Develop Reference

Android XML error while generating signed .apk file

I've not opened this particular project for about 3 months but when I tried to generate a signed .apk file, I get this one error only:
C:\app\src\main\res\layout\fragment_newanswers.xml:57: Error: The id "linearLayout2" is not defined anywhere. [UnknownId]
android:layout_alignTop="#+id/linearLayout2"
Here's my current code in that xml file:
<TextView
android:text="OptionView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/txtOptionTitle"
android:textSize="24sp"
android:textAlignment="center" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txtOptionTitle"
android:layout_alignParentStart="false"
android:layout_alignParentBottom="false">
<!--
<TextView
android:text="QuestionView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/txtQuestionTitle"
android:textAlignment="center"
android:textSize="18sp" />
-->
<com.rokonoid.widget.ExpandableTextView
android:id="#+id/txtQuestionTitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="18sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.bozapro.circularsliderrange.CircularSliderRange
android:id="#+id/cirAns"
android:layout_width="wrap_content"
android:layout_height="343dp"
circular:start_angle="270"
circular:end_angle="300"
circular:start_thumb_size="0dp"
android:paddingLeft="75dp"
android:paddingRight="75dp" />
<TextView
android:text="5%"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/linearLayout2"
android:layout_centerHorizontal="true"
android:id="#+id/txtPercent"
android:textAlignment="center"
android:textSize="36sp"
android:layout_marginTop="150dp" />
</RelativeLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="Back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btnQnsBack"
android:layout_weight="1" />
<Button
android:text="Next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btnQnsNext"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Funny thing is, it worked multiple times previously and I did not make any changes at all. I can also rebuild and clean build it without errors. Oddly, my backup versions which are Identical, generate this ONE same error for my 6 different xml files here:
Error:(5) Error: Suspicious namespace and prefix combination [NamespaceTypo]
It points to this line in each of the 6 files:
xmlns:app="http://schemas.android.com/tools"
My guess is I'm not calling something in the MainActivity (but that would not explain why it has always worked -with fully functioning .apk) Any thoughts?
Thanks heaps!
James

Remove this line
android:layout_alignTop="#+id/linearLayout2"
From
<TextView
android:text="5%"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/linearLayout2"
android:layout_centerHorizontal="true"
android:id="#+id/txtPercent"
android:textAlignment="center"
android:textSize="36sp"
android:layout_marginTop="150dp" />
As i see no layout with id linearLayout2 in your file above. Errors of such kind are not generated in the debug build but in the realease build.

As #Malik Ahhsan said, just remove the android:layout_alignTop="#+id/linearLayout2"

updating design and support libs broke UI

currently we are using design and support libs 23.1.1 , when i updated to 25 there is a big gap in the layout and i can't figure out why
unfortunately i need more reputation to post links , all the links inside the file , sorry.
https://gist.github.com/xxqxpxx/a652a0c26a132913cd67faf21a670515
included files : build.gradle , layoutfile.xml , fragmentfile.xml , mainactivity ,activity1.
screenshot before :
screenshot after :

In your layout file change the root Linear layout height form match_parent to wrap_content
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/authors_and_publishers_simpleDraweeView_margin_left"
android:orientation="vertical">
<com.facebook.drawee.view.SimpleDraweeView
android:id="#+id/authors_and_publishers_simpleDraweeView"
android:layout_width="#dimen/author_publishers_simpledraweeview"
android:layout_height="#dimen/author_publishers_simpledraweeview"
android:layout_gravity="center_horizontal" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/authors_publishers_name_layout_margin_top"
android:orientation="vertical">
<com.kotobi.widget.fonts.views.textviews.RobotoLight
android:id="#+id/authorName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:lines="1"
android:text="Name"
android:textSize="#dimen/author_publisher_pop_up_followrs_text_size" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/authors_and_publishers_simpleDraweeView_margin_top">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="#dimen/author_publisher_pop_up_image_dimen"
android:layout_height="#dimen/author_publisher_pop_up_image_dimen"
android:layout_gravity="center_vertical"
android:layout_marginRight="#dimen/author_publisher_pop_up_image_dimen_margin_right"
android:background="#drawable/followers" />
<com.kotobi.widget.fonts.views.textviews.RobotoLight
android:id="#+id/numberOfFollowers"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="12"
android:textColor="#color/grey"
android:textSize="#dimen/author_publisher_pop_up_followrs_number_books" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true">
<ImageView
android:layout_width="#dimen/author_publisher_pop_up_image_dimen"
android:layout_height="#dimen/author_publisher_pop_up_image_dimen"
android:layout_gravity="center_vertical"
android:layout_marginRight="#dimen/author_publisher_pop_up_image_dimen_margin_right"
android:background="#drawable/number_books" />
<com.kotobi.widget.fonts.views.textviews.RobotoLight
android:id="#+id/numberOfBooks"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="12"
android:textColor="#color/grey"
android:textSize="#dimen/author_publisher_pop_up_followrs_number_books" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</LinearLayout>

