EmojiTextView renders Emoji semi-transparent

问题

I'm implementing the new EmojiCompat into my app. Now I run into the following issue and don't know how to fix it:

The code below is rendered by the EmojiCompat, but the Emoji is rendered semi-transparent:

<android.support.text.emoji.widget.EmojiTextView
                            android:textAlignment="center"
                            android:text="😍"
                            android:textSize="100dp"
                            android:layout_gravity="center"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" />

Screenshot of the rendered XML file on my device:

The layout inspection says: alpha: 1.0

---

How can I fix the TextView to render it fully non-transparent?

Emoji compat version: com.android.support:support-emoji:27.1.+

回答1:

Because the default text color of my Theme was not pure black this is the fix:

mEmojiTextView.setTextColor(0xff000000); // set view textcolor to black

回答2:

It's the default text color for material theme which is grey not pure black. Just set your EmojiTextView text color to black.

android:textColor="#FF000000"

<android.support.text.emoji.widget.EmojiTextView
                            android:textAlignment="center"
                            android:text="😍"
                            android:textSize="100dp"
                            android:textColor="#FF000000"
                            android:layout_gravity="center"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" />

来源：https://stackoverflow.com/questions/50840047/emojitextview-renders-emoji-semi-transparent