java - 启动画面不会显示，只有空白区域

Question

因此创建了启动屏幕 png，将其放入可绘制文件夹中(仅创建了一种尺寸以查看其在设备上的外观)，但是当应用程序启动时它只是不显示它，只显示白色屏幕。

这是splash.java

public class Splash extends AppCompatActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash_screen);

        int secondsDelayed = 1;
        new Handler().postDelayed(new Runnable() {
            public void run() {
                Intent intent = new Intent(Splash.this, AppLayoutMain.class);
                startActivity(intent);

            }
        }, secondsDelayed * 1000);
    }
}

这是 XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/imageView46"
        android:background="@drawable/splashscreen"/>
</LinearLayout>

和 list

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".Splash"
        android:theme="@style/AppTheme.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".AppLayoutMain"/>

我做错了什么？

Answer 1

将处理程序移至 onResume

@Override
protected void onResume() {
   super.onResume();
   new Handler().postDelayed(new Runnable() {
        public void run() {
            Intent intent = new Intent(Splash.this, AppLayoutMain.class);
            startActivity(intent);

        }
    }, secondsDelayed * 1000);
}

xml 也发生变化

android:background="@drawable/splashscreen"

至

android:src="@drawable/splashscreen"