首先提一下实现机制：
1.将manifest中launcher页设为我们需要显示的启动页面。
2.在启动动画页面中我们先加载我们需要的启动页面（动画、文字、广告等）。
3.在启动页的activity中利用线程的postDelayed方法来延迟3s，3s后便执行跳转到主界面或者
登录界面（也可以通过检查SharedPreferences中是否记住了用户历史账号信息，有记住就直接
执行登录操作，没有就跳转到登录页面）。
PS：解决启动页面白屏：传送
实现步骤：
一、新建启动页StartActivity
package cn.com.box.black.bbnotepad.Activity; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.support.annotation.RequiresApi; import android.support.v4.content.ContextCompat; import android.support.v4.view.ViewCompat; import android.support.v7.app.AppCompatActivity; import android.view.KeyEvent; import android.view.View; import android.view.ViewGroup; import android.view.Window; import android.view.WindowManager; import android.widget.CheckBox; import android.widget.FrameLayout; import android.widget.Toast; import com.airbnb.lottie.LottieAnimationView; import cn.com.box.black.bbnotepad.Bean.SuccessBean; import cn.com.box.black.bbnotepad.Listener.TListener; import cn.com.box.black.bbnotepad.Model.LoginModel; import cn.com.box.black.bbnotepad.R; import static cn.com.box.black.bbnotepad.Server.AUTO_LOGIN; import static cn.com.box.black.bbnotepad.Server.user_id_remember; import static com.githang.statusbar.StatusBarTools.getStatusBarHeight; /** * Created by gcj on 2017/11/28 */ public class StartActivity extends AppCompatActivity { private Handler handler = new Handler(); private LottieAnimationView mAnimationView; private String username,userpass; private CheckBox checkBox; private String userid; private boolean check; TListener<SuccessBean> tListener = new TListener<SuccessBean>() { @Override public void onResponse(SuccessBean loginBean) { userid = loginBean.getSuccess().toString(); //记录用户id // showToast(userid); user_id_remember= Integer.parseInt(userid); if(loginBean.getSuccess().toString().equals("0")){ Toast.makeText(StartActivity.this,"登陆失败",Toast.LENGTH_SHORT).show(); Intent intent = new Intent(StartActivity.this, LoginActivity.class); startActivity(intent); finish(); } else{ // Toast.makeText(LoginActivity.this,"登陆成功",Toast.LENGTH_SHORT).show(); Intent intent = new Intent(); intent.setClass(StartActivity.this, MainActivity1.class); startActivity(intent); finish(); } } @Override public void onFail(String msg) { Toast.makeText(StartActivity.this,"登陆失败",Toast.LENGTH_SHORT).show(); Intent intent = new Intent(StartActivity.this, LoginActivity.class); startActivity(intent); finish(); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // getSupportActionBar().hide(); if (Build.VERSION.SDK_INT <= 19) { setStatusBarColor4_4(this, ContextCompat.getColor(this, R.color.back_red) ); } else { setStatusBarColor(this,ContextCompat.getColor(this, R.color.back_red) ); } // 注意：此处将setContentView()方法注释掉 setContentView(R.layout.activity_start); check=getUser_remember(); handler.postDelayed(new Runnable() { @Override public void run() { gotoLogin(); } }, 3000); } /** * 前往注册、登录主页 */ private void gotoLogin() { username = getUser_name(); userpass = getUser_password(); if(AUTO_LOGIN==0) { LoginModel loginModul = new LoginModel(); loginModul.getUserList(username, userpass, tListener); }else{ Intent intent = new Intent(StartActivity.this, LoginActivity.class); startActivity(intent); finish(); } //取消界面跳转时的动画，使启动页的logo图片与注册、登录主页的logo图片完美衔接 overridePendingTransition(0, 0); } /** * 屏蔽物理返回键 */ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { return true; } return super.onKeyDown(keyCode, event); } @Override protected void onDestroy() { if (handler != null) { //If token is null, all callbacks and messages will be removed. handler.removeCallbacksAndMessages(null); } super.onDestroy(); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) static void setStatusBarColor(Activity activity, int statusColor) { Window window = activity.getWindow(); //取消状态栏透明 