Getting MediaPlayer: error (1, -2147483648)
MediaController mediacontroller = new MediaController(getActivity());
mediacontroller.setAnchorView(videoView);
videoView.setVideoPath("https://example.com");
videoView.start();
Class level variable
VideoView videoView
I put this in OnCreate
SetContentView(Resource.Layout.Main);
videoView = FindViewById<VideoView>(Resource.Id.video);
ImageButton button = FindViewById<ImageButton>(Resource.Id.two_btn);
MediaController mController = new
Android.Widget.MediaController(this);
mController.SetAnchorView(videoView);
videoView.SetMediaController(mController);
uriPath = "https://example.com";
Android.Net.Uri uri = Android.Net.Uri.Parse(uriPath);
videoView.RequestFocus();
videoView.SetVideoURI(uri);
videoView.Start();
Mine was in a button click event so I could start video with a button
Related
Xamarin Forms IconImageSource:
On Android Toolbar image is shown correctly, on iOS a white image is shown. How can I fix this?
I added file to Resources folder and set build Action to BundleResource.
If I change filename to non excisting file, image is not shown at all. I tried changing extension to JPG, same result, also a white image is shown.
I used this code snippit.
ToolbarItem toolbarItemSearch = new ToolbarItem { IconImageSource = ImageSource.FromFile("searchIcon.png") };
ToolbarItems.Add(toolbarItemSearch);
iOS has tinting the ToolbarItems by default , the color is blue/white .
To solve it we need to create a custom renderer for NavigationPage , and set the TintColor to transparent , and set the image with another rendering mode .
Sample code
[assembly: ExportRenderer(typeof(NavigationPage), typeof(MyRenderer))]
namespace FormsApp.iOS
{
class MyRenderer : NavigationRenderer
{
public override void PushViewController(UIViewController viewController, bool animated)
{
base.PushViewController(viewController, animated);
var currentPage = (this.Element as Xamarin.Forms.NavigationPage)?.CurrentPage;
if (this.NavigationBar == null || currentPage == null)
return;
var buttonItems = TopViewController.NavigationItem.RightBarButtonItems;
foreach (var button in buttonItems)
{
if(button.Image != null){
button.Image = button.Image.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
button.TintColor = UIColor.Clear;
}
}
}
}
}
Refer to
Image in Toolbar item on iOS are white(Xamarin Forms)
The solution from #ColeX - MSFT did the trick! Additionally make sure to do a null pointer check for non Image buttons.
I'm a newbie to Xamarin. I have created an application that uses DrawerLayout(Android). But my problem is that every time i select a item in the menu(DrawerLayout menu), the memory increases, and this causes the app to become slow and crush. I've tried to use Xamarin profiler to analyze memory leaks - it suspects something called String.FastAllocationString, but it doesn't really show the line(code) that causes String.FastAllocationString issue. Please help ? Here is my code :
MainActivity
DrawerLayout drawerLayout;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
drawerLayout = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);
// Init toolbar
var toolbar = FindViewById<Android.Support.V7.Widget.Toolbar>(Resource.Id.app_bar);
SetSupportActionBar(toolbar);
SupportActionBar.SetTitle(Resource.String.app_name);
SupportActionBar.SetDisplayHomeAsUpEnabled(true);
SupportActionBar.SetDisplayShowHomeEnabled(true);
// Attach item selected handler to navigation view
var navigationView = FindViewById<NavigationView>(Resource.Id.nav_view);
navigationView.NavigationItemSelected += NavigationView_NavigationItemSelected;
// Create ActionBarDrawerToggle button and add it to the toolbar
var drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, Resource.String.open_drawer, Resource.String.close_drawer);
drawerLayout.SetDrawerListener(drawerToggle);
drawerToggle.SyncState();
}
void NavigationView_NavigationItemSelected(object sender, NavigationView.NavigationItemSelectedEventArgs e)
{
var ft = FragmentManager.BeginTransaction();
ft.AddToBackStack(null);
switch (e.MenuItem.ItemId)
{
case (Resource.Id.nav_incidents):
SupportActionBar.SetTitle(Resource.String.toolbar_Test);
ft.Add(Resource.Id.HomeFrameLayout, new Test());
break;
}
ft.Commit();
ft.Dispose();
// Close drawer
drawerLayout.CloseDrawers();
}
Fragment
[Activity(Label = "Test")]
public class Test : Fragment
{
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.Inflate(Resource.Layout.Test, container, false);
return view;
}
}
Xamarin Profiler
you have to check fragment is available before you add new one
switch (e.MenuItem.ItemId)
{
case (Resource.Id.nav_incidents):
SupportActionBar.SetTitle(Resource.String.toolbar_Test);
Fragment myFragment =
(Fragment)FragmentManager.FindFragmentByTag("FRAGMENT1");
if (myFragment.IsVisible){
ft.Replace(Resource.Id.HomeFrameLayout, new Test(),"FRAGMENT1");
}else{
ft.Add(Resource.Id.HomeFrameLayout, new Test(),"FRAGMENT1");
}
break;
}
Hope this help
I am picking a photo from photo library and i get the following
AlbumPath:
assets-library://asset/asset.JPG?id=106E99A1-4F6A-45A2-B320-B0AD4A8E8473&ext=JPG
Path:
/Users/myname/Library/Developer/CoreSimulator/Devices/21CB035B-A738-4F74-B121-2DB2A6B5372A/data/Containers/Data/Application/3081A323-98AF-4EF6-95B9-29D4C2CD8425/Documents/temp/IMG_20170408_111143.jpg
How do i assign this image to a button ? I tried the following.
