Java Blackberry自定义列表字段未以正确方式重新绘制
每次我使用自定义列表字段推送新屏幕时,行的大小都不是必须的大小。我尝试使用invalidate,但它没有任何作用 我不明白为什么,当我使用焦点导航时,或者当屏幕处于非活动状态并返回时,列表以正确的方式显示Java Blackberry自定义列表字段未以正确方式重新绘制,java,blackberry,listfield,blackberry-5,Java,Blackberry,Listfield,Blackberry 5,每次我使用自定义列表字段推送新屏幕时,行的大小都不是必须的大小。我尝试使用invalidate,但它没有任何作用 我不明白为什么,当我使用焦点导航时,或者当屏幕处于非活动状态并返回时,列表以正确的方式显示 public class AboutListField extends ListField implements ListFieldCallback { private Vector rows; EncodedImage _rateIcon = EncodedImage
public class AboutListField extends ListField implements ListFieldCallback {
private Vector rows;
EncodedImage _rateIcon = EncodedImage
.getEncodedImageResource("icon_rate.png");
EncodedImage _privacyIcon = EncodedImage
.getEncodedImageResource("icon_info.png");
EncodedImage _legalIcon = EncodedImage
.getEncodedImageResource("icon_ad.png");
EncodedImage _facebookIcon = EncodedImage
.getEncodedImageResource("icon_facebook.png");
EncodedImage _twitterIcon = EncodedImage
.getEncodedImageResource("icon_twitter.png");
private LabelField nameLabel;
public AboutListField() {
super(0, ListField.USE_ALL_WIDTH);
setRowHeight(60);
setCallback(this);
Font fontName = Font.getDefault().derive(Font.SERIF_STYLE, 8,
Ui.UNITS_pt);
rows = new Vector();
for (int i = 0; i < 5; i++) {
HorizontalManager row = new HorizontalManager();
switch (i) {
case 0:
row.add(new BitmapField(_rateIcon.getBitmap()));
nameLabel = new CustomLabelField("Valorar app", NON_FOCUSABLE,
Color.WHITE);
nameLabel.setFont(fontName);
row.add(nameLabel);
break;
case 1:
row.add(new BitmapField(_privacyIcon.getBitmap()));
nameLabel = new CustomLabelField("Política de privacidad",
NON_FOCUSABLE, Color.WHITE);
nameLabel.setFont(fontName);
row.add(nameLabel);
break;
case 2:
row.add(new BitmapField(_legalIcon.getBitmap()));
nameLabel = new CustomLabelField("Aviso Legal", NON_FOCUSABLE,
Color.WHITE);
nameLabel.setFont(fontName);
row.add(nameLabel);
break;
case 3:
row.add(new BitmapField(_facebookIcon.getBitmap()));
nameLabel = new CustomLabelField("Síguenos en Facebook",
NON_FOCUSABLE, Color.WHITE);
nameLabel.setFont(fontName);
row.add(nameLabel);
break;
case 4:
row.add(new BitmapField(_twitterIcon.getBitmap()));
nameLabel = new CustomLabelField("Síguenos en Twitter",
NON_FOCUSABLE, Color.WHITE);
nameLabel.setFont(fontName);
row.add(nameLabel);
break;
default:
break;
}
rows.addElement(row);
}
setSize(rows.size());
}
protected void drawFocus(Graphics graphics, boolean on) {
XYRect focusRect = new XYRect();
getFocusRect(focusRect);
boolean oldDrawStyleFocus = graphics
.isDrawingStyleSet(Graphics.DRAWSTYLE_FOCUS);
try {
if (on) {
// set the style so the fields in the row will update its color
// accordingly
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, true);
int oldColour = graphics.getColor();
try {
graphics.setColor(Constants.Colors.ORANGE_SELECTED);
graphics.fillRect(focusRect.x, focusRect.y,
focusRect.width, focusRect.height);
} finally {
graphics.setColor(oldColour);
}
// to draw the row again
