I am stuck on a complex situation, when I am refreshing my adapter of recyclerview by notifyDataSetChanged, while it having focus on particular cell (with D-PAD), is being loss. After refresh focus is not showing
private void refreshedData() {
flag1 = true;
// new MyAsycTas().execute();
focusedElement();
// select();
runnable = new Runnable() {
#Override
public void run() {
Log.e(TAG, "Data refreshed starrt.......");
// isRefreshedData = true;
fetchXmlFromUrl = new FetchDataFromUrl(Demo2Activity.this, 0, Demo2Activity.this);
handler.removeCallbacks(runnable);
select();
handler.postDelayed(runnable, 9000);
}
};
// handler.postDelayed(runnable,
// Integer.valueOf(MyStaticClass.refreshTime) * 60000);
handler.postDelayed(runnable, 9000);
}
...
public void select() {
if (verticalListView != null) {
View view = verticalListView.getChildAt(vertical_position);
if (view != null) {
view = verticalListView.getChildAt(vertical_position);
recyclerView = (RecyclerView) view.findViewById(R.id.horizontal_recyclerview);
if (recyclerView != null) {
verticalListView.scrollToPosition(vertical_position);
((View) recyclerView.getChildAt(horizontal_position)).findViewById(R.id.cat_button_thumabnail)
.requestFocus();
} else {
LinearLayout linearLayout = (LinearLayout) view.findViewById(R.id.home_fragment_menu_container);
linearLayout.getChildAt(horizontal_position).requestFocus();
}
}
}
// refreshedData();
}
..
public void focusedElement() {
if (verticalListView != null) {
View view = verticalListView.getLayoutManager().getFocusedChild();
if (view != null) {
recyclerView = (RecyclerView) view.findViewById(R.id.horizontal_recyclerview);
if (recyclerView != null) {
vertical_position = (Integer) recyclerView.getTag();
horizontal_position = recyclerView.getChildAdapterPosition(recyclerView.getFocusedChild());
} else {
LinearLayout ll = (LinearLayout) view.findViewById(R.id.home_fragment_menu_container);
horizontal_position = ll.indexOfChild(ll.getFocusedChild());
}
}
}
}
Related
I have a Xamarin.Forms app with FreshMvvm, and I use secondary ToolbarItems. To do it in iOS, I had to make a custom renderer (unlike in Android). I was given a solution on how to implement it here:
ToolbarItems do not look right in iOS
This solution works perfectly for me. But by now, the toolbar menu grew longer, and some of its elements do not fit the iPhone's screen. I can slide the menu and see all the elements, but as soon as I release the screen, the view jumps back up, and while it is held by a finger, the elements are not clickable. How can this be solved? Can the menu made to wrap, or something else?
On Android, the menu stays where I scroll and I can click every item. Can it made stay where scrolled on iOS, too?
Here is my renderer's code:
using CoreGraphics;
using MobileApp.iOS.Renderers;
using MobileApp.iOS.Services;
using MobileApp.Pages;
using MobileApp.Services;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using UIKit;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;
[assembly: ExportRenderer(typeof(CustomToolbarContentPage),
typeof(RightToolbarMenuCustomRenderer))]
namespace MobileApp.iOS.Renderers
{
class RightToolbarMenuCustomRenderer : PageRenderer
{
private List<ToolbarItem> _primaryItems;
private List<ToolbarItem> _secondaryItems;
private UITableView _table;
private UITapGestureRecognizer _tapGestureRecognizer;
private UIView _transparentView;
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
if (e.NewElement is IAddToolbarItem item)
{
item.ToolbarItemAdded += Item_ToolbarItemAdded;
}
base.OnElementChanged(e);
}
private void Item_ToolbarItemAdded(object sender, System.EventArgs e)
{
if (Element is ContentPage page)
{
_primaryItems = page.ToolbarItems.Where(i => i.Order == ToolbarItemOrder.Primary).ToList();
