用户保存三个数据： 名称，注意和图像。正如您可以看到下面的代码， 我成功编写代码将名称和注释发送到服务器端。 但是，我不知道如何将选定的图像文件从设备发送到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);
}
}
}
}
如何在客户端 - 服务器注释之间进行编码以发送图像文件？..
答案 0 :(得分：5)
您可以将所选图像转换为base 64字符串，然后将该字符串传递给服务器，然后在服务器中解码，
检查此代码以将图像转换为base64，如果您有imageView，则可以编写此代码，
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);
就像你的代码一样，你在这行中有字节数组，
image = extras.getByteArray("blob");
所以你可以在那之后直接编写这行代码，
String encodedImage = Base64.encodeToString(image , Base64.DEFAULT);
答案 1 :(得分：2)
我使用以下代码将图像上传到php服务器。注意uploadFile函数你只需要从sdcard传递你的图像路径。
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);
}
}
并在php中
$target_path1 = "upload/";
$target_path1 = $target_path1 . basename( $_FILES['uploaded_file']['name']);
move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $target_path1)
希望有所帮助
答案 2 :(得分：0)
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
}
}
答案 3 :(得分：0)
# 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;
}