下载并打开pdf文件,前提是手机上有可打开pdf文件的应用
class="java" name="code">System.out.println("我点击了按钮");
String urlString = "http://public.dhe.ibm.com/common/ssi/ecm/en/wsd14109usen/WSD14109USEN.PDF";
try {
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection)
url.openConnection();
connection.setRequestMethod("GET");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
//实现连接
connection.connect();
System.out.println("connection.getResponseCode()="+connection.getResponseCode());
if (connection.getResponseCode() == 200) {
InputStream is = connection.getInputStream();
//以下为下载操作
byte[] arr = new byte[1];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BufferedOutputStream bos = new BufferedOutputStream(baos);
int n = is.read(arr);
while (n > 0) {
bos.write(arr);
n = is.read(arr);
}
bos.close();
String path = Environment.getExternalStorageDirectory()
+ "/download/";
String[] name = urlString.split("/");
path = path + name[name.length - 1];
System.out.println("name="+name);
System.out.println("path="+path);
File file = new File(path);
FileOutputStream fos = new FileOutputStream(file);
fos.write(baos.toByteArray());
fos.close();
//关闭网络连接
connection.disconnect();
System.out.println("下载完成");
if (file.exists()) {
System.out.println("打开");
Uri path1 = Uri.fromFile(file);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path1, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
}
catch (ActivityNotFoundException e) {
System.out.println("打开失败");
}
}
}
} catch (IOException e) {
// TODO: handle exception
System.out.println(e.getMessage());
}