Android 启动界面Splash

Android启动页面，例如QQ音乐启动时的logo、微信的月亮、爱奇艺的图标等等

Activity代码：

public class splashActivity extends Activity {
    private static final int SPLASH_LENGTH =2000 ;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.splashlayout);
        new Handler().postDelayed(new Runnable() {
            public void run() {
                Intent intent = new Intent(splashActivity.this, MainActivity.class);
                startActivity(intent);
                //关闭splashActivity，避免按返回键返回此界面
                splashActivity.this.finish();
            }
        }, SPLASH_LENGTH);

    }
}

布局文件：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@mipmap/splash"
        android:scaleType="fitXY"
        />

</FrameLayout>

最后注册Activity更改启动Activity

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

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