Mixing
java.lang.String java.io.File.getName() null object reference in android
0
I have used bellow code for getting file name. android 7, API 25 working, android 6.0, API 23 is not working. Here is my code
File sampleDir = new File(Environment.getExternalStorageDirectory(), "/myfolder");
File audiofile = File.createTempFile(file_name, audioFileExtention, sampleDir);
audiofile.getName()
But when i run it shows bellow error
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.io.File.getName()' on a null object reference
But it is working fine in some devices.I have used bellow code for gadle
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 26
}
}
I don't know why it shows error. Please help me
android asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
|
show 2 more comments
0
I have used bellow code for getting file name. android 7, API 25 working, android 6.0, API 23 is not working. Here is my code
File sampleDir = new File(Environment.getExternalStorageDirectory(), "/myfolder");
File audiofile = File.createTempFile(file_name, audioFileExtention, sampleDir);
audiofile.getName()
But when i run it shows bellow error
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.io.File.getName()' on a null object reference
But it is working fine in some devices.I have used bellow code for gadle
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 26
}
}
I don't know why it shows error. Please help me
android asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
Did you implementedRuntime PermissionforWRITE_EXTERNAL_STORAGE.
– Ajay - Rlogical
Jan 2 at 14:41
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02
|
show 2 more comments
0
0
0
I have used bellow code for getting file name. android 7, API 25 working, android 6.0, API 23 is not working. Here is my code
File sampleDir = new File(Environment.getExternalStorageDirectory(), "/myfolder");
File audiofile = File.createTempFile(file_name, audioFileExtention, sampleDir);
audiofile.getName()
But when i run it shows bellow error
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.io.File.getName()' on a null object reference
But it is working fine in some devices.I have used bellow code for gadle
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 26
}
}
I don't know why it shows error. Please help me
android asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
I have used bellow code for getting file name. android 7, API 25 working, android 6.0, API 23 is not working. Here is my code
File sampleDir = new File(Environment.getExternalStorageDirectory(), "/myfolder");
File audiofile = File.createTempFile(file_name, audioFileExtention, sampleDir);
audiofile.getName()
But when i run it shows bellow error
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.io.File.getName()' on a null object reference
But it is working fine in some devices.I have used bellow code for gadle
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 26
}
}
I don't know why it shows error. Please help me
android android asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
edited Jan 2 at 15:02
Enamul Haque
asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
asked Jan 2 at 14:36
Enamul HaqueEnamul Haque
390212
390212
Did you implementedRuntime PermissionforWRITE_EXTERNAL_STORAGE.
– Ajay - Rlogical
Jan 2 at 14:41
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02
|
show 2 more comments
Did you implementedRuntime PermissionforWRITE_EXTERNAL_STORAGE.
– Ajay - Rlogical
Jan 2 at 14:41
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02
Did you implemented
Runtime Permission for WRITE_EXTERNAL_STORAGE.– Ajay - Rlogical
Jan 2 at 14:41
Did you implemented
Runtime Permission for WRITE_EXTERNAL_STORAGE.– Ajay - Rlogical
Jan 2 at 14:41
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02
|
show 2 more comments
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Did you implemented
Runtime PermissionforWRITE_EXTERNAL_STORAGE.– Ajay - Rlogical
Jan 2 at 14:41
@AjayMehta-Rlogical yes sir
– Enamul Haque
Jan 2 at 14:42
Can you post the file_name and audioFileExtension?
– kAliert
Jan 2 at 14:54
@kAliert audioFileExtention = ".mp3"; android 7 api label 25 working, android 6 api 23 is not working
– Enamul Haque
Jan 2 at 14:57
see this answer stackoverflow.com/a/53996279/10738439
– Amrdroid
Jan 2 at 15:02