Android项目实战教程之高仿网易云音乐启动页实例代码

<activity
 android:name=".activity.SplashActivity"
 android:screenOrientation="portrait"
 android:theme="@style/NoActionBar">
 <intent-filter>
  <action android:name="android.intent.action.MAIN" />

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

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="com.ixuea.android.courses.music.activity.SplashActivity">

 <ImageView
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:layout_alignParentLeft="true"
  android:layout_alignParentStart="true"
  android:layout_alignParentTop="true"
  android:scaleType="centerCrop"
  android:src="@drawable/splash_bg" />

 <ImageView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentTop="true"
  android:layout_centerHorizontal="true"
  android:layout_marginTop="130dp"
  android:src="@drawable/splash_banner" />

 <ImageView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_above="@+id/tv_copyright"
  android:layout_centerHorizontal="true"
  android:src="@drawable/splash_logo" />

 <TextView
  android:id="@+id/tv_copyright"
  style="@style/CopyrightText"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentBottom="true"
  android:layout_centerHorizontal="true"
  android:layout_marginBottom="20dp"
  android:layout_marginTop="10dp"
  android:text="Copyright © 2018 Ixuea. All Rights Reserved" />
</RelativeLayout>

public class SplashActivity extends BaseCommonActivity {

 //这样创建有内存泄漏，在性能优化我们具体讲解
 @SuppressLint("HandlerLeak")
 private Handler mHandler = new Handler() {
  @SuppressWarnings("unused")
  public void handleMessage(Message msg) {
   next();
  }
 };

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  //去除状态栏
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
    WindowManager.LayoutParams.FLAG_FULLSCREEN);

  setContentView(R.layout.activity_splash);
 }

 @Override
 protected void initDatas() {
  super.initDatas();
  //延时3秒，在企业中通常会有很多逻辑处理，所以延时时间最好是用3-消耗的的时间
  mHandler.postDelayed(new Runnable() {
   @Override
   public void run() {
    mHandler.sendEmptyMessage(-1);
   }
  }, 3000);
 }

 private void next() {
  if (isShowGuide()) {
   startActivityAfterFinishThis(GuideActivity.class);
  } else if (sp.isLogin()) {
   startActivityAfterFinishThis(MainActivity.class);
  } else {
   startActivityAfterFinishThis(LoginActivity.class);
  }
 }

 /**
  * 根据当前版本号判断是否需要引导页
  * @return
  */
 private boolean isShowGuide() {
  return sp.getBoolean(String.valueOf(PackageUtil.getVersionCode(getApplicationContext())),true);
 }
}