Error on LoadApplication in Xamarin Forms PCL
I created a new Xamarin Forms PCL solution, and in debug mode I checked the Enable ProGuard option and I selected Linking comboxbox to Sdk and User Assemblies.
Now I run my application on android, after that it shows me an error in MainActivity.cs class and on line
LoadApplication(new App());
Error:
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
I do that because of to decrease the size of my release app, and I have to change the release mode to debug in order to check what happened.
c#
android xamarin portable-class-library edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
|
show 3 more comments
I created a new Xamarin Forms PCL solution, and in debug mode I checked the Enable ProGuard option and I selected Linking comboxbox to Sdk and User Assemblies.
Now I run my application on android, after that it shows me an error in MainActivity.cs class and on line
LoadApplication(new App());
Error:
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
I do that because of to decrease the size of my release app, and I have to change the release mode to debug in order to check what happened.
c#
android xamarin portable-class-library edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it toLoadApplication(new PCLNameHere.App())
– Tristan
Mar 3 '18 at 8:36
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46
|
show 3 more comments
I created a new Xamarin Forms PCL solution, and in debug mode I checked the Enable ProGuard option and I selected Linking comboxbox to Sdk and User Assemblies.
Now I run my application on android, after that it shows me an error in MainActivity.cs class and on line
LoadApplication(new App());
Error:
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
I do that because of to decrease the size of my release app, and I have to change the release mode to debug in order to check what happened.
c#
android xamarin portable-class-library edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
I created a new Xamarin Forms PCL solution, and in debug mode I checked the Enable ProGuard option and I selected Linking comboxbox to Sdk and User Assemblies.
Now I run my application on android, after that it shows me an error in MainActivity.cs class and on line
LoadApplication(new App());
Error:
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
I do that because of to decrease the size of my release app, and I have to change the release mode to debug in order to check what happened.
c#
android xamarin portable-class-library c#
android xamarin portable-class-library edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
edited Nov 24 '18 at 19:01
Federico Grandi
3,16621229
3,16621229
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
asked Mar 3 '18 at 7:58
Amir Hossein KhajeganAmir Hossein Khajegan
3111
3111
I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it toLoadApplication(new PCLNameHere.App())
– Tristan
Mar 3 '18 at 8:36
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46
|
show 3 more comments
I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it toLoadApplication(new PCLNameHere.App())
– Tristan
Mar 3 '18 at 8:36
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46
I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it to
LoadApplication(new PCLNameHere.App())– Tristan
Mar 3 '18 at 8:36
I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it to
LoadApplication(new PCLNameHere.App())– Tristan
Mar 3 '18 at 8:36
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46
|
show 3 more comments
2 Answers
2
active
oldest
votes
As per: The type or namespace 'App' does not exist in the current namespace
Clean the solution
Build the PCL
Remove the PCL reference from the affected project(s)
Re-add the PCL reference
Build
I tried this solution and it works.
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
add a comment |
Take a look at your App.xaml.cs file.
If you have a "InitializeComponent does not exist in the current context error", this is likely caused by a known VS bug.
Solution:
- Right click on App.xaml.cs and select Properties.
- Change the Build Action to "Content".
- Apply.
- Change Build Action back to C# Compiler.
- Clean Solution.
- Build and Deploy.
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
As per: The type or namespace 'App' does not exist in the current namespace
Clean the solution
Build the PCL
Remove the PCL reference from the affected project(s)
Re-add the PCL reference
Build
I tried this solution and it works.
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
add a comment |
As per: The type or namespace 'App' does not exist in the current namespace
Clean the solution
Build the PCL
Remove the PCL reference from the affected project(s)
Re-add the PCL reference
Build
I tried this solution and it works.
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
add a comment |
As per: The type or namespace 'App' does not exist in the current namespace
Clean the solution
Build the PCL
Remove the PCL reference from the affected project(s)
Re-add the PCL reference
Build
I tried this solution and it works.
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
As per: The type or namespace 'App' does not exist in the current namespace
Clean the solution
Build the PCL
Remove the PCL reference from the affected project(s)
Re-add the PCL reference
Build
I tried this solution and it works.
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
answered Apr 26 '18 at 1:57
DiomedesDiomedes
344618
344618
add a comment |
add a comment |
Take a look at your App.xaml.cs file.
If you have a "InitializeComponent does not exist in the current context error", this is likely caused by a known VS bug.
Solution:
- Right click on App.xaml.cs and select Properties.
- Change the Build Action to "Content".
- Apply.
- Change Build Action back to C# Compiler.
- Clean Solution.
- Build and Deploy.
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
add a comment |
Take a look at your App.xaml.cs file.
If you have a "InitializeComponent does not exist in the current context error", this is likely caused by a known VS bug.
Solution:
- Right click on App.xaml.cs and select Properties.
- Change the Build Action to "Content".
- Apply.
- Change Build Action back to C# Compiler.
- Clean Solution.
- Build and Deploy.
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
add a comment |
Take a look at your App.xaml.cs file.
If you have a "InitializeComponent does not exist in the current context error", this is likely caused by a known VS bug.
Solution:
- Right click on App.xaml.cs and select Properties.
- Change the Build Action to "Content".
- Apply.
- Change Build Action back to C# Compiler.
- Clean Solution.
- Build and Deploy.
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
Take a look at your App.xaml.cs file.
If you have a "InitializeComponent does not exist in the current context error", this is likely caused by a known VS bug.
Solution:
- Right click on App.xaml.cs and select Properties.
- Change the Build Action to "Content".
- Apply.
- Change Build Action back to C# Compiler.
- Clean Solution.
- Build and Deploy.
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
answered Jul 13 '18 at 13:33
WilhelmWilhelm
676
676
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
add a comment |
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
I did it before but that error is persist exists
– Amir Hossein Khajegan
Jul 14 '18 at 17:24
add a comment |
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I assume you are using Xamarin Forms? Please post the line of code that is throwing the error. I think your issue is that you need to change it to
LoadApplication(new PCLNameHere.App())– Tristan
Mar 3 '18 at 8:36
I tried that , but it falls into error on line LoadApplication(new App()); The important point is , when i changed Linking option to none and unchecked ProGuard option , my applicatrion run successfully. I need those options to decrease my final .apk file
– Amir Hossein Khajegan
Mar 3 '18 at 8:49
What does the rest of the stacktrace say?
– hvaughan3
Mar 3 '18 at 16:27
Linking against SDK assemblies only isn't enough?
– hichame.yessou
Mar 4 '18 at 1:23
@hvaughan3 The value of my Environment.StackTrace is : at System.Environment.get_StackTrace () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException_internal (System.Exception ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Diagnostics.Debugger.Mono_UnhandledException (System.Exception ex) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 at System.Object.d09f62bf-1e4f-438b-810e-1b2febfe5330 (System.IntPtr , System.IntPtr , System.IntPtr ) [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0
– Amir Hossein Khajegan
Mar 4 '18 at 12:46