Java 设备上未加载BlackBerry RSS源
我已经开发了RSS提要阅读器应用程序,当我在BB Simulator 9900上执行该应用程序时,我能够成功地显示列表项 但是当我尝试在我的真实设备BB Curve 9380上执行相同的应用程序时,我无法加载我的列表项 谁能告诉我出了什么问题 注意:当我在真实设备上运行应用程序时,屏幕上会显示*feed Not Available*消息 这是我的代码:Java 设备上未加载BlackBerry RSS源,java,blackberry,java-me,Java,Blackberry,Java Me,我已经开发了RSS提要阅读器应用程序,当我在BB Simulator 9900上执行该应用程序时,我能够成功地显示列表项 但是当我尝试在我的真实设备BB Curve 9380上执行相同的应用程序时,我无法加载我的列表项 谁能告诉我出了什么问题 注意:当我在真实设备上运行应用程序时,屏幕上会显示*feed Not Available*消息 这是我的代码: public class RssScreen extends MainScreen implements ListFieldCallback {
public class RssScreen extends MainScreen implements ListFieldCallback {
public RssScreen() {
subManager = new VerticalFieldManager(Manager.VERTICAL_SCROLL
| Manager.VERTICAL_SCROLLBAR) {
protected void sublayout(int maxWidth, int maxHeight) {
int displayWidth=Display.getWidth();
int displayHeight = Display.getHeight();
super.sublayout(displayWidth, displayHeight);
setExtent(displayWidth, displayHeight);
}
};
_list = new ListField()
{
protected boolean navigationClick(int status, int time) {
return true;
}
public void paint(Graphics graphics)
{
graphics.setColor((int) mycolor);
super.paint(graphics);
}
};
mycolor = 0x00FFFFFF;
_list.invalidate();
_list.setEmptyString("* Feeds Not Available *", DrawStyle.HCENTER);
_list.setRowHeight(70);
_list.setCallback(this);
//mainManager.add(subManager);
add(subManager);
listElements.removeAllElements();
_connectionthread = new Connection();
_connectionthread.start();
}
/*RssFileReading in a Seperate Thread*/
private class Connection extends Thread {
public Connection() {
super();
}
public void run() {
Document doc;
StreamConnection conn = null;
InputStream is = null;
try {
conn = (StreamConnection) Connector .open("http://toucheradio.com/toneradio/android/toriLite/toriplaylist.xml"
+ ";deviceside=true");
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory
.newInstance();
docBuilderFactory.setIgnoringElementContentWhitespace(true);
docBuilderFactory.setCoalescing(true);
DocumentBuilder docBuilder = docBuilderFactory
.newDocumentBuilder();
docBuilder.isValidating();
is = conn.openInputStream();
doc = docBuilder.parse(is);
doc.getDocumentElement().normalize();
NodeList listImg = doc.getElementsByTagName("title");
for (int i = 0; i < listImg.getLength(); i++) {
Node textNode = listImg.item(i).getFirstChild();
listElements.addElement(textNode.getNodeValue());
}
NodeList list = doc.getElementsByTagName("image");
for (int a = 0; a < list.getLength(); a++) {
Node textNode1 = list.item(a).getFirstChild();
String imageurl = textNode1.getNodeValue();
Bitmap image = GetImage.connectServerForImage(imageurl
.trim() + ";deviceside=true");
listImage.addElement(image);
}
} catch (Exception e) {
System.out.println(e.toString());
} finally {
if (is != null) {
try {
is.close();
} catch (IOException ignored) {
}
}
if (conn != null) {
try {
conn.close();
} catch (IOException ignored) {
}
}
}
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
_list.setSize(listElements.size());
subManager.add(_list);
invalidate();
}
});
} }
/*This Method is Invoked for Each title on RssFile*/
public void drawListRow(ListField list, Graphics g, int index, int y,
int width) {
String title = (String) listElements.elementAt(index);
Bitmap image = (Bitmap) listImage.elementAt(index);
try {
g.drawBitmap(xpos, ypos, w, h, image, 0, 0);
xpos = w + 20;
g.drawText(title, xpos, ypos);
} catch (Exception e) {
e.printStackTrace();
}
}
}
公共类RssScreen扩展MainScreen实现ListFieldCallback{
公共RssScreen(){
subManager=新建垂直字段管理器(Manager.VERTICAL\u滚动
|管理器。垂直(滚动条){
受保护的空位子布局(int-maxWidth、int-maxHeight){
int displayWidth=Display.getWidth();
int displayHeight=Display.getHeight();
超级子布局(显示宽度、显示高度);
setExtent(显示宽度、显示高度);
}
};
_列表=新列表字段()
{
受保护的布尔导航单击(int状态,int时间){
返回true;
}
公共空间绘制(图形)
{
graphics.setColor((int)mycolor);
超级油漆(图形);
}
};
mycolor=0x00FFFFFF;
_list.invalidate();
_list.setEmptyString(“*提要不可用*”,DrawStyle.HCENTER);
_列表。设置行高(70);
_list.setCallback(this);
//mainManager.add(子管理器);
添加(子管理器);
listElements.removeAllElements();
_connectionthread=新连接();
_connectionthread.start();
}
/*RssFileReading在一个单独的线程中*/
私有类连接扩展线程{
公共连接(){
超级();
}
公开募捐{
文件文件;
StreamConnection conn=null;
InputStream=null;
试一试{
连接=(流连接)连接器。打开(“http://toucheradio.com/toneradio/android/toriLite/toriplaylist.xml"
+“deviceside=true”);
DocumentBuilderFactory docBuilderFactory=DocumentBuilderFactory
.newInstance();
setIgnoringElementContentWhitespace(true);
docBuilderFactory.setCoalescing(true);
DocumentBuilder docBuilder=docBuilderFactory
.newDocumentBuilder();
isValidating();
is=conn.openInputStream();
doc=docBuilder.parse(is);
doc.getDocumentElement().normalize();
节点列表img=doc.getElementsByTagName(“标题”);
对于(int i=0;i
从上面的注释中,很明显问题出在连接字符串上。在url的末尾追加http连接字符串,然后重试
conn = (StreamConnection) Connector .open("http://toucheradio.com/toneradio/android/toriLite/toriplaylist.xml"
+getConnectionString() );
下面给出了getConnectionString()
-
private static String getConnectionString()
{
String connectionString = null;
// Wifi is the preferred transmission method
f(WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)
{
connectionString = ";interface=wifi";
}
// Is the carrier network the only way to connect?
