我正在尝试从 ArrayList 中提取数据，但是我无法这样做。每次我尝试它都不会返回我正在寻找的值。当我尝试观看它时，我得到：
"nameArr" (id=830007853896)
"ApnArr" (id=830007853920)
"mmscArr" (id=830007888688)
当我在 Eclipse 的调试器中查看表达式窗口时 - 当我尝试从表达式窗口中复制和粘贴相同的值时（您可以在其中“观察”不同的值），我得到：
"nameArr" (pending)
"ApnArr" (pending)
"mmscArr" (pending)
...这不是它们应该包含的值。简而言之：问题是当我尝试运行应用程序时，由于我得到的空值而不断卡在我的 tryagain() 方法中，并且我无法弄清楚如何让它们正确填充。
附言
非常感谢任何调试提示/指针。
ConfigFinalActivity 源代码片段（完整代码显示在本页底部）：
/** Called when the activity is first created. */
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
int version = android.os.Build.VERSION.SDK_INT;
tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
update = new UpdateActivity();
//handler.setContext(this.getBaseContext());
getArrayLists();
/*
* boolean deleted = deleteFile("settings.xml");if(deleted){
* Log.v("settings.xml","deleted"); }else
* Log.v("settings.xml","failed to delete the file");
*/
if (ApnArr.isEmpty() || mmscArr.isEmpty()) {
tryagain();
} else
if (version < VERSION_CODES.ICE_CREAM_SANDWICH) {
// Update APN table
try {
result = updateTable();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}// Settings updated with this atomic call
catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (result != -1) {
status = "success";
} else {
status = "failure";
}
if (status.equals("success")) {
completeUpdate();
} else if (status.equals("failure")) {
tryagain();
}
} else {// ICS and later versions
// Reduce number of steps to 6
TotalSteps = 6;
setContentView(R.layout.assist_instructions);
String assistUpdate = getString(R.string.instructions_1);
CharSequence styledText = Html.fromHtml(assistUpdate);
TextView assistText = (TextView) findViewById(R.id.apn_app_text_cta2);
assistText.setText(styledText);
mAssistUpdateButton = (Button) findViewById(R.id.assist_update_btn);
mAssistUpdateButton.setOnClickListener(this);
}
}
private void getArrayLists() {
nameArr = update.getnameArr();
ApnArr = update.getApnArr();
mmscArr = update.getMMSCArr();
portArr = update.getPortArr();
count = update.getCount();
queryResult = update.getResult();
}
XMLParserHandlerFinal：
public class XmlParserHandlerFinal extends DefaultHandler {
public static String queryResult;
private String tagName="", Value="",result = "";
public ArrayList<String> NameArr = new ArrayList<String>();
public ArrayList<String> ValueArr = new ArrayList<String>();
public ArrayList<String> nameArr = new ArrayList<String>();
public ArrayList<String> ApnArr = new ArrayList<String>();
public ArrayList<String> mmscArr = new ArrayList<String>();
public ArrayList<String> mmsportArr = new ArrayList<String>();
public ArrayList<String> mmsproxyArr = new ArrayList<String>();
public ArrayList<String> portArr = new ArrayList<String>();
public ArrayList<String> proxyArr = new ArrayList<String>();
public ArrayList<ContentValues> ArrValues = new ArrayList<ContentValues>();
public ContentValues values = new ContentValues();
public int count = 0;
Context c;
private boolean isPhoneSettings = false, isSettings = false,
isName = false, isValue = false,isResult = false;
public XmlParserHandlerFinal() {
}
public void setContext(Context c) {
this.c = c;
}
@Override
public void startElement(String uri, String localName, String qName,
Attributes atts) {
if(qName.equals("message")){
isResult= true;
}
if (qName.equals("PhoneSettings")) {
isPhoneSettings = true;
}
if (qName.equals("setting")) {
isSettings = true;
}
if (localName.equals("name")) {
isName = true;
}
if (qName.equals("value")) {
isValue = true;
}
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
if(isResult){
isResult = false;
}
if (isPhoneSettings) {
isPhoneSettings = false;
}
if (isSettings) {
isSettings = false;
}
if (isName) {
isName = false;
}
if (isValue) {
isValue = false;
}
}
public void characters(char ch[], int start, int length)
throws SAXException {
if(isResult){
result = new String(ch, start, length);
