问题
I am working on encoding the selected image from the gallery and want to send it to the server. I succeeded to send name and description of the product which is text form. but, I don't know how to encode image and send it to string form. On the server side, I need to decode it with php. My code is...
public class AddEditWishlists extends Activity {
// Client-Server - Start //////////////////////
JSONParser jsonParser = new JSONParser();
// 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";
InputStream is;
// 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");
String encodedImage = Base64.encodeToString(image , Base64.DEFAULT);
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();
//String photo = inputphoto.getContext().toString();
encodedImage = yourSelectedImage.toString();
// Building Parameters
List<NameValuePair> params1 = new ArrayList<NameValuePair>();
params1.add(new BasicNameValuePair("name", name));
params1.add(new BasicNameValuePair("description", description));
params1.add(new BasicNameValuePair("photo", encodedImage));
Log.v("log_tag", System.currentTimeMillis()+".jpg");
// 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);
Log.v("log_tag", "In the try Loop" );
if (success == 1) {
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
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);
}
}
}
what I am working on is the part here
if (extras != null) {
id=extras.getInt("id");
inputname.setText(extras.getString("name"));
inputnote.setText(extras.getString("note"));
image = extras.getByteArray("blob");
//Here..I encoded the image ***********Is it correct?**********
String encodedImage = Base64.encodeToString(image , Base64.DEFAULT);
if (image != null) {
if (image.length > 3) {
inputphoto.setImageBitmap(BitmapFactory.decodeByteArray(image,0,image.length));
}
}
}
and...
// Client-Server - Start //////////////////////////////////////
String name = inputname.getText().toString();
String description = inputnote.getText().toString();
// this line should be modified i guess....
String encodedImage = yourSelectedImage.toString();
// Building Parameters
List<NameValuePair> params1 = new ArrayList<NameValuePair>();
params1.add(new BasicNameValuePair("name", name));
params1.add(new BasicNameValuePair("description", description));
// This line should be modified i guess..
params1.add(new BasicNameValuePair("photo", encodedImage));
Log.v("log_tag", System.currentTimeMillis()+".jpg");
// 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());
I wrote annotation where should be corrected.... I think that part makes error..
and one more question is that on the server side, how format should it be to receive the encoded photo? Varchar? char?..
Thank you in advance.
来源：https://stackoverflow.com/questions/16540238/android-encoding-image-and-sending-it-to-the-server