优化app启动页 解决黑屏时间长的问题

要解决这个问题其实挺简单的只需要一个样式style即可

1、在style.xml中添加下面的style  设置启动图片

<style name="SplashTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- 欢迎页背景 -->
        <item name="android:windowBackground">@mipmap/activity_welcom_bg_splash</item>
        <item name="android:windowFullscreen">true</item>

    </style>

2、在配置文件AndroidManifest.xml的启动activity中设置style

<activity
            android:name=".login.Welcome"
            android:screenOrientation="portrait"
            android:theme="@style/SplashTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

        </activity>

3、启动页activity

package com.first.mzystore.login;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.widget.ImageView;

import com.first.mzystore.R;
import com.first.mzystore.base.BaseActivity;
import com.first.mzystore.constant.SpKey;
import com.first.mzystore.home.HomeActivity;
import com.first.mzystore.utils.SpUtil;
import com.first.mzystore.utils.StatusBarUtil;

/**
 * @Company 
 * @Created by wyx on 2016/1/21.
 * @Description 欢迎页
 * @version: v2.0
 */
public class Welcome extends Activity {
    private AlphaAnimation mStart_anima;
    View mView;
    private ImageView mImgVHome;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        //下面是一个线程 1秒后跳转到对应的页面
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                redirectTo();
            }
        }, 1000);
    }



    private void redirectTo() {
        if (SpUtil.getInstance(this).getBoolean(SpKey.IS_FIRST_LOGIN, true)) {
            startActivity(new Intent(this, com.first.mzystore.login.WelcomePagesActivity.class));
        } else {
            if(SpUtil.getInstance(this).getBoolean("isLogin", false)==false){
                if(SpUtil.getInstance(this).getInt("USER_LOGIN_WAY",0)==1){
                    startActivity(new Intent(this, HomeActivity.class));
                }else {
                    SpUtil.getInstance(this).put("loginType", 1);
                    Intent intent = new Intent(this, LoginActivity.class);
                    startActivity(intent);
                }
            }else {
                startActivity(new Intent(this, HomeActivity.class));
            }
        }
        finish();
    }
}

4、这样就解决了启动页黑屏的问题，能够瞬间打开 。如果好用就给个赞吧