我開發了一個非常簡單的android應用程序,然後我混淆了代碼。當我可能替換char序列時,會拋出nullPointerException異常。nullPointerException當替換字符序列
這裏是我的堆棧跟蹤:
java.lang.NullPointerException
at com.xpandit.pemobile.android.loadactivity.ak.d(Unknown Source)
at com.xpandit.pemobile.android.loadactivity.g.onTextChanged(Unknown Source)
at android.widget.TextView.sendOnTextChanged(TextView.java:6335)
at android.widget.TextView.handleTextChanged(TextView.java:6376)
at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:6520)
at android.text.SpannableStringBuilder.sendTextChange(SpannableStringBuilder.java:889)
at android.text.SpannableStringBuilder.change(SpannableStringBuilder.java:352)
at android.text.SpannableStringBuilder.change(SpannableStringBuilder.java:269)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:432)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:409)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:28)
at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:583)
at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:174)
at com.android.internal.widget.EditableInputConnection.commitText(EditableInputConnection.java:120)
at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:257)
at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:77)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)
正如我所說的代碼混淆和映射文件我已經找到了正確的方法(至少我認爲)。問題是:在什麼情況下,替換方法會拋出一個空指針?
也許問題不在於替換方法!誰能告訴我問題在哪裏以及如何解決?在此先感謝...
編輯: 我認爲這個問題必須在如此簡單的指令。
if (aux.contains(" ")){
aux = aux.replace(" ", "%20");
}
有幾個問題......爲什麼要混淆代碼?我們如何在沒有代碼的情況下幫助你? – RoflcoptrException
你應該提供導致'NullPointerException'的代碼。請填寫代碼 – Michael
。 – user370305