Devv Active Member Licensed User Longtime User Aug 2, 2015 #1 As the tile say when i have to us the try and catch block ? is it safer to use it in every function (to avoid forced closed) vibrating or toasting does need try block ? any info is highly appreciated
As the tile say when i have to us the try and catch block ? is it safer to use it in every function (to avoid forced closed) vibrating or toasting does need try block ? any info is highly appreciated
Erel B4X founder Staff member Licensed User Longtime User Aug 3, 2015 #2 Devv said: is it safer to use it in every function (to avoid forced closed) Click to expand... No. You will break a very important concept which is to let your program "fail fast". You should only catch exceptions in cases that are out of your control and can fail. For example if the user enters text and you need to parse it. Upvote 0
Devv said: is it safer to use it in every function (to avoid forced closed) Click to expand... No. You will break a very important concept which is to let your program "fail fast". You should only catch exceptions in cases that are out of your control and can fail. For example if the user enters text and you need to parse it.
Devv Active Member Licensed User Longtime User Aug 3, 2015 #3 Erel said: No. You will break a very important concept which is to let your program "fail fast". You should only catch exceptions in cases that are out of your control and can fail. For example if the user enters text and you need to parse it. Click to expand... What will happen if i did too many try blocks ? can you give me more examples ? Upvote 0
Erel said: No. You will break a very important concept which is to let your program "fail fast". You should only catch exceptions in cases that are out of your control and can fail. For example if the user enters text and you need to parse it. Click to expand... What will happen if i did too many try blocks ? can you give me more examples ?
ilan Expert Licensed User Longtime User Aug 3, 2015 #4 Devv said: What will happen if i did too many try blocks ? can you give me more examples ? Click to expand... If you enter itry..catch in every sub you will never know when your code does not work correctly. Different phones/android versions could give crash on a specific sub that you will not see on your phone and thats because something is missing or done not correctly and your app will not work the same on other phones like it does on yours. Its important to get the crash report to check what could be wrong in your code Example: You want to use a value from a saved file in your dirinternal directory, the first time you tried it while developing you had a crash because the file was not available so you created it and keep developing and forget to write if file.exists()... then And now on new install those values would be blank and no error will be displayed because this code is between try... catch Last edited: Aug 20, 2015 Upvote 0
Devv said: What will happen if i did too many try blocks ? can you give me more examples ? Click to expand... If you enter itry..catch in every sub you will never know when your code does not work correctly. Different phones/android versions could give crash on a specific sub that you will not see on your phone and thats because something is missing or done not correctly and your app will not work the same on other phones like it does on yours. Its important to get the crash report to check what could be wrong in your code Example: You want to use a value from a saved file in your dirinternal directory, the first time you tried it while developing you had a crash because the file was not available so you created it and keep developing and forget to write if file.exists()... then And now on new install those values would be blank and no error will be displayed because this code is between try... catch
