【发布时间】:2017-04-25 12:37:10
【问题描述】:
背景:
我正在使用 Xamarin.Forms 创建一个内部移动应用程序,通过网络链接分发。我已经启动并运行了几天的 Android 和 iOS,但请求是针对推送通知提出的。我们决定与 Pushwoosh 一起提供该服务。
我从 pushwoosh 复制了示例代码并使用我们的包名和密钥对其进行了修改,但由于某种原因我收到错误:The application could not be started. Ensure that the application has been installed to the target device and has a launchable activity (MainLauncher = true).
Additionally, check Build->Configuration Manager to ensure this project is set to Deploy for this configuration.
我还应该注意到 Pushwoosh 使用 GCM,因此它也可能与此有关。
我的尝试:
1.我的第一步显然是检查配置管理器。它确实设置为 Deploy 并且设置为编译 x86(对提到的其他问题的一些其他答案)
2. 我确认我的 MainActivity.cs 文件中的活动是 indead 设置的 MainLauncher=true。
3.根据其他问题/答案的建议,我已从虚拟 android 中删除了该应用程序。 (实际上我完全重置了虚拟设备)。
4. 正如一些 GCM 特定的 QA 中提到的,我已将我的包名称更改为全小写。
我的相关代码:
[Activity(Label = "mobile", Icon = "@drawable/icon", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
[IntentFilter(new string[] { "company.MESSAGE" }, Categories = new string[] { "android.intent.category.DEFAULT" })]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsApplicationActivity
{
LocalMessageBroadcastReceiver mMessageReceiver;
LocalRegisterBroadcastReceiver mRegisterReceiver;
bool mBroadcastPush = true;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
mMessageReceiver = new LocalMessageBroadcastReceiver();
mMessageReceiver.activity = this;
mRegisterReceiver = new LocalRegisterBroadcastReceiver();
mRegisterReceiver.activity = this;
registerReceivers();
PushManager manager = PushManager.GetInstance(this);
manager.OnStartup(this);
//Register for push!
manager.RegisterForPushNotifications();
checkMessage(Intent);
global::Xamarin.Forms.Forms.Init(this, bundle);
LoadApplication(new App());
}
protected override void OnNewIntent(Intent intent)
{
checkMessage(intent);
}
public void checkMessage(Intent intent)
{
if (null != intent)
{
if (intent.HasExtra(PushManager.PushReceiveEvent))
{
doOnMessageReceive(intent.Extras.GetString(PushManager.PushReceiveEvent));
}
else if (intent.HasExtra(PushManager.RegisterEvent))
{
doOnRegistered(intent.Extras.GetString(PushManager.RegisterEvent));
}
else if (intent.HasExtra(PushManager.UnregisterEvent))
{
doOnUnregisteredError(intent.Extras.GetString(PushManager.UnregisterEvent));
}
else if (intent.HasExtra(PushManager.RegisterErrorEvent))
{
doOnRegisteredError(intent.Extras.GetString(PushManager.RegisterErrorEvent));
}
else if (intent.HasExtra(PushManager.UnregisterErrorEvent))
{
doOnUnregistered(intent.Extras.GetString(PushManager.UnregisterErrorEvent));
}
resetIntentValues();
}
}
public void doOnRegistered(String registrationId)
{
// code to run if device has succesfully registered
}
public void doOnRegisteredError(String errorId)
{
// code to run if device failed to register
}
public void doOnUnregistered(String registrationId)
{
// code to run if device has succesfully unregistered
}
public void doOnUnregisteredError(String errorId)
{
// code to run if device failed to unregister properly
}
public void doOnMessageReceive(String message)
{
// code to run when device receives notification
}
private void resetIntentValues()
{
Intent mainAppIntent = Intent;
if (mainAppIntent.HasExtra(PushManager.PushReceiveEvent))
{
mainAppIntent.RemoveExtra(PushManager.PushReceiveEvent);
}
else if (mainAppIntent.HasExtra(PushManager.RegisterEvent))
{
mainAppIntent.RemoveExtra(PushManager.RegisterEvent);
}
else if (mainAppIntent.HasExtra(PushManager.UnregisterEvent))
{
mainAppIntent.RemoveExtra(PushManager.UnregisterEvent);
}
else if (mainAppIntent.HasExtra(PushManager.RegisterErrorEvent))
{
mainAppIntent.RemoveExtra(PushManager.RegisterErrorEvent);
}
else if (mainAppIntent.HasExtra(PushManager.UnregisterErrorEvent))
{
mainAppIntent.RemoveExtra(PushManager.UnregisterErrorEvent);
}
Intent = mainAppIntent;
}
protected override void OnResume()
{
base.OnResume();
registerReceivers();
}
protected override void OnPause()
{
base.OnPause();
unregisterReceivers();
}
public void registerReceivers()
{
IntentFilter intentFilter = new IntentFilter(PackageName + ".action.PUSH_MESSAGE_RECEIVE");
if (mBroadcastPush)
{
RegisterReceiver(mMessageReceiver, intentFilter);
}
RegisterReceiver(mRegisterReceiver, new IntentFilter(PackageName + "." + PushManager.RegisterBroadCastAction));
}
public void unregisterReceivers()
{
UnregisterReceiver(mMessageReceiver);
UnregisterReceiver(mRegisterReceiver);
}
}
1
我承认我是 android 开发的新手(但不是 .net 或 C#),所以这可能是相对明显的,但我不知所措。我已经查看了我能找到的与此相关的所有问题,但没有一个解决方案有帮助。谁能看到我做错了什么?
【问题讨论】:
-
再次检查您的最终清单
obj\Debug\android是否没有为不同的活动设置两个主要启动器。否则,请尝试攻击您的bin/obj。
标签: android xamarin google-cloud-messaging pushwoosh