I have layount who include one layout, duplicate two time ("include"):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorButtonNiebieski">
<!-- LAYOUT GRACZ (A) -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1.0"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.45"
android:scaleY="-1"
android:scaleX="-1"
android:paddingBottom="10dp">
<include
android:id="#+id/lay1"
layout="#layout/layout_pojedynek_duplikat" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.05"
android:gravity="center"
android:scaleY="-1"
android:scaleX="-1">
<TextView
android:id="#+id/txt_gracz_A_liczba_punktow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:textSize="30dp"
android:textColor="#color/colorWhite"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.05"
android:gravity="center">
<TextView
android:id="#+id/txt_gracz_B_liczba_punktow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="7"
android:textSize="30dp"
android:textColor="#color/colorWhite"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.45"
android:paddingBottom="10dp">
<include
android:id="#+id/lay2"
layout="#layout/layout_pojedynek_duplikat" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
layout_pojedynek_duplikat.xml
<?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:weightSum="1.0">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.0"
android:weightSum="1.0"
android:background="#00ff0000"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.3"
android:gravity="center">
<TextView
android:id="#+id/txt_gracz_A_i_B_nazwa"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="POLSKA"
android:textSize="40dp"
android:textColor="#color/colorWhite"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.7"
android:gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1.0">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1.0"
android:layout_weight="0.5"
android:orientation="horizontal">
<ImageView
android:id="#+id/img_pojedynek_wariant_A"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:src="#drawable/argentyna"
android:padding="5dp"
android:adjustViewBounds="true"/>
<ImageView
android:id="#+id/img_pojedynek_wariant_B"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:src="#drawable/kambodza"
android:padding="5dp"
android:adjustViewBounds="true"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1.0"
android:layout_weight="0.5"
android:orientation="horizontal">
<ImageView
android:id="#+id/img_pojedynek_wariant_C"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:src="#drawable/watykan"
android:padding="5dp"
android:adjustViewBounds="true"/>
<ImageView
android:id="#+id/img_pojedynek_wariant_D"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:src="#drawable/polska"
android:padding="5dp"
android:adjustViewBounds="true"/>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
In java file I try set font for txt_gracz_A_i_B_nazwa text field:
TextView txt_gracz_A_i_B_nazwa = (TextView) findViewById(R.id.txt_gracz_A_i_B_nazwa);
txt_gracz_A_i_B_nazwa.setTypeface(myFontBold);
But this set font for only one view:
How can I fix this problem?
DO that for every view. Or create a new View class that's a child of TextView and sets the font, and use that instead of TextView.
Yes, Android's font handling sucks.
When you call Activity.findViewById(), the system will traverse your view hierarchy starting from the root until it finds a view with the given id. In other words, Activity.findViewById() will return the first view with that id in your layout. It will not return all views with that id.
For this reason, it is generally advised to not re-use ids within a single layout. However, this advice is often not practical, and you shouldn't feel bad about your current layout. But it does mean that you will need to call TextView.setTypeface() twice, and that you will need some way to access the second view with the id txt_gracz_A_i_B_nazwa.
You can do this by limiting the scope you search with findViewById(). Instead of using Activity.findViewById(), instead use View.findViewById(). So you could write something like this:
View lay1 = findViewById(R.id.lay1);
TextView txt1 = (TextView) lay1.findViewById(R.id.txt_gracz_A_i_B_nazwa);
txt1.setTypeface(myFontBold);
View lay2 = findViewById(R.id.lay2);
TextView txt2 = (TextView) lay2.findViewById(R.id.txt_gracz_A_i_B_nazwa);
txt2.setTypeface(myFontBold);
Looks like a small logic flaw. The problem with reusing the same layout two times, is that you have the identical IDs although they represent two entirely different UI elements.
lay1.findViewById(your_text_field_id).setFontType
lay2.findViewById(your_text_field_id).setFontType
Should fix you. You can't use generic findViewById as it will grab the first one and use it. Hope that helps.
Related
Background
I have a header and footer (LinearLayout) with a RecyclerView between them.
The problem
I need that the footer stay fixed at the bottom of the screen and the RecyclerView fills the empty space
What I've tried
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
tools:context="br.com.sigane.coletordifal.activity.EnderecamentoActivity">
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Header" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Footer" />
</LinearLayout>
</LinearLayout>
Also tried to use ConstraintLayout, but without success
Try this
Add android:layout_height="0dp" and android:layout_weight="1" to the RecyclerView
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Header" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:scrollbars="vertical" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Footer" />
</LinearLayout>
</LinearLayout>
I don't think you need to have separate linear layouts. I think just one is enough. Just set your weights like this for your recyclerview and footer.
