在下面的代码中，滚动视图不起作用，每当我在上面的代码中添加一个按钮字段时，它的滚动都是这种形式的标签字段，但是当我删除它时它不起作用所以我的问题是当只有标签字段时如何滚动屏幕形式？
final VerticalFieldManager mainreportfractionsodiumvfm = new VerticalFieldManager(
Manager.USE_ALL_HEIGHT | Manager.VERTICAL_SCROLL);
// For action bar
final HorizontalFieldManager vfm_r = new HorizontalFieldManager(
Field.USE_ALL_WIDTH) {
// Applying background color for that Manager
public void paint(Graphics graphics) {
graphics.setColor(Color.WHITE);
graphics.setBackgroundColor(0Xde3f39);
graphics.clear();
super.paint(graphics);
}
// Placing the Fields
protected void sublayout(int width, int height) {
setPositionChild(getField(0), 0, 0);
layoutChild(getField(0), getField(0).getPreferredWidth(),
getField(0).getPreferredHeight());
setPositionChild(getField(1), Display.getWidth() / 2
- getField(1).getPreferredWidth() / 2, 0);
layoutChild(getField(1), getField(1).getPreferredWidth(),
getField(1).getPreferredHeight());
setPositionChild(getField(2), Display.getWidth()
- getField(2).getPreferredWidth(), 0);
layoutChild(getField(2), getField(2).getPreferredWidth(),
getField(2).getPreferredHeight());
setExtent(width, 35);
}
};
final ButtonField bmpfield1 = new ButtonField("menu");
// To display Home icon
final Bitmap bmp2 = Bitmap.getBitmapResource("home.png");
BitmapField bmpfield2 = new BitmapField(bmp2, Field.FOCUSABLE
| Field.FIELD_RIGHT);
// To display Title
final VerticalFieldManager hfm_mainlbltext = new VerticalFieldManager(
FIELD_HCENTER);
LabelField lbl = new LabelField("Body Surface Area",
Field.FIELD_VCENTER);
LabelField lbl1 = new LabelField("Report", Field.FIELD_VCENTER);
lbl.setFont(lbl.getFont().derive(Font.BOLD));
lbl1.setFont(lbl1.getFont().derive(Font.BOLD));
// setMargin(int top, int right, int bottom, int left)
lbl1.setMargin(0, 0, 0, 50);
hfm_mainlbltext.add(lbl);
hfm_mainlbltext.add(lbl1);
// //////////////////////////////////////////////////////////////////////////////
// fields
// ///////////////////////////////////////////////////////////////////////////////
LabelField lbltxt1 = new LabelField(
"A Fractional Excretion of Sodium (FENa)", FIELD_HCENTER) {
protected void paint(Graphics g) {
g.setColor(0xde3f39);
super.paint(g);
}
};
lbltxt1.setPadding(0, 5, 5, 5);
lbltxt1.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt2 = new LabelField(
"1% suggests pre-renal disease, while > 1% is suggestive of acute tubular necrosis (ATN).",
FIELD_HCENTER) {
protected void paint(Graphics g) {
g.setColor(0x6d6e76);
super.paint(g);
}
};
lbltxt2.setPadding(0, 5, 5, 5);
lbltxt2.setFont(lbl.getFont().derive(Font.BOLD, 15));
VerticalFieldManager hfm8 = new VerticalFieldManager();
HorizontalFieldManager hfmresult = new HorizontalFieldManager();
hfm8.setPadding(10, 5, 5, 5);
final LabelField lblresulttext1 = new LabelField("Result :") {
protected void paint(Graphics g) {
g.setColor(0x6d6e76);
super.paint(g);
}
};
final LabelField lblresulttext2 = new LabelField(
"Fraction Excreation of Sodium") {
protected void paint(Graphics g) {
g.setColor(0x6d6e76);
super.paint(g);
}
};
final LabelField lblresulttext3 = new LabelField("for this patient is") {
protected void paint(Graphics g) {
g.setColor(0x6d6e76);
super.paint(g);
}
};
final LabelField lblresultcal = new LabelField("") {
protected void paint(Graphics g) {
g.setColor(0x0AFF0A);
super.paint(g);
}
};
hfmresult.add(lblresulttext1);
hfmresult.add(lblresulttext2);
hfmresult.add(lblresulttext3);
// setMargin(top,right,bottom,left)
