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Android Build a Simple Android App (2014) Creating the Screen Layout Setting Colors

Posted by ditlhake matshube
ditlhake matshube
208 Points

I JUST CANT FIGURE WHAT THIS QUESTION NEEDS

The task is to change background for this code to black and text to white. how can i do that?

activity_main.xml 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@android:color/white" >

  <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:text="Treehouse loves me!"
    android:textSize="72sp" />

</RelativeLayout>

1 Answer

Daniel Hartin
Daniel Hartin
18,106 Points
Daniel Hartin
Daniel Hartin
18,106 Points

Hi

XML can be a little confusing at first. however it is really useful for setting attributes of layout to avoid the usually more painful way of doing it programatically in java.

most of the attributes are set by using android: and then you should be able to select from a list of prompts to help you if you are unsure. The one you need is android:textColor="@android:color/white". I have added the answer for both questions in the text below however if you want a go at the second question by yourself don't look at the second block of code.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@android:color/white" >

  <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:textColor="@android:color/white"
    android:text="Treehouse loves me!"
    android:textSize="72sp" />

</RelativeLayout>

Here's the second question...

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#fff092b0" >

  <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:textColor="@android:color/white"
    android:text="Treehouse loves me!"
    android:textSize="72sp" />

</RelativeLayout>

Hope this helps Daniel