I am running the latest Xamarin Forms on VS 2019 community edition.
I just started the basic Xamarin Forms project and added a Flyout page template to it.
When running this on the Android emulator it works fine, but the menu won't close after selecting a page.
The code has not changed apart from adding another page to the menu items.
The code isPresented = false is still there but has no effect whatsover.
Is it simply not possible to have the menu collapse in landscape mode? Then what are my alternatives?
You just have to add in the MenuPage (the main file, the first one that is generated) the following property:
FlyoutLayoutBehavior = "Popover"
public MasterMenuItem ()
{
InitializeComponent ();
MasterBehavior = MasterBehavior.Popover; // This solve my problem
}
I added a new layout file to my android project, I tried to reference the layout in my activity class like this SetContentView(Resource.Layout.newlayout), when I built my project, I got newlayout doesn't exist.
I got this fixed by changing the new layout build action from "BundleResource" to "AndroidResource" in the layout properties tab.
You need to simply build the solution once again to get the Layout.
Xamarin android will convert the resource files into int during build.
lemme know if you find any errors.
[Activity(Label = "Hello", MainLauncher = true, ScreenOrientation = ScreenOrientation.Portrait, Theme = "#android:style/Theme.Black.NoTitleBar")]
public class NewActivity : Activity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.newlayout);
}
}
newLayout.axml
Rebuild the solution and it should work.
Post errors too if not.
I am really confused right now because whenever I create a new Android app with blank activity it always comes out with fragment_main.xml. I just wanted to create a blank activity without the fragment one.
In the first image the blank activity comes with the fragment layout:
The second image shows the created fragment_main
Now I am really confused... this only happened after updating ADT to the latest version.
I have referred to this thread: Adt doesn't create default hello world but command line does_
I just wanted to make an Android app with blank activity with no fragment view.
For those who would like instructions on how to remove Fragments from the project:
1) Copy all the contents of res/layout/fragment_main.xml. Open activity_main.xml, delete the FrameLayout, and paste in the copied contents.
2) Delete fragment_main.xml
3) In MainActivity.java, delete the whole PlaceHolderFragment class:
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main,
container, false);
return rootView;
}
}
4) Delete the following lines from onCreate():
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
At this point you should be all set to run the project.
You can use the previous template by editing the template files inside the Android SDK folder. But, make sure you have a backup of the "BlankActivity" folder.
Go to /templates/tools/templates/activities/BlankActivity
Locate the template.xml file and locate the following piece of code
<parameter
id="fragmentLayoutName"
name="Fragment Layout Name"
type="string"
constraints="layout|unique|nonempty"
suggest="fragment_${classToResource(activityClass)}"
default="fragment_main"
help="The name of the layout to create for the activity's content fragment" />
and change the constraints to constraints="empty".
Locate recipie.xml.ftl and locate the following piece of code
<instantiate from="res/layout/fragment_simple.xml.ftl"
to="${escapeXmlAttribute(resOut)}/layout/${fragmentLayoutName}.xml" />
and comment the whole line.
Locate SampleActivity.java.ftl file inside root/src/app_package and delete these two lines
<#include "include_options_menu.java.ftl">
<#include "include_fragment.java.ftl">
Locate fragment_simple.xml.ftl and activity_fragment_container.xml.ftl file inside root/res/layout. Copy the contents of fragment_simple.xml.ftl file to activity_fragment_container.xml.ftl file.
Now when you try to create a new activity, you'll get this screen
You can leave the Fragment Layout Name field blank.
This works fine for me in the case of blank activity. I'm not sure if this is the right approach, with discarding fragments and all, but this works for me.
This is a new feature of ADT version 22.6.0:
http://developer.android.com/tools/sdk/eclipse-adt.html
Edit: With the latest ADT updates there is a new template called "Empty Activity" that has no fragments. it's a plain class that extends Activity (Even without the default menu).
Notice that there is also a "Blank Activity" which extends ActionBarActivity and has fragments
Thank you to the person that reported this, https://code.google.com/p/android/issues/detail?id=67513
This was my first glimpse into android-review.googlesource.com. Digging around I didn’t see a way to download the patch set that was put together and I’m unsure how to “cherry pick” tools_r22.6, If there's a thread that explains it a link would be appreciated.
Here’s how I went about it.
On your machine navigate to your SDK folder then \tools\templates\activities
Copy the BlankActivities folder and paste it into the same directory.
Rename BlankActivities_copy to EmptyActivities
Go to https://android-review.googlesource.com/#/c/88890/4
Under the Files section there is a list of links. Each link directs you to the xml that needs to be added to the new EmptyActivities folder you created.
Copy the xml from the right pane to the path\file at the top of the left pane(the link was also the path). If the file already exists delete the contents and replace. If the file doesn’t exist, create it and copy the xml into the file.
Repeat for each of the links.
Close and reopen Eclipse. If you have any of the files open in an editor Eclipse will crash.
Thank you to Josiah Gaskin at google with the unbelievable 2 day turnaround!
No training literature references the fragments in the BlankActivity. I’m sure this fix saved me countless hours trying to figure out how to navigate around fragments while trying to learn a new IDE.
Thanks again.
If you download the latest ADT 22.6.3 (with build tools 19.0.3) you will have the option to create a new Empty Activity that doesn't use fragments
I have also faced the same issue.
