我正在开发一个应用程序，我想从图库或相机中获取图像，然后使用multipart将其发送到服务器。我可以将图片从图库发送到服务器，但是当我尝试从相机发送图像时，它显示我失败了。
//相同的代码
//打开相机的代码
private void cameraIntent() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, REQUEST_CAMERA);
}
//活动结果
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CAMERA) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
File destination = new File(Environment.getExternalStorageDirectory(),
System.currentTimeMillis() + ".jpg");
Log.d("TAG", "onActivityResult: "+Uri.fromFile(destination));
filePath = destination.toString();
if (filePath != null) {
try {
execMultipartPost();
} catch (Exception e) {
e.printStackTrace();
}
} else {
Toast.makeText(getActivity(), "Image not capturd!", Toast.LENGTH_LONG).show();
}
}
//发送到服务器代码
private void execMultipartPost() throws Exception {
File file = new File(filePath);
String contentType = file.toURL().openConnection().getContentType();
Log.d("TAG", "file new path: " + file.getPath());
Log.d("TAG", "contentType: " + contentType);
RequestBody fileBody = RequestBody.create(MediaType.parse(contentType), file);
final String filename = "file_" + System.currentTimeMillis() / 1000L;
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("date", "21-09-2017")
.addFormDataPart("time", "11.56")
.addFormDataPart("description", "hello")
.addFormDataPart("image", filename + ".jpg", fileBody)
.build();
Log.d("TAG", "execMultipartPost: "+requestBody);
okhttp3.Request request = new okhttp3.Request.Builder()
.url("http://myexample/api/user/lets_send")
.post(requestBody)
.build();
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getActivity(), "nah", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onResponse(Call call, final okhttp3.Response response) throws IOException {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
try {
Log.d("TAG", "response of image: " + response.body().string());
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
});
}
答案 0 :(得分：3)
请通过以下代码
try {
if (imageUri != null) {
photo = BitmapFactory.decodeStream(getActivity().getContentResolver().openInputStream(imageUri));
} else {
photo = (Bitmap) data.getExtras().get("data");
}
Uri tempUri = CommonData.getImageUri(getContext(), photo);
uri = tempUri.toString();
String path = CommonData.convertImageUriToFile(tempUri, getActivity());
// new PreprocessImagesTask().execute(path);
showLoader();
new ProcessingImage(this).execute(path);
} catch (Exception e) {
e.printStackTrace();
}
public static Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
public static String convertImageUriToFile(Uri imageUri, Activity activity) {
String imgPath = "";
String Path;
try {
Cursor cursor = null;
int imageID = 0;
try {
/* ********** Which columns values want to get ****** */
String[] proj = {
MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID,
MediaStore.Images.Thumbnails._ID,
MediaStore.Images.ImageColumns.ORIENTATION
};
cursor = activity.getContentResolver().query(
imageUri, // Get data for specific image URI
proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null // Order-by clause (ascending by name)
);
int file_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
int size = cursor.getCount();
/* ****** If size is 0, there are no images on the SD Card. **** */
if (size == 0) {
// imageDetails.setText("No Image");
} else {
int thumbID = 0;
if (cursor.moveToFirst()) {
Path = cursor.getString(file_ColumnIndex);
//String orientation = cursor.getString(orientation_ColumnIndex);
String CapturedImageDetails = " CapturedImageDetails : \n\n"
+ " ImageID :" + imageID + "\n"
+ " ThumbID :" + thumbID + "\n"
+ " Path :" + Path + "\n";
showLog("CapturedImageDetails", CapturedImageDetails);
imgPath = Path;
// Show Captured Image detail on view
// imageDetails.setText(CapturedImageDetails);
}
}
} finally {
if (cursor != null) {
cursor.close();
}
}
return "" + imgPath;
} catch (IllegalArgumentException e) {
e.printStackTrace();
return "";
}
}
答案 1 :(得分：0)
试试这个，它可能会有所帮助
Intent takePhotoIntent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Date date = new Date();
String timeStamp = new SimpleDateFormat(pictureNameDateFormat, Locale.US).format(date.getTime());
