我有很多尝试在android php中上传图像，但有些响应是null问题...
图片上传android响应为空... plz提供了解决图片上传的任何想法......
php端代码完全上传图片成功，但android端不能使用此代码...
MainActivity.java
gray*** PHP代码：
upload.php的***
public class MainActivity extends Activity implements OnClickListener{
// Activity request codes
private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
private static final int SELECT_PICTURE = 1;
public static final int MEDIA_TYPE_IMAGE = 1;
JSONObject json = new JSONObject();
// directory name to store captured images and videos
private static final String IMAGE_DIRECTORY_NAME = "Hello Camera";
private Uri fileUri; // file url to store image/video
private ImageView imgPreview;
private Button btnCapturePicture, btn_upload_image;
static File mediaFile;
Bitmap rotatedBMP=null;
String selectedImagePath,
ServerUploadPath = "http://192.168.43.195/uploadservices/Images/"
+ "", str_response;
String TAG = "Final Image";
@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
setid();
setevent();
}
// // Checking camera availability
if (!isDeviceSupportCamera()) {
Toast.makeText(getApplicationContext(),
"Sorry! Your device doesn't support camera",
Toast.LENGTH_LONG).show();
// will close the app if the device does't have camera
finish();
}
}
private void setevent() {
// TODO Auto-generated method stub
btnCapturePicture.setOnClickListener(this);
btn_upload_image.setOnClickListener(this);
}
private void setid() {
// TODO Auto-generated method stub
imgPreview = (ImageView) findViewById(R.id.imageView);
btnCapturePicture = (Button) findViewById(R.id.btn_select);
btn_upload_image = (Button) findViewById(R.id.btn_upload);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btn_select:
// capture picture
CameraAndGallaryCapture();
break;
case R.id.btn_upload:
/*StaticData.staimage = rotatedBMP;
Intent catintent=new Intent(getApplicationContext(),Catagories.class);
startActivity(catintent);*/
new UploadTask().execute(rotatedBMP);
default:
break;
}
}
private void CameraAndGallaryCapture() {
final CharSequence[] options = { "Take Photo", "Choose from Gallery",
"Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Add Photo!");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo")) {
captureImage();
} else if (options[item].equals("Choose from Gallery")) {
takePhotoGallery();
} else if (options[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
private void takePhotoGallery() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),
SELECT_PICTURE);
}
/**
* Checking device has camera hardware or not
* */
private boolean isDeviceSupportCamera() {
if (getApplicationContext().getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
// this device has a camera
return true;
} else {
// no camera on this device
return false;
}
}
/*
* Capturing Camera Image will lauch camera app requrest image capture
*/
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
/*
* Creating file uri to store image/video
*/
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
/*
* returning image / video
*/
private static File getOutputMediaFile(int type) {
// External sdcard location
File mediaStorageDir = new File( Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
+ IMAGE_DIRECTORY_NAME + " directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else {
return null;
}
Log.e("path", "media file:-" + mediaFile);
return mediaFile;
}
/*
* Here we store the file url as it will be null after returning from camera
* app
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// save file url in bundle as it will be null on scren orientation
// changes
outState.putParcelable("file_uri", fileUri);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
// get the file url
fileUri = savedInstanceState.getParcelable("file_uri");
}
/**
* Receiving activity result method will be called after closing the camera
* */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
Log.d("select pah", "path" + selectedImagePath);
previewCapturedImage();
}
}
// if the result is capturing Image
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// successfully captured the image
// display it in image view
selectedImagePath = mediaFile.toString();
previewCapturedImage();
} else if (resultCode == RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed to capture image", Toast.LENGTH_SHORT)
.show();
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
/*
* Display image from a path to ImageView
*/
private void previewCapturedImage() {
try {
int targetW = 380;
int targetH = 800;
Log.d("Get w", "width" + targetW);
Log.d("Get H", "height" + targetH);
// Get the dimensions of the bitmap
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(selectedImagePath, bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
