How to add setter and getter to member variables of a Parcelable class
0
Below is a class that I'm currently working on
@Parcelize
class Time(var hour:Int, var minute:Int):Comparable<Time>,Parcelable
I want to add a setter to member variables hour and minute so that they would stay in time format. And the class has to be passed through intent, so it implements Parcelable. But it says that a Parcelable class should have a primary constructor so I'm having problem with adding setters.
Can anyone please tell me why and a solution? Thank you.
android kotlin asked Nov 27 '18 at 12:29
BullGomBullGom
11812
add a comment |
0
Below is a class that I'm currently working on
@Parcelize
class Time(var hour:Int, var minute:Int):Comparable<Time>,Parcelable
I want to add a setter to member variables hour and minute so that they would stay in time format. And the class has to be passed through intent, so it implements Parcelable. But it says that a Parcelable class should have a primary constructor so I'm having problem with adding setters.
Can anyone please tell me why and a solution? Thank you.
android kotlin asked Nov 27 '18 at 12:29
BullGomBullGom
11812
make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48
add a comment |
0
0
0
Below is a class that I'm currently working on
@Parcelize
class Time(var hour:Int, var minute:Int):Comparable<Time>,Parcelable
I want to add a setter to member variables hour and minute so that they would stay in time format. And the class has to be passed through intent, so it implements Parcelable. But it says that a Parcelable class should have a primary constructor so I'm having problem with adding setters.
Can anyone please tell me why and a solution? Thank you.
android kotlin asked Nov 27 '18 at 12:29
BullGomBullGom
11812
Below is a class that I'm currently working on
@Parcelize
class Time(var hour:Int, var minute:Int):Comparable<Time>,Parcelable
I want to add a setter to member variables hour and minute so that they would stay in time format. And the class has to be passed through intent, so it implements Parcelable. But it says that a Parcelable class should have a primary constructor so I'm having problem with adding setters.
Can anyone please tell me why and a solution? Thank you.
android kotlin android kotlin asked Nov 27 '18 at 12:29
BullGomBullGom
11812
asked Nov 27 '18 at 12:29
BullGomBullGom
11812
edited Nov 27 '18 at 12:54
BullGom
asked Nov 27 '18 at 12:29
BullGomBullGom
11812
asked Nov 27 '18 at 12:29
BullGomBullGom
11812
asked Nov 27 '18 at 12:29
BullGomBullGom
11812
11812
make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48
add a comment |
make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48
make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48
add a comment |
1 Answer
1
active
oldest
votes
2
Kotlin's properties are already shipped with getters and setters. Every time you say time.hour = 5 or val currentTime = time.hour - corresponding setter or getter is invoked.
The problem here is not with constructor, but with CREATOR that parcelable requires.
The complete example would look like this:
class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable {
override fun writeToParcel(dest: Parcel?, flags: Int) {
dest!!.writeInt(hour)
dest.writeInt(minute)
}
override fun describeContents(): Int = 0
override fun compareTo(other: Time): Int {
// your comparsion logic
}
companion object CREATOR : Parcelable.Creator<Time> {
override fun createFromParcel(parcel: Parcel): Time {
return Time(parcel.readInt(), parcel.readInt())
}
override fun newArray(size: Int): Array<Time?> {
return arrayOfNulls(size)
}
}
}
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.
– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrapTimedata class instance with another object that knows how to parse, or makingTimenot data class and implement mentioned methods yourself.
– Andrey Ilyunin
Nov 27 '18 at 13:01
|
show 3 more comments
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
Kotlin's properties are already shipped with getters and setters. Every time you say time.hour = 5 or val currentTime = time.hour - corresponding setter or getter is invoked.
The problem here is not with constructor, but with CREATOR that parcelable requires.
The complete example would look like this:
class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable {
override fun writeToParcel(dest: Parcel?, flags: Int) {
dest!!.writeInt(hour)
dest.writeInt(minute)
}
override fun describeContents(): Int = 0
override fun compareTo(other: Time): Int {
// your comparsion logic
}
companion object CREATOR : Parcelable.Creator<Time> {
override fun createFromParcel(parcel: Parcel): Time {
return Time(parcel.readInt(), parcel.readInt())
}
override fun newArray(size: Int): Array<Time?> {
return arrayOfNulls(size)
}
}
}
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.
– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrapTimedata class instance with another object that knows how to parse, or makingTimenot data class and implement mentioned methods yourself.
– Andrey Ilyunin
Nov 27 '18 at 13:01
|
show 3 more comments
2
Kotlin's properties are already shipped with getters and setters. Every time you say time.hour = 5 or val currentTime = time.hour - corresponding setter or getter is invoked.