File fileDirectory = new File(Environment.getExternalStorageDirectory() + "/Pictures");
if (fileDirectory.exists()) {
takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(
new File(Environment.getExternalStorageDirectory() + "/Pictures/picture_"+ timeStamp + ".png")));
takePhotoIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
takePhotoIntent.setFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
if (takePhotoIntent.resolveActivity(activity.getPackageManager()) != null) {
activity.startActivityForResult(takeVideoIntent, captureVideoActivityRequestCode);
}
}
答案 2 :(得分：0)
@angular/cli: 1.2.0
node: 8.0.0
os: linux x64
@angular/animations: 4.3.6
@angular/common: 4.3.6
@angular/compiler: 4.3.6
@angular/core: 4.3.6
@angular/forms: 4.3.6
@angular/http: 4.3.6
@angular/platform-browser: 4.3.6
@angular/platform-browser-dynamic: 4.3.6
@angular/router: 4.3.6
@angular/cli: 1.2.0
@angular/compiler-cli: 4.3.6
@angular/language-service: 4.3.6
答案 3 :(得分：0)
请使用以下代码通过相机捕捉图像和从图库中挑选图像，您也可以裁剪。
首先，请在build.gradle
compile 'com.theartofdev.edmodo:android-image-cropper:2.3.+'
在您的活动中，请添加以下代码：
uploadPic.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onSelectImageClick(view);
}
});
/**
* Start pick image activity with chooser.
*/
public void onSelectImageClick(View view) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(AccountSettingActivity.this, android.Manifest.permission.CAMERA) + ContextCompat.checkSelfPermission(AccountSettingActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(AccountSettingActivity.this, new String[]{android.Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE}, MY_REQUEST_CAMERA);
} else if (ContextCompat.checkSelfPermission(AccountSettingActivity.this, android.Manifest.permission.CAMERA) + ContextCompat.checkSelfPermission(AccountSettingActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
CropImage.startPickImageActivity(this);
}
}else {
CropImage.startPickImageActivity(this);
}
}
@Override
@SuppressLint("NewApi")
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// handle result of pick image chooser
if (requestCode == CropImage.PICK_IMAGE_CHOOSER_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
Uri imageUri = CropImage.getPickImageResultUri(this, data);
startCropImageActivity(imageUri);
}
// handle result of CropImageActivity
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
fileUri = result.getUri();
userImage.setImageURI(result.getUri());
Toast.makeText(this, "Cropping successful, Sample: " + result.getSampleSize(), Toast.LENGTH_LONG).show();
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Toast.makeText(this, "Cropping failed: " + result.getError(), Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED ) {
CropImage.startPickImageActivity(this);
} else {
Toast.makeText(this, "Cancelling, required permissions are not granted", Toast.LENGTH_LONG).show();
}
}
/**
* Start crop image activity for the given image.
*/
private void startCropImageActivity(Uri imageUri) {
CropImage.activity(imageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.setMultiTouchEnabled(true)
.start(this);
}
答案 4 :(得分：0)
试一试！
private static final int REQUEST_IMAGE = 100;
private static final String TAG = "MainActivity";
TextView imgPath;
ImageView picture;
File destination;
String imagePath;
//onCreate
private void cameraIntent() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(destination));
startActivityForResult(intent, REQUEST_IMAGE);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if( requestCode == REQUEST_IMAGE && resultCode == Activity.RESULT_OK ){
try {
FileInputStream in = new FileInputStream(destination);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 10;
imagePath = destination.getAbsolutePath();//get your path
imgPath.setText(imagePath);
Bitmap bmp = BitmapFactory.decodeStream(in, null, options);
picture.setImageBitmap(bmp);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
else{
imgPath.setText("Request cancelled");
}
}
答案 5 :(得分：0)
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
在清单中请添加这些权限并询问运行时权限，这可能会解决您的问题，您的编码是正确的，这些对我来说在添加权限后非常适合。