Android启动动画实现
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 tListener = new TListener() {
@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
三、修改启动页面（manifest）
四、启动页面主题（styles.xml）