5.1 Crash - A TaskDescription's primary color should be opaque

Question

I have implemented material design into my app and it runs perfectly fine on < Android 5 but when I try to run on Android 5.0 and above I get the following in my logcat.<

Answer 1

You can not use alfa in primary color. The primary color has to be opaque.

Change:

<item name="colorPrimaryDark">#4DFF9800</item>
<item name="colorPrimary">#4D607D8B</item>

To

<item name="colorPrimaryDark">#FF9800</item>
<item name="colorPrimary">#607D8B</item>

for api 21 in res/values-v21/style.xml file

Answer 2

Simple solution to the issue is to remove the opaque applied to the primary color in colors.xml

When opaque is applied to primary color the color code look like this "#aca688ff", where it has to be ex: "#F50057" (6 letters alphanumeric code without opaque).

Hope the above solution helps you to fix the issue.

Answer 3

Error java.lang.RuntimeException: A TaskDescription's primary color should be opaque

Answer: go to your app-->value-->color and look at your primary color and count the characters there It must have six hexa characters(like #FDEF25).. It must not have more than six characters.

Here is the video for easiness

Answer 4

@Konrad Krakowiak is right.
You can see the source code of android.app.ActivityManager#TaskDescription.

/**
    * Creates the TaskDescription to the specified values.
    *
    * @param label A label and description of the current state of this task.
    * @param icon An icon that represents the current state of this task.
    * @param colorPrimary A color to override the theme's primary color. This color must be opaque.
    */
    public TaskDescription(String label, Bitmap icon, int colorPrimary) {
      if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) {
        throw new RuntimeException("A TaskDescription's primary color should be opaque");
      }

      mLabel = label;
      mIcon = icon;
      mColorPrimary = colorPrimary;
    }