Bitmap annotation not added in PDF.

i used this code.
But in some PDF annoation added but in some PDF no added.
But some time annotation added in that file.
I can't under stand for real issue
reply here,it's urgent call.

m_doc.SetCache(Global.tmp_path + "/temp.dat");
int c_page = Constant.currentpage;
pa = m_doc.GetPage(c_page);
pa.ObjsStart();
PDFVPage vpage = m_rPDF.m_view.vGetPage(c_page);
m_rPDF.m_view.vRender(vpage);
float[] rect = { 200, 200, (200 + bitmap.getWidth()),
(200 + bitmap.getHeight()) };
boolean b = pa.AddAnnotBitmap(bitmap, true, rect);
int count = pa.GetAnnotCount();
Log.e("TAG", b+ " annoation Annot count" + count);
float m_ratio = ((float) m_doc.GetPageHeight(c_page))
/ ((float) m_doc.GetPageWidth(c_page));
Matrix mat = new Matrix(m_ratio, -m_ratio, 0,
m_doc.GetPageHeight(c_page) * m_ratio);
int dib = Global.dibGet(0, (int) m_doc.GetPageWidth(c_page),
(int) m_doc.GetPageHeight(c_page));
pa.RenderPrePare(dib);
pa.RenderToBmp(bitmap, mat);
m_rPDF.m_view.vRender(vpage);
if (bitmap != null && !bitmap.isRecycled()) {
bitmap.recycle();
bitmap = null;
}

1. Global.tmp_path + "/temp.dat" only can be used in 1 document object, the second document shall failed.
2. to be sure Constant.currentpage has exist in all PDF file.
3. to be sure (200, 200, 200 + bmp.width, 200 + bmp.height) are all at page area.
codes like:

Yes,
i used this code but first time annotation added in PDF,but second time annotation not added in that PDF.

This was PDF file in which bitmap annotation not added

Send require code for add bitmap annotation in current page.
it's too urgent.
we got this issue from number of users.
reply here

may you attach pdf file, that failed to AddAnnotBitmap?