Android实现闪屏欢迎界面

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  tools:context="com.example.administrator.test.SplashActivity">  <ImageView    android:layout_width="match_parent"    android:layout_height="match_parent"    android:id="@+id/splash_iv"    android:scaleType="fitXY"    android:src="@mipmap/splash"/></RelativeLayout>

 new Handler().postDelayed(new Runnable() {      @Override      public void run() {        Intent intent=new Intent(SplashActivity.this,MainActivity.class);        startActivity(intent);        SplashActivity.this.finish();      }    },3000);

@Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_splash);    iv =(ImageView)findViewById(R.id.splash_iv);    iv.setImageResource(R.mipmap.splash);    //设置透明度动画从无到有    AlphaAnimation alphaAnimation=new AlphaAnimation(0.0f,1.0f);    //设置动画持续时间    alphaAnimation.setDuration(3000);    //开始显示动画    iv.startAnimation(alphaAnimation);    //给动画设置监听，在动画结束的时候进行跳转    alphaAnimation.setAnimationListener(new Animation.AnimationListener() {      @Override      public void onAnimationStart(Animation animation) {        //动画开始时执行        Log.e("TAG", "onAnimationStart: " );      }      @Override      public void onAnimationEnd(Animation animation) {        //动画结束时执行        Log.e("TAG", "onAnimationEnd: " );        Intent intent=new Intent(SplashActivity.this,MainActivity.class);        startActivity(intent);        finish();      }      @Override      public void onAnimationRepeat(Animation animation) {        //动画重复播放时执行        Log.e("TAG", "onAnimationRepeat: " );      }    });  }

 @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_splash);    iv =(ImageView)findViewById(R.id.splash_iv);    iv.setImageResource(R.mipmap.splash);    Timer timer=new Timer();    timer.schedule(new TimerTask() {      @Override      public void run() {        Intent intent=new Intent(SplashActivity.this,MainActivity.class);        startActivity(intent);        finish();      }    },3000);  }