Mixing
Runnables and Activities
I have currently the following problem:
I got a server that provides and API via Google Protobuf. A Program (in this case an Android App) can request informations. I have an Activity in Android that will request Informations in the Background via a Runnable, which will then process the network request and dispatch to a function on the mainthread to update the UI with the new informations. Therefore I give the runnable a final interface with the function to dispatch which is implemented by the Activity. Now as the network stuff happens in the background and the UI should not block (e.g. with a Loading Spinner) I dont know what happens when the user switches to another Activity while the Runnable is still active. Will it still dispatch properly even if there is another Activity active? What is good design practice to solve this.
Of course I thought about adding a variable to the Runnable to mark it as dont dispatch, but there still could be race conditions (it gets dispatched while the user hits the back button, which would already have the dispatched function in the queue for the mainthread before marking the Runnable as aborted).
If you need any additional informations, please ask, I am happy to provide them.
java
android multithreading edited Jan 2 at 11:54
Fantômas
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
add a comment |
I have currently the following problem:
I got a server that provides and API via Google Protobuf. A Program (in this case an Android App) can request informations. I have an Activity in Android that will request Informations in the Background via a Runnable, which will then process the network request and dispatch to a function on the mainthread to update the UI with the new informations. Therefore I give the runnable a final interface with the function to dispatch which is implemented by the Activity. Now as the network stuff happens in the background and the UI should not block (e.g. with a Loading Spinner) I dont know what happens when the user switches to another Activity while the Runnable is still active. Will it still dispatch properly even if there is another Activity active? What is good design practice to solve this.
Of course I thought about adding a variable to the Runnable to mark it as dont dispatch, but there still could be race conditions (it gets dispatched while the user hits the back button, which would already have the dispatched function in the queue for the mainthread before marking the Runnable as aborted).
If you need any additional informations, please ask, I am happy to provide them.
java
android multithreading edited Jan 2 at 11:54
Fantômas
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
see bound services
– pskink
Jan 2 at 9:34
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35
add a comment |
I have currently the following problem:
I got a server that provides and API via Google Protobuf. A Program (in this case an Android App) can request informations. I have an Activity in Android that will request Informations in the Background via a Runnable, which will then process the network request and dispatch to a function on the mainthread to update the UI with the new informations. Therefore I give the runnable a final interface with the function to dispatch which is implemented by the Activity. Now as the network stuff happens in the background and the UI should not block (e.g. with a Loading Spinner) I dont know what happens when the user switches to another Activity while the Runnable is still active. Will it still dispatch properly even if there is another Activity active? What is good design practice to solve this.
Of course I thought about adding a variable to the Runnable to mark it as dont dispatch, but there still could be race conditions (it gets dispatched while the user hits the back button, which would already have the dispatched function in the queue for the mainthread before marking the Runnable as aborted).
If you need any additional informations, please ask, I am happy to provide them.
java
android multithreading edited Jan 2 at 11:54
Fantômas
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
I have currently the following problem:
I got a server that provides and API via Google Protobuf. A Program (in this case an Android App) can request informations. I have an Activity in Android that will request Informations in the Background via a Runnable, which will then process the network request and dispatch to a function on the mainthread to update the UI with the new informations. Therefore I give the runnable a final interface with the function to dispatch which is implemented by the Activity. Now as the network stuff happens in the background and the UI should not block (e.g. with a Loading Spinner) I dont know what happens when the user switches to another Activity while the Runnable is still active. Will it still dispatch properly even if there is another Activity active? What is good design practice to solve this.
Of course I thought about adding a variable to the Runnable to mark it as dont dispatch, but there still could be race conditions (it gets dispatched while the user hits the back button, which would already have the dispatched function in the queue for the mainthread before marking the Runnable as aborted).
If you need any additional informations, please ask, I am happy to provide them.
java
android multithreading java
android multithreading edited Jan 2 at 11:54
Fantômas
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
edited Jan 2 at 11:54
Fantômas
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
edited Jan 2 at 11:54
Fantômas
32.8k156490
edited Jan 2 at 11:54
Fantômas
32.8k156490
edited Jan 2 at 11:54
Fantômas
32.8k156490
32.8k156490
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
asked Jan 2 at 9:22
NidhoeggerNidhoegger
2,53312041
2,53312041
see bound services
– pskink
Jan 2 at 9:34
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35
add a comment |
see bound services
– pskink
Jan 2 at 9:34
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35
see bound services
– pskink
Jan 2 at 9:34
see bound services
– pskink
Jan 2 at 9:34
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35
add a comment |
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see bound services
– pskink
Jan 2 at 9:34
Hey, thank you, but I do not intent to use a service. Also the connection wont be permament, only when requesting infos. And these infos only will be requested when the GUI is visible.
– Nidhoegger
Jan 2 at 9:35