我想在backgroud中下载表的数据，所以我使用了AsyncTask.preoblem是当按钮点击它应该开始下载。
我认为按钮点击功能存在一些问题，因为我将另一个活动称为onNextAction()＆amp;其他Activity的onCreate（）调用了AsyncTask，那时我也得到了同样的错误。
它说LocalActivityManager没有启动
OR可能会出现问题：它在ActivityGroup内运行......
在ActivityGroup里面如何调用AsyncTask？
错误的地方是
@Override
protected void onPreExecute() {
this.dialog.setMessage("Downloading Table Data.......");
this.dialog.show();
myProgress = 0;
}
错误是：
08-22 10:22:18.935: ERROR/AndroidRuntime(448): FATAL EXCEPTION: main
08-22 10:22:18.935: ERROR/AndroidRuntime(448): java.lang.IllegalStateException: Could not execute method of the activity
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.View$1.onClick(View.java:2144)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.View.performClick(View.java:2485)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.View$PerformClick.run(View.java:9080)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.os.Handler.handleCallback(Handler.java:587)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.os.Handler.dispatchMessage(Handler.java:92)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.os.Looper.loop(Looper.java:123)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.app.ActivityThread.main(ActivityThread.java:3683)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at java.lang.reflect.Method.invokeNative(Native Method)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at java.lang.reflect.Method.invoke(Method.java:507)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at dalvik.system.NativeStart.main(Native Method)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): Caused by: java.lang.reflect.InvocationTargetException
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at java.lang.reflect.Method.invokeNative(Native Method)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at java.lang.reflect.Method.invoke(Method.java:507)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.View$1.onClick(View.java:2139)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): ... 11 more
08-22 10:22:18.935: ERROR/AndroidRuntime(448): Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@4052e998 is not valid; is your activity running?
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.ViewRoot.setView(ViewRoot.java:527)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.view.Window$LocalWindowManager.addView(Window.java:424)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.app.Dialog.show(Dialog.java:241)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at com.xont.controller.admin.ListRoutesActivity$DailyDownldAsyncTask.onPreExecute(ListRoutesActivity.java:515)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at android.os.AsyncTask.execute(AsyncTask.java:391)
08-22 10:22:18.935: ERROR/AndroidRuntime(448): at com.xont.controller.admin.ListRoutesActivity.onNextAction(ListRoutesActivity.java:139)
这是我对该活动的完整代码;
public class ListRoutesActivity extends Activity {
//variable declaration ....
// Service URL & methods
public static final String APPURL = "http://192.168.1.213:7986/XontService";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String METHOD_TABLEDATA = "LoadDownLoadTablesDataJson";
private static String SOAP_ACTION1 = "http://tempuri.org/IXontService/LoadDownLoadTablesDataJson";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.daily_download_route);
SharedPreferences myPrefs = this.getSharedPreferences("myLogedPrefs",MODE_WORLD_READABLE);
strBusinessUnit = myPrefs.getString("BusinessUnit", "");
strExecutive = myPrefs.getString("Executive", "");
strTerritoryCode = myPrefs.getString("TerritoryCode", "");
tl = (TableLayout) findViewById(R.id.dailyDRoute);
routeList = getSalesRoute();
for (int i = 0; i < routeList.size(); i++) {
TableRow tr = new TableRow(this);
CheckBox ch = new CheckBox(this);
ch.setHeight(1);
ch.setId(i);
TextView tv2 = new TextView(this);
tr.addView(ch);
tv2.setText(routeList.get(i).getDescription());
tv2.setTextColor(Color.BLACK);
ch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
if(arg0.isChecked()){
selectedRoutes.add(routeList.get(arg0.getId()).getRouteCode());
}else {
selectedRoutes.remove(routeList.get(arg0.getId()));
}
}
});
tr.addView(tv2);
tl.addView(tr);
}
}
public void deselectAll(View view){
for (int i = 0; i < tl.getChildCount(); i++) {
CheckBox cb = (CheckBox)((TableRow)tl.getChildAt(i)).getChildAt(0);
cb.setChecked(false);
}
}
public void selectAll(View view){
for (int i = 0; i < tl.getChildCount(); i++) {
CheckBox cb = (CheckBox)((TableRow)tl.getChildAt(i)).getChildAt(0);
cb.setChecked(true);
}
}
public void onCancelAction(View view){
SettingActivityGroup.group.back();
return;
}
public void onNextAction(View view){
if(selectedRoutes.size() > 0){
StringBuffer routeCode = new StringBuffer();
for(int i=0; i<selectedRoutes.size();i++){
routeCode.append("\'" + selectedRoutes.get(i) +"\'" +",");
}
routeCode.delete(routeCode.length() - 1,routeCode.length());
strUField1 = routeCode.toString();
// new DailyDownldAsyncTask().execute();
// String s = new DownlaodTableActivity().loadDailyDownloadData(strBusinessUnit, strExecutive,strTerritoryCode,strUField1);
