我知道这里有很多类似的问题,但我无法将答案转移到我的问题(或者我没有找到我需要的答案......)
在我的 actionBar 菜单中(在 onOptionsItemSelected 中),我为用户设置打开了一个弹出窗口。Checkbox 和 RadioButtons 工作正常,但如果我在 Spinner 上进行选项卡,将会有一个 FATAL EXCEPTION:
FATAL EXCEPTION: main
android.view.WindowManager$BadTokenException: Unable to add window -- token android.view.ViewRootImpl$W@42766f00 is not valid; is your activity running?
这是onOptionsItemSelected
方法中的代码:
LayoutInflater inflaterSettings = LayoutInflater.from(context);
final LinearLayout llSettings = (LinearLayout) inflaterSettings.inflate(R.layout.actionbar_menu_settings_popup, null);
Spinner spinner = (Spinner) llSettings .findViewById(R.id.spinner_action_settings_intervall_values);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.action_settings_intervall_values, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id){ TODO}
@Override
public void onNothingSelected(AdapterView<?> parent) { // TODO }
});
PopupWindow popUp = new PopupWindow(context);
popUp.setContentView(llSettings);
llSettings.post(new Runnable()
{
@Override
public void run()
{
popUp.showAtLocation(llSettings, Gravity.CENTER, 0, 0);
int width = getResources().getDisplayMetrics().widthPixels;
int height = getResources().getDisplayMetrics().heightPixels;
width = (int) (width * 0.9);
height = (int) (height * 0.9);
popUp.update(width, height);
}
});
我的 actionbar_menu_settings_popup.xml:
<Spinner
android:id="@+id/spinner_action_settings_intervall_values"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawSelectorOnTop="true"
android:entries="@array/action_settings_intervall_values" />
在 string.xml 中:
<string-array name="action_settings_intervall_values">
<item>5</item>
<item>15</item>
<item>30</item>
<item>45</item>
<item>60</item>
<item>120</item>
<item>180</item>
</string-array>
编辑
登录onOptionsItemSelected
:
Log.i("MainActivity#onCreateOptionsItems", "context: " + context);
Log.i("MainActivity#onCreateOptionsItems", "getApplicationContext: " + getApplicationContext());
Log.i("MainActivity#onCreateOptionsItems", "this: " + this);
结果:
06-21 10:40:58.185: I/MainActivity#onCreateOptionsItems(14463): context: de.xy.app.activities.MainActivity@42743818
06-21 10:40:58.185: I/MainActivity#onCreateOptionsItems(14463): getApplicationContext: android.app.Application@42741d48
06-21 10:40:58.185: I/MainActivity#onCreateOptionsItems(14463): this: de.xy.app.activities.MainActivity@42743818