lblresulttext2.setMargin(5, 0, 0, 0);
lblresulttext1.setFont(lbl.getFont().derive(Font.BOLD, 27));
lblresulttext2.setFont(lbl.getFont().derive(Font.BOLD));
lblresultcal.setFont(lbl.getFont().derive(Font.BOLD, 26));
hfm8.add(hfmresult);
hfm8.add(lblresultcal);
// to store the Bitmap
final HorizontalFieldManager hfmforbitmap = new HorizontalFieldManager(
FIELD_HCENTER);
Bitmap objimage = Bitmap.getBitmapResource("bar.png");
// to display the Bitmap
hfmforbitmap.add(new BitmapField(objimage));
LabelField lbltxt3 = new LabelField(
"Fractional Exceretion of Sodium formula ", FIELD_HCENTER) {
protected void paint(Graphics g) {
g.setColor(0Xde3f39);
super.paint(g);
}
};
lbltxt3.setPadding(0, 5, 5, 5);
lbltxt3.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt4 = new LabelField(
"UNa X Pcreat / Ucreat X PNa * 100%", FIELD_HCENTER) {
protected void paint(Graphics g) {
g.setColor(0x6d6e76);
super.paint(g);
}
};
lbltxt4.setPadding(0, 5, 5, 5);
lbltxt4.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt5 = new LabelField("Where") {
protected void paint(Graphics g) {
g.setColor(0x000000);
super.paint(g);
}
};
lbltxt5.setPadding(0, 5, 5, 5);
lbltxt5.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt6 = new LabelField("UNa = Urine sodium") {
protected void paint(Graphics g) {
g.setColor(0x000000);
super.paint(g);
}
};
lbltxt6.setPadding(0, 5, 5, 5);
lbltxt6.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt7 = new LabelField("Pcreat = Plasma creatinine") {
protected void paint(Graphics g) {
g.setColor(0x000000);
super.paint(g);
}
};
lbltxt7.setPadding(0, 5, 5, 5);
lbltxt7.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt8 = new LabelField("Ucreat = Urine creatinine") {
protected void paint(Graphics g) {
g.setColor(0x000000);
super.paint(g);
}
};
lbltxt8.setPadding(0, 5, 5, 5);
lbltxt8.setFont(lbl.getFont().derive(Font.BOLD, 15));
LabelField lbltxt9 = new LabelField("PNa = Plasma sodium") {
protected void paint(Graphics g) {
g.setColor(0x000000);
super.paint(g);
}
};
lbltxt9.setPadding(0, 5, 5, 5);
lbltxt9.setFont(lbl.getFont().derive(Font.BOLD, 15));
ButtonField btn = new ButtonField("btn");
// ///////////////////////////////////////////////////// addding all //
// fields here
final HorizontalFieldManager hfm_main = new HorizontalFieldManager(
Manager.VERTICAL_SCROLL);
final VerticalFieldManager vfm_l = new VerticalFieldManager() {
protected void sublayout(int maxWidth, int maxHeight) {
super.sublayout(280, maxHeight);
setExtent(280, maxHeight);
}
protected void paint(Graphics g) {
g.setBackgroundColor(Color.RED);
// Clears the entire graphic area to the current background
g.clear();
super.paint(g);
}
};
vfm_l.add(new LabelField("sliding pannel"));
vfm_r.add(bmpfield1);
vfm_r.add(hfm_mainlbltext);
vfm_r.add(bmpfield2);
// all layouts are added here in vertical scroll field
mainreportfractionsodiumvfm.add(vfm_r);
mainreportfractionsodiumvfm.add(lbltxt1);
mainreportfractionsodiumvfm.add(lbltxt2);
mainreportfractionsodiumvfm.add(hfm8);
mainreportfractionsodiumvfm.add(hfmforbitmap);
mainreportfractionsodiumvfm.add(lbltxt3);
mainreportfractionsodiumvfm.add(lbltxt4);
mainreportfractionsodiumvfm.add(lbltxt5);
mainreportfractionsodiumvfm.add(lbltxt6);
mainreportfractionsodiumvfm.add(lbltxt7);
mainreportfractionsodiumvfm.add(lbltxt8);
mainreportfractionsodiumvfm.add(lbltxt9);
// mainreportfractionsodiumvfm.add(btn);
hfm_main.add(mainreportfractionsodiumvfm);
add(hfm_main);