_secondaryItems = page.ToolbarItems.Where(i => i.Order == ToolbarItemOrder.Secondary).ToList();
_secondaryItems.ForEach(t => page.ToolbarItems.Remove(t));
}
var element = (ContentPage)Element;
if (_secondaryItems?.Count == 0 && element.ToolbarItems.Any(a => (a.IconImageSource as FileImageSource)?.File == "more.png"))
{
element.ToolbarItems.Clear();
}
else if (_secondaryItems?.Count >= 1 && !element.ToolbarItems.Any(a => (a.IconImageSource as FileImageSource)?.File == "more.png"))
{
element.ToolbarItems.Add(new ToolbarItem()
{
Order = ToolbarItemOrder.Primary,
IconImageSource = "more.png",
Priority = 1,
Command = new Command(ToggleDropDownMenuVisibility)
});
}
}
private void ToggleDropDownMenuVisibility()
{
if (!DoesTableExist())
{
if ((View?.Subviews != null)
&& (View.Subviews.Length > 0)
&& (View.Bounds != null)
&& (_secondaryItems != null)
&& (_secondaryItems.Count > 0))
{
_table = OpenDropDownMenu(Element as IAddToolbarItem);
Add(_table);
}
}
else
CloseDropDownMenu();
}
private bool DoesTableExist()
{
if (View?.Subviews != null)
{
foreach (var subview in View.Subviews)
{
if (_table != null && subview == _table)
{
return true;
}
}
}
if (_tapGestureRecognizer != null)
{
_transparentView?.RemoveGestureRecognizer(_tapGestureRecognizer);
_tapGestureRecognizer = null;
}
_table = null;
_tapGestureRecognizer = null;
return false;
}
private UITableView OpenDropDownMenu(IAddToolbarItem secondaryMenuSupport)
{
_transparentView = _transparentView = new UIView(new CGRect(0, 0, View.Bounds.Width, View.Bounds.Height))
{
BackgroundColor = UIColor.FromRGBA(0, 0, 0, 0)
};
_tapGestureRecognizer = new UITapGestureRecognizer(CloseDropDownMenu);
_transparentView.AddGestureRecognizer(_tapGestureRecognizer);
Add(_transparentView);
UITableView table = null;
if (_secondaryItems != null && _secondaryItems.Count > 0)
{
table = new UITableView(GetPositionForDropDownMenu(secondaryMenuSupport.RowHeight, secondaryMenuSupport.TableWidth))
{
Source = new TableSource(_secondaryItems, _transparentView),
ClipsToBounds = false
};
table.ScrollEnabled = true;
table.Layer.ShadowColor = secondaryMenuSupport.ShadowColor.ToCGColor();
table.Layer.ShadowOpacity = secondaryMenuSupport.ShadowOpacity;
table.Layer.ShadowRadius = secondaryMenuSupport.ShadowRadius;
table.Layer.ShadowOffset = new SizeF(secondaryMenuSupport.ShadowOffsetDimension, secondaryMenuSupport.ShadowOffsetDimension);
table.BackgroundColor = secondaryMenuSupport.MenuBackgroundColor.ToUIColor();
}
return table;
}
public override void ViewWillDisappear(bool animated)
{
CloseDropDownMenu();
base.ViewWillDisappear(animated);
}
private RectangleF GetPositionForDropDownMenu(float rowHeight, float tableWidth)
{
if ((View?.Bounds != null)
&& (_secondaryItems != null)
&& (_secondaryItems.Count > 0))
{
return new RectangleF(
(float)View.Bounds.Width - tableWidth,
0,
tableWidth,
_secondaryItems.Count() * rowHeight);
}
else
{
return new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
}
}
private void CloseDropDownMenu()
{
if (_table != null)
{
if (_tapGestureRecognizer != null)
{
_transparentView?.RemoveGestureRecognizer(_tapGestureRecognizer);
_tapGestureRecognizer = null;
}
if (View?.Subviews != null)
{
foreach (var subview in View.Subviews)
{
if (subview == _table)
{
_table.RemoveFromSuperview();
break;
}
}
if (_transparentView != null)
{
foreach (var subview in View.Subviews)
{
if (subview == _transparentView)
{
_transparentView.RemoveFromSuperview();
break;
}
}
}
}
_table = null;
_transparentView = null;
}
}
public override void ViewDidLayoutSubviews()
{
base.ViewDidLayoutSubviews();
if (_table != null)
{
if (Element is IAddToolbarItem secondaryMenuSupport)
PositionExistingDropDownMenu(secondaryMenuSupport.RowHeight, secondaryMenuSupport.TableWidth);
}
}
private void PositionExistingDropDownMenu(float rowHeight, float tableWidth)
{
if ((View?.Bounds != null)
