CODEWITHSUNDEEP
android
Kishor
Kishor

Reputation: 355

Android imageview tint

While setting tint for an ImageView in xml, I am getting a warning that shows:-

Must use app:tint instead of android:tint

Why should I use app:tint?

Upvotes: 34

Views: 14537

Answers (5)

Renetik
Renetik

Reputation: 6373

It looks like this is a bug of Android Studio to me, as it doesn't take into account your minSdkVersion and also app:tint is not supported well in designer preview. It confuse and slow me repeatedly as I don't remember stuff like this when going back to android development.

Hopefully one day they will improve it to be really useful and account also your minSdkVersion but for now it look like its best to ignore that by going to preferences editor inspection and disable app:tint attribute should be used on completely.

Edit: For versions > 24 . Right now I bumped back into this, after reading somewhere that I should use app:tint for some possible compatibility issues I did that to my whole codebase. Then I realised that actually I have new issue after this change when tested on older devices so I reverted back to normal android:tint again.. issues where related to theme change that I do in my apps so somehow appcompat tint doesn't work the same as regular at last when I test in simulators form api 24 and my two more recent android devices, appcompat make actual issues regular works in my testing perfect so I hope I am not wrong with this.

Upvotes: 2

Ricardo Yubal
Ricardo Yubal

Reputation: 491

This looks like it's a bug. I have an XML with 3 ImageViews that are the exact same (they're copies of eachother), and I get that error in one of them only. Weirdly enough, clicking on Fix converts that line from android:tint="..." to card_view:tint="...".

Only solution so far was to add tools:ignore="UseAppTint" to silence this warning.

Upvotes: 2

user2051551
user2051551

Reputation: 227

ImageViewTintDetector lint check was added in androidx.appcompat:appcompat:1.2.0-alpha02 Add Lint rule to check android:tint usage on ImageView

Actually I have not found explanation why should developer replace android:tint with app:tint. My project minSdkVersion is 22.

Upvotes: 8

Artem
Artem

Reputation: 966

In AppCompatImageView it's fine, you could use android:tint.

Upvotes: 19

Zankrut Parmar
Zankrut Parmar

Reputation: 1997

Because there were some issues where android:tint wasn't working for version < 21. app:tint works under version 21. Here is a similar problem. Drawable tinting for api <21

Upvotes: 20

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