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Android

Posted by Elijah Thompson
Elijah Thompson
546 Points

Unfortunately, Crystal Ball has stopped.

hello everyone. i wasn't doing anything out of the ordinary, i was following the instructions and the app stopped opening after the vid where you add the black background. my log cat:

07-13 15:04:13.757: D/AndroidRuntime(3551): Shutting down VM 07-13 15:04:13.757: W/dalvikvm(3551): threadid=1: thread exiting with uncaught exception (group=0xb1ab3ba8) 07-13 15:04:13.777: E/AndroidRuntime(3551): FATAL EXCEPTION: main 07-13 15:04:13.777: E/AndroidRuntime(3551): Process: com.example.crystalball, PID: 3551 07-13 15:04:13.777: E/AndroidRuntime(3551): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.crystalball/com.example.crystalball.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread.access$800(ActivityThread.java:135) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.os.Handler.dispatchMessage(Handler.java:102) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.os.Looper.loop(Looper.java:136) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread.main(ActivityThread.java:5017) 07-13 15:04:13.777: E/AndroidRuntime(3551): at java.lang.reflect.Method.invokeNative(Native Method) 07-13 15:04:13.777: E/AndroidRuntime(3551): at java.lang.reflect.Method.invoke(Method.java:515) 07-13 15:04:13.777: E/AndroidRuntime(3551): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 07-13 15:04:13.777: E/AndroidRuntime(3551): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 07-13 15:04:13.777: E/AndroidRuntime(3551): at dalvik.system.NativeStart.main(Native Method) 07-13 15:04:13.777: E/AndroidRuntime(3551): Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:111) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98) 07-13 15:04:13.777: E/AndroidRuntime(3551): at com.example.crystalball.MainActivity.onCreate(MainActivity.java:15) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.Activity.performCreate(Activity.java:5231) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 07-13 15:04:13.777: E/AndroidRuntime(3551): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 07-13 15:04:13.777: E/AndroidRuntime(3551): ... 11 more 07-13 15:04:18.007: I/Process(3551): Sending signal. PID: 3551 SIG: 9 07-13 15:15:03.637: D/AndroidRuntime(3601): Shutting down VM 07-13 15:15:03.637: W/dalvikvm(3601): threadid=1: thread exiting with uncaught exception (group=0xb1ab3ba8) 07-13 15:15:03.717: E/AndroidRuntime(3601): FATAL EXCEPTION: main 07-13 15:15:03.717: E/AndroidRuntime(3601): Process: com.example.crystalball, PID: 3601 07-13 15:15:03.717: E/AndroidRuntime(3601): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.crystalball/com.example.crystalball.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread.access$800(ActivityThread.java:135) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.os.Handler.dispatchMessage(Handler.java:102) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.os.Looper.loop(Looper.java:136) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread.main(ActivityThread.java:5017) 07-13 15:15:03.717: E/AndroidRuntime(3601): at java.lang.reflect.Method.invokeNative(Native Method) 07-13 15:15:03.717: E/AndroidRuntime(3601): at java.lang.reflect.Method.invoke(Method.java:515) 07-13 15:15:03.717: E/AndroidRuntime(3601): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 07-13 15:15:03.717: E/AndroidRuntime(3601): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 07-13 15:15:03.717: E/AndroidRuntime(3601): at dalvik.system.NativeStart.main(Native Method) 07-13 15:15:03.717: E/AndroidRuntime(3601): Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:111) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98) 07-13 15:15:03.717: E/AndroidRuntime(3601): at com.example.crystalball.MainActivity.onCreate(MainActivity.java:15) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.Activity.performCreate(Activity.java:5231) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 07-13 15:15:03.717: E/AndroidRuntime(3601): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 07-13 15:15:03.717: E/AndroidRuntime(3601): ... 11 more 07-13 15:20:04.067: I/Process(3601): Sending signal. PID: 3601 SIG: 9

3 Answers

Ramya reddy
PLUS
Ramya reddy
Courses Plus Student 1,746 Points
Ramya reddy
Ramya reddy
Courses Plus Student 1,746 Points

this happened to me too. I was following the instructions as is and it stopped working.

Elijah Thompson
Elijah Thompson
546 Points

did you fix it?

Ramya reddy
PLUS
Ramya reddy
Courses Plus Student 1,746 Points
Ramya reddy
Ramya reddy
Courses Plus Student 1,746 Points

No couldn't get it fixed. Hoping that someone in the forum will have instructions.

Elijah Thompson
Elijah Thompson
546 Points

emulator doesnt work, used my phone to run the apps

Gunjeet Hattar
Gunjeet Hattar
14,483 Points
Gunjeet Hattar
Gunjeet Hattar
14,483 Points

Here is what you need to do

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.