&& (_secondaryItems != null)
&& (_secondaryItems.Count > 0)
&& (_table != null))
{
_table.Frame = GetPositionForDropDownMenu(rowHeight, tableWidth);
}
}
}
}
ADDITION:
public class TableSource : UITableViewSource
{
List<ToolbarItem> _tableItems;
string[] _tableItemTexts;
string CellIdentifier = "TableCell";
UIView _tableSuperView = null;
public TableSource(List<ToolbarItem> items, UIView tableSuperView)
{
_tableItems = items;
_tableSuperView = tableSuperView;
_tableItemTexts = items.Select(a => a.Text).ToArray();
}
public override nint RowsInSection(UITableView tableview, nint section)
{
return _tableItemTexts?.Length ?? 0;
}
public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
{
UITableViewCell cell = tableView.DequeueReusableCell(CellIdentifier);
string item = _tableItemTexts[indexPath.Row];
if (cell == null)
{ cell = new UITableViewCell(UITableViewCellStyle.Default, CellIdentifier); }
cell.TextLabel.Text = item;
return cell;
}
public override nfloat GetHeightForRow(UITableView tableView, NSIndexPath indexPath)
{
return 56;
}
public override void RowSelected(UITableView tableView, NSIndexPath indexPath)
{
var command = _tableItems[indexPath.Row].Command;
command.Execute(_tableItems[indexPath.Row].CommandParameter);
tableView.DeselectRow(indexPath, true);
tableView.RemoveFromSuperview();
if (_tableSuperView != null)
{
_tableSuperView.RemoveFromSuperview();
}
}
}
public interface IAddToolbarItem
{
event EventHandler ToolbarItemAdded;
Color CellBackgroundColor { get; }
Color CellTextColor { get; }
Color MenuBackgroundColor { get; }
float RowHeight { get; }
Color ShadowColor { get; }
float ShadowOpacity { get; }
float ShadowRadius { get; }
float ShadowOffsetDimension { get; }
float TableWidth { get; }
}
Here you can download the project that reproduces the issue:
https://github.com/DavidShochet/Public
Well, I still can't reproduce the problem with your updated code. I don't if it is a solution and I just want to clarify my comment here.
In your code, you add the _table to the View:
_table = OpenDropDownMenu(Element as IAddToolbarItem);
Add(_table);
What I want you to have a try is add the _table to _transparentView :
_table = OpenDropDownMenu(Element as IAddToolbarItem);
//Add(_table);
_transparentView.Add(_table);
It would be better if you can provide us a Minimal, Reproducible Example so that I can debug it on my side.
Update:
I found the problem is here, you set the height of table _secondaryItems.Count() * rowHeight) which is longer then the view when the toolbar menu grew longer:
private RectangleF GetPositionForDropDownMenu(float rowHeight, float tableWidth)
{
if ((View?.Bounds != null)
&& (_secondaryItems != null)
&& (_secondaryItems.Count > 0))
{
return new RectangleF(
(float)View.Bounds.Width - tableWidth,
0,
tableWidth,
//here is the cause
_secondaryItems.Count() * rowHeight);
}
else
{
return new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
}
}
Solution: change the height of tablview to (float)View.Bounds.Height:
private RectangleF GetPositionForDropDownMenu(float rowHeight, float tableWidth)
{
if ((View?.Bounds != null)
&& (_secondaryItems != null)
&& (_secondaryItems.Count > 0))
{
return new RectangleF(
(float)View.Bounds.Width - tableWidth,
0,
tableWidth,
(float)View.Bounds.Height);
}
else
{
return new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
}
}
How to make a button in headerbar and do things in window i've tried:
public class headerbar : Gtk.HeaderBar {
construct {
title = "Quiz";
subtitle = "You can solve this!";
show_close_button = true;
Gtk.Button button = new Gtk.Button.with_label ("Quit");
button.get_style_context ().add_class ("suggested-action");
button.set_valign (Gtk.Align.CENTER);
button.clicked.connect (() => {
var label = new Gtk.Label ("Hi");
main.add (label);
label.show ();
});
