子字段上水平经理重点黑莓变色 [英] Blackberry change color of child fields on horizontal manager focus
本文介绍了子字段上水平经理重点黑莓变色的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有水平管理器的阵列，其包括EditField中，下拉菜单，标签和按钮。我把所有这些阵列horizontalfield经理在一个垂直管理员做出象表状结构网格。我可以做，但我想这样做，如果我们专注于水平经理，然后在横向管理的所有组件应该给出一个相同的颜色，我不知道如何使这一点。
I have an array of horizontal manager which consist of editfield, dropdown, label and a button. I place all these array of horizontalfield manager in one vertical manager to make a table like grid like structure. I can make it but I want to do that if we get focus on horizontal manager then all components in the horizontal manager should give a same color I don't know how to make this.
推荐答案
如果您在4.5和更低，延长HorizontalFieldManager，添加颜色属性，使用它的绘制事件和无效的焦点变化：
If you in 4.5 and lower, extend HorizontalFieldManager, add color property, use it on paint event and invalidate on focus change:
class Scr extends MainScreen {
HorizontalFieldManager mMainPanel;
VerticalFieldManager mVerticalPanel;
public Scr() {
mMainPanel = new HorizontalFieldManager();
add(mMainPanel);
mVerticalPanel = new VerticalFieldManager(USE_ALL_HEIGHT
| USE_ALL_WIDTH);
mMainPanel.add(mVerticalPanel);
for (int i = 0; i < 5; i++) {
HFMHighlight hfm = new HFMHighlight();
hfm.setHightlightColor(Color.GRAY);
hfm.add(new LabelField("Label " + i, FIELD_LEFT));
hfm.add(new BasicEditField(FIELD_RIGHT));
mVerticalPanel.add(hfm);
}
}
}
class HFMHighlight extends HorizontalFieldManager {
int mHColor = -1;
public void setHightlightColor(int color) {
mHColor = color;
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (-1 != mHColor && isFocus()) {
graphics.setBackgroundColor(mHColor);
graphics.clear();
}
super.paint(graphics);
}
}
如果您在4.6及更高版本，使用的setBackground为可视状态FOCUS：
If you in 4.6 and higher, use setBackground for VISUAL STATE FOCUS:
class Scr extends MainScreen {
HorizontalFieldManager mMainPanel;
VerticalFieldManager mVerticalPanel;
public Scr() {
RadioInfo.isDataServiceOperational();
CoverageInfo.isOutOfCoverage();
WLANInfo.getWLANState();
mMainPanel = new HorizontalFieldManager();
add(mMainPanel);
mVerticalPanel = new VerticalFieldManager(USE_ALL_HEIGHT
| USE_ALL_WIDTH);
mMainPanel.add(mVerticalPanel);
for (int i = 0; i < 5; i++) {
HFMHighlight hfm = new HFMHighlight(Color.GRAY);
hfm.add(new LabelField("Label " + i, FIELD_LEFT));
hfm.add(new BasicEditField(FIELD_RIGHT));
mVerticalPanel.add(hfm);
}
}
}
class HFMHighlight extends HorizontalFieldManager {
public HFMHighlight(int color) {
Background focusedBG = BackgroundFactory.createSolidBackground(color);
setBackground(VISUAL_STATE_FOCUS, focusedBG);
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
}
这是，如果你想突出显示所有控件（按钮，复选框，选择和编辑）的情况，如果水平经理的重点是：
And here is a case if you want to highlight all controls (button, checkbox, choice and edit) if horizontal manager is focused:
class Scr extends MainScreen {
HorizontalFieldManager mMainPanel;
VerticalFieldManager mVerticalPanel;
public Scr() {
mMainPanel = new HorizontalFieldManager();
add(mMainPanel);
mVerticalPanel = new VerticalFieldManager(USE_ALL_HEIGHT
| USE_ALL_WIDTH);
mMainPanel.add(mVerticalPanel);
for (int i = 0; i < 5; i++) {
HHorizontalFieldManager hfm = new HHorizontalFieldManager();
mVerticalPanel.add(hfm);
HButtonField button = new HButtonField("btn");
button.setHightlightColor(Color.GRAY);
hfm.add(button);
HCheckboxField checkbox = new HCheckboxField("chk box", false);
checkbox.setHightlightColor(Color.GRAY);
hfm.add(checkbox);
String choiceItems[] = { "one", "two", "three" };
HObjectChoiceField dropdown = new HObjectChoiceField("choice",
choiceItems);
dropdown.setHightlightColor(Color.GRAY);
hfm.add(dropdown);
HEditField edit = new HEditField("edit", "___");
edit.setHightlightColor(Color.GRAY);
hfm.add(edit);
}
}
}
class HHorizontalFieldManager extends HorizontalFieldManager {
public HHorizontalFieldManager() {
super();
}
public HHorizontalFieldManager(long style) {
super(style);
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (isFocus()) {
graphics.setBackgroundColor(Color.GRAY);
graphics.clear();
}
super.paint(graphics);
}
}
class HEditField extends EditField {
public HEditField() {
super();
}
public HEditField(long style) {
super(style);
}
public HEditField(String label, String initialValue, int maxNumChars,
long style) {
super(label, initialValue, maxNumChars, style);
}
public HEditField(String label, String initialValue) {
super(label, initialValue);
}
private int mHColor = -1;
public void setHightlightColor(int color) {
mHColor = color;
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (-1 != mHColor && getManager().isFocus()) {
graphics.setBackgroundColor(mHColor);
graphics.clear();
}
super.paint(graphics);
}
}
class HButtonField extends ButtonField {
public HButtonField() {
super();
}
public HButtonField(long style) {
super(style);
}
public HButtonField(String label, long style) {
super(label, style);
}
public HButtonField(String label) {
super(label);
}
private int mHColor = -1;
public void setHightlightColor(int color) {
mHColor = color;
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (-1 != mHColor && getManager().isFocus()) {
graphics.setBackgroundColor(mHColor);
graphics.clear();
}
super.paint(graphics);
}
}
class HCheckboxField extends CheckboxField {
public HCheckboxField() {
super();
}
public HCheckboxField(String label, boolean checked, long style) {
super(label, checked, style);
}
public HCheckboxField(String label, boolean checked) {
super(label, checked);
}
private int mHColor = -1;
public void setHightlightColor(int color) {
mHColor = color;
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (-1 != mHColor && getManager().isFocus()) {
graphics.setBackgroundColor(mHColor);
graphics.clear();
}
super.paint(graphics);
}
}
class HObjectChoiceField extends ObjectChoiceField {
public HObjectChoiceField() {
super();
}
public HObjectChoiceField(String label, Object[] choices,
int initialIndex, long style) {
super(label, choices, initialIndex, style);
}
public HObjectChoiceField(String label, Object[] choices,
int initialIndex) {
super(label, choices, initialIndex);
}
public HObjectChoiceField(String label, Object[] choices,
Object initialObject) {
super(label, choices, initialObject);
}
public HObjectChoiceField(String label, Object[] choices) {
super(label, choices);
}
private int mHColor = -1;
public void setHightlightColor(int color) {
mHColor = color;
}
protected void onFocus(int direction) {
invalidate();
super.onFocus(direction);
}
protected void onUnfocus() {
invalidate();
super.onUnfocus();
}
public void paint(Graphics graphics) {
if (-1 != mHColor && getManager().isFocus()) {
graphics.setBackgroundColor(mHColor);
graphics.clear();
}
super.paint(graphics);
}
}
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