drawListRow(this, graphics, getSelectedIndex(), focusRect.y,
focusRect.width);
}
} finally {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS,
oldDrawStyleFocus);
}
}
public void drawListRow(ListField listField, Graphics graphics, int index,
int y, int width) {
AboutListField aboutList = (AboutListField) listField;
HorizontalManager rowManager = (HorizontalManager) aboutList.rows
.elementAt(index);
rowManager.drawRow(graphics, 0, y, width, getRowHeight());
}
public Object get(ListField listField, int index) {
// TODO Auto-generated method stub
return null;
}
public int getPreferredWidth(ListField listField) {
// TODO Auto-generated method stub
return 0;
}
public int indexOfList(ListField listField, String prefix, int start) {
// TODO Auto-generated method stub
return 0;
}
public boolean navigationClick(int status, int time) {
switch (this.getSelectedIndex()) {
case 0:
//Valorar App
this.setSelectedIndex(0);
break;
case 1:
// Política de privacidad
InfosScreen policyScreen = new InfosScreen(InfosScreen.TYPE_PRIVACY);
UiApplication.getUiApplication().pushScreen(policyScreen);
this.setSelectedIndex(1);
break;
case 2:
// Aviso Legal
InfosScreen legalScreen = new InfosScreen(InfosScreen.TYPE_LEGAL);
UiApplication.getUiApplication().pushScreen(legalScreen);
this.setSelectedIndex(2);
break;
case 3:
// Facebook
this.setSelectedIndex(3);
break;
case 4:
// Twitter
this.setSelectedIndex(4);
break;
default:
break;
}
return super.navigationClick(status, time);
}
public class HorizontalManager extends Manager {
public HorizontalManager() {
super(0);
}
public void drawRow(Graphics g, int x, int y, int width, int height) {
// Arrange the cell fields within this row manager.
layout(width, height);
// Place this row manager within its enclosing list.
setPosition(x, y);
// Apply a translating/clipping transformation to the graphics
// context so that this row paints in the right area.
g.pushRegion(getExtent());
// Paint this manager's controlled fields.
subpaint(g);
g.setColor(0x00CACACA);
g.drawLine(0, 0, getPreferredWidth(), 0);
// Restore the graphics context.
g.popContext();
}
protected void sublayout(int width, int height) {
// set the size and position of each field.
int fontHeight = Font.getDefault().getHeight();
int preferredWidth = getPreferredWidth();
// start with the Bitmap Field of the Radio icon
Field field = getField(0);
layoutChild(field, _rateIcon.getWidth(), getRowHeight());
setPositionChild(field, 20,
(getHeight() / 2 - _rateIcon.getHeight() / 2));
// set the radio name label field
field = getField(1);
layoutChild(field, preferredWidth - 16, getRowHeight());
setPositionChild(field, _rateIcon.getWidth() + 40,
(getHeight() / 2 - fontHeight / 2));
setExtent(preferredWidth, getPreferredHeight());
}
// The preferred width of a row is defined by the list renderer.
public int getPreferredWidth() {
return Display.getWidth();
}
// The preferred height of a row is the "row height" as defined in the
// enclosing list.