else if((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT)
{
String carrierUid = getCarrierBIBSUid();
if(carrierUid == null)
{
// Has carrier coverage, but not BIBS. So use the carrier's TCP network
connectionString = ";deviceside=true";
}
else
{
// otherwise, use the Uid to construct a valid carrier BIBS request
connectionString = ";deviceside=false;connectionUID="+carrierUid + ";ConnectionType=mds-public";
}
}
// Check for an BIS connection
else if (TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_BIS_B) && TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_BIS_B)) {
connectionString = ";deviceside=false;ConnectionType=mds-public";
}
// Check for an MDS connection instead (BlackBerry Enterprise Server)
else if((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS)
{
connectionString = ";deviceside=false";
}
// If there is no connection available abort to avoid bugging the user unnecssarily.
else if(CoverageInfo.getCoverageStatus() == CoverageInfo.COVERAGE_NONE)
{
//no connection available
}
// In theory, all bases are covered so this shouldn't be reachable.
else
{
connectionString = ";deviceside=true";
}
return connectionString;
}
/**
* Looks through the phone's service book for a carrier provided BIBS network
* @return The uid used to connect to that network.
*/
private static String getCarrierBIBSUid()
{
ServiceRecord[] records = ServiceBook.getSB().getRecords();
int currentRecord;
for(currentRecord = 0; currentRecord < records.length; currentRecord++)
{
if(records[currentRecord].getCid().toLowerCase().equals("ippp"))
{
if(records[currentRecord].getName().toLowerCase().indexOf("bibs") >= 0)
{
return records[currentRecord].getUid();
}
}
}
return null;
}
private静态字符串getConnectionString()
{
字符串连接字符串=null;
//Wifi是首选的传输方式
f(WLANInfo.getWLANState()==WLANInfo.WLAN\u状态\u已连接)
{
connectionString=“;接口=wifi”;
}
//运营商网络是唯一的连接方式吗?
else if((CoverageInfo.getcoveragentatus()&CoverageInfo.COVERAGE\u DIRECT)==CoverageInfo.COVERAGE\u DIRECT)
{
字符串carrierUid=getCarrierBIBSUid();
if(carrierUid==null)
{
//有运营商的覆盖范围,但没有BIB。所以使用运营商的TCP网络
connectionString=“;deviceside=true”;
}
其他的
{
//否则,使用Uid构造有效的承运人BIBS请求
connectionString=“;deviceside=false;connectionUID=“+carrierUid+”;ConnectionType=mds public”;
}
}
//检查BIS连接
else if(TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT\u BIS\u B)和&TransportInfo.HasufficientCoverage(TransportInfo.TRANSPORT\u BIS\u B)){
connectionString=“;deviceside=false;ConnectionType=mds public”;
}
//改为检查MDS连接(BlackBerry Enterprise Server)
else if((CoverageInfo.getcoveragentatus()&CoverageInfo.COVERAGE\u MDS)==CoverageInfo.COVERAGE\u MDS)
{
connectionString=“;deviceside=false”;
}
//如果没有可用的连接,请中止以避免不必要地窃听用户。
else if(CoverageInfo.getcoveragentatus()==CoverageInfo.COVERAGE\u NONE)
{
//没有可用的连接
}
//理论上,所有的基础都被覆盖了,所以这是不可能实现的。
其他的
{
connectionString=“;deviceside=true”;
}
返回连接字符串;
}
/**
*查看手机的服务手册,查找运营商提供的BIBS网络
*@返回用于连接到该网络的uid。
*/
私有静态字符串getCarrierBIB