我正在製作一個應用程序,其中每個選項卡上有幾個選項卡,單擊一個URL被調用並且在線xml被解析。顯示此xml的數據。問題是,當數據顯示時,選項卡消失,只有當我按下模擬器的後退按鈕時纔會出現。而數據應該出現在標籤下方。在黑莓主屏幕中打開一個新的主屏幕
請幫
我UI
public class TabControl extends UiApplication {
public TabControl() {
TabControlScreen screen = new TabControlScreen();
pushScreen(screen);
}
public static void main(String[] args) {
TabControl app = new TabControl();
app.enterEventDispatcher();
}
private class TabControlScreen extends MainScreen implements FocusChangeListener {
private Bitmap backgroundBitmap = Bitmap.getBitmapResource("rednavnar.png");
private LabelField tab1;
private LabelField tab2;
private LabelField tab3;
private VerticalFieldManager tabArea;
private VerticalFieldManager tab1Manager;
private VerticalFieldManager tab2Manager;
private VerticalFieldManager tab3Manager;
public TabControlScreen() {
LabelField appTitle = new LabelField("Energy", LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH | LabelField.FIELD_HCENTER);
this.setTitle(appTitle);
HorizontalFieldManager hManager = new HorizontalFieldManager(Manager.HORIZONTAL_SCROLL | Manager.HORIZONTAL_SCROLLBAR | Manager.USE_ALL_WIDTH | Manager.TOPMOST) {
// Override the paint method to draw the background image.
public void paint(Graphics graphics) {
// Draw the background image and then call paint.
graphics.drawBitmap(0, 0, 700, 100, backgroundBitmap, 0, 0);
super.paint(graphics);
}
};
tab1 = new LabelField("Top News", LabelField.FOCUSABLE | LabelField.HIGHLIGHT_FOCUS){
protected boolean navigationClick(int status,int time){
tabArea = displayTab1();
return true;
}
};
LabelField separator = new LabelField("|", LabelField.NON_FOCUSABLE);
tab2 = new LabelField("Power", LabelField.FOCUSABLE | LabelField.HIGHLIGHT_FOCUS){
protected boolean navigationClick(int status,int time){
tabArea = displayTab2();
return true;
}
};
LabelField separator1 = new LabelField("|", LabelField.NON_FOCUSABLE);
tab3 = new LabelField("Renewable Energy", LabelField.FOCUSABLE | LabelField.HIGHLIGHT_FOCUS){
protected boolean navigationClick(int status,int time){
tabArea = displayTab3();
return true;
}
};
tab1.setFocusListener(this);
tab2.setFocusListener(this);
tab3.setFocusListener(this);
hManager.add(tab1);
hManager.add(separator);
hManager.add(tab2);
hManager.add(separator1);
hManager.add(tab3);
add(hManager);
add(new SeparatorField());
tab1Manager = new VerticalFieldManager();
tab2Manager = new VerticalFieldManager();
tab3Manager = new VerticalFieldManager();
tabArea = displayTab1();
add(tabArea);
}
public void focusChanged(Field field, int eventType) {
if (tabArea != null) {
if (eventType == FOCUS_GAINED) {
if (field == tab1) {
delete(tabArea);
tabArea = displayTab1();
add(tabArea);
} else if (field == tab2) {
delete(tabArea);
tabArea = displayTab2();
add(tabArea);
} else if (field == tab3) {
delete(tabArea);
tabArea = displayTab3();
add(tabArea);
}
}
}
}
public VerticalFieldManager displayTab1() {
UiApplication.getUiApplication().pushScreen(new News());
return tab1Manager;
}
public VerticalFieldManager displayTab2() {
UiApplication.getUiApplication().pushScreen(new Power());
return tab2Manager;
}
public VerticalFieldManager displayTab3() {
UiApplication.getUiApplication().pushScreen(new Energy());
return tab3Manager;
}
}
}
我新聞主屏
public class News extends MainScreen {
public News() {
String xmlUrl = "http://182.71.5.53:9090/solr/core4/select/?q=*";
String[][] urlData = XmlFunctions.getURLFromXml(xmlUrl);
for (int i = 0; i < urlData.length; i++) {
final String title = urlData[0][i];
final String id = urlData[1][i];
//add(new LinkLabel(title, i));
add(new RichTextField(title){
protected boolean navigationClick(int status,int time){
String cId = id;
String bodyUrl = "http://192.168.1.44:9090/solr/core0/select/?q="+cId+";
String[][] bodyData = XmlFunctions.getBodyFromXml(bodyUrl);
for(int j=0;j<bodyData.length;j++){
String body = bodyData[0][j];
add(new RichTextField(body));
}
return true;
}
});
add(new SeparatorField());
}
}
}
現在我想打開的選項卡下面這個消息屏幕 請幫助
Ashraf:謝謝你。我在同一個應用程序中有另一個問題,當我移動標籤時,標籤僅在焦點上發生變化,而我只想在點擊時更改標籤。如果您想要像上次評論中所述的場景,可以幫助 – ReNa
,只需評論「focusChanged」方法及其實施。 –
Ashraf:對不起,我一遍又一遍地誤會了你,我刪除了你所告訴的「** focusChanged **」方法,但是現在只有第一個標籤的數據在所有標籤中顯示,不管我是否點擊其他標籤。任何解決此問題的方法都將有所幫助 – ReNa