Log.v("result",result);
}
if (isName) {
tagName = new String(ch, start, length);
NameArr.add(tagName);
}
if (isValue) {
Value = new String(ch, start, length);
ValueArr.add(Value);
values.put(tagName, Value);
if (tagName.equals("NAME")) {
Log.v("name",Value);
nameArr.add(Value);
} else if (tagName.equals("APN")) {
Log.v("Apn", Value);
ApnArr.add(Value);
} else if (tagName.equals("MMSC")) {
count++;
mmscArr.add(Value);
ArrValues.add(values);
Log.v("value", Value);
System.out.println("size " + ArrValues.size());
System.out.println("values " + values);
} else if (tagName.equals("PORT")) {
Log.v("port", Value);
portArr.add(Value);
} else
if (tagName.equals("APN Settings")) {
}
}
}
public String getQueryResponse(FileInputStream in) throws SAXException,
IOException {
try {
InputStream istream = in ;
SAXParserFactory spf = SAXParserFactory.newInstance();
Log.v("In the parser", "now");
SAXParser sp;
sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(this);
xr.parse(new InputSource(istream));
} catch (ParserConfigurationException e) {
Log.e("", "XML Handler Exception: " + e.toString());
}
return result;
}
public String getResult(){
return result;
}
public int getCount() {
return count;
}
public ArrayList<String> getNameArr() {
for (int i = 0; i <= NameArr.size() - 1; i++) {
System.out.println(NameArr.get(i));
}
return NameArr;
}
public ArrayList<String> getValueArr() {
for (int i = 0; i <= ValueArr.size() - 1; i++) {
System.out.println(ValueArr.get(i));
}
return ValueArr;
}
public ArrayList<String> getnameArr() {
for (int i = 0; i <= nameArr.size() - 1; i++) {
System.out.println(nameArr.get(i));
}
return nameArr;
}
public ArrayList<String> getApnArr() {
for (int i = 0; i <= ApnArr.size() - 1; i++) {
System.out.println(ApnArr.get(i));
}
return ApnArr;
}
public ArrayList<String> getMMSCArr() {
return mmscArr;
}
public ArrayList<String> getMmscProxyArr() {
return mmsproxyArr;
}
public ArrayList<String> getMmsPortArr() {
return mmsportArr;
}
public ArrayList<String> getProxyArr() {
return proxyArr;
}
public ArrayList<String> getPortArr() {
return portArr;
}
public ArrayList<ContentValues> getArrValuesArr() {
return ArrValues;
}
public void parser(UpdateActivity mainActivity) {
// TODO Auto-generated method stub
}
}
日志猫：
09-05 19:45:16.725: W/ActivityThread(5607): Application com.project.new.datasettings is waiting for the debugger on port 8100...
09-05 19:45:16.735: I/System.out(5607): Sending WAIT chunk
09-05 19:45:16.755: I/dalvikvm(5607): Debugger is active
09-05 19:45:16.935: I/System.out(5607): Debugger has connected
09-05 19:45:16.935: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:17.135: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:17.335: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:17.540: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:17.740: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:17.940: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:18.140: I/System.out(5607): waiting for debugger to settle...
09-05 19:45:18.355: I/System.out(5607): debugger has settled (1492)
09-05 19:45:18.535: D/dalvikvm(5607): GC_EXTERNAL_ALLOC freed 57K, 43% free 3084K/5379K, external 0K/0K, paused 50ms
09-05 19:45:18.595: D/dalvikvm(5607): GC_EXTERNAL_ALLOC freed 1K, 43% free 3085K/5379K, external 1K/513K, paused 50ms
09-05 19:45:18.670: D/dalvikvm(5607): GC_EXTERNAL_ALLOC freed 5K, 43% free 3091K/5379K, external 2167K/2538K, paused 28ms
09-05 19:45:18.685: I/System.out(5607): Sim State5
09-05 19:45:18.700: D/Network Availability(5607): CONNECTED
09-05 19:45:18.700: D/Network Availability(5607): NetworkInfo: type: mobile[UMTS], state: CONNECTED/CONNECTED, reason: gprsAttached, extra: wap.new, roaming: false, failover: false, isAvailable: true
09-05 19:45:18.805: D/CLIPBOARD(5607): Hide Clipboard dialog at Starting input: finished by someone else... !