<android.support.v7.widget.RecyclerView
android:id="#+id/produtos_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:scrollbars="vertical" />
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:text="Footer" />
I recommend using the constraint layout, it is a FrameLayout on steroids. If you are using android studio 3.2, right-clicking on the root element in the design view shows a menu with the option "convert to constraintlayout"
The reason you do not want to nest layouts like this, Each nested element results in additional measure passes, nested layouts are messy and harder to inflate than flat layouts.
Highly recommend spending an hour or so reading about the constraint layout and how to use it. You will not regret it, helped my improve productivity by 2x.
Hope this is helpful.
I am creating my layout entirely in XML. I wish to show a ListView and always have a button at the bottom of the screen like in the default FullScreenActivity. However, the issue is that the button that is at the bottom is also appearing at the top of the screen.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff000000"
tools:context=".ChannelNameActivity">
<ListView
android:id="#+id/channelListView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:keepScreenOn="true"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#color/black_overlay"
android:orientation="horizontal"
tools:ignore="UselessParent">
<Button
android:id="#+id/dummy_button"
style="?metaButtonBarButtonStyle"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="#string/dummy_button" />
</LinearLayout>
</RelativeLayout>
(Code note from OP's previous question: ArrayAdapter unable to update contents)
Because in your onCreate() you are adding Activity Layout as Header View to your ListView which is unnecessary (not required).
So Just remove below code lines from onCreate()
final View contentView = (View)getLayoutInflater().inflate(R.layout.activity_channelname, null);
channelListView.addHeaderView(contentView);
Here you have to use android:layout_above="#+id/lnlLayout" attribute in ListView and android:alignParentBottom="true" on LinearLayout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff000000"
tools:context=".ChannelNameActivity">
<ListView
android:id="#+id/channelListView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/lnlLayout"
android:keepScreenOn="true"/>
<LinearLayout
android:id="#+id/lnlLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#color/black_overlay"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
tools:ignore="UselessParent">
<Button
android:id="#+id/dummy_button"
style="?metaButtonBarButtonStyle"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="#string/dummy_button" />
</LinearLayout>
</RelativeLayout>
I think to do a overlay of layout, this is the code that I have now.:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white">
<ScrollView
android:id="#+id/content_scroll"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/container_main"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/text_search"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:orientation="horizontal"
android:background="#color/white"
android:weightSum="2">
<EditText
android:id="#+id/input_search"
android:layout_width="0dp"
android:layout_height="match_parent"
android:hint="#string/placeholder_search"
android:layout_margin="5dp"
android:layout_weight="1.5"
android:inputType="text"
android:padding="5dp"
android:drawableRight="#drawable/ic_search"
android:background="#drawable/style_input"
android:imeOptions="actionSend"/>
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:src="#drawable/img_header" />
</LinearLayout>
<LinearLayout
android:id="#+id/list_search"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="-5dp"
android:layout_gravity="top"
android:orientation="vertical">
<TextView
android:id="#+id/no_result"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:visibility="gone"
android:text="#string/no_result"
android:gravity="center_horizontal|center_vertical|center"/>
<ListView
android:id="#+id/search_categorias"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></ListView>
</LinearLayout>
<LinearLayout
android:id="#+id/container_buttons_tall"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:background="#drawable/style_header">
<TextView
android:id="#+id/otherlayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="Other Layout" />
</LinearLayout>
<LinearLayout
android:id="#+id/container_buttons_tall1"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:background="#drawable/style_header"
android:weightSum="3">
<TextView
android:id="#+id/otherlayout2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="Other Layout 2" />
</LinearLayout>
<LinearLayout
android:id="#+id/container_buttons_tall2"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:background="#drawable/style_header"">
<TextView
android:id="#+id/otherlayoutn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="Other Layout N" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
I want to overlay the next layouts after of the ID "#+id/text_search" with the rest, this list is the a search and show suggestions to users.
This list will overlay about others layouts that I define below, if the user want to make a search.
Are there some way easy of overlay? Or tutorial that can help me. I try to use RelativeLayout, but I didn't get to make it well.
Thanks in advance.
you can use the Relative Layout for this, but you need to specify the relations (thats why relative => relative to what)
means you have to set the postion of your +id/text_search relative to parent.
and also the elements which should do the overlayer have to be relative to parent.
todo so relative Layout uses layout properties like: below=(ID) toRightOf(ID) and so on.
you can start reading about it here:
http://developer.android.com/guide/topics/ui/layout/relative.html
but for the search you want todo, there is already a good advice howto it: so i recommend reading this article:
http://developer.android.com/guide/topics/search/search-dialog.html
and doing it right, like all the others apps do it, your customers will be satisfied then (don't need to learn something new )
In my app I have several fragments with different ListViews, but for all them I want to use the same empty view, so I created a separate layout with the empty view and added it to the other layouts using
<include
android:id="#+id/empty"
layout="#layout/empty_view"/>
Everything works as expected but now I'm trying to make that view clickable so I can reload ListView when the user taps on the empty view, however I can't make it work. Any idea on how to do it?
