启动页学习

package ui;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.widget.LinearLayout;
import android.widget.Toast;

import com.example.play.R;

/**
 * 启动页
 * 
 * @author Administrator
 * 
 */
public class Splash extends Activity {

	private LinearLayout ll;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_splash);
		init();
		// 设置动画
		setAnimation();
	}

	private void setAnimation() {
		AnimationSet set = new AnimationSet(false);
		/**
		 * 平移动画
		 */
		// TranslateAnimation ta=new TranslateAnimation(fromXDelta, toXDelta,
		// fromYDelta, toYDelta)
		/**
		 * 旋转动画
		 */
		RotateAnimation rt = new RotateAnimation(0, 360,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		rt.setDuration(2000);
		rt.setFillAfter(true);
		/**
		 * 透明度的变化
		 */
		AlphaAnimation ap = new AlphaAnimation(0.2f, 1);
		ap.setDuration(3000);
		ap.setFillAfter(true);
		/**
		 * 缩放动画
		 */
		ScaleAnimation sc = new ScaleAnimation(0, 1, 0, 1,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		sc.setDuration(3000);
		ap.setFillAfter(true);
		set.addAnimation(ap);
		set.addAnimation(rt);
		set.addAnimation(sc);
		set.setAnimationListener(new AnimationListener() {

			@Override
			public void onAnimationStart(Animation arg0) {

			}

			@Override
			public void onAnimationRepeat(Animation arg0) {

			}

			@Override
			public void onAnimationEnd(Animation arg0) {
				startActivity(new Intent().setClass(Splash.this, Welcome.class));
			}
		});
		ll.startAnimation(set);

	}

	/**
	 * 下面的没用 只是写着完的
	 */
	@Override
	public boolean onTouchEvent(MotionEvent event) {
		// Log.e("ssssssssssssssssss", event);
		if (event.getAction() == MotionEvent.ACTION_DOWN) {
			Toast.makeText(Splash.this, "用户向下移动了", 0).show();
		}
		if (event.getAction() == MotionEvent.ACTION_CANCEL) {
			Toast.makeText(Splash.this, MotionEvent.ACTION_CANCEL + "", 0)
					.show();
		}
		if (event.getAction() == MotionEvent.ACTION_MOVE) {
			Toast.makeText(Splash.this, MotionEvent.ACTION_MOVE + "", 0).show();
		}
		return false;
	}

	private void init() {
		ll = (LinearLayout) findViewById(R.id.ll);

	}

}

xml文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ll"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/dierzhang"
    android:orientation="horizontal" >

</LinearLayout>

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