这是我的按钮点击代码:
private View.OnClickListener onButton1=new View.OnClickListener() {
public void onClick(View v){
copyAssets();
File rootDir = Environment.getExternalStorageDirectory();
File file = new File(rootDir + "/sdcard/" +"save.pdf");
if(file.exists())
{
// do action here
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.fromFile(file));
intent.setType("application/pdf");
startActivity(intent);
}
else {
Toast.makeText(getApplicationContext(), "File does not exist", Toast.LENGTH_LONG).show();
}
}
};
copyAssets()是一个函数,通过它我可以将文件从我的资源文件夹复制到我的SD卡,它在我检查设备时正常工作,但是当我点击按钮时我无法打开它。我的文件在SD卡上命名为save.pdf
答案 0 :(得分:1)
您可以通过以下路径阅读SDCard的pdf文件:
File pdfFile = new File(path);
if(pdfFile.exists())
{
Uri path = Uri.fromFile(pdfFile);
Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path, "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try
{
startActivity(pdfIntent);
}
catch(ActivityNotFoundException e)
{
Toast.makeText(uractivity.this, "File does not exist", Toast.LENGTH_LONG).show();
}
}