[英]ArrayAdapter with Spinner returning android.content.res.Resources$NotFoundException
[英]Resources NotFoundException for Spinner Android
我有一個有Button的活動。 單擊Button時,應該打開一個包含TextView和Spinner的簡單彈出窗口。 我的彈出窗口很好。 我的問題是,當我獲取Spinner的引用時,它給了我一個Resources $ NotFoundException,並說資源ID無效。
我正在調用popupView.findViewById(R.layout.popup_create_workout)來嘗試獲取對微調器的引用。 我也嘗試抓取對彈出窗口使用的父XML布局的引用,並在其上調用finViewById(例如exampleView.findViewById(R.layout.example_popup_view)。我也試過了普通的'findViewById(R.layout.example_popup_view) (我不希望它工作)。但是,這兩種技術都會在View ID上或者在Spinner上調用setAdapter()時拋出NullPointerExceptions。我已經嘗試在Eclipse中清理項目,仔細檢查以確保我正在使用正確的參考ID,上下文等。
讓我循環的真正原因是我能夠從相同的XML布局中獲取對TextView的引用並對其進行操作。 我在這個網站上搜索過,發現了一些類似的問題,但沒有一個是我需要的。 我也用Google搜索了所有我想不到的運氣。
所以,我的qeustion是:當我嘗試獲取對微調器的引用時,為什么我得到一個Resources $ NotFoundException? 我知道這可能很容易,但我似乎無法弄明白。 在此先感謝您的幫助!
以下是與微調器有關的活動部分:
@Override
public void onClick(View v) {
LayoutInflater inflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = inflater.inflate(R.layout.popup_add_goal, null);
PopupWindow popupWindow = new PopupWindow(popupView);
popupWindow.setWidth(240);
popupWindow.setHeight(447);
popupWindow.update();
popupWindow.showAtLocation(v, Gravity.CENTER, 0, 0);
ArrayList<String> list = new ArrayList<String>();
list.add("Item 1");
list.add("Item 2");
list.add("Item 3");
Spinner spinner = (Spinner) popupView.findViewById(R.id.goal_spinner);
ArrayAdapter<ArrayList<String>> arrayAdapter = new ArrayAdapter<ArrayList<String>>(WorkoutActivity.context, R.id.list_content_white);
arrayAdapter.add(list);
spinner.setAdapter(arrayAdapter);
}
});
和XML布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#CCff0000" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Add goals"
android:textColor="#ffffff"
android:textSize="48sp" />
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:text="Search for a goal"
android:textColor="#ffffff"
android:textSize="40sp"
android:gravity="center" />
<Spinner android:id="@+id/goal_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff" />
</LinearLayout>
最后,堆棧跟蹤:
12-29 03:51:14.832: E/AndroidRuntime(5216): FATAL EXCEPTION: main
12-29 03:51:14.832: E/AndroidRuntime(5216): android.content.res.Resources$NotFoundException: Resource ID #0x7f09001a type #0x12 is not valid
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.content.res.Resources.loadXmlResourceParser(Resources.java:2144)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.content.res.Resources.getLayout(Resources.java:853)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:371)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:193)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.Spinner.onMeasure(Spinner.java:439)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.View.measure(View.java:15513)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.View.measure(View.java:15513)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.View.measure(View.java:15513)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.Choreographer.doFrame(Choreographer.java:532)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.os.Handler.handleCallback(Handler.java:725)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.os.Handler.dispatchMessage(Handler.java:92)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.os.Looper.loop(Looper.java:137)
12-29 03:51:14.832: E/AndroidRuntime(5216): at android.app.ActivityThread.main(ActivityThread.java:5039)
12-29 03:51:14.832: E/AndroidRuntime(5216): at java.lang.reflect.Method.invokeNative(Native Method)
12-29 03:51:14.832: E/AndroidRuntime(5216): at java.lang.reflect.Method.invoke(Method.java:511)
12-29 03:51:14.832: E/AndroidRuntime(5216): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-29 03:51:14.832: E/AndroidRuntime(5216): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
12-29 03:51:14.832: E/AndroidRuntime(5216): at dalvik.system.NativeStart.main(Native Method)
這是包含list_content_white的布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/list_content_white"
android:textColor="#ffffff"
android:textSize="30sp"
android:textStyle="bold"
android:layout_margin="8dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
我不確定導致異常的原因,但可能是這個。 更改:
ArrayAdapter<ArrayList<String>> arrayAdapter = new ArrayAdapter<ArrayList<String>>(WorkoutActivity.context, R.id.list_content_white);
arrayAdapter.add(list);
至:
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(WorkoutActivity.this, R.id.list_content_white, list);
// This is wrong, see below ^^^^
ArrayAdapter已經需要一個ArrayList,你只需要提供ArrayList的子類型。
根本問題
將您的布局文件命名為與View的ID相同的名稱存在輕微危險......您已找到它。 您希望在初始化ArrayAdapter時使用R.layout.list_content_white
而不是 R.id.list_content_white
。
把它放在onCreate()的兩行中
LayoutInflater inflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = inflater.inflate(R.layout.popup_add_goal, null);
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