问题描述
嗨，大家好：我正在尝试使用Uber Clone代码，并且正在使用Netbeans。我有两个问题： 1）.-在 countryPickerForm 清单4.12 中（清单编号是该书的清单“创建Uber克隆...”）； Netbeans标记我一个错误，（““找不到符号变量CommonCode”），当然，在CommonCode对象中，我不知道要使用哪个库
´´´
public class CountryPickerForm extends Form{
//@SuppressWarnings("LeakingThisInConstructor")
public CountryPickerForm(Button sourceButton,Resources Flag){
super(BoxLayout.y());
**CommonCode.initBlackTitleForm(this,"Select a Country",val-> search(val));**
Image blankIcon = Image.createImage(100,70,0);
´´´ 2）.-第二个问题：列表（5.22） “在焦点更改时切换“ Whereto？” UI”是正确的位置。。我将其放置在任何方法之外的MapForm类内部，但Neatbeans标记了一个错误：“ 预期。类型“ ”的非法开头 这是代码：
from.addFocusListener(new FocusListener(){
public void focusGained(Component cmp){
fromSelected.setIcon(square);
if(layer.getComponentCount()> 1){
Component c = layer.getComponentAt(1);
c.setY(getdisplayHeight());
layer.animateUnlayout(200,150,() ->{
c.remove();
revalidate();
});
}
}
public void focusLost(){
fromSelected.setIcon(circle);
}
});
to.addFocusListener(new FocusListener(){
public void focusGained(Component cmp){
fromSelected.setIcon(circle):
toSelected.setIcon(square);
showToNavigationBar(layer);
}
public void focusLost(Component cmp){
toSelecte3dsetIcon(circle);
}
});
谢谢你们！！！
解决方法
CommonCode在这本书的其中一项编辑中以某种方式丢失了。它是本书开头列出的可下载zip的一部分，应该在其中。这是该课程的完整清单：
package com.codename1.apps.uberclone.forms;
import com.codename1.apps.uberclone.server.UserService;
import com.codename1.components.MultiButton;
import com.codename1.io.Log;
import com.codename1.ui.Button;
import static com.codename1.ui.CN.*;
import com.codename1.ui.Command;
import com.codename1.ui.Container;
import com.codename1.ui.Display;
import com.codename1.ui.FontImage;
import com.codename1.ui.Form;
import com.codename1.ui.Graphics;
import com.codename1.ui.Image;
import com.codename1.ui.Label;
import com.codename1.ui.TextField;
import com.codename1.ui.Toolbar;
import com.codename1.ui.animations.CommonTransitions;
import com.codename1.ui.animations.Transition;
import com.codename1.ui.events.ActionEvent;
import com.codename1.ui.events.ActionListener;
import com.codename1.ui.layouts.BorderLayout;
import com.codename1.ui.layouts.LayeredLayout;
import com.codename1.ui.plaf.Style;
import com.codename1.util.LazyValue;
import com.codename1.util.SuccessCallback;
import java.io.IOException;
/**
* Common code for construction and initialization of various classes e.g. the side menu logic etc.
*
* @author Shai Almog
*/
public class CommonCode {
private static Image avatar;
public static Image getAvatar(SuccessCallback<Image> avatarChanged) {
if(avatar == null) {
int size = convertToPixels(10);
Image temp = Image.createImage(size,size,0xff000000);
Graphics g = temp.getGraphics();
g.setAntiAliased(true);
g.setColor(0xffffff);
g.fillArc(0,360);
Object mask = temp.createMask();
UserService.fetchAvatar(i -> {
avatar = i.fill(size,size).applyMask(mask);
avatarChanged.onSucess(avatar);
});
if(avatar != null) {
return avatar;
}
Style s = new Style();
s.setFgColor(0xc2c2c2);
s.setBgTransparency(255);
s.setBgColor(0xe9e9e9);
FontImage x = FontImage.createMaterial(FontImage.MATERIAL_PERSON,s,size);
avatar = x.fill(size,size);
if(avatar instanceof FontImage) {
avatar = ((FontImage)avatar).toImage();
}
avatar = avatar.applyMask(mask);
}
return avatar;
}
public static Image setAvatar(String imageFile) {
int size = convertToPixels(10);
Image temp = Image.createImage(size,0xff000000);
Graphics g = temp.getGraphics();
g.setAntiAliased(true);
g.setColor(0xffffff);
g.fillArc(0,360);
Object mask = temp.createMask();
try {
Image img = Image.createImage(imageFile);
avatar = img.fill(size,size).applyMask(mask);
} catch(IOException err) {
// this is unlikely as we just grabbed the image...
