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我試圖用Xamarin和Visual Studio創建一個Android應用程序。 突然在使用SetSupportActionBar函數時出現奇怪的錯誤。SetSupportActionBar在Visual Studio和Xamarin中崩潰
這是我的XML代碼：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Dark" />
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
.
.
.
</RelativeLayout>
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#818181"
android:dividerHeight="1dp"
android:background="#E3F2FD" />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
這是我的C＃文件中的代碼：
using System;
using System.Collections.Generic;
using System.Linq;
using Android.App;
using Android.OS;
using Android.Widget;
using SupportToolBar = Android.Support.V7.Widget.Toolbar;
using Android.Support.V7.App;
using Android.Support.V4.Widget;
using Android.Locations;
using System.Net;
namespace IBuy
{
[Activity(Label = "Main Screen", Theme = "@style/MyTheme")]
public class MainScreen : ActionBarActivity, ILocationListener
{
private SupportToolBar mToolbar;
private MyActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ListView mLeftDrawer;
private int userID, storeID, permission;
private LocationManager locationManager;
private string deviceID = Build.Serial;
private double currentX = 0, currentY = 0;
private bool sent = false;
private ProgressBar pBar;
private TextView txt;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.MainScreen);
Title = GetString(Resource.String.main_screen);
try
{
mToolbar = FindViewById<SupportToolBar>(Resource.Id.toolbar);
mDrawerLayout = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);
mLeftDrawer = FindViewById<ListView>(Resource.Id.left_drawer);
SetSupportActionBar(mToolbar);
}
catch (Exception ex)
{
Console.WriteLine("@@@@@@@@@@@@@@@@@@@");
Console.WriteLine(ex.Message);
Console.WriteLine(ex.InnerException);
Console.WriteLine(ex.Data);
Console.WriteLine(ex.Source);
Console.WriteLine(ex.StackTrace);
Console.WriteLine(ex.ToString());
Console.WriteLine("#################");
}
mDrawerToggle = new MyActionBarDrawerToggle(this, mDrawerLayout, Resource.String.openDrawer, Resource.String.closeDrawer);
mDrawerLayout.SetDrawerListener(mDrawerToggle);
SupportActionBar.SetHomeButtonEnabled(true);
SupportActionBar.SetDisplayShowTitleEnabled(true);
mDrawerToggle.SyncState();
.
.
.
}
}
}
奇怪的是，當談到此命令的應用程序崩潰：SetSupportActionBar（mToolbar ）;
這是我得到的異常：
Exception of type 'Java.Lang.IllegalStateException' was thrown.
09-26 12:09:03.399 I/mono-stdout(13640): Exception of type 'Java.Lang.IllegalStateException' was thrown.
System.Collections.Generic.Dictionary`2[System.Object,System.Object]
09-26 12:09:05.849 I/mono-stdout(13640): System.Collections.Generic.Dictionary`2[System.Object,System.Object]
mscorlib
09-26 12:09:07.468 I/mono-stdout(13640): mscorlib
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/1978/f98871a9/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61
09-26 12:09:09.037 I/mono-stdout(13640): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/1978/f98871a9/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61
09-26 12:09:09.038 I/mono-stdout(13640): at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (IntPtr jobject, IntPtr jclass, IntPtr jmethod, Android.Runtime.JValue* parms) [0x00084] in /Users/builder/data/lanes/1978/f98871a9/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:1029
at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (IntPtr jobject, IntPtr jclass, IntPtr jmethod, Android.Runtime.JValue* parms) [0x00084] in /Users/builder/data/lanes/1978/f98871a9/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:1029
at Android.Support.V7.App.AppCompatActivity.SetSupportActionBar (Android.Support.V7.Widget.Toolbar toolbar) [0x00091] in <filename unknown>:0
at IBuy.MainScreen.OnCreate (Android.OS.Bundle bundle) [0x0005b] in C:\Users\איציק\Source\Workspaces\iBuy\IBuy\IBuy\Screens\MainScreen.cs:42
--- End of managed exception stack trace ---
java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:193)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:96)
at md5f6ea2975de2355cb6a
09-26 12:09:09.038 I/mono-stdout(13640): at Android.Support.V7.App.AppCompatActivity.SetSupportActionBar (Android.Support.V7.Widget.Toolbar toolbar) [0x00091] in <filename unknown>:0
09-26 12:09:09.038 I/mono-stdout(13640): at IBuy.MainScreen.OnCreate (Android.OS.Bundle bundle) [0x0005b] in C:\Users\איציק\Source\Workspaces\iBuy\IBuy\IBuy\Screens\MainScreen.cs:42
574b5b4ea31e7d.MainScreen.n_onCreate(Native Method)
at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.onCreate(MainScreen.java:36)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2418)
at android.app.ActivityThread.access$900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5289)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
09-26 12:09:09.038 I/mono-stdout(13640): --- End of managed exception stack trace ---
09-26 12:09:09.038 I/mono-stdout(13640): java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
09-26 12:09:09.039 I/mono-stdout(13640): at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:193)
09-26 12:09:09.039 I/mono-stdout(13640): at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:96)
09-26 12:09:09.039 I/mono-stdout(13640): at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.n_onCreate(Native Method)
09-26 12:09:09.039 I/mono-stdout(13640): at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.onCreate(MainScreen.java:36)
09-26 12:09:09.040 I/mono-stdout(13640): at android.app.Activity.performCreate(Activity.java:5990)
09-26 12:09:09.040 I/mono-stdout(13640): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
09-26 12:09:09.040 I/mono-stdout(13640): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
09-26 12:09:09.041 I/mono-stdout(13640): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2418)
09-26 12:09:09.041 I/mono-stdout(13640): at android.app.ActivityThread.access$900(ActivityThread.java:154)
09-26 12:09:09.042 I/mono-stdout(13640): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
09-26 12:09:09.042 I/mono-stdout(13640): at android.os.Handler.dispatchMessage(Handler.java:102)
09-26 12:09:09.042 I/mono-stdout(13640): at android.os.Looper.loop(Looper.java:135)
09-26 12:09:09.042 I/mono-stdout(13640): at android.app.ActivityThread.main(ActivityThread.java:5289)
09-26 12:09:09.042 I/mono-stdout(13640): at java.lang.reflect.Method.invoke(Native Method)
09-26 12:09:09.042 I/mono-stdout(13640): at java.lang.reflect.Method.invoke(Method.java:372)
09-26 12:09:09.042 I/mono-stdout(13640): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
09-26 12:09:09.042 I/mono-stdout(13640): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
09-26 12:09:10.509 I/mono-stdout(13640): Java.Lang.IllegalStateException: Exception of type 'Java.Lang.IllegalStateException' was thrown.