window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); //添加Flag把状态栏设为可绘制模式 window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); //设置状态栏颜色 window.setStatusBarColor(statusColor); //设置系统状态栏处于可见状态 window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE); //让view不根据系统窗口来调整自己的布局 ViewGroup mContentView = (ViewGroup) window.findViewById(Window.ID_ANDROID_CONTENT); View mChildView = mContentView.getChildAt(0); if (mChildView != null) { ViewCompat.setFitsSystemWindows(mChildView, false); ViewCompat.requestApplyInsets(mChildView); } } static void setStatusBarColor4_4(Activity activity, int statusColor) { Window window = activity.getWindow(); ViewGroup mContentView = (ViewGroup) activity.findViewById(Window.ID_ANDROID_CONTENT); //First translucent status bar. window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); int statusBarHeight = getStatusBarHeight(activity); View mChildView = mContentView.getChildAt(0); if (mChildView != null) { FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mChildView.getLayoutParams(); //如果已经为 ChildView 设置过了 marginTop, 再次调用时直接跳过 if (lp != null && lp.topMargin < statusBarHeight && lp.height != statusBarHeight) { //不预留系统空间 ViewCompat.setFitsSystemWindows(mChildView, false); lp.topMargin += statusBarHeight; mChildView.setLayoutParams(lp); } } View statusBarView = mContentView.getChildAt(0); if (statusBarView != null && statusBarView.getLayoutParams() != null && statusBarView.getLayoutParams().height == statusBarHeight) { //避免重复调用时多次添加 View statusBarView.setBackgroundColor(statusColor); return; } statusBarView = new View(activity); ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, statusBarHeight); statusBarView.setBackgroundColor(statusColor); //向 ContentView 中添加假 View mContentView.addView(statusBarView, 0, lp); } public String getUser_id(){ SharedPreferences sp; sp = getSharedPreferences("userInfo", Context.MODE_PRIVATE); return sp.getString("id",""); } //获取保存的用户名 public String getUser_name(){ SharedPreferences sp; sp = getSharedPreferences("userInfo", Context.MODE_PRIVATE); return sp.getString("username",""); } //获取保存的密码 public String getUser_password(){ SharedPreferences sp; sp = getSharedPreferences("userInfo", Context.MODE_PRIVATE); return sp.getString("userpass",""); } public boolean getUser_remember(){ SharedPreferences sp; sp = getSharedPreferences("userInfo", Context.MODE_PRIVATE); return sp.getBoolean("remember",false); } public void showToast(String content){ Toast.makeText(this,content,Toast.LENGTH_SHORT).show(); } }二、启动界面布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorLogin" android:orientation="vertical"> <ImageView android:id="@+id/imageView2" android:layout_width="120dp" android:layout_height="wrap_content" android:layout_gravity="center" android:scaleType="fitCenter" app:srcCompat="@drawable/ic_launcher" /> <TextView android:id="@+id/textView8" android:layout_width="match_parent" android:layout_height="wrap_content" android:textColor="#ffffff" android:textSize="18sp" android:gravity="center" android:padding="20dp" android:text="启动" /> </LinearLayout>
三、修改启动页面（manifest）
<activity android:name=".Activity.StartActivity" android:theme="@style/AppTheme.Launcher"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>
四、启动页面主题（styles.xml）
<style name="AppTheme.Launcher" parent="Theme.AppCompat.Light.NoActionBar"> <!-- 通过windowBackground可以设置背景色、背景图片、能解析出图片的XML文件等--> <!--<item name="android:windowBackground">@drawable/layer_launcher</item>--> <item name="windowNoTitle">true</item> <item name="android:windowFullscreen">true</item> <item name="android:windowBackground">@color/back_red</item> <item name="android:windowIsTranslucent">true</item> </style>
五、推荐一个动画效果开源库
GitHub：Lottie
参考使用：Lottie使用
文章来源: Android启动动画实现