Log.e(err);
}
return avatar;
}
public static MultiButton createEntry(char icon,String title) {
MultiButton b = new MultiButton(title);
b.setUIID("Container");
b.setUIIDLine1("WhereToButtonLine1");
b.setIconUIID("WhereToButtonIcon");
FontImage.setMaterialIcon(b,icon);
return b;
}
public static MultiButton createEntry(char icon,String title,String subtitle) {
MultiButton b = new MultiButton(title);
b.setTextLine2(subtitle);
b.setUIID("Container");
b.setUIIDLine1("WhereToButtonLineNoBorder");
b.setUIIDLine2("WhereToButtonLine2");
b.setIconUIID("WhereToButtonIcon");
FontImage.setMaterialIcon(b,icon);
return b;
}
public static Label createSeparator() {
Label sep = new Label("","WhereSeparator");
sep.setShowEvenIfBlank(true);
return sep;
}
public static void constructSideMenu(Toolbar tb) {
Button userAndAvatar = new Button("Shai Almog","AvatarBlock");
userAndAvatar.setIcon(getAvatar(i -> userAndAvatar.setIcon(i)));
userAndAvatar.setGap(convertToPixels(3));
userAndAvatar.addActionListener(e -> new EditAccountForm().show());
tb.addComponentToSideMenu(userAndAvatar);
MultiButton uberForBusiness = new MultiButton("Do you Uber for business?");
uberForBusiness.setTextLine2("Tap to create your business profile");
uberForBusiness.setUIID("UberForBusinessBackground");
uberForBusiness.setUIIDLine1("UberForBusinessLine1");
uberForBusiness.setUIIDLine2("UberForBusinessLine2");
tb.addComponentToSideMenu(uberForBusiness);
tb.addCommandToSideMenu("Payment",null,e -> {});
tb.addCommandToSideMenu("Your Trips",e -> {});
tb.addCommandToSideMenu("Help",e -> {});
tb.addCommandToSideMenu("Free Rides",e -> {});
tb.addCommandToSideMenu("Settings",e -> new SettingsForm().show());
Button legalButton = new Button("Legal","Legal");
Container legal = BorderLayout.centerCenterEastWest(null,new Label("v4.178.1001","VersionNumber"),legalButton);
legal.setLeadComponent(legalButton);
legal.setUIID("SideNavigationPanel");
tb.setComponentToSideMenuSouth(legal);
}
/**
* Initializes a form with a black background title animation style
* @param f the form
*/
public static void initBlackTitleForm(Form f,SuccessCallback<String> searchResults) {
Form backTo = getCurrentForm();
f.getContentPane().setScrollVisible(false);
Button back = new Button("","TitleCommand");
removeTransitionsTemporarily(backTo);
back.addActionListener(e -> backTo.showBack());
back.getAllStyles().setFgColor(0xffffff);
FontImage.setMaterialIcon(back,FontImage.MATERIAL_ARROW_BACK);
f.setBackCommand(new Command("") {
@Override
public void actionPerformed(ActionEvent evt) {
backTo.showBack();
}
});
Container searchBack = null;
if(searchResults != null) {
Button search = new Button("","TitleCommand");
search.getAllStyles().setFgColor(0xffffff);
FontImage.setMaterialIcon(search,FontImage.MATERIAL_SEARCH);
search.addActionListener(e -> {
});
searchBack = BorderLayout.north(
BorderLayout.centerEastWest(null,search,back));
} else {
searchBack = BorderLayout.north(
BorderLayout.centerEastWest(null,back));
}
Label titleLabel = new Label(title,"WhiteOnBlackTitle");
titleLabel.getAllStyles().setMarginTop(back.getPreferredH());
titleLabel.getAllStyles().setMarginUnit(Style.UNIT_TYPE_PIXELS,Style.UNIT_TYPE_DIPS,Style.UNIT_TYPE_DIPS);
f.getToolbar().setTitleComponent(LayeredLayout.encloseIn(searchBack,titleLabel));
f.getAnimationManager().onTitleScrollAnimation(titleLabel.createStyleAnimation("WhiteOnBlackTitleLeftMargin",200));
f.setTransitionInAnimator(CommonTransitions.createCover(CommonTransitions.SLIDE_VERTICAL,false,300));
f.setTransitionOutAnimator(CommonTransitions.createUncover(CommonTransitions.SLIDE_VERTICAL,true,300));
}
public static void removeTransitionsTemporarily(final Form f) {
final Transition originalOut = f.getTransitionOutAnimator();
final Transition originalIn = f.getTransitionInAnimator();
f.setTransitionOutAnimator(CommonTransitions.createEmpty());
f.setTransitionInAnimator(CommonTransitions.createEmpty());
f.addShowListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent evt) {
f.setTransitionOutAnimator(originalOut);
f.setTransitionInAnimator(originalIn);
f.removeShowListener(this);
}
});
}
}
第二个列表显示在MapForm的{{1}}中。此代码稍后将进行一些其他的重构，如下所示：
showNavigationToolbar