Question

我遵循下面链接上的代码，

https://forums.xamarin.com/discussion/67821/splash-screen-with-text

下面是我的代码

splash.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="@color/primary"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  <LinearLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:orientation="vertical"
      android:layout_centerHorizontal="true">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#fff"
        android:text="My test"
        android:layout_marginLeft="5dp"
        android:textSize="18dp"/>
  </LinearLayout>
</RelativeLayout>

但出现错误

Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #1: invalid drawable tag RelativeLayout
    at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:1124)
    at android.graphics.drawable.Drawable.createFromXml(Drawable.java:1032)
    at android.content.res.Resources.loadDrawableForCookie(Resources.java:2469)
    ... 29 more
  Force finishing activity 1 myapp.SplashActivity

OS：棒棒糖，Xamarin Android

更新

飞溅活动

[Activity(Label = "@string/app_name", MainLauncher = true, LaunchMode = Android.Content.PM.LaunchMode.SingleTop, ScreenOrientation = Android.Content.PM.ScreenOrientation.Portrait, Theme = "@style/MySplashTheme")]
public class SplashActivity : AppCompatActivity
{
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        StartActivity(new Intent(this, typeof(ManifestActivity)));

        Finish();
    }
}

styles.xml

<?xml version="1.0" encoding="utf-8" ?>
<resources>
  <style name="MySplashTheme" parent="Theme.AppCompat.NoActionBar">
    <item name="android:windowBackground">@drawable/splash</item>
  </style>
</resources>

https://forums.xamarin.com/discussion/67821/splash-screen-with-text

https://forums.xamarin.com/discussion/31091/splash-screen-using-a-layout

Xamarin : Splash screen using a Layout

https://docs.microsoft.com/en-gb/xamarin/android/user-interface/splash-screen

https://forums.xamarin.com/discussion/119638/splash-screen-using-android-windowbackground-does-goes-behind-statusbar

Answer 1

在您的build.gradle文件中使用以下代码：

android {  
 defaultConfig {  
 vectorDrawables.useSupportLibrary = true  
}  
}

Answer 2

我执行了您的布局，并且工作正常。

您是否在colors.xml中声明了原色：

<color name="primary">#3F51B5</color>

Answer 3

如果您想使用android:windowBackground设置活动的背景，则应将其与可绘制资源一起使用，然后将其设置为活动主题。

或者，如果您想使用layout.xml，只需删除主题（因为它现在不可用）并设置

// set the user interface layout for this activity // the layout file is defined in the project res/layout/main_activity.xml file setContentView(R.layout.activity_main)

在这种情况下，您还必须延迟一段时间后进入下一个活动，而在前一种情况下，在加载活动然后触发intent时，windowbackground是可见的，现在加载了布局（即现在是背景），意图很快就会触发，因此需要一些延迟。

在启动屏幕上设置文本和图像：无效的可绘制标签RelativeLayout

3 个答案: