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pdiaz
16,073 PointsCan someone help with android theme?
Hey guys, I'm having a problem with my app, in which I can only use the default app theme in order for my app to work. If I put a another theme in, the app will crash. I only want my app to have the theme.black.NoTitleBar.fullscreen. Is there any way for me to apply this theme without having my app crashing.
2 Answers
Gunjeet Hattar
14,483 PointsIt's a bug in the ADT as I suppose
The error relates to java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity
The video in treehouse uses the Theme called ** Theme.Black.NoTitleBar.Fullscreen ** . Are you using this?
If yes, then the new android update no longer supports this. However there is a work around as proposed by treehouse
1) Change your project back to using "AppTheme" like it was before in AndroidManifest.xml and the preview.
2) Add the following two lines to the file res/values/styles.xml (inside the <style name="AppTheme"> tag):
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
3) Set the background color to black in the file res/layout/activity_main.xml. The root element, RelativeLayout, is the one that makes up the whole screen. Add this line after the layout_height line but before the closing angle bracket >:
android:background="@android:color/black"
4) Change MainActivity to extend Activity, not ActionBarActivity
Hope this helps. Ask again if you have doubts.
Gunjeet Hattar
14,483 PointsExtend is a keyword in Java that implies inheritance.
By convention it means remove ActionBar from ActionBarActivity so that it reads Activity in your MainActivity.java file
Hope I made sense. Ask again if you have a doubt
pdiaz
16,073 Pointsok so I changed it to this: public class MainActivity extends Activity{ but I'm receiving a bunch of errors so what should I do now?
Gunjeet Hattar
14,483 PointsThat's correct. After you do that you will need to take care of your import using ctrl + shift + o (Windows) and cmd + shift + o (Mac)
If that still doesn't work feel free to take a screen shot or paste errors here so that we can have a look
pdiaz
16,073 PointsThanks so much for your help, though how do you take screenshots on a windows computer.
Gunjeet Hattar
14,483 Pointsalt + print srcn button. Next open MS Paint and paste the screenshot in it and edit.
pdiaz
16,073 Pointspdiaz
16,073 Pointshow am I suppose to extend activity?