pack_start (button);
}
}
I got a sample as follow, hope it could help you:
public class AppTitleBar : Gtk.HeaderBar {
private Gtk.Button m_new_tab_button;
private Gtk.Box m_app_title_gui_box;
private Gtk.MenuButton m_main_menu_button;
public weak Workbench workbench { get; construct; }
public AppTitleBar (Workbench workbench) {
Object ( workbench: workbench );
}
construct {
set_show_close_button (true);
this.build_title_bar_layout();
}
public void add_new_tab(Widget title_widget)
{
m_app_title_gui_box.pack_start(title_widget);
title_widget.focus.connect(() => {
this.update_tab_inactive_all();
return true;
});
}
public void update_tab_inactive_all()
{
m_app_title_gui_box.foreach ((widget) => {
widget.set_opacity(0.3);
});
}
public void remove_tab_widget(Widget tab_bar)
{
m_app_title_gui_box.remove(tab_bar);
}
private void build_title_bar_layout()
{
m_main_menu_button = new Gtk.MenuButton ();
var menu_image = new Gtk.Image.from_icon_name ("open-menu-symbolic", Gtk.IconSize.BUTTON);
m_main_menu_button.set_image (menu_image);
m_main_menu_button.tooltip_text = ("Main Menu");
// create title bar box
m_app_title_gui_box = new Box(Orientation.HORIZONTAL, 2);
// create add new tab button
m_new_tab_button = new Gtk.Button.from_icon_name("list-add", Gtk.IconSize.BUTTON);
m_new_tab_button.get_style_context ().add_class ("back-button");
m_new_tab_button.valign = Gtk.Align.CENTER;
m_new_tab_button.always_show_image = true;
m_new_tab_button.can_focus = false;
m_new_tab_button.action_name = WorkbenchActions.ACTION_PREFIX + WorkbenchActions.ACTION_TAB_NEW;
m_new_tab_button.has_tooltip = true;
m_new_tab_button.tooltip_text = "Open a new connection (Ctrl+N)";
this.pack_end(m_main_menu_button);
this.pack_start(m_app_title_gui_box);
this.pack_start(m_new_tab_button);
}
}
I'm trying to make an autocomplete combobox in javafx and im almost done but every time i try to submit and clear selection so the user can choose another choice , all the items get hidden except the one he chose last time
// this the class that i used turn a normal combobox to an autocomplete one
public class AutoCompleteComboBoxListener<T> implements EventHandler<KeyEvent> {
private ComboBox<T> comboBox;
private ObservableList<T> data;
private boolean moveCaretToPos = false;
private int caretPos;
public AutoCompleteComboBoxListener(final ComboBox<T> comboBox) {
this.comboBox = comboBox;
data = comboBox.getItems();
this.comboBox.setEditable(true);
this.comboBox.setOnKeyReleased(AutoCompleteComboBoxListener.this);
this.showOnFocus();
}
#Override
public void handle(KeyEvent event) {
if(event.getCode() == KeyCode.UP) {
caretPos = -1;
moveCaret(comboBox.getEditor().getText().length());
return;
} else if(event.getCode() == KeyCode.DOWN) {
if(!comboBox.isShowing())
comboBox.show();
caretPos = -1;
moveCaret(comboBox.getEditor().getText().length());
return;
}
if (event.getCode() == KeyCode.RIGHT || event.getCode() == KeyCode.LEFT
|| event.isControlDown() || event.getCode() == KeyCode.HOME
|| event.getCode() == KeyCode.END || event.getCode() == KeyCode.TAB) {
return;
}
System.out.println(caretPos);
comboBox.hide();
if(event.getCode() == KeyCode.BACK_SPACE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
} else if(event.getCode() == KeyCode.DELETE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
}
ObservableList<T> list = FXCollections.observableArrayList();
for (int i=0; i<data.size(); i++) {
if(data.get(i).toString().toLowerCase().startsWith(
AutoCompleteComboBoxListener.this.comboBox
.getEditor().getText().toLowerCase())) {
list.add(data.get(i));
}
}
String t = comboBox.getEditor().getText();
comboBox.setItems(list);
comboBox.getEditor().setText(t);
if(!moveCaretToPos) {
caretPos = -1;
}
moveCaret(t.length());
if(!list.isEmpty()) {
comboBox.show();
String editorText;
editorText=comboBox.getEditor().getText();
