帧动画

准备8张图片名字分别为：loading1、loading2、loading3、loading4、

                     Loading5、loading6、loading7、loading8。

在main.xml中：

<LinearLayout

    android:id="@+id/group"

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#000000"

    android:orientation="vertical"

    android:gravity="center_horizontal">

  <ImageView

      android:id="@+id/loading"

      android:layout_marginTop="18dp"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"/>

  <Button

      android:id="@+id/start"

      android:layout_width="100dp"

      android:layout_height="40dp"

      android:layout_marginTop="30dp"

      android:background="#3399ff"

      android:textColor="#ffffff"

      android:text="开始动画"/>

</LinearLayout>

在res/anim下新建allloading.xml:

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

<animation-list

  xmlns:android="http://schemas.android.com/apk/res/android"

  android:oneshot="true">

  <item android:drawable="@drawable/loading1" android:duration="200" />

  <item android:drawable="@drawable/loading2" android:duration="200" />

  <item android:drawable="@drawable/loading3" android:duration="200" />

  <item android:drawable="@drawable/loading4" android:duration="200" />

  <item android:drawable="@drawable/loading5" android:duration="200" />

  <item android:drawable="@drawable/loading6" android:duration="200" />

  <item android:drawable="@drawable/loading7" android:duration="200" />

  <item android:drawable="@drawable/loading8" android:duration="200" />

</animation-list>

在MyAnimationDemo.java中：

package com.li.animation;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.graphics.drawable.AnimationDrawable;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.Button;

import android.widget.ImageView;

@SuppressLint({ "ParserError", "ParserError" })

public class MyAnimationDemo extends Activity {

  private ImageView loading = null;

  private Button start = null;

  private AnimationDrawable draw = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        super.setContentView(R.layout.main);

        this.loading = (ImageView)super.findViewById(R.id.loading);

        this.start = (Button)super.findViewById(R.id.start);

        this.start.setOnClickListener(new OnClickListenerImpl());

    }

    private class OnClickListenerImpl implements OnClickListener{

     public void onClick(View v) {

       MyAnimationDemo.this.loading.setBackgroundResource(R.anim.allloading);

       MyAnimationDemo.this.draw = (AnimationDrawable)MyAnimationDemo

            .this.loading.getBackground();

       MyAnimationDemo.this.draw.setOneShot(false); //一直动

       MyAnimationDemo.this.draw.start();

     }

    }

}