如何拍一张照片并发送HTTP POST请求与Android? [英] How to take a photo and send to HTTP POST request with Android?
问题描述
我知道这有答案,在这里和那里,但我不能让任何人工作。是否有人知道一个很好的参考,或教程对于这一点,也许还张贴在这里?
I know this has answers here and there, but I couldn't make any of them work. Does anybody know a good reference, or a tutorial for this, maybe also post here?
我需要做的是:
1)提供一个按钮,打开的照相机应用程序。我已经被做过一个 startResultActivity()
1) provide a button, that opens the camera application. I have done this by a startResultActivity()
2)用户需要的相片,并返回到该应用程序,与照片保存,preferably用preVIEW在ImageView的。我尝试了,但我不能在一个模拟的设备进行测试。
2) user takes the photo, and returns to the application, with the photo saved, preferably with a preview in an ImageView. I tried something, but I cannot test in an emulated device.
3)presses一个发送按钮,应用程序发送的图片以HTTP POST。随着多部分,不管它是什么。 PHP的开发者不希望我将图片发送作为从位图阵列转换为字符串。
3) presses a "send" button, and the application sends the picture to HTTP POST. With "multipart", whatever that is. The php developer does not want me to send the picture as a string converted from a bitmap array.
有任何的帮助将是AP preciated。谢谢!
Any help for this will be appreciated. Thanks !
推荐答案
这个环节应该是绰绰有余了一下,保存和获取图像的路径: 捕获映像
This link should be more than sufficient for clicking, saving and getting path of an image: Capture Images
这是我写的通过HTTP POST上传图片类:
This is the class i wrote for uploading images via HTTP POST:
public class MultipartServer {
private static final String TAG = "MultipartServer";
private static String crlf = "\r\n";
private static String twoHyphens = "--";
private static String boundary = "*****";
private static String avatarPath = null;
public static String postData(URL url, List<NameValuePair> nameValuePairs) throws IOException {
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setReadTimeout(10000);
connection.setConnectTimeout(15000);
connection.setRequestMethod("POST");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Cache-Control", "no-cache");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
String avatarName = null;
StringBuilder query = new StringBuilder();
boolean first = true;
for (NameValuePair pair : nameValuePairs) {
if (first)
first = false;
else
query.append("&");
query.append(URLEncoder.encode(pair.getName(), "UTF-8"));
query.append("=");
query.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
if ((avatarName = pair.getName()).equals("avatar")) {
avatarPath = pair.getValue();
}
}
FileInputStream inputStream;
OutputStream outputStream = connection.getOutputStream();
DataOutputStream dataOutputStream = new DataOutputStream(outputStream);
dataOutputStream.writeBytes(query.toString());
// Write Avatar (if any)
if(avatarName != null && avatarPath != null) {
dataOutputStream.writeBytes(twoHyphens + boundary + crlf);
dataOutputStream.writeBytes("Content-Disposition: form-data; name=\"" + avatarName + "\";filename=\"" + new File(avatarPath).getName() + "\";" + crlf);
dataOutputStream.writeBytes(crlf);
/*Bitmap avatar = BitmapFactory.decodeFile(avatarPath);
avatar.compress(CompressFormat.JPEG, 75, outputStream);
outputStream.flush();*/
inputStream = new FileInputStream(avatarPath);
byte[] data = new byte[1024];
int read;
while((read = inputStream.read(data)) != -1)
dataOutputStream.write(data, 0, read);
inputStream.close();
dataOutputStream.writeBytes(crlf);
dataOutputStream.writeBytes(twoHyphens + boundary + twoHyphens + crlf);
}
dataOutputStream.flush();
dataOutputStream.close();
String responseMessage = connection.getResponseMessage();
Log.d(TAG, responseMessage);
InputStream in = connection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
StringBuilder response = new StringBuilder();
char []b = new char[512];
int read;
while((read = bufferedReader.read(b))!=-1) {
response.append(b, 0, read);
}
connection.disconnect();
Log.d(TAG, response.toString());
return response.toString();
}
}
用法很简单:把这种静态方法,并通过图片的路径,如:
Usage is quite simple: call this static method and pass the path of your image like:
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("avatar", imagePath));
最后:
MultipartServer.postData(url, nameValuePairs);
和不要忘记调用此函数在一个单独的线程,否则你会得到NetworkOnMainThreadException ..:)
and don't forget to call this function in a separate thread or you'll get NetworkOnMainThreadException.. :)
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