list.sort((a, b) -> Integer.compare(a.toString().length(), b.toString().length()));
comboBox.getSelectionModel().selectFirst();
comboBox.getEditor().setText(editorText);
moveCaret(comboBox.getSelectionModel().getSelectedItem().toString().length());
}
if (event.getCode()==KeyCode.ENTER){
comboBox.hide();
comboBox.getEditor().setText(comboBox.getSelectionModel().getSelectedItem().toString());
}
}
private void moveCaret(int textLength) {
if(caretPos == -1)
comboBox.getEditor().positionCaret(textLength);
else
comboBox.getEditor().positionCaret(caretPos);
moveCaretToPos = false;
}
public void showOnFocus(){
this.comboBox.focusedProperty().addListener((obs, oldVal, newVal) ->
this.comboBox.show());
}
}
// and this is what the submit button does the the comboboxes
button.setOnAction(e-> {
combo1.getSelectionModel().clearSelection();
combo1.getSelectionModel().clearSelection();
});
I've read the many posts on the forum and on StackOverflow and other places on making custom keyboards, but have not found an approach that will work for my Xamarin forms cross-platform project. It is programmatically generated.
For example, I built this keyboard that was recommended in several places:
I try to integrate this into my Xamarin forms app but not able to do this
https://github.com/Vaikesh/CustomKeyboard/blob/master/CustomKeyboard/Activity1.cs
It works fine as a standalone
I want Hebrew language keyboard in my application Like this
I would appreciate any help.
Thank you.
Custom Keyboard in Xamarin forms
You could create a PageRenderer and use native .axml layout file to create the custom Keyboard.
For example, my KeyboardPageRenderer :
[assembly: ExportRenderer(typeof(MyKeyboardPage), typeof(KeyboardPageRenderer))]
...
public class KeyboardPageRenderer : PageRenderer
{
public CustomKeyboardView mKeyboardView;
public EditText mTargetView;
public Android.InputMethodServices.Keyboard mKeyboard;
Activity activity;
global::Android.Views.View view;
protected override void OnElementChanged(ElementChangedEventArgs<Page> e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
try
{
SetupUserInterface();
SetupEventHandlers();
this.AddView(view);
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(#" ERROR: ", ex.Message);
}
}
void SetupUserInterface()
{
activity = this.Context as Activity;
view = activity.LayoutInflater.Inflate(Resource.Layout.activity_keyboard, this, false);
mKeyboard = new Android.InputMethodServices.Keyboard(Context, Resource.Xml.keyboard);
mTargetView = view.FindViewById<EditText>(Resource.Id.target);
mKeyboardView = view.FindViewById<CustomKeyboardView>(Resource.Id.keyboard_view);
mKeyboardView.Keyboard = mKeyboard;
}
void SetupEventHandlers()
{
mTargetView.Touch += (sender, e) =>
{
ShowKeyboardWithAnimation();
e.Handled = false;
mTargetView.ShowSoftInputOnFocus = false;
};
mKeyboardView.Key += async (sender, e) =>
{
long eventTime = JavaSystem.CurrentTimeMillis();
KeyEvent ev = new KeyEvent(eventTime, eventTime, KeyEventActions.Down, e.PrimaryCode, 0, 0, 0, 0, KeyEventFlags.SoftKeyboard | KeyEventFlags.KeepTouchMode);
DispatchKeyEvent(ev);
await Task.Delay(1);
mTargetView.RequestFocus();
};
}
public void ShowKeyboardWithAnimation()
{
if (mKeyboardView.Visibility == ViewStates.Gone)
{
mKeyboardView.Visibility = ViewStates.Visible;
Android.Views.Animations.Animation animation = AnimationUtils.LoadAnimation(
Context,
Resource.Animation.slide_in_bottom
);
mKeyboardView.ShowWithAnimation(animation);
}
}
protected override void OnLayout(bool changed, int l, int t, int r, int b)
{
base.OnLayout(changed, l, t, r, b);
var msw = MeasureSpec.MakeMeasureSpec(r - l, MeasureSpecMode.Exactly);
var msh = MeasureSpec.MakeMeasureSpec(b - t, MeasureSpecMode.Exactly);
view.Measure(msw, msh);
view.Layout(0, 0, r - l, b - t);
}
}
Effect:
.
