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Android Build a Simple Android App (retired 2014) Pretty Little Things Animating the Crystal Ball

Posted by Steve Hunter
Steve Hunter
57,712 Points

answerLabel text has become invisible

I have added the animation to the ImageView and this works fine but I can no longer see any of the predictions.

Is it possible that the animation has been put on top of the text so it is obscuring it? I commented out the animateCrystalBall method call but this made no difference - the text was still invisible.

Any thoughts?

4 Answers

Martin Toth
Martin Toth
2,931 Points

Hi Steve!

I think your imageView is overlaying (it is on top) of your TextView in your main layout. Try to change the order of the elements of the layout file in the "Outline" editor (activity_main.xml -> Graphical Layout -> Right side of the screen).

The vertical order of this list is representing your elements in the layout BOTTOM-UP (the first item in the list is behind the second one... and so on).

Hope this helps.

Martin

Martin Toth
Martin Toth
2,931 Points

This is my activity_main.xml:

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

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="fitCenter"
        android:src="@drawable/ball01" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:weightSum="1" >

        <View
            android:id="@+id/view1"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_weight="0.2" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="0.6"
            android:gravity="center_horizontal"
            android:shadowColor="@android:color/white"
            android:shadowRadius="10"
            android:textColor="@android:color/white"
            android:textSize="32sp" />

        <View
            android:id="@+id/view2"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_weight="0.2" />
    </LinearLayout>

</RelativeLayout>
Masum Bergmann
PLUS
Masum Bergmann
Courses Plus Student 4,129 Points
Masum Bergmann
Masum Bergmann
Courses Plus Student 4,129 Points

Hi Steve, is your textView inside a linear layout? Check the visibility properties of your linLayout (if you have one) and of your textView. You can set a View's visibility property also programmatically, with something like: mTextContainer.setVisibility(View.VISIBLE); where mTextContainer has been initialized to the appropriate View.

Also make sure that your code generates an answer and that you call a method to display it. You can always add a second TextView to your layout and see if you can get the answer to appear in that TextView...

Hope that helps!

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Thanks for the reply.

There's nothing in the XML that changes the Visibility property.

I'll try adding a new View tomorrow. It was all working before so I'm confused as to what I got wrong!

Steve.

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Thanks Martin ....

My .xml didn't have 

android:layout_weight = "0.6"

in it. I've corrected that.

I now have other problems caused by continuing with the course and adding sound etc. I now have other errors but I think my lack of text is probably fixed!

Thank you!

Steve.