Android Spinner动态更改项目

我想在我的应用程序中使用微调器。 Spinner的上下文（项目）取决于在应用程序的设置中完成的用户首选项。Android Spinner动态更改项目

我创建了没有项目的微调。加载应用程序后，微调器有一个条目。要获取条目，用户必须进入菜单并加载图像。基于这些项目被加载到一个字符串数组。这个字符串数组将被交给适配器。见代码：

List<String> als = new ArrayList<String>(); 
als = Arrays.asList(Data.getfloornames()); 
adapter = new ArrayAdapter<String>(this, R.array.flooritem, als); 
adapter.notifyDataSetChanged(); 
floornum.setAdapter(adapter);

完成此操作后。用户将返回到菜单设置。点击菜单设置设备的返回按钮，导致应用程序中止。

Error from Logcat is FATAL Exception: main. 
05-16 15:12:43.193: E/AndroidRuntime(9128): android.content.res.Resources$NotFoundException: Resource ID #0x7f060002 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.content.res.Resources.getValue(Resources.java:1014) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.content.res.Resources.loadXmlResourceParser(Resources.java:2139) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.content.res.Resources.getLayout(Resources.java:853) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.LayoutInflater.inflate(LayoutInflater.java:394) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:371) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:193) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.Spinner.onMeasure(Spinner.java:439) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:681) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:681) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2176) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.View.measure(View.java:15518) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.Choreographer.doFrame(Choreographer.java:532) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.os.Handler.handleCallback(Handler.java:725) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.os.Handler.dispatchMessage(Handler.java:92) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.os.Looper.loop(Looper.java:137) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at java.lang.reflect.Method.invoke(Method.java:511) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
05-16 15:12:43.193: E/AndroidRuntime(9128):  at dalvik.system.NativeStart.main(Native Method)

我在做什么错？是不是可以在应用程序的菜单设置中设置微调项目？

来源

2013-05-16 Irgendw Pointer

您可以尝试以下代码以动态添加项目在微调框中。

Spinner spinner = (Spinner)findViewById(R.id.mySpinner); 
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, android.R.id.text1); 
spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
spinner.setAdapter(spinnerAdapter); 
spinnerAdapter.add("value"); 
spinnerAdapter.notifyDataSetChanged();

来源

2013-05-16 13:59:03 Sandeep

这是工作。非常感谢你！ –

是否需要创建一个新的ArrayAdapter？我们不能使用现有的，只是给它分配新的ArrayList /值？ –

试图改变这一点：

adapter.notifyDataSetChanged(); 
floornum.setAdapter(adapter);

到这一点：

floornum.setAdapter(adapter); 
adapter.notifyDataSetChanged();

来源

2013-05-16 13:27:49 vmathieu

这并没有带来什么。它仍然是一样的错误。 –

见ArrayAdapter的javadoc。

textViewResourceId包含要在实例化视图时使用的 TextView的布局文件的资源ID。

来源

2013-05-16 13:34:00 pskink

微调器没有textView。我使用String.xml中的数组作为资源。我也尝试使用布局ID和Spinner的ID。结果总是一样的。 –

是的，它已经改变了R.array.flooritem到android.R.layout.simple_spinner_item并且看到了区别 – pskink

对不起，刚刚看到你的答案了。它是用sandeep的答案解决的。 –

Android Spinner动态更改项目

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