我有一个列表视图。在单击列表视图时会调用一个意图。。但是当我反复执行OnListItemClick时，会引发StackOverflowError
我的代码是：
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
Cursor cursor = (Cursor) lAdapter.getItem(position);
final String lpn = cursor.getString(cursor
.getColumnIndex(SQLHelper.EMPLOYEE_LPN));
System.out.println("EMPLOYEE_LPN : " + lpn);
final Context con = this;
final ProgressDialog empDialog = ProgressDialog.show(this, "", "Loading Employee Details ....");
empDialog.setIcon(R.drawable.icon64);
empDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
empDialog.show();
Thread mBackground = new Thread() {
@Override
public void run() {
try{
// preparing a looper on current thread the current thread is being detected implicitly
Looper.prepare();
DirectoryApp appState = (DirectoryApp) getApplicationContext();
Object[][] requestArray = new Object[][] {{"lpn",lpn}};
SOAPHelper soapHelper = new SOAPHelper();
String result = soapHelper.getHttpTransportResponse(
appState.getNAMESPACE_DIRECTORY(), "",
appState.getMETHOD_NAME_GET_EMPLOYEE_DETAILS(), appState.getURL_EYDIRECTORY_SERVICE(), requestArray);
if(result.equals("")){
Toast.makeText(ListContacts.this, getString(R.string.connErr),
Toast.LENGTH_LONG).show();
}
else{
Intent intentEmp = new Intent(con,
EmployeeDetails.class);
intentEmp.putExtra("result",
result);
startActivity(intentEmp);
}
empDialog.dismiss();
handler.sendEmptyMessage(1);
}
catch (Exception e) {
empDialog.dismiss();
Bundle bundle = new Bundle();
bundle.putInt("flag", 0);
Message message = new Message();
message.setData(bundle);
handler.sendMessage(message);
}
}
};
// start the background thread
mBackground.start();
Looper.loop();
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
int flag = msg.getData().getInt("flag");
switch (flag) {
case 0:
Toast.makeText(ListContacts.this, getString(R.string.connErr),
Toast.LENGTH_LONG).show();
break;
case 1:
break;
default:
Toast.makeText(ListContacts.this, getString(R.string.connErr),
Toast.LENGTH_LONG).show();
}
}
};
唯一的例外是：
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): FATAL EXCEPTION: main
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): java.lang.StackOverflowError
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6739)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AbsListView.dispatchDraw(AbsListView.java:1365)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.ListView.dispatchDraw(ListView.java:3046)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6845)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AbsListView.draw(AbsListView.java:2257)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6742)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6742)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.FrameLayout.draw(FrameLayout.java:352)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6742)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.FrameLayout.draw(FrameLayout.java:352)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.View.draw(View.java:6742)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.FrameLayout.draw(FrameLayout.java:352)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1872)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewRoot.draw(ViewRoot.java:1449)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewRoot.performTraversals(ViewRoot.java:1194)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.view.ViewRoot.handleMessage(ViewRoot.java:1771)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.dispatchMessage(Handler.java:99)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Looper.loop(Looper.java:144)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at org.sipdroid.sipua.ui.ListContacts.onListItemClick(ListContacts.java:381)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.app.ListActivity$2.onItemClick(ListActivity.java:345)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AdapterView.performItemClick(AdapterView.java:284)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.ListView.performItemClick(ListView.java:3382)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.handleCallback(Handler.java:587)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.dispatchMessage(Handler.java:92)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Looper.loop(Looper.java:144)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at org.sipdroid.sipua.ui.ListContacts.onListItemClick(ListContacts.java:381)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.app.ListActivity$2.onItemClick(ListActivity.java:345)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AdapterView.performItemClick(AdapterView.java:284)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.ListView.performItemClick(ListView.java:3382)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.handleCallback(Handler.java:587)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.dispatchMessage(Handler.java:92)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Looper.loop(Looper.java:144)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at org.sipdroid.sipua.ui.ListContacts.onListItemClick(ListContacts.java:381)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.app.ListActivity$2.onItemClick(ListActivity.java:345)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AdapterView.performItemClick(AdapterView.java:284)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.ListView.performItemClick(ListView.java:3382)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.handleCallback(Handler.java:587)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Handler.dispatchMessage(Handler.java:92)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at android.os.Looper.loop(Looper.java:144)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at org.sipdroid.sipua.ui.ListContacts.onListItemClick(ListContacts.java:381)
07-27 12:39:38.566: ERROR/AndroidRuntime(6694): at
最佳答案
我认为您的Looper.loop()调用在错误的线程中运行-它在onListItemClick()方法中，因此它在“前景”线程的上下文中运行。因此，onListItemClick()永不返回，随后对其的调用只会建立堆栈。
我认为它应该在run()子句之前的mBackground线程的catch方法中。
另外，我对使用Looper的了解不多，但是我看不到要退出该Looper的地方。
关于android - 重复执行OnListItemClick时，为什么会在Android上收到StackOverflowError？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/6840701/