Android如何通过编码读取PDF文件
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button OpenPDF = (Button) findViewById(R.id.button);
OpenPDF.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
File pdfFile = new File("res/raw/comic.pdf");
if(pdfFile.exists())
{
//Uri path = Uri.fromFile(pdfFile);
Uri path = Uri.parse("android.resource://" + getPackageName() + "/ R.raw.comic.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
// Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
// Intent pdfIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("content://package.name/" + pdfFile));
// pdfIntent.setDataAndType(path, "/assets/arduino-comic-latest.pdf");
// pdfIntent.setType("application/pdf");
// pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try
{
startActivity(intent);
}
catch(ActivityNotFoundException e)
{
Toast.makeText(MainActivity.this, "No Application available to view pdf", Toast.LENGTH_LONG).show();
}
}
}
});
我已经完成了这段代码,但是找不到文件的路径。我必须做什么?任何人都可以帮助我
,谢谢
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button OpenPDF = (Button) findViewById(R.id.button);
OpenPDF.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
File pdfFile = new File("res/raw/comic.pdf");
if(pdfFile.exists())
{
//Uri path = Uri.fromFile(pdfFile);
Uri path = Uri.parse("android.resource://" + getPackageName() + "/ R.raw.comic.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
// Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
// Intent pdfIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("content://package.name/" + pdfFile));
// pdfIntent.setDataAndType(path, "/assets/arduino-comic-latest.pdf");
// pdfIntent.setType("application/pdf");
// pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try
{
startActivity(intent);
}
catch(ActivityNotFoundException e)
{
Toast.makeText(MainActivity.this, "No Application available to view pdf", Toast.LENGTH_LONG).show();
}
}
}
});
I have done this code but this is not find the path of the file.what I have to do??can Anyone help me
Thankyou
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你不能直接这样做,你必须使用 Native Library 来阅读 PDF...库可能是 iText、jPedal、Mupdf、Pdfbox...等。Google 一下
you cant do that directly, you have to use Native Library for reading PDF... library may be iText, jPedal, Mupdf, Pdfbox... etc. Google it