I wrote up a simple demo about how to implement this feature, you can see it in this GitHub Repository.
I don't know Hebrew, if you need to achieve the effect like the picture you have post, you need custom the layout in keyboard.xml file.
Update :
I am done iOS portion using entry render so only try to do for android portion
I write a EntryRenderer to implement this feature, effect like this, hope this can help you.
public class MyEntry2Renderer : ViewRenderer<MyEntry, TextInputLayout>,
ITextWatcher,
TextView.IOnEditorActionListener
{
private bool _hasFocus;
public CustomKeyboardView mKeyboardView;
public Android.InputMethodServices.Keyboard mKeyboard;
ViewGroup activityRootView;
protected EditText EditText => Control.EditText;
public bool OnEditorAction(TextView v, ImeAction actionId, KeyEvent e)
{
if ((actionId == ImeAction.Done) || ((actionId == ImeAction.ImeNull) && (e.KeyCode == Keycode.Enter)))
{
Control.ClearFocus();
//HideKeyboard();
((IEntryController)Element).SendCompleted();
}
return true;
}
public virtual void AfterTextChanged(IEditable s)
{
}
public virtual void BeforeTextChanged(ICharSequence s, int start, int count, int after)
{
}
public virtual void OnTextChanged(ICharSequence s, int start, int before, int count)
{
if (string.IsNullOrWhiteSpace(Element.Text) && (s.Length() == 0)) return;
((IElementController)Element).SetValueFromRenderer(Entry.TextProperty, s.ToString());
}
protected override TextInputLayout CreateNativeControl()
{
var textInputLayout = new TextInputLayout(Context);
var editText = new EditText(Context);
#region Add the custom Keyboard in your Page
var activity = Forms.Context as Activity;
var rootView = activity.Window.DecorView.FindViewById(Android.Resource.Id.Content);
activity.Window.SetSoftInputMode(SoftInput.StateAlwaysHidden);
activityRootView = ((ViewGroup)rootView).GetChildAt(0) as ViewGroup;
mKeyboardView = new CustomKeyboardView(Forms.Context, null);
Android.Widget.RelativeLayout.LayoutParams layoutParams =
new Android.Widget.RelativeLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.WrapContent); // or wrap_content
layoutParams.AddRule(LayoutRules.AlignParentBottom);
activityRootView.AddView(mKeyboardView, layoutParams);
#endregion
//First open the current page, hide the Keyboard
mKeyboardView.Visibility = ViewStates.Gone;
//Use the custom Keyboard
mKeyboard = new Android.InputMethodServices.Keyboard(Context, Resource.Xml.keyboard2);
mKeyboardView.Keyboard = mKeyboard;
mKeyboardView.Key += async (sender, e) =>
{
long eventTime = JavaSystem.CurrentTimeMillis();
KeyEvent ev = new KeyEvent(eventTime, eventTime, KeyEventActions.Down, e.PrimaryCode, 0, 0, 0, 0, KeyEventFlags.SoftKeyboard | KeyEventFlags.KeepTouchMode);
DispatchKeyEvent(ev);
await Task.Delay(1);
};
textInputLayout.AddView(editText);
return textInputLayout;
}
protected override void OnElementChanged(ElementChangedEventArgs<MyEntry> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
if (Control != null)
EditText.FocusChange -= ControlOnFocusChange;
if (e.NewElement != null)
{
var ctrl = CreateNativeControl();
SetNativeControl(ctrl);
EditText.ShowSoftInputOnFocus = false;
EditText.FocusChange += ControlOnFocusChange;
}
}
private void ControlOnFocusChange(object sender, FocusChangeEventArgs args)
{
_hasFocus = args.HasFocus;
if (_hasFocus)
{
EditText.Post(() =>
{
EditText.RequestFocus();
ShowKeyboardWithAnimation();
});
}
else
{
//Hide the Keyboard
mKeyboardView.Visibility = ViewStates.Gone;
}
}
public void ShowKeyboardWithAnimation()
{
if (mKeyboardView.Visibility == ViewStates.Gone)
{
mKeyboardView.Visibility = ViewStates.Visible;
Android.Views.Animations.Animation animation = AnimationUtils.LoadAnimation(
Context,
Resource.Animation.slide_in_bottom
);
mKeyboardView.ShowWithAnimation(animation);
}
}
}
Am calling my camera function as separate fragment during first 2 times of calling the class camera is opening but if am calling the class third time app is crashing.
