android 启动页

在android项目中一定存在的模块，一定是AppStart模块了。

分享代码如下：

package com.weidingqiang.custommooc;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;

/**
 * 启动页面
 */
public class MainActivity extends AppCompatActivity {

    private static final String TAG = MainActivity.class.getSimpleName();

    private static final String First = "first";

    private ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //设置全屏
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_main);

        imageView = (ImageView) this.findViewById(R.id.iconImageView);

        initAnimation();
    }

    /**
     * 初始化动画
     */
    private void initAnimation(){
        Animation animation = AnimationUtils.loadAnimation(this,R.anim.start_anim);
        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                jump();
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });
        imageView.startAnimation(animation);
    }

    /**
     * 动画完成
     */
    private void jump(){
        //查看是否第一次打开
        //如果首次打开 则跳转到介绍页面
        //否则直接进入主界面
        SharedPreferences sharedPreferences= getSharedPreferences(TAG,
                Activity.MODE_PRIVATE);
        boolean isfrist = sharedPreferences.getBoolean(First, true);

        Intent jumpintent = new Intent();

        if(isfrist){
            //第一次 运行介绍界面
            SharedPreferences.Editor editor = sharedPreferences.edit();
            editor.putBoolean(First,false);
            editor.commit();

        }
        else
        {

        }
        startActivity(jumpintent);
        finish();
    }
}

布局文件为

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/loading_main_bg"
    >

    <ImageView
        android:id="@+id/iconImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/loading_main_bottom"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="30dp"
        android:layout_centerHorizontal="true"
        />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/copyright"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="8dp"
        android:gravity="center"
        android:layout_centerHorizontal="true"
        android:textSize="10sp"
        />

</RelativeLayout>

动画文件为

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="2000">
    <alpha android:fromAlpha="0.9" android:toAlpha="1.0"/>
</set>