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How to programmatically get all neighbor cells info?

I am creating an android app with signal info and I want to have access in android libraries through which can see all the neighbor cells as the image I have below. Does anybody know how I can it?
I have tried the code below but the result it isn't that I want
List<NeighboringCellInfo> NeighboringList = tm.getNeighboringCellInfo();
String stringNeighboring = "Lac : Cid : RSSI\n";
for(int i=0; i < NeighboringList.size(); i++){
String dBm;
int rssi = NeighboringList.get(i).getRssi();
if(rssi == NeighboringCellInfo.UNKNOWN_RSSI){
dBm = "Unknown RSSI";
}else{
dBm = String.valueOf(-113 + (2 * rssi)) + " dBm";
}
stringNeighboring = stringNeighboring + String.valueOf(NeighboringList.get(i).getLac()) +" : " + String.valueOf(NeighboringList.get(i).getCid()) +" : " + dBm +"\n";
}

Tapestry t:palette NPE when options selected

I have a palette who's model is populated by a user search of customers. This works perfectly when searching initially, however once a customer is selected and the user continues to search for more customers to select a NPE is thrown.
Code from .tml
<t:palette t:id="custSelect" model="customerModel" t:encoder="stringValueEncoder"
availableLabel="Search Results" t:selected="custSelected" value="custSelected">
${custSelected}
</t:palette>
Coresponding .java
Object listResults(List<TbgWebIntCustomer> customers) {
log.debug("LISTRESULTS");
customerList = new ArrayList<String>();
if (customerList != null) {
customerList.clear();
if (request.isXHR()) {
ajaxResponseRenderer.addRender(resultZone);
}
}
String result;
log.debug("LISTRESULTS2 " + customers.size());
for (int i = 0; i <= customers.size() - 1; i++) {
log.debug("counter: " + i);
TbgWebIntCustomer currentCustomer = customers.get(i);
String customerNumber = currentCustomer.getCustomerId();
// Remove leading zeros
String customerName = currentCustomer.getLocationName();
result = customerNumber + " - " + customerName + " - "
+ currentCustomer.getCity();
log.debug(result);
customerList.add(result);
}
log.debug("LISTRESULTS3");
log.debug("customer list size: " + customerList.size());
getCustomerModel();
log.debug("customermodel after customerlist: "
+ getCustomerModel().size());
if (customerList.size() == 100) {
resultsMessage = "Search returned over 100 results. Showing top 100.";
log.debug(resultsMessage);
} else {
String numResults = Integer.toString(customerList.size());
resultsMessage = "Search returned " + numResults + " customers";
log.debug(resultsMessage);
}
log.debug("LISTRESULTS4");
log.debug("customerModel returns at i 0: " + getCustomerModel().get(0));
return request.isXHR() ? resultZone.getBody() : null;
}
Note: getCustomerModel() returns getCustomerList().
I understand that NPEs in Palette happen when one of the selected options is not present in the model you passed to it however I can't identify where it is I'm doing this. I can post setupRender() code if necessary, just trying to keep OP compact.

public static runtime incremental change - android

I have a simple class named A which has two private fields.
public class A {
private String a;
private String b;
} // A
When I get all declared fields from class instance, I get one extra field named $change of type com.android.tools.fd.runtime.IncrementalChange. Where is it coming from ? I am totally not getting this.
Field[] fields = cls.getDeclaredFields();
for (int i = 0, len = fields.length; i < len; i++) {
Field field = fields[i];
field.setAccessible(true);
Log.d("TAG", field.getName());
if (field.isAnnotationPresent(Primary.class)) {
query += getFromalName(field.getName()).toUpperCase() + " " + getSchemaType(field.getType().getSimpleName()) + " PRIMARY KEY, ";
continue;
}
if (field.isAnnotationPresent(NotNull.class)) {
query += getFromalName(field.getName()) + " " + getSchemaType(field.getType().getSimpleName()) + " NOT NULL, ";
continue;
}
query += getFromalName(field.getName()) + " " + getSchemaType(field.getType().getSimpleName()) + ", ";
} // end for
query = query.substring(0, query.lastIndexOf(","));
query += " )";

It was added to support instant run. Disabling instant run solved the problem. here
is the link to android issue tracker

