Can't use srcCompat for ImageViews in android

Question

I'm using the Design Support Library 23.2. I've added these lines in my build.gradle as my Gradle Plugin is version 1.5

defaultConfig {
        applicationId "com.abc.xyz"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        generatedDensities = []
    } 

      aaptOptions {  
        additionalParameters "--no-version-vectors"  
      }  
     }

as it's specified in here

But I can't use the srcCompat attribute for my imageview.

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:srcCompat="@drawable/wallpaper"/>

where @drawable/wallpaper is a vector resource file

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24.0"
    android:viewportHeight="24.0">
<path
    android:fillColor="#FF000000"
    android:pathData="M4,4h7V2H4c-1.1,0 -2,0.9 -2,2v7h2V4zm6,9l-4,5h12l-3,-4 -2.03,2.71L10,13zm7,-4.5c0,-0.83 -0.67,-1.5 -1.5,-1.5S14,7.67 14,8.5s0.67,1.5 1.5,1.5S17,9.33 17,8.5zM20,2h-7v2h7v7h2V4c0,-1.1 -0.9,-2 -2,-2zm0,18h-7v2h7c1.1,0 2,-0.9 2,-2v-7h-2v7zM4,13H2v7c0,1.1 0.9,2 2,2h7v-2H4v-7z"/>

It says

Error:(14) No resource identifier found for attribute 'srcCompat' in package 'android'

My Gradle version is 1.5. How can I use srcCompat?

None of the solutions worked for me. It turns out, the answer is to use androidx.appcompat.widget.AppCompatImageView (ImageView and android.support.v7.widget.AppCompatImageView did NOT work) — ONE, Dec 06 '20 at 07:44

score 127 · Accepted Answer · edited Jan 24 '17 at 22:23

127

Don't

android:srcCompat="@drawable/wallpaper"

Do

app:srcCompat="@drawable/wallpaper"

as it srcCompat attribute is actually defined within AppCompat library.

Important you will need to add appropriate namespace for this.

xmlns:app="http://schemas.android.com/apk/res-auto"

Important

what you are getting it seems like it is just a lint error that can be ignored. I have tried and have the same error, but it is working correctly.

you can use tools:ignore="MissingPrefix" to avoid seeing this error temporarily.

edited Jan 24 '17 at 22:23

Willi Mentzel

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answered Feb 26 '16 at 06:53

Bhavesh Patadiya

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3

But it says Unexpected namespace prefix "app" found for tag Imageview, when I add app:srcCompat="@drawable/wallpaper". – Neeraj Feb 26 '16 at 06:58
2

you need to add xmlns:app="http://schemas.android.com/apk/res-auto" in your xml root tag. – Bhavesh Patadiya Feb 26 '16 at 06:59
are you sure using AppCompat library into your app? please post your full xml file – Bhavesh Patadiya Feb 26 '16 at 07:02
It says "Unexpected namespace prefix "app" found for tag Imageview" – Neeraj Feb 26 '16 at 07:14
please paste your build.gradle file – Bhavesh Patadiya Feb 26 '16 at 07:26
Please see my edited answer. Its an lint error. so you can ignore this. – Bhavesh Patadiya Feb 26 '16 at 07:58
Ignoring is not a good solution because preview doesn't render the layout – osrl Mar 04 '16 at 13:26
Yes, agree but we can expect this as bug which would be gradually been resolved in next version of android studio as its still in Beta and not stable. – Bhavesh Patadiya Mar 04 '16 at 13:28
and what about using android:background or drawable for textviews? how to use it with vector drawable with this approach? – streamride Mar 11 '16 at 11:54
I add all these but app crash on runs. – Mahdi Apr 25 '16 at 06:06
I'm just wondering, how did you know that we should use `xmlns:app="http://schemas.android.com/apk/res-auto"` and not `xmlns:app="http://schemas.android.com/tools"`? Thanks! This fix my problem, but I don't understand how/why :) – jjz Sep 12 '16 at 00:54
If you still get error after adding `app:srcCompat`, add this line to `build.gradle -> defaultConfig`: `vectorDrawables.useSupportLibrary = true` Then synch the gradle – Mehrdad Salimi Jan 22 '18 at 18:34

score 29 · Answer 2 · answered Apr 26 '16 at 22:41

29

Combining many answers into one answer:

