我想在我正在做的应用程序中实现一个PDF阅读器,我找到了几个API,但它们都不是开源的。
你们有没有知道一个好的免费替代品?
由OP稍微改编Dipak Keshariya的解决方案
第一类
package android.pdf.reader;
import java.io.File;
import java.io.FilenameFilter;
import net.sf.andpdf.pdfviewer.PdfViewerActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class First extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File images = Environment.getExternalStorageDirectory();
File[] imagelist = images.listFiles(new FilenameFilter()
{
public boolean accept(File dir, String name)
{
return ((name.endsWith(".pdf")));
}
});
String[] pdflist = new String[imagelist.length];
for(int i = 0;i<imagelist.length;i++)
{
pdflist[i] = imagelist[i].getName();
}
this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, pdflist));
}
protected void onListItemClick(ListView l, View v, int position, long id)
{
super.onListItemClick(l, v, position, id);
Object[] imagelist;
String path = ((File) imagelist[(int)id]).getAbsolutePath();
openPdfIntent(path);
}
private void openPdfIntent(String path)
{
try
{
final Intent intent = new Intent(First.this, Second.class);
intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path);
startActivity(intent);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
第二类
package android.pdf.reader;
import net.sf.andpdf.pdfviewer.PdfViewerActivity;
import android.os.Bundle;
public class Second extends PdfViewerActivity
{
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
public int getPreviousPageImageResource() {
return R.drawable.left_arrow;
}
public int getNextPageImageResource() {
return R.drawable.right_arrow;
}
public int getZoomInImageResource() {
return R.drawable.zoom_in;
}
public int getZoomOutImageResource() {
return R.drawable.zoom_out;
}
public int getPdfPasswordLayoutResource() {
return R.layout.pdf_file_password;
}
public int getPdfPageNumberResource() {
return R.layout.dialog_pagenumber;
}
public int getPdfPasswordEditField() {
return R.id.etPassword;
}
public int getPdfPasswordOkButton() {
return R.id.btOK;
}
public int getPdfPasswordExitButton() {
return R.id.btExit;
}
public int getPdfPageNumberEditField() {
return R.id.pagenum_edit;
}
}