var file = await CrossMedia.Current.PickPhotoAsync(
new Plugin.Media.Abstractions.PickMediaOptions
{
});
Button btn = new Button();
btn.Image = (Xamarin.Forms.FileImageSource)ImageSource.FromFile(file.Path);
No image is displayed on the button. Any help help is appreciated.
Thank you.
Once you deploy the application the app will not have access to your mac. For the application to use the picture it will need to be a bundled resource within the iOS application. Below is a simple example of using images within an iOS app. You'll definitely want to consider just adding a gesture listener to your image instead of making it a button though. If you try to just use the image on a button you'll have to do some styling adjustments to get it to look clean.
Image Setup
Put image in iOS Resource folder
Make sure bundledresource is selected from image properties.
Image Button
public class ImageButton : ContentPage
{
private Button _imageBtn = new Button { Image = "icon.png", Text = "Sample button" };
public ImageButton()
{
Content = new StackLayout
{
Children =
{
_imageBtn
}
};
}
}
Image with TapGesture
public class ImageButton : ContentPage
{
private Image _imageBtn = new Image { Source = "icon.png" };
private TapGestureRecognizer _imageTap = new TapGestureRecognizer();
public ImageButton()
{
_imageBtn.GestureRecognizers.Add(_imageTap);
Content = new StackLayout
{
Children =
{
_imageBtn
}
};
_imageTap.Tapped += (s, e) =>
{
// handle the tap
};
}
}
I am using dependency injection to fireup Wikitude from my PCL on iOS Native Xamarin. This works fine. I added a button on Wikitude to exit and go back to the PCL - this works fine up the the point where I need to Delete or Remove the ViewController or Storyboard I originally created. Not sure how to do it..
To start Wikitude we do:
public void LaunchWikitude()
{
var storyboard = UIStoryboard.FromName("MainStoryboard_iPhone", null);
var controller = storyboard.InstantiateViewController("StoryBoardViewController") as UIViewController;
//var window = new UIWindow(UIScreen.MainScreen.Bounds);
var window = UIApplication.SharedApplication.KeyWindow;
window.RootViewController = controller;
window.MakeKeyAndVisible();
}
And to stop Wikitude and go back to the PCL (where I'm stuck):
public override void InvokedURL(WTArchitectView architectView, NSUrl url)
{
Console.WriteLine ("architect view invoked url: " + url);
//architectView.Stop();
var window = UIApplication.SharedApplication.KeyWindow;
var vc = window.RootViewController;
}
I have a list view in which inside each cell I have two textview, I need to handle the click event for one of the textview element. But when I put the click event inside the GetView() of the adapter, it is called multiple times.
public override View GetView(int position, View convertView, ViewGroup parent)
{
var item = tableItems[position];
ViewHolder holder;
View view = convertView;
if (view == null)
{
LayoutInflater layoutInflator = LayoutInflater.From(mContext);
view = layoutInflator.Inflate(Resource.Layout.myListViewCell, null);
holder = new ViewHolder();
holder.tvEmpName = view.FindViewById<TextView>(Resource.Id.tv_EmpName);
holder.tvEmpPhone = view.FindViewById<TextView>(Resource.Id.tv_EmpPhone);
view.Tag = holder;
}
else
{
holder = (ViewHolder)view.Tag;
}
holder.tvEmpName.Text = item.FullName;
holder.tvEmpPhone.Text = item.Phone;
holder.tvEmpPhone.Click += (sender, e) => {
// Click event to launch the Popup menu
// This event is being called multiple times, as Get view() being called multiple times.
};
return view;
}
I gone through this similar thread, but didn't find any solution.
The event is called multiple times because evertime when the metod getview is called you add a click event with +=.
In this case you can put the click event inside the if, like that:
if (view == null)
{
LayoutInflater layoutInflator = LayoutInflater.From(mContext);
view = layoutInflator.Inflate(Resource.Layout.myListViewCell, null);
holder = new ViewHolder();
holder.tvEmpName = view.FindViewById<TextView>(Resource.Id.tv_EmpName);
holder.tvEmpPhone = view.FindViewById<TextView>(Resource.Id.tv_EmpPhone);
view.Tag = holder;
holder.tvEmpPhone.Click += (sender, e) => {
// Code here
};
}
But the recyclerview is better than listview for this.