界面之间转换以及开始界面慢慢亮，达到最亮后跳转到下个界面。

在学习的时候记录每个小的结果，日积月累吧。有些参考：http://blog.csdn.net/liu537192/article/details/39717201

下面是自己敲代码。

1.开始界面
package com.example.appstart;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;

public class StartActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    final View view=View.inflate(this, R.layout.start_main, null);
    setContentView(view);

    AlphaAnimation aa=new AlphaAnimation(0.1f, 1.0f);
    aa.setDuration(2000);   //变亮的速度，越大越慢
    view.startAnimation(aa);
    aa.setAnimationListener(new AnimationListener() {

        @Override
        public void onAnimationStart(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationRepeat(Animation arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationEnd(Animation arg0) {
            // TODO Auto-generated method stub
            ViewChange(); //调用界面变换的方法
        }

        /**
         * 界面变换的方法
         */
        private void ViewChange() {
            // TODO Auto-generated method stub

            Intent intent=new Intent();
            intent.setClass(StartActivity.this, MainActivity.class);
            startActivity(intent);
            StartActivity.this.finish();    //结束前面的开始界面 

        }
    });
}

2.要转换的到的界面
package com.example.appstart;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

3.最后AndroidManife.xml的配置
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.appstart"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="18" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.appstart.MainActivity"
        android:label="@string/app_name" >

        注意这里要注释掉，不然出错
       <!--  <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

    <activity
        android:name="com.example.appstart.StartActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

</manifest>