Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialzaki bhai
163 PointsCould not find class 'android.graphics.drawable.RippleDrawable'
I get this error
09-10 09:12:25.393 597-597/? E/Zygote: Zygote: error closing descriptor
libcore.io.ErrnoException: close failed: EBADF (Bad file number)
at libcore.io.Posix.close(Native Method)
at libcore.io.BlockGuardOs.close(BlockGuardOs.java:75)
at com.android.internal.os.ZygoteInit.closeServerSocket(ZygoteInit.java:221)
at com.android.internal.os.ZygoteConnection.handleChildProc(ZygoteConnection.java:879)
at com.android.internal.os.ZygoteConnection.runOnce(ZygoteConnection.java:242)
at com.android.internal.os.ZygoteInit.runSelectLoop(ZygoteInit.java:715)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:651)
at dalvik.system.NativeStart.main(Native Method)
09-10 09:12:28.814 597-597/com.zakawat.interactivestory E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering
09-10 09:12:29.622 597-597/com.zakawat.interactivestory E/ffi_jank: timespan = 59.54523
09-10 09:12:29.980 597-597/com.zakawat.interactivestory E/ffi_jank: timespan = 18.947845
09-10 09:17:21.292 597-597/com.zakawat.interactivestory E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.zakawat.interactivestory, PID: 597
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.zakawat.interactivestory/com.zakawat.interactivestory.ui.StoryActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2358)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2410)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5388)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:655)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.zakawat.interactivestory.ui.StoryActivity.loadPage(StoryActivity.java:60)
at com.zakawat.interactivestory.ui.StoryActivity.onCreate(StoryActivity.java:50)
at android.app.Activity.performCreate(Activity.java:5280)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2322)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2410)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5388)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:655)
at dalvik.system.NativeStart.main(Native Method)
when compiler reach Drawable image line:
private void loadPage(int pageNumber) {
pageStack.push(pageNumber);
final Page page = story.getPage(pageNumber);
Drawable image = ContextCompat.getDrawable(this, page.getImageId()); //Error Line
storyImageView.setImageDrawable(image);
String pageText = getString(page.getTextId());
pageText = String.format(pageText, name);
storyTextView.setText(pageText);
After Debugging for a while I found this