android动画，透明度渐变，图片移动

效果是：图片由透明变为不透明，文字由下往上移动

MainActivity.java

package com.example.imagealpha_2;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {
	private ImageView imageView1,imageView2;
	private Animation animation,trans_animation;
	private TextView textView2,textView3;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		textView2 = (TextView) findViewById(R.id.textView2);
		textView3 = (TextView) findViewById(R.id.textView3);
		imageView1 = (ImageView) findViewById(R.id.imageView1);
//		imageView2 = (ImageView) findViewById(R.id.imageView2);
		
		animation = AnimationUtils.loadAnimation(MainActivity.this,
				R.anim.alpha);
		
		trans_animation = AnimationUtils.loadAnimation(MainActivity.this,
				R.anim.transplate);
		

		imageView1.startAnimation(animation);
	///	textView2.startAnimation(animation);
		textView2.startAnimation(trans_animation);
		textView3.startAnimation(trans_animation);
		

	}
}

layout.xml

<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"
    android:background="@android:color/holo_green_light"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="99dp"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="124dp"
        android:text="悟空天气" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        android:text="生活如虎添翼" />

</RelativeLayout>

alpha.xml

<?xml version="1.0" encoding="UTF-8"?>

<alpha 
    android:fromAlpha="0"
    android:toAlpha="1"  
    android:duration="1500"
    android:repeatCount="0"
    
    xmlns:android="http://schemas.android.com/apk/res/android"/>

transpalte.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
    <translate 
        android:fromYDelta="100%p" 
        android:toYDelta="0%p"
        android:repeatMode="restart"
        android:interpolator="@android:anim/linear_interpolator"
        android:repeatCount="0"
        android:duration="1500" />
</set>