09-05 19:45:19.990: D/ICCID(5607): 8901260832120867967
09-05 19:45:20.000: I/System.out(5607): ICCID%1234 = 587
09-05 19:45:20.000: I/System.out(5607): ICCID/1234 = 7213339410146570
09-05 19:45:20.045: D/dalvikvm(5607): GC_EXTERNAL_ALLOC freed 20K, 42% free 3130K/5379K, external 2664K/3205K, paused 40ms
09-05 19:45:20.090: I/url...(5607): https://wapgate.example.com/REST/phoneSettings
09-05 19:45:20.195: V/httpPost(5607): org.apache.http.client.methods.HttpPost@40538510
09-05 19:45:38.385: D/dalvikvm(5607): GC_FOR_MALLOC freed 132K, 42% free 3285K/5575K, external 4561K/5679K, paused 62ms
09-05 19:45:40.670: I/System.out(5607): response....org.apache.http.message.BasicHttpResponse@405246e8
09-05 19:45:40.670: V/response...(5607): org.apache.http.message.BasicHttpResponse@405246e8
09-05 19:45:40.705: V/In the parser(5607): now
09-05 19:45:40.720: W/System.err(5607): org.apache.harmony.xml.ExpatParser$ParseException: At line 1, column 0: no element found
09-05 19:45:40.725: W/System.err(5607): at org.apache.harmony.xml.ExpatParser.finish(ExpatParser.java:550)
09-05 19:45:40.725: W/System.err(5607): at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:480)
09-05 19:45:40.730: W/System.err(5607): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:318)
09-05 19:45:40.735: W/System.err(5607): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:275)
09-05 19:45:40.735: W/System.err(5607): at com.project.new.datasettings.XmlParserHandlerFinal.getQueryResponse(XmlParserHandlerFinal.java:176)
09-05 19:45:40.740: W/System.err(5607): at com.project.new.datasettings.UpdateActivity.success(UpdateActivity.java:535)
09-05 19:45:40.745: W/System.err(5607): at com.project.new.datasettings.UpdateActivity$NetworkTask.onPostExecute(UpdateActivity.java:490)
09-05 19:45:40.745: W/System.err(5607): at com.project.new.datasettings.UpdateActivity$NetworkTask.onPostExecute(UpdateActivity.java:1)
09-05 19:45:40.750: W/System.err(5607): at android.os.AsyncTask.finish(AsyncTask.java:417)
09-05 19:45:40.755: W/System.err(5607): at android.os.AsyncTask.access$300(AsyncTask.java:127)
09-05 19:45:40.755: W/System.err(5607): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
09-05 19:45:40.760: W/System.err(5607): at android.os.Handler.dispatchMessage(Handler.java:99)
09-05 19:45:40.765: W/System.err(5607): at android.os.Looper.loop(Looper.java:130)
09-05 19:45:40.765: W/System.err(5607): at android.app.ActivityThread.main(ActivityThread.java:3691)
09-05 19:45:40.765: W/System.err(5607): at java.lang.reflect.Method.invokeNative(Native Method)
09-05 19:45:40.765: W/System.err(5607): at java.lang.reflect.Method.invoke(Method.java:507)
09-05 19:45:40.765: W/System.err(5607): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
09-05 19:45:40.770: W/System.err(5607): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
09-05 19:45:40.770: W/System.err(5607): at dalvik.system.NativeStart.main(Native Method)
09-05 19:45:40.850: I/dalvikvm(5607): Failed resolving Lcom/new/project/datasettings/NotificationActivityForMultiProf; interface 26 'Landroid/content/ClipboardManager$OnPrimaryClipChangedListener;'
09-05 19:45:40.850: W/dalvikvm(5607): Link of class 'Lcom/new/project/datasettings/NotificationActivityForMultiProf;' failed
09-05 19:45:40.850: E/dalvikvm(5607): Could not find class 'com.project.new.datasettings.NotificationActivityForMultiProf', referenced from method com.project.new.datasettings.ConfigFinalActivity.showNotification
09-05 19:45:40.850: W/dalvikvm(5607): VFY: unable to resolve const-class 561 (Lcom/new/project/datasettings/NotificationActivityForMultiProf;) in Lcom/new/project/datasettings/ConfigFinalActivity;
09-05 19:45:40.850: D/dalvikvm(5607): VFY: replacing opcode 0x1c at 0x004b
09-05 19:45:40.850: D/dalvikvm(5607): VFY: dead code 0x004d-007f in Lcom/new/project/datasettings/ConfigFinalActivity;.showNotification ()V
09-05 19:45:50.815: I/dalvikvm(5607): threadid=4: reacting to signal 3
09-05 19:45:50.830: D/dalvikvm(5607): threadid=1: still suspended after undo (sc=1 dc=1)
09-05 19:45:50.830: I/dalvikvm(5607): Wrote stack traces to '/data/anr/traces.txt'
09-05 19:45:52.105: I/dalvikvm(5607): threadid=4: reacting to signal 3
09-05 19:45:52.110: D/dalvikvm(5607): threadid=1: still suspended after undo (sc=1 dc=1)
09-05 19:45:52.115: I/dalvikvm(5607): Wrote stack traces to '/data/anr/traces.txt'
完整来源（可能需要完全理解问题）：
https://docs.google.com/document/d/1lKnXL1R9f7S7EyYama9OgwoRiRcGRrpO8b-ZUqIPKL0/edit?usp=sharing