<?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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@color/primary">


    <android.support.v7.widget.AppCompatImageView
        android:layout_width="300dp"
        android:layout_height="100dp"
        android:id="@+id/logoImageView"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        app:srcCompat="@drawable/my_logo_vector"
        android:tint="@color/white"
        />

</RelativeLayout>

This worked for me. No lint errors. Use AppCompatImageView.

answered Apr 26 '16 at 22:41

Micro

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Hey did you do something with build.gradle as well? – Solace Jul 16 '16 at 12:19
1

@Solace you need appcompat gradle `compile 'com.android.support:appcompat-v7:23.4.0'` (use same version as your compile project) – Micro Jul 16 '16 at 16:24
But I am using Eclipse :( – Solace Jul 17 '16 at 07:31
1

@Solace I am sorry to hear that. – Micro Jul 17 '16 at 16:59
Does that mean I can't use VectorDrawableCompat in Eclipse? – Solace Jul 17 '16 at 17:30
2

@Solace No clue. I do not use eclipse for android development. – Micro Jul 17 '16 at 17:44
OK. Thank you for your time. – Solace Jul 17 '16 at 18:00
1

@Solace I deeply recommend you try Android Studio latest version it's a lot better than Eclipse for Android development – Itai Spector Nov 23 '16 at 13:52

Artem Garkusha · Answer 3 · 2016-02-26T19:47:58.927

13

First (in build.gradle)

defaultConfig {
    vectorDrawables.useSupportLibrary = true
}

Second

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:srcCompat="@drawable/ic_traffic_black_24dp"
    tools:ignore="MissingPrefix" />

Third

xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"

Here we go.

edited Feb 26 '16 at 19:47

answered Feb 26 '16 at 19:12

Artem Garkusha

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I have all three of those .. the `xmlns` ones properly on the root node for the activity's layout. I get a red underline on the `app:srcCompat` line with the warning:_Unexpected namespace prefix 'app' found for tag ImageButton_ and if I ignore it and install on a device that needs API 19 I get: `Unable to start activity ComponentInfo{xyz.selfenrichment.robertotomas.homeroast/xyz.selfenrichment.robertotomas.homeroast.MainActivity}: android.view.InflateException: Binary XML file line #15: Error inflating class ImageButton` – roberto tomás Apr 15 '16 at 19:48
What should a person who is using Eclipse, rather than Android Studio, do? – Solace Jul 16 '16 at 11:24

score 6 · Answer 4 · edited Jan 05 '17 at 01:30

6

I just changed:

app:srcCompat="@drawable/wallpaper"

to

android:src="@drawable/wallpaper"

This worked for me.

edited Jan 05 '17 at 01:30

Maihan Nijat

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answered Nov 01 '16 at 07:52

vanquan223

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IntelliJ Amiya · Answer 5 · 2016-03-10T12:40:05.747

Call app:srcCompat instead of android:srcCompat .

Don't

android:srcCompat="@drawable/your_image"

DO

app:srcCompat="@drawable/your_image"

Finally

    <ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@drawable/wallpaper"/>

My gradle version is 1.5

Upgrade your Gradle version.

Solution

Gradle Plugin 2.0+  
com.android.tools.build:gradle:2.0.0-beta2

Vector drawables allow you to replace multiple png assets with a single vector graphic, defined in XML. While previously limited to Lollipop and higher devices, both VectorDrawable and AnimatedVectorDrawable are now available through two new Support Libraries support-vector-drawable and support-animated-vector-drawable.

Add this

    // Gradle Plugin 2.0+  
 android {  
   defaultConfig {  
     vectorDrawables.useSupportLibrary = true  
    }  
 }

You’ll note this new attribute only exists in the version 2.0 of the Gradle Plugin. If you are using Gradle 1.5 you’ll instead use

// Gradle Plugin 1.5  
 android {  
   defaultConfig {  
     generatedDensities = []  
  }  

  // This is handled for you by the 2.0+ Gradle Plugin  
  aaptOptions {  
    additionalParameters "--no-version-vectors"  
  }  
 }

