android - Elevation property is not working and URI is not registered -


i'm following tutorial. instructions make 2 base layout files. 1 applied devices, , other 1 applied devices api level lower 21 on top of first base file. api level of 21 or higher instructions to make folder within layout called layout-v21 has xml file. file identical base layout file api level lower 21 except has android:elevation="5dp". background set can't it.i've noticed xml in layout-v21 has it's property value xmlns:android= in red indicating error. how can fix this? why elevation not working properly? i'm not sure did wrong, want elevation work can move on. have tried running 21, 22 , 23 , same result. no shadow.

layout/actitvity_main.xml -> core layout file:

<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"                 tools:context=".mainactivity" android:id="@+id/relativelayout">                 <include layout="@layout/toolbar"/> </linearlayout>

layout/toolbar.xml -> api of lower 21

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.toolbar xmlns:android="http://schemas.android.com/apk/res/android"                                    android:layout_width="match_parent"                                    android:layout_height="wrap_content"                                    android:background="@color/colorprimary"                                    android:minheight="?attr/actionbarsize">  </android.support.v7.widget.toolbar>

layout/layout-v21/toolbar.xml -> api of 21 or higher

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.toolbar xmlns:android="http://schemas.android.com/apk/res/android"                                    android:layout_width="match_parent"                                    android:layout_height="wrap_content"                                    android:background="@color/colorprimary"                                    android:minheight="?attr/actionbarsize"                                    android:elevation="5dp">  </android.support.v7.widget.toolbar>

the property of value xmlns has uri error.

here build.gradle file.

buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:1.2.3'     } } apply plugin: 'com.android.application'  repositories {     jcenter() }  android {     compilesdkversion 23     buildtoolsversion "23.0.3"      defaultconfig {         applicationid "com.example.pluralsight"         minsdkversion 7         targetsdkversion 23         versioncode 1         versionname "1.0"     }      compileoptions {         sourcecompatibility javaversion.version_1_6         targetcompatibility javaversion.version_1_6     }     buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'         }     } }  dependencies {     compile 'com.android.support:support-v4:24.0.0-beta1'     compile 'com.android.support:gridlayout-v7:24.0.0-beta1'     compile 'com.android.support:appcompat-v7:24.0.0-beta1'     compile 'com.android.support:appcompat-v7:23.+'     compile filetree(dir: 'libs', include: ['*.jar']) }

wow, kid not figured out posted this. checked folder structure. folder layout-v21 inside of layout why elevation didn't work , receiving uri error. moved folder res , worked. moral of story, check structure.


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