StaticLayout是android中处理文字换行的一个工具类，StaticLayout已经实现了文本绘制换行处理。它跟TextView的效果是一样的，其实TextView也是调用StaticLayout来实现换行的。
public StaticLayout(CharSequence source,
int bufstart,
int bufend,
TextPaint paint,
int outerwidth,
Layout.Alignment align,
float spacingmult,
float spacingadd,
boolean includepad,
TextUtils.TruncateAt ellipsize,
int ellipsizedWidth)
1.需要分行的字符串
2.需要分行的字符串从第几的位置开始
3.需要分行的字符串到哪里结束
4.画笔对象
5.layout的宽度，字符串超出宽度时自动换行。
6.layout的对其方式，有ALIGN_CENTER， ALIGN_NORMAL， ALIGN_OPPOSITE 三种。
7.相对行间距，相对字体大小，1.5f表示行间距为1.5倍的字体高度。
8.在基础行距上添加多少
实际行间距等于这两者的和。
9.参数未知
10.从什么位置开始省略
11.超过多少开始省略
需要指出的是这个layout是默认画在Canvas的(0,0)点的，如果需要调整位置只能在draw之前移Canvas的起始坐标
canvas.translate(x,y);
生成长图功能的实现：
public static Bitmap getBitmap(Context context, EditText mEditText) {
Editable editable = mEditText.getText();
TextPaint textPaint = new TextPaint();
textPaint.setARGB(0xFF, 0, 0, 0);
textPaint.setTextSize(mEditText.getTextSize() - DisplayUtils.sp2px(context, 2));
// 设置字体
String fontPath = Cache.read_String(SharedPreferencesKey.KEY_FONT, "");
if (!TextUtils.isEmpty(fontPath)) {
File fontFile = new File(fontPath);
if (fontFile.isFile() && fontFile.exists())
textPaint.setTypeface(Typeface.createFromFile(fontFile));
}
ScreenInfo mScreenInfo = ScreenInfo.getInstance();
float bitmapWidth = mScreenInfo.getWidthPixels()
- DisplayUtils.dip2px(context, 10);
float padding = DisplayUtils.dip2px(context, 15);
StaticLayout layout = new StaticLayout(editable, textPaint,
(int) (bitmapWidth - padding * 4), Alignment.ALIGN_NORMAL,
1.2F, 0.0F, true);
float bitmapHeight = layout.getHeight() + padding * 10;
Bitmap bitmap = null;
try {
bitmap = Bitmap.createBitmap((int) bitmapWidth, (int) bitmapHeight,
Bitmap.Config.ARGB_8888);
} catch (OutOfMemoryError e) {
e.printStackTrace();
return null;
}
Canvas paper = new Canvas(bitmap);
paper.drawColor(ColorSelectView.getColor(2));
paper.translate(padding * 2, padding * 4);
layout.draw(paper);
paper.translate(-padding * 2, -padding * 4);
Paint mPaint = new Paint(Paint.DITHER_FLAG);
mPaint.setColor(Color.GRAY);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeWidth(DisplayUtils.dip2px(context, 0.5f));
float offset = DisplayUtils.dip2px(context, 2);
paper.drawRect(new Rect((int) (padding), (int) (padding * 2),
(int) (bitmapWidth - padding),
(int) (bitmapHeight - padding * 4)), mPaint);
paper.drawRect(new Rect((int) (padding - offset),
(int) (padding * 2 - offset), (int) (padding),
(int) (padding * 2)), mPaint);
paper.drawRect(new Rect((int) (bitmapWidth - padding),
(int) (padding * 2 - offset),
(int) (bitmapWidth - padding + offset), (int) (padding * 2)),
mPaint);
paper.drawRect(new Rect((int) (padding - offset),
(int) (bitmapHeight - padding * 4), (int) (padding),
(int) (bitmapHeight - padding * 4 + offset)), mPaint);
paper.drawRect(new Rect((int) (bitmapWidth - padding),
(int) (bitmapHeight - padding * 4), (int) (bitmapWidth
- padding + offset),
(int) (bitmapHeight - padding * 4 + offset)), mPaint);
paper.drawRect(new Rect((int) (padding + offset),
(int) (padding * 2 + offset),
(int) (bitmapWidth - padding - offset), (int) (bitmapHeight
- padding * 4 - offset)), mPaint);
TextPaint fromTextPaint = new TextPaint();
fromTextPaint.setColor(Color.GRAY);
fromTextPaint.setTextSize(DisplayUtils.sp2px(context, 12));
StaticLayout fromLayout = new StaticLayout(Cache.read_String(
KEY_SHARE_TAIL, context.getString(R.string.share_image_info)),
fromTextPaint, (int) (bitmapWidth - padding * 3.5),
Alignment.ALIGN_NORMAL, 1.0F, 0.0F, true);
paper.translate(padding, bitmapHeight - padding * 3);
fromLayout.draw(paper);
return bitmap;
}
static public Boolean printBill(Activity context) {
try {
int height = 50 + 14 * 30;
// 打印高度计算：每多一行加50
Bitmap bitmap = Bitmap
.createBitmap(WIDTH, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawColor(Color.WHITE);
TextPaint paint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
paint.setStrokeWidth(1);
paint.setColor(Color.BLACK);
paint.setTypeface(Typeface.SANS_SERIF);
String content = "";
StaticLayout layout;
// 打印标题--购物小票
paint.setTextSize(32);
content = "备注信息";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_CENTER, 1F, 0, false);
canvas.translate(0, 0);
layout.draw(canvas);
// 分割线
content = "======================\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
// 打印客户姓名
content = "客户姓名： " + customerName + "\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
// 打印门店名称
content = "门店名称： " + orgName + "\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
// 打印款项
content = "款项类型： " + type + "\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
// 打印ERP单号
content = "ERP单号： " + erpCode + "\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
// 打印HY单号
content = "HY单号: " + jtlOrderNo + "\r\n";
layout = new StaticLayout(content, paint, (int) (400),
Layout.Alignment.ALIGN_NORMAL, 1F, 0, false);
canvas.translate(0, 50);
layout.draw(canvas);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
String path = Environment.getExternalStorageDirectory()
+ "/image.png";
System.out.println(path);
FileOutputStream os = new FileOutputStream(new File(path));
bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
os.flush();
os.close();
AppHelper.callPrint(context, path);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
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