Android PDF的生成，展示与打印

Android 6.0带来了好多功能，PDF的读取展示就是其中一项

一.PDF的生成

 DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
 // create a new document
 PdfDocument document = new PdfDocument();
 // crate a page description

for(int i=0;i<mPageCount;i++){

 PageInfo pageInfo = new PageInfo.Builder(new Rect(0, 0, displayMetrics.widthPixels, displayMetrics.heightPixels), (i+1)).create();
 // start a page
 Page page = document.startPage(pageInfo);
 // draw something on the page
 View content = getContentView();
//将View的UI会知道Canvas上
 content.draw(page.getCanvas());
 // finish the page
 document.finishPage(page);
}
FileOutputStream fos = new FileOutStream("/storage/cache/mypage.pdf");
 document.writeTo(fos );
 // close the document
 document.close();

二.PDF读取(配合ViewPager使用)

fileDes

三.打印PDF

 PrintManager printManager =
         (PrintManager) context.getSystemService(Context.PRINT_SERVICE);
         printManager.print(String printJobName, PrintDocumentAdapter documentAdapter, PrintAttributes attributes)