When to check for mounted before setting state?
The docs here say that:
It is an error to call this method after the framework calls dispose.
You can determine whether it is legal to call this method by checking
whether the mounted property is true.
I have never seen a Flutter example that checks for the mounted property, so which cases should we bother to actually check it?
flutter flutter-layout asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
add a comment |
The docs here say that:
It is an error to call this method after the framework calls dispose.
You can determine whether it is legal to call this method by checking
whether the mounted property is true.
I have never seen a Flutter example that checks for the mounted property, so which cases should we bother to actually check it?
flutter flutter-layout asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
add a comment |
The docs here say that:
It is an error to call this method after the framework calls dispose.
You can determine whether it is legal to call this method by checking
whether the mounted property is true.
I have never seen a Flutter example that checks for the mounted property, so which cases should we bother to actually check it?
flutter flutter-layout asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
The docs here say that:
It is an error to call this method after the framework calls dispose.
You can determine whether it is legal to call this method by checking
whether the mounted property is true.
I have never seen a Flutter example that checks for the mounted property, so which cases should we bother to actually check it?
flutter flutter-layout flutter flutter-layout asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
asked Nov 25 '18 at 6:01
mFeinsteinmFeinstein
2,36172978
2,36172978
add a comment |
add a comment |
1 Answer
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when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
quoted from SDK source
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
add a comment |
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1 Answer
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1 Answer
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when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
quoted from SDK source
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
add a comment |
when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
quoted from SDK source
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
add a comment |
when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
quoted from SDK source
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
when code calls setState() from a timer or an animation callback. The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
quoted from SDK source
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
edited Nov 25 '18 at 12:58
Rémi Rousselet
33.1k380104
33.1k380104
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
answered Nov 25 '18 at 9:07
Saed NabilSaed Nabil
1,27329
1,27329
add a comment |
add a comment |
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