这是我的问题。
当我在 3rd 方 pdf 阅读器中打开 pdf 时，它显示正确。
但是，当我使用本机 android pdf 阅读器打开 pdf 时，它无法正确显示。
它显示为
这是代码
ShowPDFActivity.java
public class ShowPDFActivity extends Activity {
public static final String FRAGMENT_PDF_RENDERER_BASIC = "pdf_renderer_basic";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pdf_container);
Intent in = getIntent();
//String filepath = in.getExtras().getString("filepath");
File f = (File)in.getExtras().get("file");
if (savedInstanceState == null) {
getFragmentManager().beginTransaction()
.add(R.id.container, new PdfRendererBasicFragment(f),
FRAGMENT_PDF_RENDERER_BASIC)
.commit();
}
}
PDFRendererBasicFragment.java
public class PdfRendererBasicFragment extends Fragment implements View.OnClickListener {
private static final String STATE_CURRENT_PAGE_INDEX = "current_page_index";
private ParcelFileDescriptor mFileDescriptor;
private PdfRenderer mPdfRenderer;
private PdfRenderer.Page mCurrentPage;
private TouchImageView mImageView;
private Button mButtonPrevious;
private Button mButtonNext;
private String filepath;
private File file;
public PdfRendererBasicFragment(File file)
{
//this.filepath = filepath;
this.file = file;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_pdf_renderer_basic, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mImageView = (TouchImageView) view.findViewById(R.id.image);
mButtonPrevious = (Button) view.findViewById(R.id.previous);
mButtonNext = (Button) view.findViewById(R.id.next);
mButtonPrevious.setOnClickListener(this);
mButtonNext.setOnClickListener(this);
// Show the first page by default.
int index = 0;
if (null != savedInstanceState) {
index = savedInstanceState.getInt(STATE_CURRENT_PAGE_INDEX, 0);
}
showPage(index);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
openRenderer(activity);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(activity, "Error! " + e.getMessage(), Toast.LENGTH_SHORT).show();
activity.finish();
}
}
@Override
public void onDetach() {
try {
closeRenderer();
} catch (IOException e) {
e.printStackTrace();
}
super.onDetach();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (null != mCurrentPage) {
outState.putInt(STATE_CURRENT_PAGE_INDEX, mCurrentPage.getIndex());
}
}
/**
* Sets up a {@link android.graphics.pdf.PdfRenderer} and related resources.
*/
private void openRenderer(Context context) throws IOException {
Log.d("FILE :",""+Environment.getExternalStorageDirectory());
//File f = new File(Environment.getExternalStorageDirectory()+"/Dec_Newsletter.pdf");
//Toast.makeText(getActivity(), "Filepath "+filepath, Toast.LENGTH_LONG).show();
//File f = new File(filepath);
//Log.d("File :", "File :"+f);
mFileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
mPdfRenderer = new PdfRenderer(mFileDescriptor);
}
private void closeRenderer() throws IOException {
if (null != mCurrentPage) {
mCurrentPage.close();
}
mPdfRenderer.close();
mFileDescriptor.close();
}
private void showPage(int index) {
if (mPdfRenderer.getPageCount() <= index) {
return;
}
if (null != mCurrentPage) {
mCurrentPage.close();
}
mCurrentPage = mPdfRenderer.openPage(index);
Bitmap bitmap = Bitmap.createBitmap(mCurrentPage.getWidth()*2, mCurrentPage.getHeight()*2,
Bitmap.Config.ARGB_8888);
// Here, we render the page onto the Bitmap.
// To render a portion of the page, use the second and third parameter. Pass nulls to get
// the default result.
// Pass either RENDER_MODE_FOR_DISPLAY or RENDER_MODE_FOR_PRINT for the last parameter.
mCurrentPage.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
bitmap.setHasAlpha(true);
bitmap.setHasMipMap(true);
// We are ready to show the Bitmap to user.
mImageView.setImageBitmap(bitmap);
saveBitmapTpSdCard(bitmap,"testimage");
updateUi();
}
/**
* Updates the state of 2 control buttons in response to the current page index.
*/
private void updateUi() {
int index = mCurrentPage.getIndex();
int pageCount = mPdfRenderer.getPageCount();
mButtonPrevious.setEnabled(0 != index);
mButtonNext.setEnabled(index + 1 < pageCount);
// getActivity().setTitle(getString(0, index + 1, pageCount));
}
/**
* Gets the number of pages in the PDF. This method is marked as public for testing.
*
* @return The number of pages.
*/
public int getPageCount() {
return mPdfRenderer.getPageCount();
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.previous: {
// Move to the previous page
showPage(mCurrentPage.getIndex() - 1);
break;
}
case R.id.next: {
// Move to the next page
showPage(mCurrentPage.getIndex() + 1);
break;
}
}
}
private void saveBitmapTpSdCard(Bitmap bitmap, String fileName) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 40, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + getString(R.string.app_name));
try {
if(!f.exists()) {
f.mkdirs();
}
File imageFile = new File(f, fileName + ".png");
FileOutputStream fo = new FileOutputStream(imageFile);
fo.write(bytes.toByteArray());
fo.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}