Add gradient to imageview

Question

I want to add a gradient on the bottom of my image . Something like this :

I tried something like this but I only get the gradient no image..

    <ImageView
    android:id="@+id/trendingImageView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/trend_donald_sterling"
    android:src="@drawable/trending_gradient_shape"
  />

trending_gradient_shape:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle" >

    <gradient
        android:angle="90"
        android:endColor="@android:color/darker_gray"
        android:startColor="@android:color/darker_gray" />

    <corners android:radius="0dp" />

</shape>

Solution 1

You need two layers: An ImageView, and a View on top of that with your gradient as android:background. Put these two Views in a FrameLayout:

<FrameLayout
    ... >

    <ImageView
        ...
        android:src="@drawable/trend_donald_sterling" />

    <View
        ...
        android:background="@drawable/trending_gradient_shape"/>


</FrameLayout>

Solution 2

Simply set the alpha value in your gardient.xml:

Your imageView:

android:background="@drawable/trend_donald_sterling"
android:src="@drawable/trending_gradient_shape"

Your gradient xml file:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >

<gradient
    android:angle="90"
    android:endColor="#00ffffff"
    android:startColor="#aa000000"
    android:centerColor="#00ffffff" />

<corners android:radius="0dp" />
</shape>

In the color value, the first two places after # correspond to the alpha value, while the rest are the actual color value in R G B format, two for each.

Solution 3

try using the "foreground" attribute in your imageview

<ImageView
        ...
        android:src="@drawable/trend_donald_sterling"
        android:foreground="@drawable/trending_gradient_shape" />

it worked for me.

Solution 4

Use android:foreground="..." instead of android:background="..."

Now you won't need to put ImageView and View inside a FrameLayout!

So your final code will be:

ImageView

<ImageView
    ...
    android:foreground="@drawable/trend_donald_sterling"/>

Drawable

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <gradient
        android:angle="90"
        android:endColor="#00ffffff"
        android:startColor="#aa000000"
        android:centerColor="#00ffffff" />

    <corners android:radius="0dp" />
</shape>

Solution 5

this is how im gonna do, i used relative layout as my parent layout, use the following code

 <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/img_sample"/>
        <View
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/gradiant"/>
        <LinearLayout
            android:layout_marginLeft="10dp"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:weightSum="1">
            <View
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_weight="0.55"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="0.25"
                android:text="Events"
                android:gravity="bottom"
                android:textStyle="bold"
                android:textSize="18sp"
                android:textColor="#ffffff"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="0.25"
                android:text="Some description about the events goes here"
                android:textSize="14sp"
                android:textColor="#ffffff"/>
        </LinearLayout>
    </RelativeLayout>

hope you can figure out, here i attach my gradiant code below.use it inside the drawable folder....

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >

<gradient
    android:angle="90"
    android:endColor="#00ffffff"
    android:startColor="#aa000000"
    android:centerColor="#00ffffff" />

<corners android:radius="0dp" />
</shape>

View more solutions

Comments

[nhaarman]

Don't forget to add an alpha value to your colors. Try starting with android:endColor="#00000000" android:startColor="ff000000", and play around with it to suit your needs.

[sotrh]

This worked for my purposes, but if you only want the gradient to go up to a certain height having a view on top of the ImageView makes more sense.

[Vadim Kotov]

Note: Attribute android:foreground has no effect on API levels lower than 23 (current min is 16). This is what IDE shows me.

[Vadim Kotov]

Note: Attribute android:foreground has no effect on API levels lower than 23 (current min is 16). This is what IDE shows me.

[Slick Slime]

As you will see in my Answer I am using android:background not android:foreground. For your question about API level warning please refer to another SO question.

[Vadim Kotov]

But you've written: Use android:foreground="..." instead of android:background="..." for some reason.

[Slick Slime]

Oops that's my bad. In that case you either change your minSdkVersion to above 22 or follow other questions that requires FrameLayout

[Vaios]

Too much work to do for the UI. Personally, I prefer the solution with the single ImageView. I have not done the maths but seems more effective in performance