android 開發 將view儲存為image的實現及將html儲存為pdf格式

標籤：bool   flush   public   stack   ase   font   absolute   trace   cti   

一、將view儲存為image

public class ImageHelper {
　　///將view儲存到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;    }    /**     * 儲存bitmap到本地並拷貝並重新整理相簿     *     * @param context  上下文     * @param mBitmap  圖片資訊     * @param savePath  儲存路徑（臨時）     * @param fileName  檔案名稱     * @return     */    //public  String saveBitmap(Context context,Bitmap mBitmap,String savePath,String fileName) {        public  String 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 "儲存圖片到本地時報錯："+e.getMessage();        }        // 其次把檔案插入到系統圖庫//        try {//            MediaStore.Images.Media.insertImage(context.getContentResolver(),//                    filePic.getAbsolutePath(), fileName, null);//            //MyToastUtils.showShortToast(context, "儲存成功");//        } catch (FileNotFoundException e) {//            //MyToastUtils.showShortToast(context, "儲存失敗");//            e.printStackTrace();//            return "把檔案插入到系統圖庫失敗："+e.getMessage();//        }        // 最後通知圖庫更新        context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,                Uri.fromFile(new File(filePic.getPath()))));        return "Success";    }}

 二、將html代碼儲存為pdf

需要引入三個jar包：itextpdf-5.5.jar、jsoup-1.7.jar、xmlworker-5.5.3.jar

public class PDFHelper {    ///儲存檔案的方法    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 開發 將view儲存為image的實現及將html儲存為pdf格式