public int getPreferredHeight() {
return getRowHeight();
}
}
}
public类AboutListField扩展ListField实现ListFieldCallback{
专用向量行;
EncodedImage\u rateIcon=EncodedImage
.getEncodeDimagerSource(“icon_rate.png”);
EncodedImage _privacyIcon=EncodedImage
.getEncodeDimagerSource(“icon_info.png”);
EncodedImage _-Legacon=EncodedImage
.getEncodeDimagesource(“icon_ad.png”);
EncodedImage\u facebook图标=EncodedImage
.getEncodeDimagerSource(“icon_facebook.png”);
EncodedImage _twitterIcon=EncodedImage
.getEncodeDimagerSource(“icon_twitter.png”);
私人LabelField名称标签;
公共AboutListField(){
超级(0,列表字段。使用所有宽度);
设置行高(60);
setCallback(这个);
Font fontName=Font.getDefault().derive(Font.SERIF_样式,8,
单位(单位);;
行=新向量();
对于(int i=0;i<5;i++){
HorizontalManager行=新建HorizontalManager();
开关(一){
案例0:
添加(新位图字段(_ratecon.getBitmap());
nameLabel=新的CustomLabelField(“Valorar应用程序”,非聚焦,
颜色(白色);
nameLabel.setFont(fontName);
行。添加(名称标签);
打破
案例1:
添加(新的位图字段(_privacyIcon.getBitmap());
nameLabel=新的CustomLabelField(“Política de privacidad”,
非聚焦,彩色。白色);
nameLabel.setFont(fontName);
行。添加(名称标签);
打破
案例2:
添加(新的位图字段(_-ollicon.getBitmap());
nameLabel=新的CustomLabelField(“Aviso Legal”),不可聚焦,
颜色(白色);
nameLabel.setFont(fontName);
行。添加(名称标签);
打破
案例3:
添加(新位图字段(_facebookIcon.getBitmap());
nameLabel=new CustomLabelField(“Síguenos en Facebook”,
非聚焦,彩色。白色);
nameLabel.setFont(fontName);
行。添加(名称标签);
打破
案例4:
添加(新位图字段(_twitterIcon.getBitmap());
nameLabel=new CustomLabelField(“Síguenos en Twitter”,
非聚焦,彩色。白色);
nameLabel.setFont(fontName);
行。添加(名称标签);
打破
违约:
打破
}
行。添加元素(行);
}
设置大小(rows.size());
}
受保护的void drawFocus(图形,布尔打开){
XYRect focusRect=新的XYRect();
getFocusRect(focusRect);
布尔值oldDrawStyleFocus=图形
.isDrawingStyleSet(图形.DRAWSTYLE_焦点);
试一试{
如果(打开){
//设置样式,以便行中的字段将更新其颜色
//相应地
graphics.setDrawingStyle(graphics.DRAWSTYLE_FOCUS,true);
int oldColour=graphics.getColor();
试一试{
graphics.setColor(常数.颜色.选择橙色);
graphics.fillRect(focusRect.x,focusRect.y,
focusRect.宽度、focusRect.高度);
}最后{
图形.设置颜色(旧颜色);
}
//再次划清界限
drawListRow(这个,graphics,getSelectedIndex(),focusRect.y,
焦直宽度);
}
}最后{
graphics.setDrawingStyle(graphics.DRAWSTYLE\u焦点,
奥尔德(焦点);
}
}
public void drawListRow(ListField ListField、图形、整数索引、,
整数y,整数宽度){
AboutListField aboutList=(AboutListField)列表字段;
HorizontalManager行管理器=(HorizontalManager)aboutList.rows
.elementAt(索引);
drawRow(图形,0,y,宽度,getRowHeight());
}
公共对象get(ListField ListField,int index){
//TODO自动生成的方法存根
返回null;
}
public int getPreferredWidth(ListField ListField){
//TODO自动生成的方法存根
返回0;
}
public int indexOfList(ListField ListField,字符串前缀,int start){
//TODO自动生成的方法存根
返回0;
}
公共布尔导航单击(int状态,int时间){
开关(this.getSelectedIndex()){
案例0:
//Valorar应用程序
此.setSelectedIndex(0);
打破
案例1:
//私有政策
InfosScreen policyScreen=新的InfosScreen(InfosScreen.TYPE_PRIVACY);
UiApplication.getUiApplication().pushScreen(策略屏幕);
此。设置选定的索引(1);
打破
案例2:
//阿维索法律公司
InfosScreen legalsScreen=新的InfosScreen(InfosScreen.TYPE_LEGAL);
UiApplication.getUiApplication().pushScreen(legalScreen);
本.设置选择的索引(2);
打破
案例3:
//脸谱网
本.设置选择的索引(3);
打破
案例4:
//推特
本.设置选择的索引(4);
打破
违约:
打破
}
返回super.navigationClick(状态、时间