在 Android 上显示两个图标。如何将图标数量减少到一个

Question

我正在使用 Xamarin 进行开发。当我为 Android 创建闪屏时遇到了问题。当我在真实设备上构建它时，phone 上显示两个图标。当我卸载其中一个时，两个都被删除了。

这是什么意思？我的设置有问题吗？请让我知道如何解决它。非常感谢你。我采取的步骤如下

启动画面启动画面将在 Android 中实现。 (1)为Droid添加SplashActivity。 (2) 将MainActivity的属性由MainTheme改为SplashTheme。

    [Activity(Label = "RG2022", 
        Icon = "@mipmap/icon",
        //Theme = "@style/MainTheme", //comment out
        Theme = "@style/SplashTheme", //change to this

(3)在创建时添加MainActivity

    Window.RequestFeature(Android.Views.WindowFeatures.ActionBar);
    SetTheme(Resource.Style.MainTheme);

(4)添加RG2022\RG2022\RG2022.Android\Resources\drawable\splash_screen.xml

<?xml version="1.0" encoding="UTF-8" ?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="rectangle" >
      <solid android:color="#00000000" />
    </shape>
  </item>
    <item>
    <bitmap
        android:src="@drawable/splash"
        android:tileMode="disabled"
        android:gravity="center"/>
  </item>
</layer-list>

(5)添加RG2022\RG2022\RG2022.Android\Resources\values\styles.xml

  <style name="SplashTheme" parent ="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowBackground">@drawable/splash_screen</item>
    <item name="android:windowNoTitle">true</item>  
    <item name="android:windowFullscreen">true</item>  
    <item name="android:windowContentOverlay">@null</item>  
    <item name="android:windowActionBar">true</item>
  </style>

(6)在drowable处添加Splash.png AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.rg2022" android:installLocation="auto">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />
    <application android:icon="@mipmap/icon" android:theme="@style/MainTheme" android:label="RG2022"></application>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
</manifest>

https://github.com/misakikaoru/SG2022

Answer 1

您可以创建两个活动。一个是闪屏 activity 另一个是正常 activity.

启动画面活动：

public class SplashScreenActivity : Activity
{
    ImageView imageView;
    Animation view_animation;
    TextView textview;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        RequestWindowFeature(Android.Views.WindowFeatures.NoTitle);
        SetContentView (Resource.Layout.SplashScreen);
        imageView = (ImageView)FindViewById(Resource.Id.imageView);
        
        view_animation = AnimationUtils.LoadAnimation(this,Resource.Animation.hyperspace_jump);
         
        imageView.StartAnimation(view_animation);
        view_animation.AnimationEnd += Rotate_AnimationEnd;
        
    }

    private void Rotate_AnimationEnd(object sender, Animation.AnimationEndEventArgs e)
    {
        Finish();
        StartActivity(typeof(MainActivity));
    }
}

主要活动：

  protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        SetContentView(Resource.Layout.Main);
        Toast.MakeText(this, "Welcome to MainActivity", ToastLength.Long).Show();
    }

更详细的可以参考我之前做的贴子。

在 Android 上显示两个图标。如何将图标数量减少到一个

Display two icons on Android. How to reduce the number of icons to one

c#

android

xamarin