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问题:
Users save three data:
name, note and image. As you can see the code below,
I succeeded to code to send the name and note to the server side.
But, I have no idea how to send a selected image file from the device to the serverDB.
public class AddEditWishlists extends Activity {
// Client-Server - Start //////////////////////
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText inputName;
EditText inputDesc;
// url to create new product
private static String url_create_product =
"http://10.56.43.91/android_connect/create_product.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
// Client-Server - End //////////////////////
//Define Variables
private EditText inputname;
private EditText inputnote;
private Button upload;
private Bitmap yourSelectedImage;
private ImageView inputphoto;
private Button save;
private int id;
private byte[] blob=null;
byte[] image=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_wishlist);
setUpViews();
}
private void setUpViews() {
inputname = (EditText) findViewById(R.id.inputname);
inputnote = (EditText) findViewById(R.id.inputnote);
inputphoto = (ImageView) findViewById(R.id.inputphoto);
Bundle extras = getIntent().getExtras();
if (extras != null) {
id=extras.getInt("id");
inputname.setText(extras.getString("name"));
inputnote.setText(extras.getString("note"));
image = extras.getByteArray("blob");
if (image != null) {
if (image.length > 3) {
inputphoto.setImageBitmap(BitmapFactory.decodeByteArray(image,0,image.length));
}
}
}
//Image Upload Button
upload = (Button) findViewById(R.id.upload);
upload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, 0);
}
});
// Save the data
save = (Button) findViewById(R.id.save);
// Save하면 발생되는 이벤트
save.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (inputname.getText().length() != 0) {
AsyncTask<Object, Object, Object> saveContactTask = new AsyncTask<Object, Object, Object>() {
@Override
protected Object doInBackground(Object... params) {
saveContact();
// Client-Server - Start //////////////////////////////////////
String name = inputname.getText().toString();
String description = inputnote.getText().toString();
// Building Parameters
List<NameValuePair> params1 = new ArrayList<NameValuePair>();
params1.add(new BasicNameValuePair("name", name));
params1.add(new BasicNameValuePair("description", description));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product, "POST", params1);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
// Client-Server - End ////////////////////////////////////
return null;
}
@Override
protected void onPostExecute(Object result) {
finish();
}
};
saveContactTask.execute((Object[]) null);
} else {
AlertDialog.Builder alert = new AlertDialog.Builder(
AddEditWishlists.this);
alert.setTitle("Error In Save Wish List");
alert.setMessage("You need to Enter Name of the Product");
alert.setPositiveButton("OK", null);
alert.show();
}
}
});
}
// If users save data, this will act (data -> db)
private void saveContact() {
if(yourSelectedImage!=null){
ByteArrayOutputStream outStr = new ByteArrayOutputStream();
yourSelectedImage.compress(CompressFormat.JPEG, 100, outStr);
blob = outStr.toByteArray();
}
else{blob=image;}
// Change Text type to string type to save in the DB
SQLiteConnector sqlCon = new SQLiteConnector(this);
if (getIntent().getExtras() == null) {
sqlCon.insertWishlist(inputname.getText().toString(), inputnote.getText().toString(), blob);
}
else {
sqlCon.updateWishlist(id, inputname.getText().toString(), inputnote.getText().toString(),blob);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode,Intent resultdata) {
super.onActivityResult(requestCode, resultCode, resultdata);
switch (requestCode) {
case 0:
if (resultCode == RESULT_OK) {
Uri selectedImage = resultdata.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
// Convert file path into bitmap image using below line.
yourSelectedImage = BitmapFactory.decodeFile(filePath);
inputphoto.setImageBitmap(yourSelectedImage);
}
}
}
}
How can I code between the client-server annotation to send the image file?..
回答1:
You can convert the selected image to base 64 string and then pass that string to the server and then in the server decode that,
Check this code to convert image to base64,If you have the imageView then you can write this code,
imageView.buildDrawingCache();
Bitmap bm = imageView.getDrawingCache();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
String encodedImage = Base64.encodeToString(b , Base64.DEFAULT);
EDIT
as in your code,you have the byte array in this line,
image = extras.getByteArray("blob");
so you can directly write this line of code after that,
String encodedImage = Base64.encodeToString(image , Base64.DEFAULT);
回答2:
I use the following code to upload image to php server. Notice uploadFile function you just have to pass your path of image from sdcard.
public class PhotosActivity extends Activity {
ImageView img, img1;
int column_index;
Intent intent = null;
Bitmap bitmap = null;
FileInputStream in1, in2, in3;
BufferedInputStream buf;
// Declare our Views, so we can access them later
String logo, imagePath, Logo;
Cursor cursor;
private String Tag = "UPLOADER";
private String urlString = "YOUR_ONLINE_PHP";
HttpURLConnection conn;
// YOU CAN EDIT THIS TO WHATEVER YOU WANT
private static final int SELECT_PICTURE = 1;
String selectedImagePath;
// ADDED
String filemanagerstring;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.photos1_layout);
// ListView iv= (ListView)findViewById(R.id.listView1);
// iv.setAdapter(new ArrayAdapter(this,
// android.R.layout.simple_list_item_1, values));
// iv.setAdapter(new
// ArrayAdapter(this,android.R.layout.simple_list_item_1, values));
img = (ImageView) findViewById(R.id.imageView1);
}
public void onClick(View v) {
// select a file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),
SELECT_PICTURE);
}
String path = "";
// UPDATED
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
// OI FILE Manager
filemanagerstring = selectedImageUri.getPath();
// MEDIA GALLERY
selectedImagePath = getPath(selectedImageUri);
img.setImageURI(selectedImageUri);
imagePath.getBytes();
path = imagePath.toString();
// TextView txt = (TextView)findViewById(R.id.title);
// txt.setText(imagePath.toString());
Bitmap bm = BitmapFactory.decodeFile(imagePath);
uploadFile(imagePath.toString());
}
}
}
public int uploadFile(String sourceFileUri) {
String upLoadServerUri = "http://"+common.ipaddress+"/database/upload.php";
String fileName = sourceFileUri;
int serverResponseCode = 0;
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;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File Does not exist");
return 0;
}
try { // open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a HTTP
// connection to
// the URL
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);
bytesAvailable = fileInputStream.available(); // create a buffer of
// maximum size
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) {
runOnUiThread(new Runnable() {
public void run() {
// tv.setText("File Upload Completed.");
Toast.makeText(PhotosActivity.this,
"File Upload Complete.", Toast.LENGTH_SHORT)
.show();
}
});
}
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
Toast.makeText(PhotosActivity.this, "MalformedURLException",
Toast.LENGTH_SHORT).show();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(PhotosActivity.this,
"Exception : " + e.getMessage(), Toast.LENGTH_SHORT).show();
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
return serverResponseCode;
}
// UPDATED!
public String getPath(Uri uri) {
String[] projection = { MediaColumns.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
cursor.moveToFirst();
imagePath = cursor.getString(column_index);
return cursor.getString(column_index);
}
}
and in php
$target_path1 = "upload/";
$target_path1 = $target_path1 . basename( $_FILES['uploaded_file']['name']);
move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $target_path1)
Hope that helps
回答3:
# handling in Asp.Net MVC #
public string Post( string PostText, byte[] image)
{
PostCS PostCs = new PostCS();
ImageResize obj = new ImageResize();
string FileName = DateTime.Now.ToFileTime().ToString().Trim();
string imgName;
if (image != null)
{
ImageFormat png = ImageFormat.Png;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(image))
{
System.Drawing.Image bp = System.Drawing.Image.FromStream(ms, true);
//Bitmap bp = new Bitmap(Image.FromStream(ms));
imgName = FileName + "_" + bp.Width + "X" + bp.Height + ".png";
bp.Save(Server.MapPath(ConfigurationManager.AppSettings["WallPostImages"].ToString()) + imgName, png);
PostCs.ImageName = imgName;
PostCs.InsertPostImg(PostCs);
}
var resizemaster = from a in LQdb.Z_ImageSetups select a;
int wallwidth = 640;
int wallheight = 480;
string orginalfilename = Server.MapPath(ConfigurationManager.AppSettings["WallPostImages"].ToString()) + imgName;
obj.ImageStream(FileName, ConfigurationManager.AppSettings["WallPostImages"].ToString(), wallwidth, wallheight, orginalfilename, out imgName);
PostCs.ImageName = imgName;
PostCs.ImageType = "Wall";
PostCs.InsertPostImg(PostCs);
}
return PostText;
}
回答4:
public class AddPost extends ActionBarActivity {
protected ImageButton imgButton;// To refer image button
protected ImageView image;
// To refer image view
protected ImageButton ImageFromCard;
private static int RESULT_LOAD_IMAGE = 2;
private ProgressDialog PDialog;
Button btnLogout;
@SuppressWarnings("unused")
private boolean imgCapFlag = false;
protected boolean taken;
protected static final String PHOTO_TAKEN = "photo_taken";
protected String path;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_post);
image = (ImageView) findViewById(R.id.image);
imgButton = (ImageButton) findViewById(R.id.imageButton1);
imgButton.setOnClickListener(new ButtonClickHandler());
ImageFromCard = (ImageButton) findViewById(R.id.imageButton2);
path = Environment.getExternalStorageDirectory()
+ "/images/make_machine_example.jpg";
// ---------------------MEMORY CARD OPEN----------------------------
ImageFromCard.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
// ------------------URL FOR CATEGORIES--------------------
}
public void seepost(View view) {
Intent i = new Intent(view.getContext(), MainActivity.class);
startActivity(i);
}
// ---------Handling Image Result---------------------
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
BitmapFactory.Options options = new BitmapFactory.Options();
bitmap = BitmapFactory.decodeFile(picturePath);
// Set ImageView with the bitmap read in the prev line
image.setImageBitmap(bitmap);
} else {
// Log message
Log.i("SonaSys", "resultCode: " + resultCode);
switch (resultCode) {
// When user doesn't capture image, resultcode returns 0
case 0:
Log.i("SonaSys", "User cancelled");
break;
// When user captures image, onPhotoTaken an user-defined method to
// assign the capture image to ImageView
case -1:
onPhotoTaken();
break;
}
}
}
// ----------------------------------------------------
public class ButtonClickHandler implements View.OnClickListener {
public void onClick(View view) {
// Below log message will be logged when you click Take photo button
Log.i("SonaSys", "ButtonClickHandler.onClick()");
// Call startCameraActivity, an user defined method, going to be
// created
startCameraActivity();
}
}
protected void startCameraActivity() {
// Log message
Log.i("SonaSys", "startCameraActivity()");
// Create new file with name mentioned in the path variable
File file = new File(path);
Uri outputFileUri = Uri.fromFile(file);
Intent intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(intent, 0);
}
protected void onPhotoTaken() {
// Log message
Log.i("SonaSys", "onPhotoTaken");
// Flag used by Activity life cycle methods
taken = true;
// Flag used to check whether image captured or not
imgCapFlag = true;
// BitmapFactory- Create an object
BitmapFactory.Options options = new BitmapFactory.Options();
// Set image size
options.inSampleSize = 4;
// Read bitmap from the path where captured image is stored
bitmap = BitmapFactory.decodeFile(path, options);
// Set ImageView with the bitmap read in the prev line
image.setImageBitmap(bitmap);
}
// ----------------Image Upload ------------------------------
public void postData(View view) {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://sitename.net/controllername/post");
try {
if (bitmap != null) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.JPEG, 100, bos);
byte[] data = bos.toByteArray();
String file = Base64.encodeBytes(data);
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
7);
nameValuePairs.add(new BasicNameValuePair("image", file));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
httpclient.execute(httppost);
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
