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我很難找出如何傳遞圖像的uri，因爲我需要它來抓取文件，除非有另一種方式，我只是沒有看到它（我對此很新）。我選擇了圖像工作，並將imageview的位圖設置爲位圖，但現在嘗試在點擊提交按鈕後將其發送到服務器。如何將android image的uri傳遞給異步任務的執行調用？
我知道我可以執行（uri）;但是我怎麼才能從imageview中取出uri呢？
下面是代碼：）
public class wardrobe extends Activity implements OnClickListener {
// set variable for the fields
private EditText nameField, sizeField, colorField, quantityField;
private Spinner typeField, seasonField;
private ImageView imageview;
private ProgressBar progressBarField;
private TextView imageTextSelect, resImage;
private ProgressDialog progressDialog = null;
private int serverResponseCode = 0;
private Button uploadImageButton, postWardrobe;
private String upLoadServerUri = null;
private String imagepath = null;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.wardrobe);
// image upload stuff
imageview = (ImageView) findViewById(R.id.user_photo);
imageTextSelect = (TextView) findViewById(R.id.imageTextSelect);
// button for upload image
uploadImageButton = (Button) findViewById(R.id.uploadImageButton);
// button for posting details
postWardrobe = (Button) findViewById(R.id.postButton);
uploadImageButton.setOnClickListener(this);
postWardrobe.setOnClickListener(this);
@Override
public void onClick(View v) {
/**
* Opens dialog picker, so the user can select image from the gallery.
* The result is returned in the method <code>onActivityResult()</code>
*/
if (v == uploadImageButton) {
// below allows you to open the phones gallery
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);
}
if (v == postWardrobe) {
// execute the post request
new ImageUploadTask().execute();
}
}
}
/**
* Retrives the result returned from selecting image, by invoking the method
* <code>selectImageFromGallery()</code>
*/
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK && requestCode == 1 && null != data) {
decodeUri(data.getData());
}
}
public void decodeUri(Uri uri) {
ParcelFileDescriptor parcelFD = null;
try {
parcelFD = getContentResolver().openFileDescriptor(uri, "r");
FileDescriptor imageSource = parcelFD.getFileDescriptor();
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeFileDescriptor(imageSource, null, o);
// the new size we want to scale to
final int REQUIRED_SIZE = 1024;
// Find the correct scale value. It should be the power of 2.
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while (true) {
if (width_tmp < REQUIRED_SIZE && height_tmp < REQUIRED_SIZE) {
break;
}
width_tmp /= 2;
height_tmp /= 2;
scale *= 2;
}
// decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
bitmap = BitmapFactory.decodeFileDescriptor(imageSource, null, o2);
imageview.setImageBitmap(bitmap);
// can take off below just shows path
imageTextSelect.setText("select : " + uri);
} catch (FileNotFoundException e) {
// handle errors
} catch (IOException e) {
// handle errors
} finally {
if (parcelFD != null)
try {
parcelFD.close();
} catch (IOException e) {
// ignored
}
}
}
PART我試圖獲取工作：）
private class ImageUploadTask extends AsyncTask<Void, Void, String> {
What I need is the uri or the file...
String fileName = imagepath;
File sourceFile = new File(imagepath);
private String webAddressToPost = "http://10.0.2.2/wardrobe";
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
// private ProgressDialog dialog
private ProgressDialog progressDialog = new ProgressDialog(
wardrobe.this);
@Override
protected void onPreExecute() {
progressDialog.setMessage("Uploading...");
progressDialog.show();
}
@Override
protected String doInBackground(Void... arg0) {
if (!sourceFile.isFile()) {
progressDialog.dismiss();
Log.e("uploadFile", "Source File not exist :" + imagepath);
runOnUiThread(new Runnable() {
public void run() {
imageTextSelect.setText("Source File not exist :"
+ imagepath);
}
});
return 0;
} else {
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(
sourceFile);
URL url = new URL(upLoadServerUri);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+ " F:/wamp/wamp/www/uploads";
imageTextSelect.setText(msg);
Toast.makeText(wardrobe.this,
"File Upload Complete.", Toast.LENGTH_SHORT)
.show();
}
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
progressDialog.dismiss();
ex.printStackTrace();
imageTextSelect
.setText("MalformedURLException Exception : check script url.");
Toast.makeText(wardrobe.this, "MalformedURLException",
Toast.LENGTH_SHORT).show();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
progressDialog.dismiss();
e.printStackTrace();
imageTextSelect.setText("Got Exception : see logcat ");
Toast.makeText(wardrobe.this,
"Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
}
你可以用它代替HTTP發佈FTP。獲取您的位圖像這樣...位圖位圖=（（BitmapDrawable）image.getDrawable（））。getBitmap（）; – elbuild
我寧願使用http，我知道他們之間有很多爭論，但我並沒有試圖進入這個複雜的理由，謝謝，但是，我覺得這個問題必須有一個簡單的答案......人們如何做它大聲笑 – Lion789