安卓做旋转动画

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main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical"  android:background="#FFFFFF">    <TextView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/hello" />    <ImageView        android:id="@+id/welcomeLoading"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_marginTop="18.0dip"        android:background="@drawable/spinner_small" /></LinearLayout>

spinner_small.xml

<?xml version="1.0" encoding="utf-8"?><animation-list        xmlns:android="http://schemas.android.com/apk/res/android"        android:oneshot="false">    <item android:drawable="@drawable/ic_loading_40x40_01" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_02" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_03" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_04" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_05" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_06" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_07" android:duration="150" />    <item android:drawable="@drawable/ic_loading_40x40_08" android:duration="150" /></animation-list>

activity 文件

package sdfr.pacsdf.namespace;import android.app.Activity;import android.graphics.drawable.AnimationDrawable;import android.os.Bundle;import android.widget.ImageView;public class SdfActivity extends Activity {private ImageView wLoading;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        wLoading = (ImageView) findViewById(R.id.welcomeLoading);           }    @Override    public void onWindowFocusChanged(boolean hasFocus) {     AnimationDrawable ad=(AnimationDrawable) wLoading.getBackground();         ad.start();    super.onWindowFocusChanged(hasFocus);    }    }