Error:(10) Error parsing XML: duplicate attribute

Question

hi i have got a problem when i was making a navigation drawer. it show me two :

"Error parsing XML: duplicate attribute"

one of them is about my main layout and another is about my

E:\MyApplication\app\build\intermediates\res\merged\debug\layout\main.xml

and in the down of this two error that show me this:

"Error:Execution failed for task ':app:processDebugResources'. com.android.ide.common.process.ProcessException: Failed to execute aapt" error too.

and in the preview that say me i have two render error with these subjects

"compilation errors" and "Missing classes"

and this is my Main Activity:

     package com.example.mehrad.myapplication;

     import android.content.Context;
     import android.content.SharedPreferences;
     import android.support.v4.widget.DrawerLayout;
     import android.support.v7.app.AppCompatActivity;
     import android.os.Bundle;
     import android.support.v7.widget.LinearLayoutManager;
     import android.support.v7.widget.RecyclerView;
     import android.view.LayoutInflater;

     public class MainActivity extends AppCompatActivity {
         private SharedPreferences sharedPreferences;
         private DrawerLayout drawerLayout;
         private NavigationView navigationView;
         @Override
         protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.main);
             new MyShared(this);
             new Names("first one");
             new Names("second one");
             RecyclerView recyclerView=(RecyclerView)findViewById(R.id.rec);
             LinearLayoutManager linearLayoutManager=new           
        LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
             recyclerView.setLayoutManager(linearLayoutManager);
             MyAdapter myAdapter=new MyAdapter(this);
             recyclerView.setAdapter(myAdapter);
             drawerLayout =(DrawerLayout) findViewById(R.id.dl);
             navigationView=(NavigationView)findViewById(R.id.nv);
         }
     }

and this is my main layout:

     <?xml version="1.0" encoding="utf-8"?>
        <android.support.v4.widget.DrawerLayout
           xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/dl"
            android:fitsSystemWindows="true"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            xmlns:app="http://schemas.android.com/apk/res-auto">
            <include layout="@layout/activity_main"/>
            <android.support.design.widget.NavigationView
            android:layout_width="wrap_content"      
            android:layout_gravity="right"    
            android:id="@+id/nv"
            app:headerLayout="@layout/header"
            app:menu="@menu/menu"
            android:layout_height="match_parent"/>

    </android.support.v4.widget.DrawerLayout>

and this is my Activity main:

     <?xml version="1.0" encoding="utf-8"?>
     <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"
         tools:context="com.example.mehrad.myapplication.MainActivity">

     <android.support.v7.widget.RecyclerView
         android:id="@+id/rec"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:clipToPadding="false" />
     </LinearLayout>

and this is my app file:

     apply plugin: 'com.android.application'

 android {
         compileSdkVersion 25
         buildToolsVersion "25.0.2"
         defaultConfig {
             applicationId "com.example.mehrad.myapplication"
             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'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:recyclerview-v7:25.3.1'
    compile 'com.android.support:cardview-v7:25.3.1'
}

this is my header:

<?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">
        <ImageView
            android:layout_width="match_parent"
            android:src="@drawable/header"
            android:id="@+id/image"
            android:layout_height="220dp" />
    </LinearLayout>

and this is my menu:

<?xml version="1.0" encoding="utf-8"?>
     <menu xmlns:android="http://schemas.android.com/apk/res/android">
         <item android:id="@+id/favorite" android:title="list"/>
         <item android:id="@+id/about" android:title="about us"/>
         <item android:id="@+id/exit" android:title="exit"/>
     </menu>

help me please

ben_joseph · Accepted Answer · 2018-12-18 12:53:44Z

25

In my case, it happened because I specified height and width for the layout tag (used for data binding). These attributes should be specified only for the child which actually holds the items.

answered Dec 18, 2018 at 12:53

ben_joseph

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Comments

Michael Dodd · Accepted Answer · 2018-02-13 16:55:31Z

18

In this block in your main.xml layout:

<android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/dl"
        android:fitsSystemWindows="true"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        xmlns:app="http://schemas.android.com/apk/res-auto">

You have the attribute xmlns:app twice (see the bottom line). Remove this duplicate attribute and your app should build fine, i.e.

<android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/dl"
        android:fitsSystemWindows="true"
        android:layout_width="wrap_content"
        android:layout_height="match_parent">

answered Feb 13, 2018 at 16:55

Michael Dodd

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3 Comments

Mehrad.Mz Over a year ago

thanks alot but now that give me another with this subject "Error:(10) No resource identifier found for attribute 'headerLayout' in package 'com.example.mehrad.myapplication' "

Mehrad.Mz Over a year ago

and this "Error:(10) No resource identifier found for attribute 'menu' in package 'com.example.mehrad.myapplication'"

Michael Dodd Over a year ago

Do you have files called res/layout/header.xml and res/menu/menu.xml?

Kanagalingam · Accepted Answer · 2019-07-26 05:41:09Z

9

Remove the below lines from layout tag

android:layout_width="match_parent"
android:layout_height="match_parent"

answered Jul 26, 2019 at 5:41

Kanagalingam

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