【发布时间】:2010-12-18 05:02:58
【问题描述】:
我想将我的字段定位在指定位置。
【问题讨论】:
标签: user-interface blackberry layout
我想将我的字段定位在指定位置。
【问题讨论】:
标签: user-interface blackberry layout
基本上要在经理中设置任何字段位置,您应该:
删除了无效的 ImageShack 链接
扩展管理员代码:
class CustomVerticalManager extends VerticalFieldManager {
LabelField mText1 = new LabelField("top");
LabelField mText2 = new LabelField("bottom");
public CustomVerticalManager() {
add(mText1);
add(mText2);
}
public int getPreferredHeight() {
return Display.getHeight();
}
public int getPreferredWidth() {
return Display.getWidth();
}
protected void sublayout(int width, int height) {
width = getPreferredWidth();
height = getPreferredHeight();
int fieldWidth = mText1.getPreferredWidth();
int fieldHeight = mText1.getPreferredHeight();
layoutChild(mText1, fieldWidth, fieldHeight);
int xPos = (width - fieldWidth) >> 1;
int yPos = 0;
setPositionChild(mText1, xPos, yPos);
fieldWidth = mText2.getPreferredWidth();
fieldHeight = mText2.getPreferredHeight();
layoutChild(mText2, fieldWidth, fieldHeight);
xPos = (width - fieldWidth) >> 1;
yPos = height - fieldHeight;
setPositionChild(mText2, xPos, yPos);
setExtent(width, height);
}
}
使用示例:
class Scr extends MainScreen {
CustomVerticalManager mManager = new CustomVerticalManager();
public Scr() {
add(mManager);
}
}
另见
Wireless - How to : Create a custom layout manager for a screen
Blackberry - fields layout animation
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