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我寫在Xamarin的應用程序爲Android,一切都很順利,但突然之間,我得到這個「java.lang.illegalStateExeption錯誤,當我運行程序Xamarin的Android Theme.AppCompat例外
我對可能導致這種情況的代碼沒有做任何事情,我甚至回到了我備份的程序的副本,在那裏我知道沒有任何錯誤,並且它是仍然拋出異常
在OnCreate方法的第一行拋出異常,在這裏:
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState); // error thrown here
,這是錯誤:
You need to use a Theme.AppCompat theme (or descendant) with this activity.
在主要活動的頂部,我宣佈一個程序兼容性主題,像這樣:
[Activity(Label = "FrogPoint", Theme = "@style/Theme.AppCompat.Light", LaunchMode = LaunchMode.SingleTask, ScreenOrientation = ScreenOrientation.Portrait)] //master copy
public class MainActivity : ActionBarActivity, IBeaconConsumer
{
這使我瘋狂,特別是因爲它剛剛開始發生沒有明顯的原因。每次運行應用程序時,都會拋出錯誤。
我曾經嘗試都用,如果沒有,在Android清單如下:
<activity android:name="MainActivity" android:theme="@style/Theme.AppCompat" android:label="@string/app_name"></activity>
這沒有什麼區別。
任何人都可以請幫忙嗎?
這裏是堆棧跟蹤:
java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:102)
at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58)
at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98)
at frogpoint.droid.MainActivity.n_onCreate(Native Method)
at frogpoint.droid.MainActivity.onCreate(MainActivity.java:41)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)