The problem here is not with constructor, but with CREATOR that parcelable requires.
The complete example would look like this:
class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable {
override fun writeToParcel(dest: Parcel?, flags: Int) {
dest!!.writeInt(hour)
dest.writeInt(minute)
}
override fun describeContents(): Int = 0
override fun compareTo(other: Time): Int {
// your comparsion logic
}
companion object CREATOR : Parcelable.Creator<Time> {
override fun createFromParcel(parcel: Parcel): Time {
return Time(parcel.readInt(), parcel.readInt())
}
override fun newArray(size: Int): Array<Time?> {
return arrayOfNulls(size)
}
}
}
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.
– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrapTimedata class instance with another object that knows how to parse, or makingTimenot data class and implement mentioned methods yourself.
– Andrey Ilyunin
Nov 27 '18 at 13:01
|
show 3 more comments
2
2
2
Kotlin's properties are already shipped with getters and setters. Every time you say time.hour = 5 or val currentTime = time.hour - corresponding setter or getter is invoked.
The problem here is not with constructor, but with CREATOR that parcelable requires.
The complete example would look like this:
class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable {
override fun writeToParcel(dest: Parcel?, flags: Int) {
dest!!.writeInt(hour)
dest.writeInt(minute)
}
override fun describeContents(): Int = 0
override fun compareTo(other: Time): Int {
// your comparsion logic
}
companion object CREATOR : Parcelable.Creator<Time> {
override fun createFromParcel(parcel: Parcel): Time {
return Time(parcel.readInt(), parcel.readInt())
}
override fun newArray(size: Int): Array<Time?> {
return arrayOfNulls(size)
}
}
}
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
Kotlin's properties are already shipped with getters and setters. Every time you say time.hour = 5 or val currentTime = time.hour - corresponding setter or getter is invoked.
The problem here is not with constructor, but with CREATOR that parcelable requires.
The complete example would look like this:
class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable {
override fun writeToParcel(dest: Parcel?, flags: Int) {
dest!!.writeInt(hour)
dest.writeInt(minute)
}
override fun describeContents(): Int = 0
override fun compareTo(other: Time): Int {
// your comparsion logic
}
companion object CREATOR : Parcelable.Creator<Time> {
override fun createFromParcel(parcel: Parcel): Time {
return Time(parcel.readInt(), parcel.readInt())
}
override fun newArray(size: Int): Array<Time?> {
return arrayOfNulls(size)
}
}
}
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
edited Nov 27 '18 at 12:51
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
answered Nov 27 '18 at 12:45
Andrey IlyuninAndrey Ilyunin
1,318220
1,318220
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.
– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrapTimedata class instance with another object that knows how to parse, or makingTimenot data class and implement mentioned methods yourself.
– Andrey Ilyunin
Nov 27 '18 at 13:01
|
show 3 more comments
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.
– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrapTimedata class instance with another object that knows how to parse, or makingTimenot data class and implement mentioned methods yourself.
– Andrey Ilyunin
Nov 27 '18 at 13:01
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
I'm currently using the @Parcelize decorator. Should I override CREATOR?
– BullGom
Nov 27 '18 at 12:51
If you use
@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.– Andrey Ilyunin
Nov 27 '18 at 12:53
If you use
@Parcelize, then making this class a data class (data class Time(var hour: Int, var minute: Int) : Comparable<Time>, Parcelable) would be enough.– Andrey Ilyunin
Nov 27 '18 at 12:53
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
How do you modify setter?
– BullGom
Nov 27 '18 at 12:54
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
You mean overriding default setter with custom implementation? Here's how you can do it: stackoverflow.com/questions/38492103/…
– Andrey Ilyunin
Nov 27 '18 at 12:58
1
1
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrap
Time data class instance with another object that knows how to parse, or making Time not data class and implement mentioned methods yourself.– Andrey Ilyunin
Nov 27 '18 at 13:01
It is not recommended to contain processing logic inside data classes, so I would recommend either to wrap
Time data class instance with another object that knows how to parse, or making Time not data class and implement mentioned methods yourself.– Andrey Ilyunin
Nov 27 '18 at 13:01
|
show 3 more comments
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make it a data class
– Tim Castelijns
Nov 27 '18 at 12:29
I'm not familiar with kotlin, but what exactly hinders you writing custom methods?
– Rafael T
Nov 27 '18 at 12:37
@RafaelT Custom methods for what?
– BullGom
Nov 27 '18 at 12:48