Go Through Support Vector Drawables

it says Unexpected namespace prefix "app" found for tag Imageview, when I add app:srcCompat="@drawable/wallpaper". — Neeraj, Feb 26 '16 at 06:58
https://medium.com/@chrisbanes/appcompat-v23-2-age-of-the-vectors-91cbafa87c88#.gu1oxadgs — IntelliJ Amiya, Feb 26 '16 at 07:03

score 3 · Answer 6 · answered Jul 03 '18 at 06:03

there is multiple things which you have to care about First of all use:

defaultConfig {
            vectorDrawables.useSupportLibrary = true
        }

or

vectorDrawables {
        useSupportLibrary = true
    }

and Secondly use

 <android.support.v7.widget.AppCompatImageView
                android:id="@+id/changeLanguages"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_alignParentTop="true"
                android:layout_centerHorizontal="true"
                android:adjustViewBounds="true"
                android:background="@color/transparent"
                android:scaleType="fitCenter"
                app:srcCompat="@drawable/ic_transfer" />

Always use AppCompatImageView or Button because vector image is not supported by Simple ImageView

if all the above methods not worked then use

public class App extends Application {

  @Override public void onCreate() {
    super.onCreate();

    // Make sure we use vector drawables
    AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
  }
}

If you are using Activity then extend your Activity with AppCompatActivty

public final class MainActivity extends AppCompatActivity {    
  @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);
  }
}

score 1 · Answer 7 · answered Feb 26 '16 at 06:53

1

You are using android:srcCompat. It should instead by app:srcCompat as it is an attribute defined within AppCompat, not within the android: namespace.

answered Feb 26 '16 at 06:53

ianhanniballake

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score 1 · Answer 8 · answered Jan 07 '20 at 05:20

I know am late but It might help someone else. I was facing the same issue even though I was using app:SrcCompat.After spending a lot of time I figured it was due to drawables. My issue simply resolved by moving all drawables from drawable(v21) to simple drawable.

score 0 · Answer 9 · answered Feb 26 '16 at 06:46

update your gradle plugin to 2.0+

// Gradle Plugin 1.5  
android {  
     defaultConfig {  
          generatedDensities = []  
     }  

// This is handled for you by the 2.0+ Gradle Plugin  
     aaptOptions {  
          additionalParameters "--no-version-vectors"  
     }

as per google developer's blog guid lines

http://android-developers.blogspot.in/2016/02/android-support-library-232.html

score 0 · Answer 10 · answered Feb 26 '16 at 06:51

From, Android developer site

This library is now a dependency of the v7 AppCompat library, allowing developers and AppCompat to easily use vector drawables.

To use VectorDrawableCompat within an ImageButton or ImageView, use the app:srcCompat XML attribute or setImageResource() method.

To keep referencing attribute IDs on API level 20 or lower, add the following appt flag to your build,gradle file:

If you are building with Android Plugin for Gradle 1.5.0 or lower, add the following to your build.gradle file:

android {
  defaultConfig {
    // Stops the Gradle’s automatic rasterization of vectors
    generatedDensities = []
  }
   // Flag that tells aapt to keep the attribute ids
  aaptOptions {
    additionalParameters "--no-version-vectors"
  }
}

If you are building with Android Plugin for Gradle 2.0.0 or higher, add the following to your build.gradle file:

android {
  defaultConfig {
    vectorDrawables.useSupportLibrary = true
  }
}

score 0 · Answer 11 · answered May 20 '17 at 19:30

0

you need to add

xmlns:app="http://schemas.android.com/apk/res-auto"

to your layout for it to work. My "app:srcCompat" was highlighted in red until i added it.

answered May 20 '17 at 19:30

Jonathan Laliberte

2,672
4
19
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score 0 · Answer 12 · answered Aug 15 '19 at 07:42

Make sure the picture you are trying to use is PNG format.

Copy the picture.

Go to mipmap on the 1.Project TAB in the android hierarchy.

Click on mipmap once then(On windows ctrl + v ), when you name the photo make sure its lower case letters and no symbols.

The photo should be useable.

Set your image view, (you may have to use a filler color temporarily).

Click on the imageView and then click the srcCompact (the one without the paintbrush and type on @mipmap/"Your pictures name" (This step is in the attributes tab)

That should work!

If you need a Content Description I just used @String/StringPicture

Can't use srcCompat for ImageViews in android

12 Answers12

My gradle version is 1.5

Linked