android 开发将view保存为image的实现及将html保存为pdf格式 _ANDROID

青春须早为，岂能长少年。这篇文章主要讲述android 开发将view保存为image的实现及将html保存为pdf格式相关的知识，希望能为你提供帮助。
一、将view保存为image

public class ImageHelper {
///将view保存到bitmap中 public Bitmap createBitmap(View view) { int widthSpec = View.MeasureSpec.makeMeasureSpec(view.getLayoutParams().width, View.MeasureSpec.EXACTLY); int heightSpec = View.MeasureSpec.makeMeasureSpec(view.getLayoutParams().height, View.MeasureSpec.EXACTLY); view.measure(widthSpec, heightSpec); int measureWidth = view.getMeasuredWidth(); int measureHeight = view.getMeasuredHeight(); view.layout(0, 0, measureWidth, measureHeight); int width = view.getWidth(); int height = view.getHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); view.draw(canvas); return bitmap; } /** * 保存bitmap到本地并拷贝并刷新相册 * * @param context上下文 * @param mBitmap图片信息 * @param savePath保存路径（临时） * @param fileName文件名 * @return */ //publicString saveBitmap(Context context,Bitmap mBitmap,String savePath,String fileName) { publicString saveBitmap(Context context,Bitmap mBitmap,String savePath) { File filePic; try { filePic = new File(savePath); if (!filePic.exists()) { filePic.getParentFile().mkdirs(); filePic.createNewFile(); } FileOutputStream fos = new FileOutputStream(filePic); mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos); fos.flush(); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); return "保存图片到本地时报错："+e.getMessage(); } // 其次把文件插入到系统图库 //try { //MediaStore.Images.Media.insertImage(context.getContentResolver(), //filePic.getAbsolutePath(), fileName, null); ////MyToastUtils.showShortToast(context, "保存成功"); //} catch (FileNotFoundException e) { ////MyToastUtils.showShortToast(context, "保存失败"); //e.printStackTrace(); //return "把文件插入到系统图库失败："+e.getMessage(); //} // 最后通知图库更新 context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(new File(filePic.getPath())))); return "Success"; } }

二、将html代码保存为pdf
需要引入三个jar包：itextpdf-5.5.jar、jsoup-1.7.jar、xmlworker-5.5.3.jar

public class PDFHelper {///保存文件的方法 public String createPDF(String rawHTML, String fileName, ContextWrapper context){File file = new File(fileName); try{ Document document = new Document(); PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file)); document.open(); //HTML String htmlText = Jsoup.clean( rawHTML, Whitelist.relaxed() ); InputStream inputStream = new ByteArrayInputStream( htmlText.getBytes() ); //PDF XMLWorkerHelper.getInstance().parseXHtml(writer, document, inputStream, null, Charset.defaultCharset(), new MyFont()); document.close(); return ""; } catch (FileNotFoundException e) { e.printStackTrace(); return "Error|"+e.getMessage(); } catch (DocumentException e) { e.printStackTrace(); return "Error|"+e.getMessage(); } catch (IOException e) { e.printStackTrace(); return "Error|"+e.getMessage(); } }public class MyFont implements FontProvider { private static final String FONT_PATH = "/system/fonts/DroidSansFallback.ttf"; private static final String FONT_ALIAS = "my_font"; public MyFont() { FontFactory.register(FONT_PATH, FONT_ALIAS); }@Override public Font getFont(String fontname, String encoding, boolean embedded, float size, int style, BaseColor color) {return FontFactory.getFont(FONT_ALIAS, BaseFont.IDENTITY_H, BaseFont.EMBEDDED, size, style, color); }@Override public boolean isRegistered(String name) { return name.equals(FONT_ALIAS); } } }

【android 开发将view保存为image的实现及将html保存为pdf格式】