问题描述
你好,我是在新的Android开发刍议 我想知道怎么上传图片的机器人 我不发现任何有用的教程本 ü可以给我一些指导,请,帮助我。
hello i am new in android devlopment i want to know how to upload an image in android i dont found any usefull tutorial for this can u give me some instruction,pls,help me out.
推荐答案
我建立了这个可爱的小方法,您:
I built this lil methods for you:
private boolean handlePicture(String filePath, String mimeType) {
HttpURLConnection connection = null;
DataOutputStream outStream = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String urlString = "http://www.yourwebserver.com/youruploadscript.php";
try {
FileInputStream fileInputStream = null;
try {
fileInputStream = new FileInputStream(new File(filePath));
} catch(FileNotFoundException e) { }
URL url = new URL(urlString);
connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
outStream = new DataOutputStream(connection.getOutputStream());
outStream.writeBytes(addParam("someparam", "content of some param", twoHyphens, boundary, lineEnd));
outStream.writeBytes(twoHyphens + boundary + lineEnd);
outStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"" + filePath +"\"" + lineEnd + "Content-Type: " + mimeType + lineEnd + "Content-Transfer-Encoding: binary" + lineEnd);
outStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
outStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outStream.writeBytes(lineEnd);
outStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
fileInputStream.close();
outStream.flush();
outStream.close();
} catch (MalformedURLException e) {
Log.e("DEBUG", "[MalformedURLException while sending a picture]");
} catch (IOException e) {
Log.e("DEBUG", "[IOException while sending a picture]");
}
try {
inStream = new DataInputStream( connection.getInputStream() );
String str;
while (( str = inStream.readLine()) != null) {
if(str=="1") {
return true;
} else {
return false;
}
}
inStream.close();
} catch (IOException e){
Log.e("DEBUG", "[IOException while sending a picture and receiving the response]");
}
return false;
}
private String addParam(String key, String value, String twoHyphens, String boundary, String lineEnd) {
return twoHyphens + boundary + lineEnd + "Content-Disposition: form-data; name=\"" + key + "\"" + lineEnd + lineEnd + value + lineEnd;
}
如果工作至今。在你的网络服务器,你需要一些PHP脚本,它返回一个1成功上传和别的东西了一个错误。我也建议这样做的AsyncTask的,以prevent阻止上传过程中用户。在Web服务器方面,你已经得到了名为UploadedFile的文件。希望帮助!
Should work so far. On your webserver you need some PHP Script which returns a "1" for a successful upload and something else for an error. I also suggest to do this in a ASyncTask, to prevent blocking the user during the uploading.On the webserver side you've got a file in the name "uploadedfile". Hope that helps!
这篇关于Android的图片上传的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!