Here is my layout xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="男" />
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女" />
</RadioGroup>
</LinearLayout>
the result is that both radiobutton have been checked
how to fix it?
and if I change the LinearLayout to TableLayout,waht other questions should I notice?
I finally get it after many tests!!
The conclusion is: In a RadioGroup,if a RadioButton is set checked="true",you
must give the RadioButton an id (android:id="#+id/name"); If not, the status will not change to disselected with the "checked radiobutton" when you select other radiobutton.
So,don't forget add an id to the radiobutton!
but I don't know how the source code works?
Related
I am new to xamarin. Is it possible to load a shared UI control in an xml file, if yes, how? I am open to better idea.
Below is a static loading via include, where parent.axml statically load child.xml.
<include
android:id="#+id/child"
layout="#layout/child"
android:layout_below="#id/toolbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
parent.axml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<include
android:id="#+id/child"
layout="#layout/child"
android:layout_below="#id/toolbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/parent_layout"
android:layout_below="#id/child">
<TextView
android:id="#+id/parent_text"
android:layout_margin="16dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Click to go to the moon!"
android:textAppearance="?android:attr/textAppearanceSmall"
android:singleLine="true" />
</LinearLayout>
</LinearLayout>
Child.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/child_text"
android:layout_margin="16dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="You made it!"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
The idea is that it can achieve share of UI controls. In this case, parent.axml loads child.xml into its place holder based on condition.
You can use LayoutInflater to inflate layouts and auto-attach them to the parent (or not):
var linearLayout = LayoutInflater.Inflate(Resource.Layout.Child, parent, true);
var textView = linearLayout.FindViewById<TextView>(Resource.Id.child_text);
textView.Text = "Inflated and attached to Parent";
Also depending upon your use-case, using a self-contained Fragment and adding that to your "parent" might be better a better solution.
I have created a dialog fragment in Xamarin. My only issue is that this fragment shows a grey part on it. And i can't figure out what causes the grey part to appear. Do you guys perhaps know the possible cause ?
I'm using this code to display this dialog :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:focusableInTouchMode="true">
<View
android:id="#+id/makedialogfullscreenChooseSoundTrack"
android:layout_width="wrap_content"
android:layout_height="1dp"
android:layout_gravity="fill_horizontal"
/>
<RelativeLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#e1effa" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Choose Sound Track"
android:textSize="20dp"
android:textColor="#673ab7"
android:padding="15dp"
android:layout_marginRight="25dp"
/>
<ImageView
android:id="#+id/imgCloseSoundDialog"
android:layout_width="33dp"
android:layout_height="33dp"
android:src="#drawable/close_icon"
android:layout_marginBottom="15.5dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:layout_centerVertical="true" />
</RelativeLayout>
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_width="wrap_content" >
<GridView
android:id="#+id/gvSoundFiles"
android:layout_width="fill_parent"
android:layout_height="400dp"
android:gravity="center"
android:verticalSpacing="5dp"
android:drawSelectorOnTop="true"
android:stretchMode="columnWidth" />
</LinearLayout>
</LinearLayout>
I solved the issue by adding this line in OnCreateView(..) method :
Dialog.Window.RequestFeature(WindowFeatures.NoTitle);
by default the DialogFragment comes with a theme with a title bar, to solve this put the code below in the constructor
SetStyle(DialogFragmentStyle.NoTitle, 0);
I have a problem running with the ImageButton. It does not show the image of the drawable folder, it shows a small gray rectangle.
Demomento I put only the code of the layout of the activity because by clicking on the rectangle that comes out if it does the action.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="mdl.acp.Menu">
<Spinner
android:id="#+id/numeroGru"
android:layout_width="240dp"
android:layout_height="25dp"
android:layout_alignStart="#+id/textView6"
android:layout_below="#+id/textView6"
android:layout_marginLeft="35dp"
android:layout_marginTop="25dp"
tools:layout_editor_absoluteX="82dp"
tools:layout_editor_absoluteY="161dp" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignStart="#+id/textView6"
android:layout_below="#+id/numeroGru"
android:layout_marginTop="46dp"
android:text="#string/seleccionaDtAct"
android:textColor="#color/colorPrimary"
android:textSize="18sp"
android:textStyle="bold"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="251dp" />
<Spinner
android:id="#+id/deporte"
android:layout_width="240dp"
android:layout_height="25dp"
android:layout_alignStart="#+id/textView7"
android:layout_below="#+id/textView7"
android:layout_marginLeft="35dp"
android:layout_marginTop="25dp"
tools:layout_editor_absoluteX="25dp"
tools:layout_editor_absoluteY="338dp"/>
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="#+id/relativeLayout"
android:layout_marginStart="28dp"
android:layout_marginTop="23dp"
android:text="#string/seleccionaAct"
android:textColor="#color/colorPrimary"
android:textSize="18sp"
android:textStyle="bold"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="84dp" />
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="#color/colorPrimaryDark"
android:layout_alignParentEnd="true">
<TextView
android:id="#+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="#string/nuevoAct"
android:textAlignment="center"
android:textColor="#android:color/white"
android:textSize="30sp"
android:textStyle="bold"
tools:text="#string/nuevoAct" />
</RelativeLayout>
<ImageButton
android:id="#+id/imageButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="40dp"
android:elevation="0dp"
app:srcCompat="#drawable/btnsig" />
</RelativeLayout>
The image is a png file whose dimesiones are 80x80 (32 bit color) 5.1k.
