Getting Mono.AndroidTools.RequiresUninstallException on Android

November 15, 2019, 11:40 am

Today I started getting this deployment error on android:

Severity Code Description Project File Line Suppression State
Error ADB0030: Mono.AndroidTools.RequiresUninstallException: The installed package is incompatible. Please manually uninstall and try again.
at Mono.AndroidTools.Internal.AdbOutputParsing.CheckInstallSuccess(String output, String packageName) in E:\A_work\267\s\External\androidtools\Mono.AndroidTools\Internal\AdbOutputParsing.cs:line 339
at Mono.AndroidTools.AndroidDevice.<>c__DisplayClass95_0.b__0(Task1 t) in E:\A\_work\267\s\External\androidtools\Mono.AndroidTools\AndroidDevice.cs:line 753 at System.Threading.Tasks.ContinuationTaskFromResultTask1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at AndroidDeviceExtensions.d__11.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Devices\AndroidDeviceExtensions.cs:line 187
--- End of stack trace from previous location where exception was thrown ---
at AndroidDeviceExtensions.d__11.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Devices\AndroidDeviceExtensions.cs:line 194
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at AndroidDeviceExtensions.d__11.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Devices\AndroidDeviceExtensions.cs:line 203
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Xamarin.AndroidTools.AndroidDeploySession.d__112.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 414
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Xamarin.AndroidTools.AndroidDeploySession.d__106.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 217
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Xamarin.AndroidTools.AndroidDeploySession.d__104.MoveNext() in E:\A_work\267\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 119 0

It only happens in Debug, but in Release i can deploy and run the app just fine.
Why is this happening?

This morning i installed the Android SDK 10.0 and I suspect it started after that, so now I uninstalled it, but I still can't deploy because of the same error.
Other apps from the same PC can be deployed just fine, so I don't get it...

I did check this out
https://docs.microsoft.com/en-us/xamarin/android/errors-and-warnings/adb0030

but I don't even have my app installed on the device...

Thanks

↧

Parameter error

October 12, 2019, 11:27 am

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Hello,

i have an error .

What does this mean and what to do about it ?

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If file excist else open other one

November 15, 2019, 12:37 pm

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I am using this to open a file in google docs in a webview

Webview.Source = "https://docs.google.com/document/d/1R_veGr31e39d4gJa0CtAdzU5BxDl5ZV-2bssofU8wSU/edit?usp=sharing";

But when it is not there i want to open another one as backup.
When removing the first from google docs it is not opening the second one

Trying to make a if statement , no luck

` if (File.Exists("https://docs.google.com/document/d/1R_veGr31e39d4gJa0CtAdzU5BxDl5ZV-2bssofU8wSU/edit?usp=sharing"))
{
Webview.Source = "https://docs.google.com/document/d/1R_veGr31e39d4gJa0CtAdzU5BxDl5ZV-2bssofU8wSU/edit?usp=sharing";

            }
          else
            Webview.Source = "https://docs.google.com/document/d/1JtPBbacWjjE1RnqT7MlliexLFk618iNS5yUBBCkh1bs/edit?usp=sharing";
        {

            }
    }`

↧

How to get instance of bound object?

November 15, 2019, 2:58 pm

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I have a ContentPage defined in .xaml that contains a ListView.

<ListView ItemsSource="{Binding Groups}" 
        IsGroupingEnabled="true" 
        GroupDisplayBinding="{Binding Title}"
        HasUnevenRows="true">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <yds:ZonesPagesItem/>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
</ListView>

This ListView contains items that are ContentViews (see above : yds.ZonesPagesItem), defined in another xaml :

<ContentView (...)>
    <StackLayout Orientation="Horizontal" > 
        <Image Source="{Binding ImageUrl}" />
        <Label Text="{Binding Title}"></Label>
    </StackLayout>
</ContentView>

In my Xaml ContentView, I can "bind" to bound object properties succesfully.
But I also need to manipulate programatically the bound object in c# code behind code. My problem is that I don't know how to get instance of bound object in C# side.

public partial class ZonesPagesItem : ContentView
{
    public ZonesPagesItem()
    {
        InitializeComponent();

        var boundObject = this.GetBoundObject();
        // Do some business logic job wih boundObject...
        // It does not compile! GetBoundObject() does not exist.
    }
}

See upper, I wish GetBoundObject() method exists!
This is what I'm looking for.
Any idea?

↧

I am getting warning from main thread.

November 15, 2019, 9:28 am

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I have many apis calls in a single page. The approach i am currently using is start a await Task.Run(() thread, do fetch operation, start Main Thread and do UI operations. The app works smooth but after few navigation, it stops responding. With some research it found thus can be due to main thread. Is this the correct way implementation, that i am using?

 await Task.Run(() =>
                {
fetchdata();
fetchData2();
fetchData3();

MainThread.BeginInvokeOnMainThread(() =>
                    {

//UI changes
}:

});

↧

How do you set STYLE property for a control in codebehind

November 15, 2019, 2:05 pm

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≪ Previous: I am getting warning from main thread.

How do I set a style in codebehind?

IE. if I want to set a Label Style in XAML I would use:

and my resource dictionary would have:

...

I have tried
var x = new Label()
{
Text = "Some Text",
Style = "tealSearchBarStyle" / Style = tealSearchBarStyle / Style = new Style("tealSearchBarStyle")
}

and none of those seem to work.

↧

美国内布拉斯加大学文凭毕业.证/成绩单#薇信6956.40122办理美国UNL毕业.证成绩单；文,凭/留信网认.证/使馆认证公.证

November 15, 2019, 4:47 pm

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美国内布拉斯加大学文凭毕业.证/成绩单#薇信6956.40122办理美国UNL毕业.证成绩单；文,凭/留信网认.证/使馆认证公.证

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美国伦斯勒理工学院文凭毕业.证/成绩单#薇信6956.40122办理美国RPI毕业.证成绩单；文,凭/留信网认.证/使馆认证公.证

November 15, 2019, 4:47 pm

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美国伦斯勒理工学院文凭毕业.证/成绩单#薇信6956.40122办理美国RPI毕业.证成绩单；文,凭/留信网认.证/使馆认证公.证

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Issue setting colors in XF

November 12, 2019, 8:50 am

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I am having some issues with setting the status bar color and the selected tab underline color in xamarin forms, especially android.

Status Bar
I thought that setting the colorPrimaryDark would set the status bar background color:
<item name="colorPrimaryDark">@color/primaryDark</item>

Which i set to yellow as a test, but instead it look black, with no text. If I swipe down from the top of the screen then somehow the text (time, battery, carrier etc show).

Tab Underline
I do this but the tab underline is still white:

  <!--Selected tab underline-->
  <style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
    <item name="colorAccent">@color/accent</item>
  </style>

How can I fix this? How do I set the tab underline color and the status bar color in android and iOS?
Thanks