Android的TextView在显示文字的时候有个问题就是一行还没显示满就跳到下一行，原因是：
1） TextView在显示中文的时候 标点符号不能显示在一行的行首和行尾，如果一个标点符号刚好在一行的行尾，该标点符号就会连同前一个字符跳到下一行显示；
2）一个英文单词不能被显示在两行中（ TextView在显示英文时，标点符号是可以放在行尾的，但英文单词也不能分开 ）；
如果只是想让标点符号可以显示在行尾，有一个简单的方法就是在标点符号后加一个空格，则该标点符号就可以显示在行尾了；
如果想要两端对齐的显示效果，有两种方法：
if (c == ' ' || c == '/t' ||
((c == '.' || c == ',' || c == ':' || c == ';') &&
(j - 1 < here || !Character.isDigit(chs[j - 1 - start])) &&
(j + 1 >= next || !Character.isDigit(chs[j + 1 - start]))) ||
((c == '/' || c == '-') &&
(j + 1 >= next || !Character.isDigit(chs[j + 1 - start]))) ||
(c >= FIRST_CJK && isIdeographic(c, true) &&
j + 1 < next && isIdeographic(chs[j + 1 - start], false))) {
okwidth = w;
ok = j + 1;
if (fittop < oktop)
oktop = fittop;
if (fitascent < okascent)
okascent = fitascent;
if (fitdescent > okdescent)
okdescent = fitdescent;
if (fitbottom > okbottom)
okbottom = fitbottom;
}
2）自定义View显示文本
1）继承View类或其子类，例子继承了TextView类；
2）写构造函数，通过XML获取属性（这一步中可以自定义属性，见例程）；
3）重写父类的某些函数，一般都是以on开头的函数，例子中重写了onDraw()和onMeasure()函数；
public class StartCustomTextView extends TextView {
public static int m_iTextHeight; //文本的高度
public static int m_iTextWidth;//文本的宽度
private Paint mPaint = null;
private String string="";
private float LineSpace = 0;//行间距
private int left_Margin;
private int right_Margin;
private int bottom_Margin;
public StartCustomTextView(Context context, AttributeSet set)
{
super(context,set);
DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
TypedArray typedArray = context.obtainStyledAttributes(set, R.styleable.CYTextView);
int width = displayMetrics.widthPixels;
left_Margin = 29;
right_Margin = 29;
bottom_Margin = 29;
width = width - left_Margin -right_Margin;
float textsize = typedArray.getDimension(R.styleable.CYTextView_textSize, 34);
int textcolor = typedArray.getColor(R.styleable.CYTextView_textColor, getResources().getColor(R.color.white));
float linespace = typedArray.getDimension(R.styleable.CYTextView_lineSpacingExtra, 15);
int typeface = typedArray.getColor(R.styleable.CYTextView_typeface, 0);
typedArray.recycle();
//设置 CY TextView的宽度和行间距www.linuxidc.com
m_iTextWidth=width;
LineSpace=linespace;
// 构建paint对象
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setColor(textcolor);
mPaint.setTextSize(textsize);
switch(typeface){
case 0:
mPaint.setTypeface(Typeface.DEFAULT);
break;
case 1:
mPaint.setTypeface(Typeface.SANS_SERIF);
break;
case 2:
mPaint.setTypeface(Typeface.SERIF);
break;
case 3:
mPaint.setTypeface(Typeface.MONOSPACE);
break;
default:
mPaint.setTypeface(Typeface.DEFAULT);
break;
}
}
@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
char ch;
int w = 0;
int istart = 0;
int m_iFontHeight;
int m_iRealLine=0;
int x=2;
int y=30;
Vector m_String=new Vector();
FontMetrics fm = mPaint.getFontMetrics();
m_iFontHeight = (int) Math.ceil(fm.descent - fm.top) + (int)LineSpace;//计算字体高度（字体高度＋行间距）
for (int i = 0; i < string.length(); i++)
{
ch = string.charAt(i);
float[] widths = new float[1];
String srt = String.valueOf(ch);
mPaint.getTextWidths(srt, widths);
if (ch == '\n'){
m_iRealLine++;
m_String.addElement(string.substring(istart, i));
istart = i + 1;
w = 0;
}else{
w += (int) (Math.ceil(widths[0]));
if (w > m_iTextWidth){
m_iRealLine++;
m_String.addElement(string.substring(istart, i));
