主要练习了自定义样式和主题，继承android系统默认的样式并修改，练习xml定义淡入淡出动画

anim/fade_in.xml

anim/fade_out.xml

values/styles.xml

MainActivity.java

package com.example.tsh;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;public class MainActivity extends Activity {    private Handler handler=new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        handler.postDelayed(new Runnable() {            @Override            public void run() {                Intent intent=new Intent(MainActivity.this, TwoActivity.class);                startActivity(intent);            }        }, 3000);    }}

Manifest.xml