Question

当我运行我的应用程序并从我的微调器中选择一个项目而不是打开一个类似应用程序崩溃的新类时我遇到了问题，我想知道是否有人可以帮助我解决为什么会发生这种情况。我不确定要包含哪些代码部分，因此我将包含Logcat，如果您请求任何代码，我将编辑此帖子。

感谢。

logcat的：

03-09 15:36:53.814: E/AndroidRuntime(13429): FATAL EXCEPTION: main
03-09 15:36:53.814: E/AndroidRuntime(13429): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.famouspeople/com.example.famouspeople.SeanConnery}: java.lang.NullPointerException
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread.access$600(ActivityThread.java:140)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.os.Looper.loop(Looper.java:137)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread.main(ActivityThread.java:4898)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at java.lang.reflect.Method.invokeNative(Native Method)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at java.lang.reflect.Method.invoke(Method.java:511)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at dalvik.system.NativeStart.main(Native Method)
03-09 15:36:53.814: E/AndroidRuntime(13429): Caused by: java.lang.NullPointerException
03-09 15:36:53.814: E/AndroidRuntime(13429):    at com.example.famouspeople.SeanConnery.initialize(SeanConnery.java:44)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at com.example.famouspeople.SeanConnery.onCreate(SeanConnery.java:28)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.Activity.performCreate(Activity.java:5206)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
03-09 15:36:53.814: E/AndroidRuntime(13429):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
03-09 15:36:53.814: E/AndroidRuntime(13429):    ... 11 more

Answer 1

通常当应用程序因单击微调器而崩溃时，问题在于您用来填充微调器的适配器，请仔细检查您定义的apapter的长度。请遵循此代码

 int num = SpinnerData.length;
    SpinnerData = new String[num];
Log.d("ArrayAdapter",""+ SpinnerData.length);
                    ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(CurrentActivity.this, android.R.layout.simple_list_item_1, SpinnerData);
                    //spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                    spinner.setAdapter(spinnerArrayAdapter);

仔细检查长度..我希望这个帮助

应用程序崩溃，如何解决？

1 个答案: