[英]Display taken image from camera in image view and add it to database - Android Studio
[英]Image taken from camera cannot display in image view android 5.0, but working in android 4.4
這是我的活動代碼,當單擊“捕獲圖片”按鈕時,它將從手機中加載相機。 我用相機拍照后,圖片將顯示在imageView上。 然后,我將單擊“上傳圖片圖片”按鈕以將我的圖片上傳到服務器。 在這里我遇到的問題是,該代碼在所有android version 4.4
和更低android version 4.4
上都運行良好,當我在android 5.0
測試此代碼時,從相機拍攝的圖片未顯示在imageView上。 我嘗試了許多解決方案,但一直失敗。 誰能幫我這個? 謝謝。
活動代碼
public class TestUpload extends Activity implements OnItemSelectedListener {
private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
public static final int MEDIA_TYPE_IMAGE = 1;
private static final String IMAGE_DIRECTORY_NAME = "Hello camera";
private Uri fileUri;
private ImageView imgPreview;
private Button btnCapturePicture, btnUploadImage;
private EditText itemname;
private EditText description;
private EditText price;
private EditText contact;
private String randNum, uname;
Random random = new Random();
private static final String _CHAR = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
private static final int RANDOM_STR_LENGTH = 12;
private Spinner spinCat, spinLoc;
private String [] Category = {"IT Gadgets","Men Fashion","Women Fashion","Beauty","Sports","Cars and Motors","Furnitures","Music Instrument","Books","Property","Photography","Games and Toys","kids and Baby","Others"};
private String [] Location = {"Kuala Lumpur","Melacca","Johor","Selangor","Kelantan","Kedah","Negeri Sembilan",
"Pahang","Perak","Perlis","Penang","Sabah","Sarawak","Terengganu"};
private static final String TAG_SUCCESS = "success";
JSONParser2 jsonParser2 = new JSONParser2();
private static String url_create_image = "http://gemini888.tk/GP_trade_api_v2/image_connect/create_product.php";
private SweetAlertDialog pDialog;
long totalSize = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload_test);
ActionBar ab = getActionBar();
ab.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#96ead7")));
ab.setDisplayHomeAsUpEnabled(true);
imgPreview = (ImageView) findViewById(R.id.imgPreview);
btnCapturePicture = (Button) findViewById(R.id.btn_camera);
btnUploadImage = (Button) findViewById(R.id.btn_upload);
itemname = (EditText) findViewById(R.id.input_upload_item_name);
description = (EditText) findViewById(R.id.input_item_desc);
price = (EditText) findViewById(R.id.upload_input_item_price);
contact = (EditText) findViewById(R.id.input_contact);
spinCat = (Spinner) findViewById(R.id.spin_category);
spinLoc = (Spinner) findViewById(R.id.spin_location);
ArrayAdapter<String> adapter_Category = new ArrayAdapter<String>
(this, android.R.layout.simple_spinner_item, Category);
ArrayAdapter<String> adapter_Location = new ArrayAdapter<String>
(this, android.R.layout.simple_spinner_item, Location);
adapter_Category.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
adapter_Location.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinCat.setAdapter(adapter_Category);
spinLoc.setAdapter(adapter_Location);
spinCat.setOnItemSelectedListener(this);
spinLoc.setOnItemSelectedListener(this);
DatabaseHandler db = new DatabaseHandler(getApplicationContext());
HashMap<String, String> user = new HashMap<String, String>();
user = db.getUserDetails();
uname = user.get("uname");
//timeStamp = new SimpleDateFormat ("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
randNum = getRandomString();
//capture image button click event
btnCapturePicture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//capture image
captureImage();
}
});
btnUploadImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//uploading the file to server
new UploadFileToServer().execute();
}
});
}
//capturing Camera image will lunch camera app request 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 image capture intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
//Receiving activity result method will be called after closing the camera
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//if the result i capture image
if(requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if(resultCode == RESULT_OK) {
//success capture image, display it on imageview
previewCapturedImage();
} else if (resultCode == RESULT_CANCELED) {
//user cancel 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();
}
}
}
//Display image from a path to imageview
private void previewCapturedImage() {
imgPreview.setVisibility(View.VISIBLE);
//bitmap factory
BitmapFactory.Options options = new BitmapFactory.Options();
//downsize image as it throws Outofmemory execption for larger images
options.inSampleSize = 8;
final Bitmap bitmap = BitmapFactory.decodeFile(fileUri.getPath(), options);
imgPreview.setImageBitmap(bitmap);
}
//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 screen orientation change
outState.putParcelable("file_uri", fileUri);
}
//restore the fileUri again
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
//get the Urifile
fileUri = savedInstanceState.getParcelable("file_uri");
}
//create file Uri to store image
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
//returning image
private File getOutputMediaFile(int type) {
//External sdcard location
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), UserFunctions.IMAGE_DIRECTORY_NAME);