I do not know if the problem will have to do with some attribute of the layout of width or height that has as value match parent.
Thanks.
Try this:
Set android:src="#drawable/btnsig" instead of app:srcCompat="#drawable/btnsig".
This will work, just tested.
I'm trying to animate a layout (height) placed under the toolbar and inside an AppbarLayout. I have tried several approaches to this: one of them is using ValueAnimator.ofInt and using this int to set the layout's height. This, however, is kind of choppy. According to some posts I've read, it is because requestLayout() is called in each iteration and that's an expensive operation. Almost every other option I've seen requires requestLayout() to be called. Somewhat old devices will not perform well in that case.
The other approach, which apparently is the most efficient, is to simply declare animateLayoutChanges = true in the parent layout (the AppbarLayout in this case) and simply change the height in code. This does work, but it produces and weird jump, as if the layout instantly and very breifly goes to it's final height, collapses again, and then starts animating normally. The same happens when collapsing.
In the activity, I'm simply calling setVisibility(View.VISIBLE) to expand and newTaskLayout.setVisibility(View.GONE) to collapse. I've also tried setting height to 0 and then making the view GONE to collapse, and setting height to wrap content and then making the view VISIBLE to expand, but the result is the same.
Is there any reason for this and way to avoid it? Or is there a better way to do it?
Heres the XML: (The view being animated is the COnstraintLayout under the toolbar)
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.adrapps.mytasks.Views.TaskListActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:orientation="vertical"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:title="App"
app:popupTheme="#style/AppTheme.PopupOverlay">
<ProgressBar
android:id="#+id/progressBar"
android:layout_width="30dp"
android:layout_height="30dp"
android:paddingLeft="8dp"
android:paddingStart="8dp"
android:visibility="gone" />
</android.support.v7.widget.Toolbar>
<android.support.constraint.ConstraintLayout
android:id="#+id/new_task_layout"
android:layout_width="match_parent"
android:layout_height="164dp"
android:paddingBottom="16dp"
android:paddingEnd="16dp"
android:paddingStart="16dp"
android:visibility="visible">
<ImageView
android:id="#+id/title_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="0dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="0dp"
android:src="#drawable/ic_label"
app:layout_constraintBottom_toBottomOf="#+id/title_edit_text"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/title_edit_text"
tools:layout_editor_absoluteX="16dp" />
<ImageView
android:id="#+id/date_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="24dp"
android:layout_marginLeft="0dp"
android:layout_marginRight="24dp"
android:layout_marginTop="8dp"
android:src="#drawable/ic_date"
app:layout_constraintBottom_toBottomOf="#+id/date_edit_text"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="#+id/date_edit_text"
app:layout_constraintVertical_bias="0.333" />
<ImageView
android:id="#+id/notification_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginLeft="0dp"
android:layout_marginRight="16dp"
android:layout_marginTop="28dp"
android:src="#drawable/ic_notifications_none_black_24dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="#+id/date_icon"
app:layout_constraintTop_toBottomOf="#+id/date_icon" />
<EditText
android:id="#+id/title_edit_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:hint="#string/task_title_hint"
android:textAppearance="#style/TextAppearance.AppCompat.Small"
app:layout_constraintLeft_toRightOf="#+id/title_icon"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toEndOf="#id/title_icon"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/date_edit_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginTop="12dp"
android:hint="#string/task_due_date"
android:textAppearance="#style/TextAppearance.AppCompat.Small"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="#+id/date_icon"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toEndOf="#id/date_icon"
app:layout_constraintTop_toBottomOf="#+id/title_edit_text" />
<android.support.v7.widget.AppCompatSpinner
android:id="#+id/notification_spinner"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginStart="6dp"
android:entries="#array/notification_options"
app:layout_constraintBottom_toBottomOf="#+id/notification_icon"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toRightOf="#+id/notification_icon"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="#+id/notification_icon" />
</android.support.constraint.ConstraintLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_add_black_24dp" />
<include layout="#layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
I try to hide the toolbar during scroll but then this happens! What do I have to do?
This is the layout code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/SimpleTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/SimpleTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin" />
</android.support.design.widget.CoordinatorLayout>
The view container has following behavior:
app:layout_behavior="#string/appbar_scrolling_view_behavior"
Screenshots:
Before scroll
After scroll
There is something with 'fitsSystemWindows'
Make it false in coordinatorLayout and true in AppBarLayout