class file for android.support.v4.widget.TintableCompoundButton not found

I want to Create a CheckBox, My compile
sdk version is 23,
Target version is 23,
build tool version is 23.0.0,
in gradle I'hv added
compile 'com.android.support:support-v4:23.2.0',
compile 'com.android.support:appcompat-v7:23.2.0'
both and in menifest given the app theme as android:theme="#style/Theme.AppCompat.Light.NoActionBar" and no specific theme to Activity. when I run my code its throwing
InflateException line number #23 at xml file, problem while inflating kind of
Then I decided to convery a simple ChcekBox to android.support.v7.widget.AppCompatCheckBox but on the xml file Preview its showing Rendering Problems The following classes could not be instantiated:
- android.support.v7.widget.AppCompatCheckBox
Exception Details java.lang.ClassNotFoundException: android.support.v4.widget.TintableCompoundButton
and if i try to run it it gives me class file for android.support.v4.widget.TintableCompoundButton not found.
So, Any one faced this issue?
<?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"
android:background="#color/white"
android:orientation="vertical">
<LinearLayout
android:id="#+id/lnv_input"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/rlv_header"
android:orientation="vertical">
<android.support.v7.widget.AppCompatCheckBox
android:id="#+id/confirmCheckBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="10dp"
android:checked="false"
android:gravity="start"
android:text="#string/personal_confirm_text"
android:textColor="#color/black"
android:textSize="14sp" />
</LinearLayout>
<RelativeLayout
android:id="#+id/rlv_next"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="40dp"
android:background="#color/crabfx_light_gray"
android:visibility="gone">
<View
android:layout_width="fill_parent"
android:layout_height="2dp"
android:layout_alignParentTop="true"
android:background="#color/crabfx_green" />
<TextView
android:id="#+id/tv_next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:drawablePadding="10dp"
android:drawableRight="#drawable/discloser"
android:gravity="center_vertical"
android:text="#string/lbl_next"
android:textColor="#color/black"
android:textSize="18sp" />
<View
android:layout_width="fill_parent"
android:layout_height="2dp"
android:layout_alignParentBottom="true"
android:background="#color/crabfx_green" />
</RelativeLayout>
</RelativeLayout>
and below is the theme to Application tag in menifest
android:theme="#style/Theme.AppCompat.Light.NoActionBar"

