I get an warning about [Accessibility]Missing contentDescription attribute on image in eclipse. This warning show at line 5 (declare ImageView
) in XML code below.
This not make any error when build and run my application. But I really want to know why i get this warning.
This is my XML file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/contact_entry_image"
android:src="@drawable/ic_launcher"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/contact_entry_text"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
/>
</LinearLayout>
Please help me regarding this and thanks for your reading.
This question is related to
android
eclipse
warnings
accessibility
android-imageview
If you don't care at all do this:
android:contentDescription="@null"
Although I would advise the accepted solutions, this is a hack :D
Add
tools:ignore="ContentDescription"
to your image. Make sure you have xmlns:tools="http://schemas.android.com/tools"
.
in your root layout.
We can resolve this warning by adding this code below in Strings.xml and activity_main.xml
<string name="imgDescription">Background Picture</string>
you image will be like that:
<ImageView
android:id="@+id/imageView2"
android:lay`enter code hereout_width="0dp"
android:layout_height="wrap_content"
android:contentDescription="@string/imgDescription"
app:layout_editor_absoluteX="0dp"
app:layout_editor_absoluteY="0dp"
app:srcCompat="@drawable/background1"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp" />
android:contentDescription="@string/imgDescription"
Strings.xml
<resources>
<string name="app_name">Saini_Browser</string>
<string name="SainiBrowser">textView2</string>
<string name="imgDescription">BackGround Picture</string>
</resources>
Updated:
As pointed out in the comments, setting the description to null indicates that the image is purely decorative and is understood as that by screen readers like TalkBack.
Old answer, I no longer support this answer:
For all the people looking how to avoid the warning:
I don't think android:contentDescription="@null"
is the best solution.
I'm using tools:ignore="ContentDescription"
that is what is meant to be.
Make sure you include xmlns:tools="http://schemas.android.com/tools"
in your root layout.
This warning tries to improve accessibility of your application.
To disable missing content description warning in the whole project, you can add this to your application module build.gradle
android {
...
lintOptions {
disable 'ContentDescription'
}
}
Going forward, for graphical elements that are purely decorative, the best solution is to use:
android:importantForAccessibility="no"
This makes sense if your min SDK version is at least 16, since devices running lower versions will ignore this attribute.
If you're stuck supporting older versions, you should use (like others pointed out already):
android:contentDescription="@null"
Source: https://developer.android.com/guide/topics/ui/accessibility/apps#label-elements
The warning is indeed annoying and in many (most!) cases no contentDescription is necessary for various decorative ImageViews. The most radical way to solve the problem is just to tell the Lint to ignore this check. In Eclipse, go to "Android/Lint Error Checking" in Preferences, find "contentDescription" (it is in the "Accessibility" group) and change "Severity:" to Ignore.
Add android:contentDescription="@string/description"
(static or dynamic) to your ImageView.
Please do not ignore nor filter the message, because it is helpfull for people using alternative input methods because of their disability (Like TalkBack, Tecla Access Shield etc etc).
Source: Stackoverflow.com