I just deleted the eclipse and again downloaded the ADT bundle from http://developer.android.com/sdk/index.html#download
To recover your previous projects, just change the work-space to your previous one.
This worked for me.
If you don't want the fragment part to be in your app then simply "unckeck the create activity option at project setup wizard, then
manually create the activity and layout" for your project.
A solution to this, is a copy of the older "Blank Activity" in %Wherever your ADT bundle is%\sdk\tools\templates\activities\.
If someone has an older version of it, you can rename it, place it in here %Wherever your ADT bundle is%\sdk\tools\templates\activities\ and then when starting your project, select this folder instead of "Blank Activity", so if you have a copy please share.
We found a solution to this:
When you create a project select "empty" activity. Then it create a MainActivity class that extends Activity and an activity_main.xml layout.
In other words, it give you the behavior that was there before.
This worked in ADT 22.6.3.
While creating a new Application,
just copy the Layout Name to the Fragment Layout Name (e.g. activity_main)
Voila!!!
You get an activity without the fragment part.
Remove this portion of the code from activity:
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
Clean the project.
A blank activity really should be more simple than this.
It appears that a fix is currently pending:
https://code.google.com/p/android/issues/detail?id=67513&q=blank%20activity&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars
You can skip the create activity option when you create your project and add in an activity manually.
If you find it really really annoying you can try rolling back ADT and the SDK:
Download the 22.3 sdk tools from: dl-ssl.google.com/android/repository/##Your platform's version of the sdk here##
For example osx is tools_r22.3-macosx.zip
Unzipping that file will give you a folder called "tools" Use this to replace the folder of the same name found in /path-to-your-android- installation/android-sdk-macosx/
Next you need to uninstall your eclipse adt plugin. Go to help -> install new software Click the link to see what's installed already Select all of the android packages and click uninstall. Restart Eclipse
Download the 22.3 ADT plugin from: http://dl.google.com/android/ADT-22.3.0.zip Unzip this file
Back in eclipse click help -> install new software Click add and select the local file you just unzipped Check what you want to install and click install Restart eclipse again
I done it by replacing the BlankActivity(22.6.2) folder to the older sdk BlankActivity(22.6.1) present in the tools/templates directory in android-sdk.
Not sure if this works completely,
Steps
1) Right click on your project goto properties->Android, remove reference library and press apply.
now you would see errors in your project go to res->values->styles, replace AppBasetheme's parent by parent="android:Theme.Light"
do this for all values folder except in values_v14 there put parent="android:Theme.Holo.Light.DarkActionBar"
2) Now goto MainActivity replace "extends ActionBarActivity" by "extends Activity". Eclipse will prompt you to import for activity do it.
now delete this part of code
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
from activity class
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
Now remove all unused imports.
3) Goto res->Layouts->fragment.xml, copy code of fragment into activity_main.xml.
Delete fragment.xml.
Now goto main.xml
Replace this
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never"/>
by
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
android:showAsAction="never"/>
4) Now Click on Project and clean your project
For small projects, create a project without an activity and add/edit activities, layouts, and manifest manually.
Android heard our voice :).
Just upgrade or download ADT version to 23.0.2 or higher.
Now you can choose blank activity like this,
Im getting this error message. I created a new project and hit debug to test it. I added nothing and i get this pop up message. what could be my issue? I can create a new blank project wtih out the Controllers and Models projects in them it debugs just fine. But i need to use this solution provided to me.
New to mono droid any help will be apreciated.
You issue could be that none of the projects have been set to be deployed to a device.
Right click your Solution > Properties > Configuration Properties > Tick The Deploy checkbox for your Application Project if not already.
Also make sure to mark one of your activities with MainLauncher = true, otherwise Android does not know which Activity to start first. This is done in the [Activity()] attribute like so:
[Activity(Label = "Epic Activity", MainLauncher = true, Icon = "#drawable/icon")]
public class Activity1 : Activity {}
what could be my issue?
You are using Visual Studio... Android plays much nicer with Eclipse.
Kidding aside, every Android application requires an AndroidManifest.xml file. It looks like you are using MonoDroid, and there are docs about creating the manifest file.
Also, make sure you have built the project.
AndroidManifest.xml is generated as part of the build process, and the XML found within Properties\AndroidManifest.xml is merged with XML generated based on custom attributes.
I'm trying to use PhoneGap with Android. In the Sample that I run the main app opens an html file:
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
super.loadUrl("file:///android_asset/www/index.html");
}
Now if I change something in the html page, Android always shows the previous content.
Is it possible that the output files (resources in that case) are not updated?
Also if I change the name of the html file in /assets/newName.html and into .loadUrl nothing changes.
Thank you, F.
I'm determined to find a proper answer to this, at the moment changes in the assets dir do not trigger a rebuild.
At the moment I'm slapping a new line in the Activity.java code to force a rebild/deploy..
Will update once I've looked for a real solution.
I see this sometimes when I add a data file to a project in eclipse.
If you think you pkg isnt being updated (re-built) then just rebuild it manually. If your using eclipse just do project->clean and select the project you want to clean. it'll rebuild automatically and include anything that was missed out.
OK Guys found.
The tutorial in the wiki.phonegap.com is obsolete.
Samples instead are updated!
Many thanks.