How to generate a PNG image from a dot file format with Graphviz

I have a java class that implements a priority queue. Then I have a class test that generates a graph like this:
digraph G {
Milan (0.0) -> Turin (1.2)
Milan (0.0) -> Montreal (7.0)
Turin (1.2) -> Paris (5.8)
Turin (1.2) -> Tokyo (2.2)
}
This graph is saved in a file called "queue".
Now I wish that this graph was displayed in a PNG image using Graphviz.
So the last call of my test files (after you have created and filled the queue with priority) is:
queue.toString("queue");
All right. The toString method is the following:
public void toString(String fileDot){
try {
FileOutputStream file = new FileOutputStream(fileDot);
PrintStream Output = new PrintStream(file);
Output.print(this.printQueue());
Output.close();
File f = new File(fileDot);
String arg1 = f.getAbsolutePath();
String arg2 = arg1 + ".png";
String[] c = {"dot", "-Tpng", arg1, "-o", arg2};
Process p = Runtime.getRuntime().exec(c);
int err = p.waitFor();
}
catch(IOException e1) {
System.out.println(e1);
}
catch(InterruptedException e2) {
System.out.println(e2);
}
}
private String printQueue() throws IOException {
String g = new String("");
char c = '"';
g = g.concat("digraph G {\n");
if(isEmpty())
g = g.concat(" " + "Empty priority queue.");
else {
for(int i = 0; i < lastIndex; i++) {
if(heap[2 * i] != null) {
g = g.concat("" + heap[i].elem + " (" + heap[i].prior + ") " + " " + " -> " + " " + "" + heap[i * 2].elem + " (" + heap[i * 2].prior + ") \n" );
if(heap[2 * i + 1] != null)
g = g.concat("" + heap[i].elem + " (" + heap[i].prior + ") " + " " + " -> " + " " + "" + heap[i * 2 + 1].elem + " (" + heap[i * 2 + 1].prior + ") \n" );
}
} //end for
} //end else
g = g.concat("}");
return g;
}
Why is not generated image .png? Where am I wrong?
Of course I installed Graphviz.
Thanks

When I ran the .dot file above through dot at the command line, I got:
$ dot -Tpng queue.dot -oqueue.png
Warning: queue.dot:2: syntax error in line 2 near '('
Thus, the parenthesised numbers in the node names are not valid in dot syntax. If you remove them, I expect the .png file would be created successfully. If you need the parenthesised numbers in your output, I suggest looking up node labels in the GraphViz documentation.
I'd also note that toString() does not seem like a particularly clear name for a function that creates a .png file so changing the name of the function might be advisable.

Try using dot's -O option instead of -o. According to dot -? here's what it does:
Automatically generate an output filename based on the input filename with a .'format' appended. (Causes all -ofile options to be ignored.)
So you could change
String[] c = {"dot", "-Tpng", arg1, "-o", arg2};
to
String[] c = {"dot", "-Tpng", arg1, "-O"};

Parsing Javascript in Java, Javascript Objects

I am trying to parse a Javascript file using ScriptEngine in Java. I am not interested in executing scripts, just parsing it to get some values.
The script files are comprised of a series of arrays with this structure:
var array= new Array();
array[0]=new Array();
array[0]['point']=new Point2D(2.454,-8.33);
array[0]['name']='Object 1';
array[1]=new Array();
array[1]['point']=new Point2D(42.84, 3.53);
array[1]['name']='Object 2';
...
with Point2D defined as:
function Point2D(x,y) {
this.x = x;
this.y = y;
}
So far I've parsed the script with this code:
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine se = mgr.getEngineByName("JavaScript");
try {
se.eval(file);
NativeArray array = (NativeArray)se.get("array");
for(int i = 0; i < array.getLength(); i++){
if(array.get(i)!=null){
NativeArray elementArray = (NativeArray)array.get(i);
System.out.println("Object: " + elementArray);
System.out.println("name: " + elementArray.get("name", elementArray));
System.out.println("point: " + elementArray.get("point", elementArray));
}
}
}
catch (ScriptException e) {
....
}
Which gives me the name properly, but I get an instance of Object class for the Point2D item. Since it was originally a javascript object, how can I parse it to obtain x and y values?

You could do it like this:
NativeObject point;
NativeArray elementArray;
for(int i = 0; i < array.getLength(); i++){
if(array.get(i)!=null){
elementArray = (NativeArray)array.get(i);
System.out.println("name: " + elementArray.get("name", elementArray));
point = (NativeObject) arrayFirstElement.get("point", arrayFirstElement);
//System.out.println("point.x: " + NativeObject.getProperty(point, "x"));
//System.out.println("point.y: " + NativeObject.getProperty(point, "y"));
System.out.println("object point has: ");
for ( Object propertyId : NativeObject.getPropertyIds(point)){
System.out.println("property "+ propertyId + " has value " + NativeObject.getProperty(point, propertyId.toString()));
}
}
}
But take a look at these tutorials: 1 ,2, you might get some fresh ideas :)

Well, thanks to #Pointy I figured out the solution, I injected this code inside the if statement:
se.eval("var x = array[" + i + "]['point'].x; var y = array[" + i + "]['point'].y;", se.getBindings(ScriptContext.ENGINE_SCOPE));