Styjun

This error comes on my working project. I thought that this error is create because of I used icon as id in imageview, it is not resolving by rebuilding the project. When I create a new project it gives the same error on that project too.

Following xml is one of them. which not belongs to my project and causing the problem.

<?xml version="1.0" encoding="utf-8"?>
<!--
 ~ Copyright (C) 2015 The Android Open Source Project
 ~
 ~ Licensed under the Apache License, Version 2.0 (the "License");
 ~ you may not use this file except in compliance with the License.
 ~ You may obtain a copy of the License at
 ~
 ~ http://www.apache.org/licenses/LICENSE-2.0
 ~
 ~ Unless required by applicable law or agreed to in writing, software
 ~ distributed under the License is distributed on an "AS IS" BASIS,
 ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ~ See the License for the specific language governing permissions and
 ~ limitations under the License
 -->

<!-- Layout to be used with only max 3 actions. It has a much larger picture at the left side-->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/status_bar_latest_event_content"
 android:layout_width="match_parent"
 android:layout_height="128dp"
 >
 <ImageView android:id="@+id/test_icon"
 android:layout_width="128dp"
 android:layout_height="128dp"
 android:scaleType="centerCrop"
 />

 <include layout="@layout/notification_media_cancel_action"
 android:layout_width="48dp"
 android:layout_height="48dp"
 android:layout_marginLeft="2dp"
 android:layout_marginRight="2dp"
 android:layout_alignParentRight="true"
 android:layout_alignParentEnd="true"/>

 <include layout="@layout/notification_template_lines_media"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:layout_marginLeft="128dp"
 android:layout_marginStart="128dp"
 android:layout_toLeftOf="@id/cancel_action"
 android:layout_toStartOf="@id/cancel_action"/>

 <LinearLayout
 android:id="@+id/media_actions"
 android:layout_width="match_parent"
 android:layout_height="48dp"
 android:layout_toRightOf="@id/icon"
 android:layout_toEndOf="@id/icon"
 android:layout_alignParentBottom="true"
 android:layout_marginLeft="12dp"
 android:layout_marginRight="12dp"
 android:orientation="horizontal"
 android:layoutDirection="ltr"
 >
 <!-- media buttons will be added here -->
 </LinearLayout>
 <ImageView
 android:layout_width="match_parent"
 android:layout_height="1dp"
 android:layout_toRightOf="@id/icon"
 android:layout_toEndOf="@id/icon"
 android:layout_above="@id/media_actions"
 android:id="@+id/action_divider"
 android:background="?android:attr/dividerHorizontal" />
</RelativeLayout>

This is my app level gradle.

apply plugin: 'com.android.application'

android 
 compileSdkVersion 25
 buildToolsVersion "26.0.1"
 defaultConfig 
 applicationId "com.example.usamaakmal.voicechatapplication"
 minSdkVersion 15
 targetSdkVersion 25
 versionCode 1
 versionName "1.0"
 testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 
 buildTypes 
 release 
 minifyEnabled false
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 
 


dependencies 
 compile fileTree(dir: 'libs', include: ['*.jar'])
 androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', 
 exclude group: 'com.android.support', module: 'support-annotations'
 )
 compile 'com.android.support:appcompat-v7:25.3.1'
 compile 'com.android.support.constraint:constraint-layout:1.0.2'
 compile 'com.google.firebase:firebase-auth:11.0.0'
 compile 'com.android.support:design:25.3.1'
 compile 'com.android.support:support-v4:25.3.1'
 testCompile 'junit:junit:4.12'


apply plugin: 'com.google.gms.google-services'

You have modified the xml, just change the top ImageView id from test_icon to icon

For Reference, view link

Hope it helps!

1. you are using resources that your current layout doesn't support. Those resources are only available for Relative Layout. Check your layout again and try to change it to exact layout


2. the id "@id/icon" is not exist.

I think your problem that there is no id such as "@id/icon". Check your ids again and fix it

Try 3 things, it may be help:

1. Invalidate caches and Restart


2. delete and Reimport your R file like :
   import your_package_name.R;


3. check your layout proper and try to synchronise and rebuild your
   project.

try clean/rebuild project also invalidate caches and restart option.

File->Invalidate caches and Restart

when you include layout the current layout doesn't have that layout's ids in its viewgroup thus it's not finding the ids.

use the exact layout in your layout or wrap it with another parent layout

By Updating android studio my issued is solved. :)