CODEWITHSUNDEEP
androidimageview
RajSharma
RajSharma

Reputation: 1971

How to change the Alpha of an ImageView in android

I have five ImageViews declared in the layout file. All of them have src attribute set to some image.

I want to give some effect something like changing the alpha value when you click on an image to the images.

Here is my code

 <ImageView
        android:id="@+id/imageViewNews"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:adjustViewBounds="true"
        android:scaleType="fitXY"
        android:src="@drawable/news" />

    <ImageView
        android:id="@+id/imageViewBookmark"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:adjustViewBounds="true"
        android:scaleType="fitXY"
        android:src="@drawable/bookmark" />

Upvotes: 2

Views: 2558

Answers (2)

K Guru
K Guru

Reputation: 1302

In XML use 

android:alpha="" alpha between 0 to 1

In code use 

imageView.setAlpha(int);

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Upvotes: 2

Blackbelt
Blackbelt

Reputation: 157437

the simplest way is to use ViewCompat.setAlpha

  ViewCompat.setAlpha(imageViewInstace, alpha);

where alpha is a float between 0 and 1

Upvotes: 0

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