Java Android将webview转换为PDF
我正在尝试将Android中的webview转换为pdf文件。这是当我的按钮是onClick时的功能:Java Android将webview转换为PDF,java,android,pdf,webview,Java,Android,Pdf,Webview,我正在尝试将Android中的webview转换为pdf文件。这是当我的按钮是onClick时的功能: public void export(WebView wv) { Context context = getApplication(); String jobName = context.getString(R.string.app_name) + " Document"; PrintAttributes attributes = new PrintAttributes
public void export(WebView wv) {
Context context = getApplication();
String jobName = context.getString(R.string.app_name) + " Document";
PrintAttributes attributes = new PrintAttributes.Builder()
.setMediaSize(PrintAttributes.MediaSize.ISO_A4)
.setResolution(new PrintAttributes.Resolution("pdf", "pdf", 600, 600))
.setMinMargins(PrintAttributes.Margins.NO_MARGINS).build();
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM + "/PDFTest/");
PdfPrint pdfPrint = new PdfPrint(attributes);
pdfPrint.print(wv.createPrintDocumentAdapter(jobName), path, "output_" + System.currentTimeMillis() + ".pdf");
}
以及PdfPrint类:
public class PdfPrint {
private static final String TAG = PdfPrint.class.getSimpleName();
private final PrintAttributes printAttributes;
public PdfPrint(PrintAttributes printAttributes) {
this.printAttributes = printAttributes;
}
public void print(PrintDocumentAdapter printAdapter, final File path, final String fileName) {
printAdapter.onLayout(null, printAttributes, null, new PrintDocumentAdapter.LayoutResultCallback() {
@Override
public void onLayoutFinished(PrintDocumentInfo info, boolean changed) {
printAdapter.onWrite(new PageRange[]{PageRange.ALL_PAGES}, getOutputFile(path, fileName), new CancellationSignal(), new PrintDocumentAdapter.WriteResultCallback() {
@Override
public void onWriteFinished(PageRange[] pages) {
super.onWriteFinished(pages);
}
});
}
}, null);
}
private ParcelFileDescriptor getOutputFile(File path, String fileName) {
if (!path.exists()) {
path.mkdirs();
}
File file = new File(path, fileName);
try {
file.createNewFile();
return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_WRITE);
} catch (Exception e) {
Log.e(TAG, "Failed to open ParcelFileDescriptor", e);
}
return null;
}
}
但是,我在PrintDocumentAdapter.WriteResultCallback()处收到编译错误消息。
错误消息是
WriteResultCallback在中不是公共的
android.print.PrintDocumentAdapter.WriteResultCallback。不可能
从包外访问
问题是我找不到android.print包。有什么想法吗?谢谢 您可以尝试在
src
文件夹中创建一个名为:android.print
的包。然后用“打印”方法在那里创建一个文件
或者
有一个很好用的lib
使用示例:
File directory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM + "/PDFTest/");
final String fileName="Test.pdf";
final ProgressDialog progressDialog=new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Please wait");
progressDialog.show();
PdfView.createWebPrintJob(MainActivity.this, webView, directory, fileName, new PdfView.Callback() {
@Override
public void success(String path) {
progressDialog.dismiss();
PdfView.openPdfFile(MainActivity.this,getString(R.string.app_name),"Do you want to open the pdf file?"+fileName,path);
}
@Override
public void failure() {
progressDialog.dismiss();
}
});
正如在android.print?@hyperfkcb下将PdfPrint中的print()移动到新文件中一样,正确,但我更喜欢使用我提到的lib
ConvertWebViewToPdfDemo
更可靠。很抱歉,我的意思是我可以将PdfPrint类移到android.print文件夹中吗?@hyperfkcb是的,将你的PdfPrint.java
类移到这里yeap yeap,但我在viewmodel中实现函数时,在尝试获取活动时遇到了一些问题