Android Spinner動態更改項目

我想在我的應用程序中使用微調器。 Spinner的上下文（項目）取決於在應用程序的設置中完成的用戶首選項。Android Spinner動態更改項目

我創建了沒有項目的微調。加載應用程序後，微調器有一個條目。要獲取條目，用戶必須進入菜單並加載圖像。基於這些項目被加載到一個字符串數組。這個字符串數組將被交給適配器。見代碼：

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);

完成此操作後。用戶將返回到菜單設置。點擊菜單設置設備的返回按鈕，導致應用程序中止。

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)

我在做什麼錯？是不是可以在應用程序的菜單設置中設置微調項目？

來源

2013-05-16 Irgendw Pointer

您可以嘗試以下代碼以動態添加項目在微調框中。

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();

來源

2013-05-16 13:59:03 Sandeep

這是工作。非常感謝你！ –

是否需要創建一個新的ArrayAdapter？我們不能使用現有的，只是給它分配新的ArrayList /值？ –

試圖改變這一點：

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

到這一點：

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

來源

2013-05-16 13:27:49 vmathieu

這並沒有帶來什麼。它仍然是一樣的錯誤。 –

見ArrayAdapter的javadoc。

textViewResourceId包含要在實例化視圖時使用的 TextView的佈局文件的資源ID。

來源

2013-05-16 13:34:00 pskink

微調器沒有textView。我使用String.xml中的數組作爲資源。我也嘗試使用佈局ID和Spinner的ID。結果總是一樣的。 –

是的，它已經改變了R.array.flooritem到android.R.layout.simple_spinner_item並且看到了區別 – pskink

對不起，剛剛看到你的答案了。它是用sandeep的答案解決的。 –

Android Spinner動態更改項目

回答

相關問題