黑莓手机 - 自定义工具栏菜单 [英] BlackBerry - Custom menu toolbar
问题描述
喜
我在黑莓手机编程初学者，我需要通过自定义菜单，水平在我的应用程序来替换默认菜单（当您preSS菜单按钮）。来形容最好是我想要的结果相同WeatherEye申请黑莓...
Hi I'm a beginner in BlackBerry programming, I need to replace in my application the default menu (when you press the menu button) by a custom menu, horizontal. The best to describe is I want the same result as the WeatherEye application for BlackBerry...
我知道如何创建默认的菜单，但是这一次我也没办法！
谢谢
I know how to create the default menu, but this one I have no idea! Thank you,
推荐答案
你将需要做的是：
- 创建SizebleVFManager（contentManager）作为VerticalFieldManager的延伸
- 设置显示宽度和高度=（显示高度 - 菜单高）大小contentManager
- 添加contentManager筛选
- 创建HorizontalFieldManager（menuManager）
- 创建BitmapButtonField（菜单按钮）作为ButtonField字段的扩展
- 设置FieldChangeListeners到menuButtons
- 添加到menuButtons menuManager
- 添加menuManager筛选
SizebleVFManager样本：
Sample of SizebleVFManager :
class SizebleVFManager extends VerticalFieldManager
{
int mWidth = 0;
int mHeight = 0;
public SizebleVFM(int width, int height, long style) {
super(style);
mWidth = width;
mHeight = height;
}
public SizebleVFM(int width, int height) {
mWidth = width;
mHeight = height;
}
public int getPreferredWidth() {
return mWidth;
}
public int getPreferredHeight() {
return mHeight;
}
protected void sublayout(int width, int height) {
width = getPreferredWidth();
height = getPreferredHeight();
super.sublayout(width, height);
setExtent(width, height);
}
}
...
SizebleVFManager contentManager =
new SizebleVFManager(Display.getWidth(), Display.getHeight(),
VERTICAL_SCROLL|VERTICAL_SCROLLBAR);
另请参阅结果
<一href=\"http://stackoverflow.com/questions/1445953/blackberry-user-interface-design-customizable-ui/1450719#1450719\">sample BitmapButtonField和工具栏的
PS虽然它能够更好地使用标准菜单...
PS though its better to use standard menu...
更新
如果要禁用默认菜单功能，取消菜单的keydown：
If you want to disable default menu functionality, cancel MENU keydown:
protected boolean keyDown(int keycode, int time) {
if(Keypad.KEY_MENU == Keypad.key(keycode))
{
return true;
}
else
return super.keyDown(keycode, time);
}
更新
我已经安装了精彩的天气应用并了解这个样本可能是更相似的几个改进：
I've installed that wonderful weather application and understood this sample may be more alike with several improvements:
- 使用CyclicHFManager作为HorizontalFieldManager的延伸
- 显示/隐藏menuManager上的菜单按钮，点击
CyclicHFManager是经理，将继续聚焦在同一个地方视觉及以上运行所有领域，在周期。像<一个href=\"http://stackoverflow.com/questions/2550561/blackberry-custom-centered-cyclic-horizontalfieldmanager\">BlackBerry - 自定义为本循环HorizontalFieldManager
CyclicHFManager is a manager which will keep focus on the same place visually and run all fields over, in cycle. Like in BlackBerry - Custom centered cyclic HorizontalFieldManager
class CyclicHFManager extends HorizontalFieldManager {
int mFocusedFieldIndex = 0;
boolean mCyclicTurnedOn = false;
public void focusChangeNotify(int arg0) {
super.focusChangeNotify(arg0);
if (mCyclicTurnedOn) {
int focusedFieldIndexNew = getFieldWithFocusIndex();
if (focusedFieldIndexNew != mFocusedFieldIndex) {
if (focusedFieldIndexNew - mFocusedFieldIndex > 0)
switchField(0, getFieldCount() - 1);
else
switchField(getFieldCount() - 1, 0);
}
}
else
{
mFocusedFieldIndex = getFieldWithFocusIndex();
}
}
private void switchField(int prevIndex, int newIndex) {
Field field = getField(prevIndex);
delete(field);
insert(field, newIndex);
}
}
和全code样品：</ P>
And whole code sample:
abstract class AScreen extends MainScreen {
boolean mMenuEnabled = false;
SizebleVFManager mContentManager = null;
CyclicHFManager mMenuManager = null;
public AScreen() {
mContentManager = new SizebleVFManager(Display.getWidth(), Display
.getHeight(), VERTICAL_SCROLL | VERTICAL_SCROLLBAR);
add(mContentManager);
// mMenuManager = new CyclicHFManager(Display.getWidth(), 60);
mMenuManager = new CyclicHFManager();
mMenuManager.setBorder(BorderFactory.createBevelBorder(new XYEdges(4,
0, 0, 0), new XYEdges(Color.DARKBLUE, 0, 0, 0), new XYEdges(
Color.WHITE, 0, 0, 0)));
mMenuManager.setBackground(BackgroundFactory
.createLinearGradientBackground(Color.DARKBLUE, Color.DARKBLUE,
Color.LIGHTBLUE, Color.LIGHTBLUE));
for (int i = 0; i < 10; i++) {
Bitmap nBitmap = new Bitmap(60, 60);
Graphics g = new Graphics(nBitmap);
g.setColor(Color.DARKBLUE);
g.fillRect(0, 0, 60, 60);
g.setColor(Color.WHITE);
g.drawRect(0, 0, 60, 60);
Font f = g.getFont().derive(Font.BOLD, 40);
g.setFont(f);
String text = String.valueOf(i);
g.drawText(text, (60 - f.getAdvance(text)) >> 1, (60 - f
.getHeight()) >> 1);
Bitmap fBitmap = new Bitmap(60, 60);
g = new Graphics(fBitmap);
g.setColor(Color.DARKBLUE);
g.fillRect(0, 0, 60, 60);
g.setColor(Color.GOLD);
g.drawRect(0, 0, 60, 60);
g.setFont(f);
g.drawText(text, (60 - f.getAdvance(text)) >> 1, (60 - f
.getHeight()) >> 1);
BitmapButtonField button = new BitmapButtonField(nBitmap, fBitmap,
fBitmap);
button.setCookie(String.valueOf(i));
button.setPadding(new XYEdges(0, 18, 0, 18));
button.setChangeListener(new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
Dialog.inform("Button # " + (String) field.getCookie());
}
});
mMenuManager.add(button);
}
}
protected boolean keyDown(int keycode, int time) {
if (Keypad.KEY_MENU == Keypad.key(keycode)) {
if (mMenuManager.getManager() != null) {
delete(mMenuManager);
mMenuManager.mCyclicTurnedOn = false;
mContentManager.updateSize(Display.getWidth(), Display
.getHeight());
} else {
add(mMenuManager);
mMenuManager.getField(2).setFocus();
mMenuManager.mCyclicTurnedOn = true;
mContentManager.updateSize(Display.getWidth(), Display
.getHeight()
- mMenuManager.getHeight());
}
return true;
} else
return super.keyDown(keycode, time);
}
}
class FirstScreen extends AScreen {
public FirstScreen() {
mContentManager.add(new LabelField("This is a first screen"));
}
}
public class ToolbarMenuApp extends UiApplication {
public ToolbarMenuApp() {
pushScreen(new FirstScreen());
}
public static void main(String[] args) {
(new ToolbarMenuApp()).enterEventDispatcher();
}
}
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