnable() {
@Override
public void run() {
**This is where it stops and does nothing.**
new createNewUserAsyncTask().execute();
}
}
).start();
}catch(Exception ex)
{
Log.i("Error message", ex.getMessage());
}
//这是AsyncTask类
public class createNewUserAsyncTask extends AsyncTask<Void,Void,Boolean>
{
@Override
protected Boolean doInBackground(Void... voids) {
return AddUser(); //I added a breakpoint here, and it never reached it.
}
**//Method where the changes were made.**
private Boolean AddUser()
{
try
{
db = dbHelper.getReadableDatabase();
ContentValues contentValue = new ContentValues();
contentValue.put(dbHelper.PERSONFIRSTNAME, firstName);
contentValue.put(dbHelper.PERSONLASTNAME, lastName);
contentValue.put(dbHelper.PERSONMIDDLEINITIAL, middleNAme);
contentValue.put(dbHelper.PERSONADDRESS1, address);
contentValue.put(dbHelper.PERSONCITY, city);
contentValue.put(dbHelper.PERSONSTATE, state);
contentValue.put(dbHelper.PERSONZIPCODE, zipcode);
contentValue.put(dbHelper.PERSONHOMENUMBER, homeNumber);
contentValue.put(dbHelper.PERSONCELLNUMBER, cellNumber);
contentValue.put(dbHelper.PERSONEMAILADDRESS, emailAddress);
contentValue.put(dbHelper.PERSONADDITIONALEMAILADDRESS, additionalEmail);
db.insert(dbHelper.PERSON_TABLE, null, contentValue);
Cursor cursor = db.rawQuery("SELECT last_insert_rowid() from "+ dbHelper.PERSON_TABLE, null);
cursor.moveToFirst();
int id = cursor.getInt(0);
cursor.close();
if(id > 0)
{
String date = DateCreated();
contentValue = new ContentValues();
contentValue.put(dbHelper.USERSUSERNAME, username);
contentValue.put(dbHelper.USERSPASSWORD, password);
contentValue.put(dbHelper.USERSDATECREATED, date);
contentValue.put(dbHelper.USERSPERSONID, id);
db.insert(dbHelper.USERS_TABLE, null, contentValue);
return true;
}
}catch (Exception e)
{
Log.i("Error message: ", e.getMessage());
}
return false;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
if(aBoolean == true)
{
userIsCreated = aBoolean;
Intent intent = new Intent(NewUser.this, Login.class);
startActivity(intent);
}
}
}
这是logcat
09-17 19:31:17.400 1086-1086/com.mb.progressnfit I/Choreographer: Skipped 3040 frames! The application may be doing too much work on its main thread.
09-17 19:31:43.759 639-679/com.android.exchange D/ExchangeService: Received deviceId from Email app: null
09-17 19:31:43.759 639-679/com.android.exchange D/ExchangeService: !!! deviceId unknown; stopping self and retrying
09-17 19:31:48.816 639-847/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onCreate
09-17 19:31:48.826 639-639/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onStartCommand, startingUp = false, running = false
09-17 19:31:48.826 277-450/system_process W/ActivityManager: Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
09-17 19:31:48.826 639-696/com.android.exchange D/ExchangeService: !!! Email application not found; stopping self
09-17 19:31:48.836 277-289/system_process W/ActivityManager: Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
09-17 19:31:48.836 639-639/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false
09-17 19:31:48.856 639-639/com.android.exchange E/ActivityThread: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1dcc8 that was originally bound here
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1dcc8 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
09-17 19:31:48.987 639-639/com.android.exchange E/StrictMode: null
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1dcc8 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
09-17 19:31:48.987 277-277/system_process W/ActivityManager: Unbind failed: could not find connection for android.os.BinderProxy@40e47718
09-17 19:31:49.076 639-639/com.android.exchange E/ActivityThread: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1d920 that was originally bound here
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1d920 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
09-17 19:31:49.076 639-639/com.android.exchange E/StrictMode: null
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d1d920 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
09-17 19:31:49.096 277-465/system_process W/ActivityManager: Unbind failed: could not find connection for android.os.BinderProxy@40ef0ce8
09-17 19:31:49.096 639-641/com.android.exchange D/dalvikvm: GC_CONCURRENT freed 459K, 20% free 2500K/3104K, paused 80ms+88ms, total 240ms
09-17 19:32:33.837 639-696/com.android.exchange D/ExchangeService: Received deviceId from Email app: null
09-17 19:32:33.837 639-696/com.android.exchange D/ExchangeService: !!! deviceId unknown; stopping self and retrying
09-17 19:32:38.908 639-682/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onCreate
09-17 19:32:38.916 639-639/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onStartCommand, startingUp = false, running = false
09-17 19:32:38.916 277-462/system_process W/ActivityManager: Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
09-17 19:32:38.916 639-847/com.android.exchange D/ExchangeService: !!! Email application not found; stopping self
09-17 19:32:38.926 277-450/system_process W/ActivityManager: Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
09-17 19:32:38.926 639-639/com.android.exchange D/ExchangeService: !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false
09-17 19:32:38.946 639-639/com.android.exchange E/ActivityThread: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40ceaf88 that was originally bound here
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40ceaf88 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
09-17 19:32:38.987 639-639/com.android.exchange E/StrictMode: null
android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40ceaf88 that was originally bound here
at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
at android.app.ContextImpl.bindService(ContextImpl.java:1418)
at android.app.ContextImpl.bindService(ContextImpl.java:1407)
at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
答案 0 :(得分：2)
更改代码以取出Thread和Runnable
if(!(username.matches("") && password.matches("")&& firstName.matches("") && lastName.matches("")))
{
userNameRequired.setVisibility(View.INVISIBLE);
passwordRequired.setVisibility(View.INVISIBLE);
firstNameRequired.setVisibility(View.INVISIBLE);
lastNameRequired.setVisibility(View.INVISIBLE);
**This is where it stops and does nothing.**
new createNewUserAsyncTask().execute();
AsyncTask必须在UI
According to the Docs 4个线程规则中的一个（实际上是第一个）是
必须在UI线程上加载AsyncTask类。这是从JELLY_BEAN开始自动完成的。