黑莓 - 设置背景的LabelField色 [英] Blackberry - Setting LabelField background color

问题描述

我要放置几个LabelFields与一个MainScreen右对齐文本与爱丽丝蓝色背景。不幸的是，我似乎无法弄清楚如何做到这一点。

I want to place several LabelFields with right-aligned text on a MainScreen with an alice blue background. Unfortunately I can't seem to figure out how to make that happen.

我能做的就是把我的底色为Color.ALICEBLUE在屏幕上MainScreen和地点LabelFields最好的（也有爱丽丝蓝色背景）。

The best I can do is set my backround to Color.ALICEBLUE on a MainScreen and place LabelFields on the screen (also with a alice blue background).

    public void paint(Graphics graphics) {
        graphics.setBackgroundColor(Color.ALICEBLUE);
        graphics.clear();
        super.paint(graphics);  
    }

和...

    LabelField display = new LabelField("", LabelField.FIELD_RIGHT){
        public void paint(Graphics graphics) {
            graphics.setColor(Color.DIMGRAY);
            graphics.setBackgroundColor(Color.ALICEBLUE);
            graphics.clear();
            super.paint(graphics);  
        }
    };

重写MainScreen油漆例行给我我的爱丽丝蓝色的背景，但是覆盖LabelFields油漆程序似乎并不足够。其结果是一个白色的排，只有标签文本后面翘蓝色背景。添加 USE_ALL_WIDTH 修正背景的问题，但我不能正确使用 USE_ALL_WIDTH 对齐。

Overriding the MainScreen paint routine gives me my alice blue background, but overriding the LabelFields' paint routines does not seem to be adequate. The result is a white row, with a alice blue background behind the label text only. Adding USE_ALL_WIDTH corrects the background issue, but I can't right align with USE_ALL_WIDTH.

有谁知道围绕着工作呢？

Does anyone know a work around for this?

推荐答案

在版本＆LT; = 4.5，你可以用overrided油漆创建VerticalFieldManager（）：

In versions <= 4.5 you can create VerticalFieldManager with overrided paint():

class BGManager extends VerticalFieldManager {
    public BGManager() {
    	super(USE_ALL_HEIGHT|USE_ALL_WIDTH);
    }
    public void paint(Graphics graphics)
    {
        graphics.setBackgroundColor(Color.DARKRED);
        graphics.clear();
        super.paint(graphics);
    }
}

然后用它屏幕的youre添加简单的labelField属性它：

Then use it on youre screen adding simple LabelField to it:

class Scr extends MainScreen {
    BGManager manager = new BGManager();
    public Scr() {
    	super();
    	add(manager);		
    	manager.add(new LabelField("Hello!", FIELD_RIGHT));
    	manager.add(new LabelField("This is a test", FIELD_RIGHT));
    }
}

在版本> = 4.6可以使用setBackgroud（）为默认的屏幕管理方式：

In versions >= 4.6 you can use setBackgroud() method for default screen manager:

class Scr extends MainScreen {  
    public Scr() {
    	super();
    	VerticalFieldManager manager = 
    		(VerticalFieldManager)getMainManager();
    	manager.setBackground(
    		BackgroundFactory.createSolidBackground(
	    		Color.DARKRED));		
    	manager.add(new LabelField("Hello!", FIELD_RIGHT));
    	manager.add(new LabelField("This is a test", FIELD_RIGHT));
    }
}

请参阅BB KB DB-00131 - 如何 - 改变屏幕的背景颜色

这篇关于黑莓 - 设置背景的LabelField色的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！