Question

我已经使用C＃和xamarin创建了一个andorid应用程序，我正在尝试使用一种方法，在调用时只需为不同的应用程序加载google play商店应用页面，但我没有太多的快乐。

这是我到目前为止所做的，但它不起作用，我想我可能走错了路。任何帮助将不胜感激。

    void BuyGameMenuItemSelected(object sender, PlayerIndexEventArgs e)
    {
        String appPackageName = "com.innervisionsoftware.visionthegame";
        AndroidGameActivity a = new AndroidGameActivity ();
        try
        {
            a.StartActivity(new Intent("ACTION_VIEW", Android.Net.Uri.Parse("market://details?id=" + appPackageName)));

        } 
        catch (Android.Content.ActivityNotFoundException anfe) 
        {
        //  a.StartActivity(new Intent("ACTION_VIEW", Android.Net.Uri.Parse("http://play.google.com/store/apps/details?id=" + appPackageName)));
        }
    }

================================

编辑：

我仍然遇到以下异常，不明白为什么。

Java.Lang.NullPointerException: 
  at at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (intptr,intptr,intptr,Android.Runtime.JValue[]) <IL 0x00085, 0x00318>
  at at Android.Content.ContextWrapper.StartActivity (Android.Content.Intent) <IL 0x000a9, 0x003ff>
  at Vision_Android.MainMenuScreen.BuyGameMenuItemSelected (object,Vision_Android.PlayerIndexEventArgs) [0x0000e] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\Screens\MainMenuScreen.cs:218
  at Vision_Android.MenuItem.OnSelectEntry (Microsoft.Xna.Framework.PlayerIndex) [0x0000e] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\ScreenManager\MenuItem.cs:138
  at Vision_Android.MenuItem.Update (Vision_Android.MenuScreen,bool,Microsoft.Xna.Framework.GameTime) [0x0009d] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\ScreenManager\MenuItem.cs:392
  at Vision_Android.MenuScreen.Update (Microsoft.Xna.Framework.GameTime,bool,bool) [0x0006a] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\ScreenManager\MenuScreen.cs:251
  at Vision_Android.MainMenuScreen.Update (Microsoft.Xna.Framework.GameTime,bool,bool) [0x00001] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\Screens\MainMenuScreen.cs:180
  at Vision_Android.ScreenManager.Update (Microsoft.Xna.Framework.GameTime) [0x000a5] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\ScreenManager\ScreenManager.cs:214
  at Microsoft.Xna.Framework.Game.<.cctor>b__19 (Microsoft.Xna.Framework.IUpdateable,Microsoft.Xna.Framework.GameTime) [0x00000] in c:\Users\calcof\Documents\GitHub\MonoGame\MonoGame.Framework\Game.cs:596
  at at Microsoft.Xna.Framework.Game/SortingFilteringCollection`1<Microsoft.Xna.Framework.IUpdateable>.ForEachFilteredItem<Microsoft.Xna.Framework.GameTime> (System.Action`2<Microsoft.Xna.Framework.IUpdateable, Microsoft.Xna.Framework.GameTime>,Microsoft.Xna.Framework.GameTime) <0x003a7>
  at Microsoft.Xna.Framework.Game.Update (Microsoft.Xna.Framework.GameTime) [0x00001] in c:\Users\calcof\Documents\GitHub\MonoGame\MonoGame.Framework\Game.cs:600
  at Vision_Android.Game.Update (Microsoft.Xna.Framework.GameTime) [0x00001] in c:\Users\calcof\Documents\Visual Studio 2012\Projects\Vision_Android_Lite\Vision\Game.cs:182
  at Microsoft.Xna.Framework.Game.DoUpdate (Microsoft.Xna.Framework.GameTime) [0x00022] in c:\Users\calcof\Documents\GitHub\MonoGame\MonoGame.Framework\Game.cs:690
  at Microsoft.Xna.Framework.Game.Tick () [0x00110] in c:\Users\calcof\Documents\GitHub\MonoGame\MonoGame.Framework\Game.cs:500
  at Microsoft.Xna.Framework.AndroidGameWindow.OnUpdateFrame (object,OpenTK.FrameEventArgs) [0x00065] in c:\Users\calcof\Documents\GitHub\MonoGame\MonoGame.Framework\Android\AndroidGameWindow.cs:90
  at at OpenTK.GameViewBase.OnUpdateFrame (OpenTK.FrameEventArgs) <IL 0x00014, 0x0008f>
  at at OpenTK.Platform.Android.AndroidGameView.UpdateFrameInternal (OpenTK.FrameEventArgs) <IL 0x00013, 0x000b3>
  at at OpenTK.Platform.Android.AndroidGameView.RunIteration (System.Threading.CancellationToken) <IL 0x00096, 0x003d3>
  at at OpenTK.Platform.Android.AndroidGameView/<StartThread>c__AnonStorey0.<>m__0 (object) <IL 0x0000d, 0x00077>
  at at Android.App.SyncContext/<Send>c__AnonStorey1.<>m__0 () <IL 0x0000c, 0x0005b>
  at at Java.Lang.Thread/RunnableImplementor.Run () <IL 0x00011, 0x00097>
  at at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) <IL 0x0000a, 0x000a3>
  at at (wrapper dynamic-method) object.efceb458-16eb-42a8-a5bd-ce69af2b2929 (intptr,intptr) <IL 0x00011, 0x0003b>
  at --- End of managed exception stack trace ---
  at java.lang.NullPointerException
  at at android.app.Activity.startActivityForResult(Activity.java:3388)
  at at android.app.Activity.startActivityForResult(Activity.java:3349)
  at at android.app.Activity.startActivity(Activity.java:3584)
  at at android.app.Activity.startActivity(Activity.java:3552)
  at at mono.java.lang.RunnableImplementor.n_run(Native Method)
  at at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:29)
  at at android.os.Handler.handleCallback(Handler.java:725)
  at at android.os.Handler.dispatchMessage(Handler.java:92)
  at at android.os.Looper.loop(Looper.java:153)
  at at android.app.ActivityThread.main(ActivityThread.java:5299)
  at at java.lang.reflect.Method.invokeNative(Native Method)
  at at java.lang.reflect.Method.invoke(Method.java:511)
  at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
  at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
  at at dalvik.system.NativeStart.main(Native Method)

Answer 1

使用Intent.ActionView而不是字符串"ACTION_VIEW"。

例如：

a.StartActivity(new Intent(Intent.ActionView, Android.Net.Uri.Parse("market://details?id=" + appPackageName)));

Android应用程序问题 - 如何在Play商店中加载应用程序条目

1 个答案: