我正在制作一个带有文本框的小游戏。文本框将绘制一个字符串,该字符串将分成多行以适合文本框。我在“分成多行”部分遇到了一些麻烦。
String[] line = new String[4];
int boxWidth = 200;
String MESSAGE = "This is a long message to make sure that the line separation works.";
String[] splitArray = null;
try {
splitArray = MESSAGE.split("\\s+"); //split the words of the sentence into an array
} catch (PatternSyntaxException e) {
CrashDumping.DumpCrash(e);
}
String cursentence = "";
int curleng = 0;
int curline = 0;
for (int i = 0; i < splitArray.length; i++) {
if (curleng + m.getStringWidth(splitArray[i], r.font1) <= boxWidth) {
curleng += m.getStringWidth(splitArray[i], r.font1);
cursentence += splitArray[i]; cursentence += " ";
} else {
line[curline] = cursentence;
cursentence = "";
curline++;
curleng = 0;
}
}
for (int i = 0; i < line.length; i++) {
System.out.println("Line " + i + " - " + line[i]);
}
int getStringWidth(String sentence, Font font)
是我写的一个方法,它返回字符串宽度(以像素为单位)。这种方法有效;这不是问题。
public int getStringWidth(String text, Font font) {
AffineTransform affinetransform = new AffineTransform();
FontRenderContext frc = new FontRenderContext(affinetransform,true,true);
return (int)(font.getStringBounds(text, frc).getWidth());
}
输出应该如下所示:
Line 0 - This is a long message to make sure
Line 1 - that the line separation works.
Line 2 - null
Line 3 - null
但是只打印出第一行,后三行只是空。因此,出于某种原因,for
循环在完成第一行后就会中断。
这里发生了什么?
答案 0 :(得分:2)
仅在当前行已满时指定line[curline] = cursentence;
。但是你在for循环结束后没有完成任务,这意味着当你用完单词时你的余数会丢失。
在for
循环:
if (!"".equals(cursentence)) {
line[curline] = cursentence;
}
正如@rodrigoap所说,你还需要用第一行中不适合的单词开始你的新行,这个单词进入else
块而不是cursentence = "";
cursentence = splitArray[i];