I followed the Kii Cloud tutorial on creating and archieving an object, and tried to implement it to my own app. What it basically does is, when user clicks on the "existingButton", it opens a new activity where user can pick an image from the gallery and upload it. I'm facing no issues on the second activity, yet the uri from the first activity comes as "null" to the second activity and I'm getting a NullPointerException eventually, since I'm trying to parse a null String. I examined this issue through debugger and found out that the problem is in the first activity's "onSaveCompleted" method. The if (exception == null) condition is not met, which basically means that I'm getting some kind of an exception, I guess. Then, if (exception instanceof CloudExecutionException) condition is not met, too. As a result, it shows the Toast of the else condition of my main if. Code is below. Thanks for any help guys.
First Activity:
public class SendNotePreActivity extends AppCompatActivity {
public static final String APP_BUCKET_NAME = "tutorial";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send_note_pre);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Button existingButton = (Button) findViewById(R.id.existingButton);
existingButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
KiiBucket bucket = Kii.bucket(APP_BUCKET_NAME);
KiiObject object = bucket.object();
object.set("deneme", 313131);
object.save(new KiiObjectCallBack() {
@Override
public void onSaveCompleted(int token, @NonNull KiiObject object,
Exception exception) {
if (exception == null) {
final String uri = object.toUri().toString();
SharedPreferences.Editor mEditor = getSharedPreferences("args", MODE_PRIVATE).edit();
mEditor.putString("uri", uri);
mEditor.apply();
Toast.makeText(SendNotePreActivity.this, "SUCCESSFUL", Toast.LENGTH_LONG).show();
} else {
if (exception instanceof CloudExecutionException) {
Toast.makeText(SendNotePreActivity.this, "Please choose an image", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(SendNotePreActivity.this, "Please choose an image222", Toast.LENGTH_LONG).show();
}
}
}
});
Intent intent = new Intent(SendNotePreActivity.this, SendNoteActivity.class);
startActivity(intent);
}
});
}
}
Second Activity:
public class SendNoteActivity extends AppCompatActivity {
ImageView imagePreview;
private static final int PICK_IMAGE = 1;
String filePath = null;
String objectUri = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send_note);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
imagePreview = (ImageView) findViewById(R.id.imagePreview);
Button chooseButton = (Button) findViewById(R.id.chooseButton);
chooseButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Note"), PICK_IMAGE);
}
});
Button sendButton = (Button) findViewById(R.id.sendButton);
sendButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (filePath == null) {
Toast.makeText(SendNoteActivity.this, "Please choose an image", Toast.LENGTH_LONG).show();
} else {
uploadFile(filePath);
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == PICK_IMAGE && resultCode == Activity.RESULT_OK && data != null) {
Uri selectedFileUri = data.getData();
imagePreview.setImageURI(selectedFileUri);
filePath = getFilePathByUri(selectedFileUri);
if (filePath == null) {
Toast.makeText(SendNoteActivity.this, "File does not exist", Toast.LENGTH_LONG).show();
return;
}
} else {
super.onActivityResult(requestCode, resultCode, data);
Toast.makeText(SendNoteActivity.this, "Picking failed", Toast.LENGTH_SHORT).show();
}
}
private String getFilePathByUri(Uri selectedFileUri) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
// Workaround of retrieving file image through ContentResolver
// for Android4.2 or later
String filePath = null;
FileOutputStream fos = null;
try {
Bitmap bmp = MediaStore.Images.Media.getBitmap(
SendNoteActivity.this.getContentResolver(), selectedFileUri);
String cacheDir = Environment.getExternalStorageDirectory()
.getAbsolutePath() + File.separator + "tutorialapp";
File createDir = new File(cacheDir);
if (!createDir.exists()) {
createDir.mkdir();
}
filePath = cacheDir + File.separator + "upload.jpg";
File file = new File(filePath);
fos = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.JPEG, 95, fos);
fos.flush();
fos.getFD().sync();
} catch (Exception e) {
filePath = null;
} finally {
if (fos != null) {
try {
fos.close();
} catch (Exception e) {
// Nothing to do
}
}
}
return filePath;
} else {
String[] filePathColumn = { MediaStore.MediaColumns.DATA };
Cursor cursor = SendNoteActivity.this.getContentResolver().query(
selectedFileUri, filePathColumn, null, null, null);
if (cursor == null)
return null;
try {
if (!cursor.moveToFirst())
return null;
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
if (columnIndex < 0) {
return null;
}
String picturePath = cursor.getString(columnIndex);
return picturePath;
} finally {
cursor.close();
}
}
}
private void uploadFile(String path) {
SharedPreferences prefs = getSharedPreferences("args", MODE_PRIVATE);
objectUri = prefs.getString("uri", "OLMADI AQ");
KiiObject object = KiiObject.createByUri(Uri.parse(objectUri));
File f = new File(path);
KiiUploader uploader = object.uploader(SendNoteActivity.this, f);
uploader.transferAsync(new KiiRTransferCallback() {
@Override
public void onStart(KiiRTransfer operator) {
}
@Override
public void onTransferCompleted(KiiRTransfer operator, Exception e) {
if (e == null) {
Toast.makeText(SendNoteActivity.this, "Successful", Toast.LENGTH_LONG).show();
} else {
Throwable cause = e.getCause();
if (cause instanceof CloudExecutionException)
Toast.makeText(SendNoteActivity.this, "Error", Toast.LENGTH_LONG).show();
else
Toast.makeText(SendNoteActivity.this, "Error2", Toast.LENGTH_LONG).show();
}
}
});
}
}
log:
FATAL EXCEPTION: main
Process: com.theoc.proto, PID: 8050
java.lang.NullPointerException: uriString
at android.net.Uri$StringUri.<init>(Uri.java:470)
at android.net.Uri$StringUri.<init>(Uri.java:460)
at android.net.Uri.parse(Uri.java:432)
at com.theoc.proto.SendNoteActivity.uploadFile(SendNoteActivity.java:163)
at com.theoc.proto.SendNoteActivity.access$000(SendNoteActivity.java:44)
at com.theoc.proto.SendNoteActivity$2.onClick(SendNoteActivity.java:82)
at android.view.View.performClick(View.java:4763)
at android.view.View$PerformClick.run(View.java:19821)
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:5272)
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:909)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)