private int findFrontFacingCamera() {
int cameraId = 0;
// Search for the front facing camera
int numberOfCameras = Camera.getNumberOfCameras();
for (int i = 0; i < numberOfCameras; i++) {
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(i, info);
if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
cameraId = i;
cameraFront = true;
break;
}
}
return cameraId;
}
private int findBackFacingCamera() {
int cameraId = -1;
//Search for the back facing camera
//get the number of cameras
int numberOfCameras = Camera.getNumberOfCameras();
//for every camera check
for (int i = 0; i < numberOfCameras; i++) {
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(i, info);
if (info.facing == CameraInfo.CAMERA_FACING_BACK) {
cameraId = i;
cameraFront = false;
break;
}
}
return cameraId;
}
public void onResume() {
super.onResume();
if (!hasCamera(myContext)) {
Toast toast = Toast.makeText(myContext, "Sorry, your phone does not have a camera!", Toast.LENGTH_LONG);
toast.show();
finish();
}
if (mCamera == null) {
//if the front facing camera does not exist
if (findFrontFacingCamera() < 0) {
Toast.makeText(getActivity().getApplicationContext(), "No front facing camera found.", Toast.LENGTH_LONG).show();
switchCamera.setVisibility(View.GONE);
}
mCamera = Camera.open(findFrontFacingCamera());
mPicture = getPictureCallback();
mPreview.refreshCamera(mCamera);
}
}
logcat
01-19 10:56:15.164 11477-11477/com.example.siva.prep E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.siva.prep, PID: 11477
java.lang.RuntimeException: Fail to connect to camera service
at android.hardware.Camera.native_setup(Native Method)
at android.hardware.Camera.<init>(Camera.java:393)
at android.hardware.Camera.open(Camera.java:347)
at com.example.siva.prep.Selfie.onResume(Selfie.java:146)
It's showing error on the following line in "onResume()" method:
mCamera = Camera.open(findFrontFacingCamera());
Here is the full my code am using:
public class Selfie extends Fragment implements OnClickListener {
private Camera mCamera;
private CameraPreview mPreview;
private PictureCallback mPicture;
private Button capture, switchCamera;
private Context myContext;
private LinearLayout cameraPreview;
private boolean cameraFront = false;
Bitmap bmp;
ImageView iv;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_selfie, container, false);
// getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
iv=(ImageView) view.findViewById(R.id.image);
myContext = getActivity().getApplicationContext();
getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
cameraPreview = (LinearLayout) view.findViewById(R.id.camera_preview);
mPreview = new CameraPreview(myContext, mCamera);
cameraPreview.addView(mPreview);
ImageView capture = (ImageView) view.findViewById(R.id.button_capture);
capture.setOnClickListener(captrureListener);
ImageView switchCamera = (ImageView) view.findViewById(R.id.button_ChangeCamera);
switchCamera.setOnClickListener(switchCameraListener);
ImageView button1 = (ImageView) view.findViewById(R.id.back);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
FreeFragment fragment2 = new FreeFragment();
FragmentManager fragmentManager = getFragmentManager();
android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container, fragment2);
fragmentTransaction.commit();
}
});
getSupportActionBar().hide();
return view;
}
private ActionBar getSupportActionBar() {
return ((AppCompatActivity) getActivity()).getSupportActionBar();
}
#Override
public void onClick(View v) {
}
private int findFrontFacingCamera() {
int cameraId = 0;
// Search for the front facing camera
int numberOfCameras = Camera.getNumberOfCameras();
for (int i = 0; i < numberOfCameras; i++) {
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(i, info);
if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
cameraId = i;
cameraFront = true;
break;
}
}
return cameraId;
}
private int findBackFacingCamera() {
int cameraId = -1;
//Search for the back facing camera
//get the number of cameras
int numberOfCameras = Camera.getNumberOfCameras();
//for every camera check
for (int i = 0; i < numberOfCameras; i++) {
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(i, info);
if (info.facing == CameraInfo.CAMERA_FACING_BACK) {
