android - tir - El objetivo de Picasso no debe ser un error nulo

errores de formulas en excel

Question

Deseo agregar una imagen de Parse.com a ImageView en un fragmento que he creado usando Picasso. Obtengo un Target must not be null. error en logcat cada vez que trato de abrir el fragmento. Esto está ocurriendo en .into(mProfilePicture); en updateProfilePic() . ¿Puede alguien decirme por qué está pasando esto?

public class MyProfileFragment extends Fragment implements View.OnClickListener {
public static final String TAG = MyProfileFragment.class.getSimpleName();
protected Button mTakePicture;
protected Button mChoosePicture;
protected ImageView mProfilePicture;
/**
* Default constructor
*/
public MyProfileFragment() {
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// Save the user''s current state
if (mMediaUri != null) {
savedInstanceState.putString("media_uri", mMediaUri.toString());
Log.d(TAG, "onSaveInstanceState() for mMediaUri: " + mMediaUri);
}
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mMediaUri = Uri.parse(savedInstanceState.getString("media_uri"));
Log.d(TAG, "onCreate() for mMediaUri: " + mMediaUri);
}
updateProfilePic();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_my_profile, container, false);
mProfilePicture = (ImageView) rootView.findViewById(R.id.profilePicture);
mTakePicture = (Button) rootView.findViewById(R.id.takePictureButton);
mChoosePicture = (Button) rootView.findViewById(R.id.choosePictureButton);
mTakePicture.setOnClickListener(this);
mChoosePicture.setOnClickListener(this);
return rootView;
}
/**
* Called when a view has been clicked.
*
* @param v The view that was clicked.
*/
@Override
public void onClick(View v) {
// Switch statement to select which action to take depending on button/text pressed
switch (v.getId()) {
case R.id.takePictureButton:
takeCameraPicture();
break;
case R.id.choosePictureButton:
chooseGalleryPicture();
break;
default:
System.out.println("Problem with input");
}
}
public static final int TAKE_PHOTO_REQUEST = 1889;
public static final int PICK_PHOTO_REQUEST = 1888;
// member variable to store the media type as a URI, that can be stored in multiple places
// Uri = uniform resource identifier
private Uri mMediaUri;
public void takeCameraPicture() {
// Take picture
// use an existing camera app on the phone by starting an intent
// declare intent to capture a photo using whatever camera app is available
Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// after invoking the camera,
mMediaUri = getOutputMediaFileUri();
// check that a null value is not returned
if (mMediaUri == null) {
// display an error
Toast.makeText(getActivity(), R.string.error_external_storage, Toast.LENGTH_LONG).show();
} else {
// start an activity for a result so that the activity exits and returns a result back for us
// ie, the main activity will wait for the result
startActivityForResult(takePhotoIntent, TAKE_PHOTO_REQUEST);
}
}
public void chooseGalleryPicture() {
// Choose picture
Intent choosePhotoIntent = new Intent(Intent.ACTION_GET_CONTENT);
// need to specify which type of action we want to get - an image in this case
choosePhotoIntent.setType("image/*");
startActivityForResult(choosePhotoIntent, PICK_PHOTO_REQUEST);
}
private Uri getOutputMediaFileUri() {
// To be safe, you should check that the SD card / external storage is mounted
// using Environment.getExternalStorageState() before doing this.
// see method below...
if (isExternalStorageAvailable()) {
String appName = MyProfileFragment.this.getString(R.string.app_name);
// get the Uri
// Get the external storage directory - we want to return a file object
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), appName);
// Create our subdirectory
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdir()) {
Log.e(TAG, "Failed to create directory");
return null;
}
}
// Create a file to hold the image
File mediaFile;
// get the current date and time
Date now = new Date();
// convert the date and time into a String datetimestamp
// see http://developer.android.com/guide/topics/media/camera.html#saving-media for the methods used
// need to append a timestamp to make it unique - otherwise it will overwrite the previous photo
String timestamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.ENGLISH).format(now);
String path = mediaStorageDir.getPath() + File.separator;
// create a new file using the constructor that takes a name
mediaFile = new File(path + "IMG_" + timestamp + ".jpg");
Log.d(TAG, "File: " + Uri.fromFile(mediaFile));
// Return the files URI
Log.d(TAG, "Returning the files URI");
return Uri.fromFile(mediaFile);
} else {
return null;
}
}
/**
* check if external storage is available on the users device
*
* @return
*/
private boolean isExternalStorageAvailable() {
// find out what state external storage is in
String state = Environment.getExternalStorageState();
// if external storage is available, return true,
if (state.equals(Environment.MEDIA_MOUNTED)) {
return true;
} else {
return false;
}
}
private Bitmap bitmapPicture;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == PICK_PHOTO_REQUEST) {
if (data == null) {
Log.d(TAG, "Data is null");
Toast.makeText(getActivity(), getString(R.string.general_error), Toast.LENGTH_LONG).show();
} else {
// the intent has data, so set the media uri
mMediaUri = data.getData();
Log.d(TAG, "Media Uri: " + mMediaUri);
}
saveImageToParse(PICK_PHOTO_REQUEST);
updateProfilePic();
} else if (requestCode == TAKE_PHOTO_REQUEST) {
bitmapPicture = (Bitmap) data.getExtras().get("data");
Log.d(TAG, "bitmapPicture picture: " + bitmapPicture);
saveImageToParse(TAKE_PHOTO_REQUEST);
}
} else if (resultCode != Activity.RESULT_CANCELED) {
Log.d(TAG, "Problem getting the picture from gallery");
Toast.makeText(getActivity(), R.string.general_error, Toast.LENGTH_LONG).show();
}
}
public void saveImageToParse(int requestCode) {
if (requestCode == PICK_PHOTO_REQUEST) {
byte[] fileBytes = FileHelper.getByteArrayFromFile(getActivity(), mMediaUri);
fileBytes = FileHelper.reduceImageForUpload(fileBytes);
String fileName = FileHelper.getFileName(getActivity(), mMediaUri, "file");
ParseFile file = new ParseFile(fileName, fileBytes);
ParseUser.getCurrentUser().put("profilePic", file);
} else {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
bitmapPicture.compress(Bitmap.CompressFormat.PNG, 100, byteStream);
byte[] fileBytes = byteStream.toByteArray();
String fileName = FileHelper.getFileName(getActivity(), mMediaUri, "file");
ParseFile file = new ParseFile(fileName, fileBytes);
ParseUser.getCurrentUser().put("profilePic", file);
}
ParseUser.getCurrentUser().saveInBackground(new SaveCallback() {
public void done(ParseException e) {
if (e == null) {
Log.d(TAG, "Image saved successfully");
} else {
Log.d(TAG, "Image not saved");
}
}
});
}
public void updateProfilePic() {
ParseFile image = (ParseFile) ParseUser.getCurrentUser().getParseFile("profilePic");
// Email will be an empty String if the user didn''t supply an email address
if (image == null) {
// If image file is empty, set the default avatar
Log.d(TAG, "No profile picture for: " + ParseUser.getCurrentUser().getUsername());
// holder.userImageView.setImageResource(R.mipmap.avatar_empty);
} else {
Picasso.with(getActivity())
// Load the URL
.load(image.getUrl())
// if a 404 code is returned, use the placeholder image
.placeholder(R.mipmap.avatar_empty)
// Load into user image view
.into(mProfilePicture);
}
}
}

.

09-02 14:45:23.502 26690-26690/com.khackett.runmate E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.khackett.runmate, PID: 26690
java.lang.IllegalArgumentException: Target must not be null.
at com.squareup.picasso.RequestCreator.into(RequestCreator.java:618)
at com.squareup.picasso.RequestCreator.into(RequestCreator.java:601)
at com.khackett.runmate.ui.MyProfileFragment.updateProfilePic(MyProfileFragment.java:297)
at com.khackett.runmate.ui.MyProfileFragment.onCreate(MyProfileFragment.java:72)
at android.support.v4.app.Fragment.performCreate(Fragment.java:1766)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:917)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:458)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

usted llama a updateProfilePic() durante su fragmento onCreate , y luego onCreateView que está asignando el valor a mProfilePicture .

Entonces todo lo que Picasso recibió fue:

.into(null);

simplemente elimine su updateProfilePic() de onCreate y ponga después de que mProfilePicture tenga el valor correcto.