// System.out.println(" ---s - " + s);
new DailyDownldAsyncTask().execute();
// Intent i = new Intent(getBaseContext(), DownlaodTableActivity.class);
// Bundle bundle = new Bundle();
// bundle.putString("strRouteCode", strUField1);
// bundle.putString("name", "ListRoutesActivity");
// i.putExtras(bundle);
// View vi = SettingActivityGroup.group.getLocalActivityManager().startActivity(
// "ListRoutesActivity", i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
// .getDecorView();
//
// SettingActivityGroup.group.replaceView(vi);
}else{
Toast.makeText(ListRoutesActivity.this,"Please select the Route!",Toast.LENGTH_SHORT).show();
}
return;
}
public String loadDailyDownloadData(String strBusinessUnit, String strExecutive, String strTerritoryCode,String strUField1){
SoapPrimitive responsePrimitiveData;
String downloadResult = "";
dailyDownTable = "LoadTarget";
String actualtable = "";
StringBuffer sucessDownTable = new StringBuffer();
try {
responsePrimitiveData = soapPrimitiveData(dailyDownTable,strBusinessUnit, strExecutive, strTerritoryCode,strUField1);
if (responsePrimitiveData != null) {
try {
String result = responsePrimitiveData.toString();
if(!result.equals("")){
JSONObject jsonobject = new JSONObject(result);
for(int x = 0; x < jsonFilter.length; x++){
Log.i("loadDailyDownloadData", "-- " + x);
JSONArray array = jsonobject.getJSONArray(jsonFilter[x]); // return [name:value]
boolean isRecordAvailable = false;
String updateType = getTableUpdateType(dailyDownTable);
if(array.length()>0){
// actual table assignment
if(jsonFilter[x].equals("OutStanding1")){
actualtable = "WMOutstandingInvoice";
}else if(jsonFilter[x].equals("PDCheque1")){
actualtable = "WMPDCheque";
}else if(jsonFilter[x].equals("ReturnCheque1")){
actualtable = "WMReturnCheque";
}else if(jsonFilter[x].equals("Target1")){
actualtable = "WMRetailerTarget";
}
if(!updateType.equals("3")){
//check table whether its contain records or not
isRecordAvailable = isTableRecords(dailyDownTable);
}
// delete the retailer who are attached to selected routes
deleteRetailerRecords(actualtable, strUField1);
// check the update type. 1 =Insert , 2= Update , 3=Delete
if (updateType.equals("1")) {
String[] strWhereField = getTablePrimaryKey(dailyDownTable,strBusinessUnit);
saveOrUpdate(actualtable,array,isRecordAvailable,strWhereField);
} else if (updateType.equals("2")) {
String[] strWhereField = getTablePrimaryKey(dailyDownTable,strBusinessUnit);
saveOrUpdate(actualtable,array,isRecordAvailable,strWhereField);
}else if(updateType.equals("3")){
deleteTableAllRecords(actualtable);
String[] strWhereField = new String[0];
saveOrUpdate(actualtable, array,isRecordAvailable,strWhereField);
}
if(x == 3){
sucessDownTable.append(actualtable);
}else{
sucessDownTable.append(actualtable + ",");
}
}
}
}
downloadResult = sucessDownTable.toString();
} catch (JSONException e) {
Log.i("Error" ,"Error on loadDailyDownloadData()"+ e.getMessage() );
e.printStackTrace();
}
}else{
downloadResult = "";
}
} catch (IOException e) {
Log.i("Error" ,"Error on loadDailyDownloadData()"+ e.getMessage() );
e.printStackTrace();
} catch (XmlPullParserException e) {
Log.i("Error" ,"Error on loadDailyDownloadData()"+ e.getMessage() );
e.printStackTrace();
}
Log.i("--------"," --- sucessDownTable--" + sucessDownTable);
Log.i("***" ,dailyDownTable);
return downloadResult;
}
public class DailyDownldAsyncTask extends
AsyncTask<String, Integer, String> {
private final ProgressDialog dialog = new ProgressDialog(
ListRoutesActivity.this);
int myProgress;
@Override
protected void onPostExecute(String result) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
Toast.makeText(ListRoutesActivity.this,
"Download LoadTarget has been successfully",
Toast.LENGTH_SHORT).show();
Intent i = new Intent(getBaseContext(),
DailyDownloadTargetActvity.class);
View vi = SettingActivityGroup.group
.getLocalActivityManager()
.startActivity("DailyDownloadTargetActvity",
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
.getDecorView();
SettingActivityGroup.group.replaceView(vi);
}
@Override
protected void onPreExecute() {
this.dialog.setMessage("Downloading Table Data.......");
this.dialog.show();
myProgress = 0;
}
@Override
protected String doInBackground(String... params) {
loadDailyDownloadData(strBusinessUnit, strExecutive,
strTerritoryCode, strUField1);
return null;
}
@Override
protected void onProgressUpdate(Integer... values) {
dialog.setProgress(values[0]);
}
}
错误的地方是onNextAction()＆amp; onPreExecute()的{{1}}
我的问题是
我知道活动没有开始.....为什么没有开始？我在相同的活动中调用一切而不是不同的活动......
请帮帮我......
提前致谢....
答案 0 :(得分：8)
我使用这个链接完成了这个.... Android: AsyncTask ProgressDialog will not open in ActivityGroup
在活动类中为此创建一个帮助方法：
private Context getDialogContext() {
Context context;
if (getParent() != null) context = getParent();
else context = this;
return context;
}
然后更改行
private final ProgressDialog dialog = new ProgressDialog(CheckInActivity.this);
到
private final ProgressDialog dialog = new ProgressDialog(getDialogContext());