如何通过从SD卡意图打开PDF [英] How to open a PDF via Intent from SD card
问题描述
我试图启动一个意图
在我的应用程序打开里面我的资产文件夹中的PDF文件。我读过几十个帖子,但我仍然坚持。显然,我需要将PDF复制到SD卡头,然后启动一个意图
。它仍然无法正常工作。
I'm trying to launch an Intent
to open a pdf inside my assets folder in my app. I've read dozens of posts but am still stuck. Apparently I need to copy the pdf to the sd card first then launch an Intent
. It still doesn't work.
我认为这个问题是意图
启动,所以我只是试图打开一个文件为例.pdf,我复制到SD卡中使用此code:
I think the problem is the Intent
launching so I'm simply trying to open a file "example.pdf" that I copied onto the SD card using this code:
Log.w("IR", "TRYING TO RENDER: " + Environment.getExternalStorageDirectory().getAbsolutePath()+"/example.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath()+"/example.pdf"), "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
Log.e("IR", "No exception");
}
catch (ActivityNotFoundException e) {
Log.e("IR", "error: " + e.getMessage());
Toast.makeText(InvestorRelations.this,
"No Application Available to View PDF",
Toast.LENGTH_SHORT).show();
}
这是我的LogCat中输出。
This is my LogCat output.
05-10 10:35:10.950: W/IR(4508): TRYING TO RENDER: /mnt/sdcard/example.pdf
05-10 10:35:10.960: E/IR(4508): No exception
除了当此code运行时,我得到以下吐司(不是我的应用程序产生的)
Except when this code is run, I get the following Toast (not produced by my app)
不支持的文件类型
不过,我可以通过安装在PDF查看应用程序手动打开该文件。任何帮助将是巨大的AP preciated。
But I can open the document manually through the PDF viewing app installed. Any help would be hugely appreciated.
推荐答案
试试这个code,显示PDF文件在/ SD卡
Try this code, display pdf file From /sdcard
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/example.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);
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