This is what I have tried so far:
(empty_view.xml)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:gravity="center">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="center"
android:src="#drawable/error_icon"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#929292"
android:textSize="24sp"
android:text="#string/empty_list_error"/>
</LinearLayout>
fragment_list.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true">
<Spinner
android:id="#+id/spinner_filter"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="#dimen/activity_vertical_margin"
android:layout_marginLeft="#dimen/activity_vertical_margin"
android:layout_gravity="center_horizontal"
android:visibility="gone"/>
<include
android:id="#+id/empty"
layout="#layout/empty_view"/>
<ProgressBar
android:id="#+id/loading_indicator"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:indeterminate="true"
style="#android:style/Widget.Holo.ProgressBar.Large"/>
<LinearLayout
android:id="#+id/list_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/primary_color"
android:padding="#dimen/activity_vertical_margin"
android:layout_below="#id/spinner_filter"
android:visibility="gone">
<TextView
android:layout_width="0dp"
android:layout_weight="5"
android:layout_height="wrap_content"
android:textColor="#color/white_90pct"
android:textAllCaps="true"
android:text="#string/subject_indicator"/>
<View
android:layout_width="1dp"
android:layout_height="15dp"
android:layout_gravity="center_vertical"
android:background="#color/light_color"/>
<TextView
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:singleLine="true"
android:gravity="end"
android:textColor="#color/white_90pct"
android:textAllCaps="true"
android:text="#string/grade_indicator"/>
</LinearLayout>
<ListView
android:id="#+id/semesters_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/list_header"/>
</RelativeLayout>
Java class (onCreateView)
LinearLayout emptyView = (LinearLayout) view.findViewById(R.id.empty);
emptyView.setOnClickListener(this);
I also tried adding the next attributes to the xml but still not working:
android:focusableInTouchMode="true"
android:focusable="true"
android:descendantFocusability="blocksDescendants"
Since you have already specified the linearlayout to be clickable, you just need to specify the method for the onClick event.
So add you your linearLayouts xml, the onClick attribute as below: (focusable may be needed too)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:onClick="layoutClicked"
android:focusable="true"
android:gravity="center">
Then in your code have the method to go with it
public void layoutClicked(View v)
{
// Your code here
}
Try emptyView.setOnTouchListener()
Are you including empty_view into another view that blocks descendant focusability?
Since your edit
Your ListView is on top of the empty_view and blocking clickability.
Since your empty view fills its parent, make sure your include tag for your empty view is the last in the other layout so it will be top-most in the z-order.
in my main layout (set in on create) i have some included layout which have a imageview in them. Some where in my code I need to set bitmap to these imageViews. My method is this:
(ImageView) ((findViewById(R.id.first_app + (i - 1)).findViewById(R.id.app_image)));
which I is loop variable. Problem is I get null for findViewById(R.id.first_app + (i - 1) but these layouts exist in main layout.
please help me finding the cause of this error. I'm really confused and I'm near deadline.
here is My main layout xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="3"
tools:context=".MoreAppsActivity" >
<RelativeLayout
android:id="#+id/more_app_title"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center"
android:background="#EA7026">
<ImageView
android:id="#+id/more_app_title_img"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#android:color/transparent"
android:src="#drawable/more_app_title_image"/>
</RelativeLayout>
<include
android:id="#+id/first_app"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
layout="#layout/single_app_layout" />
<include
android:id="#+id/second_app"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
layout="#layout/single_app_layout" />
<include
android:id="#+id/third_app"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
layout="#layout/single_app_layout" />
<RelativeLayout
android:id="#+id/more_app_subtitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="60dp"
android:gravity="center"
android:background="#DBBE00">
<ImageButton
android:id="#+id/more_app_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:src="#drawable/more_app_threecircle"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/black"
android:layout_below="#id/more_app_button"
android:layout_marginTop="5dp"
android:text="?????? ??? ?????"/>
</RelativeLayout>
</LinearLayout>
and included layout:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
>
<ImageView
android:id="#+id/app_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"/>
<LinearLayout
android:id="#+id/app_text_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center_horizontal"
android:weightSum="100">
<TextView
android:id="#+id/app_text"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="30"
android:background="#88000000"
android:text="aligholi salavat"
android:textSize="22sp"
android:gravity="center"
android:textColor="#android:color/white"/>
</LinearLayout>
</FrameLayout>
the issue is
findViewById(R.id.first_app + (i - 1))
Basically, R.id.first_app is a reference to an int in the R file, you cannot append numbers to it because it will end up equaling a reference to something else. There is every chance that they will change order or value when compiling.
Edit: You could create an int array of R.id.first_app, R.id.second_app and R.id.third_app. This way the pointers to the layouts remain constant.
int[] layouts = {R.id.first_app, R.id.second_app, R.id.third_app};
Then in the loop
findViewById(layouts[i])