//create the storage directory if it does not exist
if(!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Failed create" + UserFunctions.IMAGE_DIRECTORY_NAME + "directory");
return null;
}
}
//Create a media file name
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator + uname + randNum + ".jpg");
} else {
return null;
}
return mediaFile;
}
//upload image to server
private class UploadFileToServer extends AsyncTask<Void, Integer, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new SweetAlertDialog(TestUpload.this, SweetAlertDialog.PROGRESS_TYPE);
pDialog.getProgressHelper().setBarColor(Color.parseColor("#A5DC86"));
pDialog.setTitleText("Picture uploading, please wait..");
//pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(Void...params) {
String iname = itemname.getText().toString();
String des = description.getText().toString();
String iprice = price.getText().toString();
String icontact = contact.getText().toString();
String cat = spinCat.getSelectedItem().toString();
String loc = spinLoc.getSelectedItem().toString();
List<NameValuePair> param = new ArrayList<NameValuePair>();
param.add(new BasicNameValuePair("name", iname));
param.add(new BasicNameValuePair("description", des));
param.add(new BasicNameValuePair("price", iprice));
param.add(new BasicNameValuePair("username", uname));
param.add(new BasicNameValuePair("category", cat));
param.add(new BasicNameValuePair("location", loc));
param.add(new BasicNameValuePair("timestamp", randNum));
param.add(new BasicNameValuePair("contact", icontact));
JSONObject json = jsonParser2.makeHttpRequest(url_create_image,
"POST", param);
Log.d("Create Response", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Log.d("Create Response", "success");
} else {
// failed to create product
Toast.makeText(getApplicationContext(),"failed",Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
return uploadFile();
}
@Override
protected void onPostExecute(String result) {
pDialog.dismiss();
super.onPostExecute(result);
}
}
@SuppressWarnings("deprecation")
private String uploadFile() {
String responseString = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(UserFunctions.FILE_UPLOAD_URL);
try {
AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
new ProgressListener() {
@Override
public void transferred(long num) {
setProgress((int) ((num / (float) totalSize) * 100));
}
});
File sourceFile = new File(fileUri.getPath());
// Adding file data to http body
entity.addPart("image", new FileBody(sourceFile));
// Extra parameters if you want to pass to server
entity.addPart("website",
new StringBody("http://gemini888.tk"));
entity.addPart("email", new StringBody("thegemini888@gmail.com"));
totalSize = entity.getContentLength();
httppost.setEntity(entity);
// Making server call
HttpResponse response = httpclient.execute(httppost);
HttpEntity r_entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(r_entity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (ClientProtocolException e) {
responseString = e.toString();
} catch (IOException e) {
responseString = e.toString();
}
return responseString;
}
public String getRandomString() {
StringBuffer randStr = new StringBuffer();
for (int i =0; i<RANDOM_STR_LENGTH; i++) {
int number = getRandomNumber();
char ch = _CHAR.charAt(number);
randStr.append(ch);
}
return randStr.toString();
}
private int getRandomNumber() {
int randomInt = 0;
randomInt = random.nextInt(_CHAR.length());
if (randomInt - 1 == -1) {
return randomInt;
} else {
return randomInt - 1;
}
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
spinCat.setSelection(position);
String CatList = (String) spinCat.getSelectedItem();
CatList.toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// app icon in action bar clicked; go home
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
在captureImage()方法中嘗試此操作。
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
//Start image capture intent
}
//first of all create a directory to store your captured Images
String root = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString();
File myDir = new File(root + "/PGallery");
if (!myDir.exists()) {
myDir.mkdirs();
}
//Give name to your captured Image
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmmss",java.util.Locale.getDefault());
Date date = new Date();
String sDate = formatter.format(date);
imageName = "PRAVA"+sDate+".jpg";
try {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
filePath = new File(myDir,imageName);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(filePath));
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
}
catch (ActivityNotFoundException e) {
String errorMessage = "Whoops - your device doesn't support capturing images!";
Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
}
關於活動結果:
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
try {
ImagePath = filePath.getAbsolutePath();
} catch (Exception e) {
e.printStackTrace();
}
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
Bitmap bitmap = BitmapFactory.decodeFile(ImagePath, bitmapOptions);
ImageView mImageView = (ImageView) findViewById(R.id.ivCamreaPic);
mImageView.setImageBitmap(bitmap);
}
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