Not able to use UI/UX android libraries e.g. AndroidBootstrap and other

I am trying to work on UI of my first android project. Since the widgets in android studio are not so attractive, i have downloaded libraries from github. e.g. Android Bootstrap and others.
As mentioned in the github page, i made the following changes:
added to build.gradle (module:app)
dependencies {
compile 'com.beardedhen:androidbootstrap:+'
}
and added the following in my layout file:
xmlns:bootstrap="http://schemas.android.com/apk/res-auto"
But when i do the following:
<!-- basic button -->
<com.beardedhen.androidbootstrap.BootstrapButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Success"
bootstrap:bb_icon_right="fa-android"
bootstrap:bb_type="success"
/>
I get simple button rather than getting Bootstrap button. Am i missing something while using UI/UX libraries?
Similar scenario happens with font-awesome-text and all other libraries.
Please help.
Adding full xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:bootstrap="http://schemas.android.com/apk/res-auto"
xmlns:bootstrapbutton="http://schemas.android.com/apk/com.beardedhen.androidbootstrap"
xmlns:fontawesometext="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Sized Buttons" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<com.beardedhen.androidbootstrap.BootstrapButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Large"
bootstrapbutton:bb_icon_left="fa-rocket"
bootstrapbutton:bb_roundedCorners="true"
bootstrapbutton:bb_size="large"
bootstrapbutton:bb_type="primary" />
<com.beardedhen.androidbootstrap.BootstrapButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="default"
bootstrapbutton:bb_icon_left="fa-twitch"
bootstrapbutton:bb_roundedCorners="true"
bootstrapbutton:bb_size="default"
bootstrapbutton:bb_type="primary" />
<com.beardedhen.androidbootstrap.BootstrapButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Small"
bootstrapbutton:bb_icon_left="fa-puzzle-piece"
bootstrapbutton:bb_roundedCorners="true"
bootstrapbutton:bb_size="small"
bootstrapbutton:bb_type="primary" />
<com.beardedhen.androidbootstrap.BootstrapButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="xsmall"
bootstrapbutton:bb_icon_left="fa-ticket"
bootstrapbutton:bb_roundedCorners="true"
bootstrapbutton:bb_size="xsmall"
bootstrapbutton:bb_type="primary" />
</LinearLayout>
<com.beardedhen.androidbootstrap.FontAwesomeText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
fontawesometext:fa_icon="fa-github"
android:layout_margin="10dp"
android:textSize="32sp"
/>
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</HorizontalScrollView>
</LinearLayout>

Admob ads not showing on android emulater

I have added admob codes for showing ads in my app. When i run the app in emulator it opens the splash screen and then the app suddenly exits saying "Unfortunately,Your app has stopped". I don't know why it is showing. It works well before addding the admob codes.I have also added the code. help me with this.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"``
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background2" >
<ScrollView
android:id="#+id/scrollView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerInParent="true"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:orientation="vertical" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="60dp"
android:background="#null"
android:padding="30dp"
android:src="#drawable/menu1"
android:contentDescription="#string/image_desc" />
<ImageButton
android:id="#+id/imageButton2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/imageButton1"
android:background="#null"
android:padding="30dp"
android:src="#drawable/menu2"
android:contentDescription="#string/image_desc" />
<ImageButton
android:id="#+id/imageButton3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/imageButton2"
android:background="#null"
android:padding="30dp"
android:src="#drawable/menu3"
android:contentDescription="#string/image_desc" />
<ImageButton
android:id="#+id/imageButton4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/imageButton3"
android:background="#null"
android:padding="30dp"
android:src="#drawable/menu4"
android:contentDescription="#string/image_desc" />
<ImageButton
android:id="#+id/imageButton5"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/imageButton4"
android:background="#null"
android:padding="30dp"
android:src="#drawable/menu5"
android:contentDescription="#string/image_desc" />
</LinearLayout>
</ScrollView>
<com.google.ads.AdView android:id="#+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adUnitId="admob id"
ads:adSize="SMART_BANNER"
ads:loadAdOnCreate="true"/>
</RelativeLayout>

there might be a some problem with adding googleadmobsdk cross check yourself with this link visit https://developers.google.com/mobile-ads-sdk/docs/#android.

I think that i can find at least one problem in your application, you are missing one impotant field in your admob specification, you must add that line in your layout:
ads:adUnitId="yourunitid"
In order to obtain yout unit id you must register your app to admob site, here: http://www.admob.com/my_sites/create_site
Another thing that you must consider, is that if you had just inserted the app, the banners usually show only after few hours.
Finally, i suggest you to add that line in your layout:
ads:testDevices="TEST_EMULATOR"
With that you are saying to admob to send only "test" banner to your device (this prevent the risk to be banned)
So your adView should be like:
then if it doesn't help add your logcat output.