Java.Lang.IllegalStateException: Exception of type 'Java.Lang.IllegalStateException' was thrown.
09-26 12:09:10.515 I/mono-stdout(13640): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/1978/f98871a9/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/1978/f98871a9/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61
09-26 12:09:10.517 I/mono-stdout(13640): at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (IntPtr jobject, IntPtr jclass, IntPtr jmethod, Android.Runtime.JValue* parms) [0x00084] in /Users/builder/data/lanes/1978/f98871a9/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:1029
at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (IntPtr jobject, IntPtr jclass, IntPtr jmethod, Android.Runtime.JValue* parms) [0x00084] in /Users/builder/data/lanes/1978/f98871a9/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:1029
at Android.Support.V7.App.AppCompatActivity.SetSupportActionBar (Android.Support.V7.Widget.Toolbar toolbar) [0x00091] in <filename unknown>:0
09-26 12:09:10.518 I/mono-stdout(13640): at Android.Support.V7.App.AppCompatActivity.SetSupportActionBar (Android.Support.V7.Widget.Toolbar toolbar) [0x00091] in <filename unknown>:0
at IBuy.MainScreen.OnCreate (Android.OS.Bundle bundle) [0x0005b] in C:\Users\איציק\Source\Workspaces\iBuy\IBuy\IBuy\Screens\MainScreen.cs:42
--- End of managed exception stack trace ---
09-26 12:09:10.520 I/mono-stdout(13640): at IBuy.MainScreen.OnCreate (Android.OS.Bundle bundle) [0x0005b] in C:\Users\איציק\Source\Workspaces\iBuy\IBuy\IBuy\Screens\MainScreen.cs:42
java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:193)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:96)
at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.n_onCreate(Native Method)
at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.onCreate(MainScreen.java:36)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2418)
09-26 12:09:10.520 I/mono-stdout(13640): --- End of managed exception stack trace ---
at android.app.ActivityThread.access$900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
09-26 12:09:10.523 I/mono-stdout(13640): java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
at android.app.ActivityThread.main(ActivityThread.java:5289)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
09-26 12:09:10.523 I/mono-stdout(13640): at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:193)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
09-26 12:09:10.524 I/mono-stdout(13640): at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:96)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
09-26 12:09:10.529 I/mono-stdout(13640): at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.n_onCreate(Native Method)
09-26 12:09:10.529 I/mono-stdout(13640): at md5f6ea2975de2355cb6a574b5b4ea31e7d.MainScreen.onCreate(MainScreen.java:36)
09-26 12:09:10.530 I/mono-stdout(13640): at android.app.Activity.performCreate(Activity.java:5990)
09-26 12:09:10.531 I/mono-stdout(13640): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
09-26 12:09:10.532 I/mono-stdout(13640): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2309)
09-26 12:09:10.534 I/mono-stdout(13640): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2418)
09-26 12:09:10.535 I/mono-stdout(13640): at android.app.ActivityThread.access$900(ActivityThread.java:154)
09-26 12:09:10.536 I/mono-stdout(13640): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
09-26 12:09:10.537 I/mono-stdout(13640): at android.os.Handler.dispatchMessage(Handler.java:102)
09-26 12:09:10.539 I/mono-stdout(13640): at android.os.Looper.loop(Looper.java:135)
09-26 12:09:10.543 I/mono-stdout(13640): at java.lang.reflect.Method.invoke(Native Method)
09-26 12:09:10.544 I/mono-stdout(13640): at java.lang.reflect.Method.invoke(Method.java:372)
09-26 12:09:10.546 I/mono-stdout(13640): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
09-26 12:09:10.547 I/mono-stdout(13640): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
它之前工作得很好，我不記得改變任何事情，可以使其崩潰。
有人可以給我一個小費怎麼辦？
預先感謝您！
也許你應該使用' FindViewById（..）'而不是'SupportToolBar'。否則，請顯示異常情況，這有助於瞭解發生了什麼問題 –
Joehl