// Determine how much to scale down the image
int scaleFactor = Math.min(photoW / targetW, photoH / targetH);
// Decode the image file into a Bitmap sized to fill the View
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor << 1;
bmOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeFile(selectedImagePath,
bmOptions);
Matrix mtx = new Matrix();
try {
File imageFile = new File(selectedImagePath);
ExifInterface exif = new ExifInterface(
imageFile.getAbsolutePath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
Log.e("Orintation", " :-" + orientation);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
mtx.postRotate(270);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
imgPreview.setImageBitmap(rotatedBMP);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
mtx.postRotate(180);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
imgPreview.setImageBitmap(rotatedBMP);
break;
case ExifInterface.ORIENTATION_ROTATE_90:
mtx.postRotate(90);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
imgPreview.setImageBitmap(rotatedBMP);
break;
case ExifInterface.ORIENTATION_NORMAL:
mtx.postRotate(0);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
imgPreview.setImageBitmap(rotatedBMP);
break;
default:
mtx.postRotate(0);
rotatedBMP = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), mtx, true);
if (rotatedBMP != bitmap)
bitmap.recycle();
imgPreview.setImageBitmap(rotatedBMP);
// img_profilepic.setImageBitmap(BitmapFactory
// .decodeFile(mCurrentPhotoPath));
}
Log.i("RotateImage", "Exit orientation: " + orientation);
} catch (Exception e) {
e.printStackTrace();
}
} catch (NullPointerException e) {
e.printStackTrace();
}
}
private class UploadTask extends AsyncTask<Bitmap, Void, Void> {
private ProgressDialog Dialog = new ProgressDialog(MainActivity.this);
protected void onPreExecute() {
Dialog.setMessage("Uploading Image...");
Dialog.setCancelable(false);
Dialog.show();
}
protected Void doInBackground(Bitmap... bitmaps) {
if (bitmaps[0] == null)
return null;
setProgress(0);
Bitmap bitmap = bitmaps[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); // convert
// Bitmap
// to
// ByteArrayOutputStream
// Bitmap
// to
// ByteArrayOutputStream
InputStream in = new ByteArrayInputStream(stream.toByteArray()); // convert
// ByteArrayOutputStream
// to
// ByteArrayInputStream
DefaultHttpClient httpclient = new DefaultHttpClient();
try {
HttpPost httppost = new HttpPost(
"http://192.168.43.195/uploadservices/upload.php");
// // server
HttpClient client = new DefaultHttpClient();
HttpPost httppost1 = new HttpPost(ServerUploadPath); // server
MultipartEntity reqEntity = new MultipartEntity();
//reqEntity.addPart("email", "vishal.sojitra259@Gmail.com");
reqEntity.addPart("uploaded_file", System.currentTimeMillis()
+ ".jpg", in);
httppost1.setEntity(reqEntity);
Log.i(TAG, "request " + httppost1.getRequestLine());
HttpResponse response = null;
try {
response = httpclient.execute(httppost1);
str_response = EntityUtils.toString(response.getEntity());
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
if (response != null)
Log.d(TAG, "response "
+ response.getStatusLine().toString());
} finally {
}
} finally {
}
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
// TODO Auto-generated method stub
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
Dialog.dismiss();
Log.e("Response is", "..." + str_response);
Toast.makeText(getApplicationContext(), "Upload Complete....",
Toast.LENGTH_LONG).show();
}
}
}
答案 0 :(得分：0)
这会对你有所帮助
public class PhotoUploader extends AsyncTask<String, Void, String> {
private String photoNameInServer;
private static final int PHOTO_QUALITY = 70;
private Photo photoToBeUploaded;
@Override
protected String doInBackground(String... params) {
//Uploading Image
Bitmap bmp = BitmapFactory.decodeFile(params[0]); //ImagePath
//Hey Client, I want to post few photos, Let's bring it.
HttpClient client = new DefaultHttpClient();
HttpContext context = new BasicHttpContext();
//Passing data in POST
HttpPost post = new HttpPost("http://example.com/post.php"); //URL
//This is multipart data (file)
MultipartEntity entity = new MultipartEntity();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, PHOTO_QUALITY, bos);
byte[] data = bos.toByteArray();
entity.addPart("photo", new ByteArrayBody(data, "image/jpeg", photoNameInServer));
post.setEntity(entity);
try {
HttpResponse response = client.execute(post, context);
finalResponse = EntityUtils.toString(response.getEntity());
Log.d("X", "Final Response:" + finalResponse);
} catch (IOException e) {
e.printStackTrace();
}
}
return finalResponse;
}
@Override
protected void onPostExecute(String result) {
}
}
然后您可以通过
上传图片new PhotoUploader().execute("file-path");
并且不要忘记添加httpmime-4.1.3库。