小编Use*_* 10的帖子

我在运行时收到此错误.

java.lang.RuntimeException:无法启动活动ComponentInfo android.util.AndroidRuntimeException:在添加内容之前必须调用requestFeature()

堆栈跟踪:

01-22 04:55:59.728: E/AndroidRuntime(2443): FATAL EXCEPTION: main
01-22 04:55:59.728: E/AndroidRuntime(2443): Process: com.qrme.quranmadeeasy, PID: 2443
01-22 04:55:59.728: E/AndroidRuntime(2443): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.qrme.quranmadeeasy/com.qrme.quranmadeeasy.ChapterActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setBackgroundDrawable(android.graphics.drawable.Drawable)' on a null object reference
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.app.ActivityThread.access$800(ActivityThread.java:144)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.os.Handler.dispatchMessage(Handler.java:102)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.os.Looper.loop(Looper.java:135)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at android.app.ActivityThread.main(ActivityThread.java:5221)
01-22 04:55:59.728: E/AndroidRuntime(2443):     at java.lang.reflect.Method.invoke(Native Method) …

我在运行时收到此错误.

java.lang.RuntimeException:无法恢复活动java.lang.NullPointerException:尝试在空对象引用上调用虚方法'void android.app.ActionBar.setDisplayShowHomeEnabled(boolean)'

堆栈跟踪:

01-22 06:32:55.509: E/AndroidRuntime(3728): FATAL EXCEPTION: main
01-22 06:32:55.509: E/AndroidRuntime(3728): Process: com.qrme.quranmadeeasy, PID: 3728
01-22 06:32:55.509: E/AndroidRuntime(3728): java.lang.RuntimeException: Unable to resume activity {com.qrme.quranmadeeasy/com.qrme.quranmadeeasy.InnerPageActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayShowHomeEnabled(boolean)' on a null object reference
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2951)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2982)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2365)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread.access$800(ActivityThread.java:144)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.os.Handler.dispatchMessage(Handler.java:102)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.os.Looper.loop(Looper.java:135)
01-22 06:32:55.509: E/AndroidRuntime(3728):     at android.app.ActivityThread.main(ActivityThread.java:5221)
01-22 …