istart = i;
i--;
w = 0;
}else{
if (i == (string.length() - 1)){
m_iRealLine++;
m_String.addElement(string.substring(istart, string.length()));
}
}
}
}
m_iTextHeight=m_iRealLine*m_iFontHeight+2;
canvas.setViewport(m_iTextWidth, m_iTextWidth);
for (int i = 0, j = 0; i < m_iRealLine; i++, j++)
{
canvas.drawText((String)(m_String.elementAt(i)), x, y+m_iFontHeight * j, mPaint);
}
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int measuredHeight = measureHeight(heightMeasureSpec);
int measuredWidth = measureWidth(widthMeasureSpec);
this.setMeasuredDimension(measuredWidth, measuredHeight);
LayoutParams layout = new LinearLayout.LayoutParams(measuredWidth,measuredHeight);
layout.leftMargin= left_Margin;
layout.rightMargin= right_Margin;
layout.bottomMargin= bottom_Margin;
this.setLayoutParams(layout);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
private int measureHeight(int measureSpec)
{
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
// Default size if no limits are specified.
initHeight();
int result = m_iTextHeight;
if (specMode == MeasureSpec.AT_MOST){
// Calculate the ideal size of your
// control within this maximum size.
// If your control fills the available
// space return the outer bound.
result = specSize;
}else if (specMode == MeasureSpec.EXACTLY){
// If your control can fit within these bounds return that value.
// result = specSize;
}
return result;
}
private void initHeight()
{
//设置 CY TextView的初始高度为0
m_iTextHeight=0;
//大概计算 CY TextView所需高度
FontMetrics fm = mPaint.getFontMetrics();
int m_iFontHeight = (int) Math.ceil(fm.descent - fm.top) + (int)LineSpace;
int line=0;
int istart=0;
int w=0;
for (int i = 0; i < string.length(); i++)
{
char ch = string.charAt(i);
float[] widths = new float[1];
String srt = String.valueOf(ch);
mPaint.getTextWidths(srt, widths);
if (ch == '\n'){
line++;
istart = i + 1;
w = 0;
}else{
w += (int) (Math.ceil(widths[0]));
if (w > m_iTextWidth){
line++;
istart = i;
i--;
w = 0;
}else{
if (i == (string.length() - 1)){
line++;
}
}
}
}
m_iTextHeight=(line)*m_iFontHeight+2;
}
private int measureWidth(int measureSpec)
{
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
// Default size if no limits are specified.
int result = 500;
if (specMode == MeasureSpec.AT_MOST){
// Calculate the ideal size of your control
// within this maximum size.
// If your control fills the available space
// return the outer bound.
result = specSize;
}else if (specMode == MeasureSpec.EXACTLY){
// If your control can fit within these bounds return that value.
result = specSize;
}
return result;
}
public void SetText(String text)
{
string = text;
// requestLayout();
// invalidate();
}
}
<resources>
<attr name="textwidth" format="integer"/>
<attr name="typeface">
<enum name="normal" value="0"/>
<enum name="sans" value="1"/>
<enum name="serif" value="2"/>
<enum name="monospace" value="3"/>
</attr>
<declare-styleable name="CYTextView">
<attr name="textwidth" />
<attr name="textSize" format="dimension"/>
<attr name="textColor" format="reference|color"/>
<attr name="lineSpacingExtra" format="dimension"/>
<attr name="typeface" />
</declare-styleable>
</resources>
：http://hi.baidu.com/java_rose/blog/item/2940a030d1ec7f3e96ddd847.html