cameraId = i;
cameraFront = false;
break;
}
}
return cameraId;
}
public void onResume() {
super.onResume();
if (!hasCamera(myContext)) {
Toast toast = Toast.makeText(myContext, "Sorry, your phone does not have a camera!", Toast.LENGTH_LONG);
toast.show();
finish();
}
if (mCamera == null) {
//if the front facing camera does not exist
if (findFrontFacingCamera() < 0) {
Toast.makeText(getActivity().getApplicationContext(), "No front facing camera found.", Toast.LENGTH_LONG).show();
switchCamera.setVisibility(View.GONE);
}
mCamera = Camera.open(findFrontFacingCamera());
mPicture = getPictureCallback();
mPreview.refreshCamera(mCamera);
}
}
private void finish() {
}
OnClickListener switchCameraListener = new OnClickListener() {
#Override
public void onClick(View v) {
//get the number of cameras
int camerasNumber = Camera.getNumberOfCameras();
if (camerasNumber >= 1) {
//release the old camera instance
//switch camera, from the front and the back and vice versa
releaseCamera();
chooseCamera();
} else {
Toast toast = Toast.makeText(myContext, "Sorry, your phone has only one camera!", Toast.LENGTH_LONG);
toast.show();
}
}
};
public void chooseCamera() {
// if the camera preview is the front
if (cameraFront) {
int cameraId = findBackFacingCamera();
if (cameraId <= 0) {
//open the backFacingCamera
//set a picture callback
//refresh the preview
mCamera = Camera.open(cameraId);
mPicture = getPictureCallback();
mPreview.refreshCamera(mCamera);
}
} else
{
int cameraId = findFrontFacingCamera();
if (cameraId >= 0) {
//open the backFacingCamera
//set a picture callback
//refresh the preview
mCamera = Camera.open(cameraId);
mPicture = getPictureCallback();
mPreview.refreshCamera(mCamera);
}
}
}
#Override
public void onPause() {
super.onPause();
//when on Pause, release camera in order to be used from other applications
releaseCamera();
}
private boolean hasCamera(Context context) {
//check if the device has camera
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
return true;
} else {
return false;
}
}
private PictureCallback getPictureCallback() {
PictureCallback picture = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
//make a new picture file
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
return;
}
try {
//write the file
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
Toast toast = Toast.makeText(myContext, "Picture saved: " + pictureFile.getName(), Toast.LENGTH_LONG);
iv.setImageURI(Uri.fromFile(pictureFile));
//Intent intent = new Intent(AndroidCameraExample.this,Fina.class);
String stringUri;
stringUri = pictureFile.toString();
//intent.putExtra("imagePath", stringUri);
//startActivity(intent);
FreeFragment ldf = new FreeFragment ();
Bundle args = new Bundle();
args.putString("Image", stringUri);
ldf.setArguments(args);
Log.d("Passing image", String.valueOf(args));
getFragmentManager().beginTransaction().add(R.id.container, ldf).commit();
toast.show();
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
//refresh camera to continue preview
mPreview.refreshCamera(mCamera);
}
};
return picture;
}
//make picture and save to a folder
public static File getOutputMediaFile() {
//make a new file directory inside the "sdcard" folder
File mediaStorageDir = new File("/sdcard/", "JCG Camera");
//if this "JCGCamera folder does not exist
if (!mediaStorageDir.exists()) {
//if you cannot make this folder return
if (!mediaStorageDir.mkdirs()) {
return null;
}
}
//take the current timeStamp
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
//and make a media file:
mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg");
return mediaFile;
}
OnClickListener captrureListener = new OnClickListener() {
#Override
public void onClick(View v) {
mCamera.takePicture(null, null, mPicture);
}
};
private void releaseCamera() {
// stop and release camera
if (mCamera != null) {
mCamera.release();
mCamera = null;
}
}
}
Irrespective of the reason, not obtaining Camera handle is a case that needs to be handled with proper error handling. In the current case in your Pause handler, is the Camera instance being released ? Check for proper usage at http://developer.android.com/training/basics/activity-lifecycle/pausing.html