Android项目中使用自定义进度加载Dialog

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromDegrees="0" 
    android:toDegrees="360"
    android:drawable="@drawable/progess"
    >
</rotate>

<ProgressBar 
           android:layout_centerInParent="true"
           android:id="@+id/pb"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:indeterminateDrawable="@anim/progress_rotate"
           android:indeterminateDuration="500"
           />   

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ll_pb"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/transparent"
    android:gravity="center"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/progess" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >

    <rotate
        android:duration="1500"
        android:fromDegrees="0"
        android:interpolator="@android:anim/linear_interpolator"
        android:pivotX="50%"
        android:pivotY="50%"
        android:repeatCount="-1"
        android:repeatMode="restart"
        android:startOffset="-1"
        android:toDegrees="+360" />

</set>

    <!-- 自定义loading dialog -->
    <style name="loading_dialog" parent="android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item> 
         <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
    </style>

    /**
     * 创建自定义ProgressDialog
     */
    public static Dialog showProgress(Context context){
        View view = View.inflate(context,R.layout.progress_diaolog,null);
        LinearLayout ll = (LinearLayout)view.findViewById(R.id.ll_pb);
        ImageView iv = (ImageView)view.findViewById(R.id.iv);
        
        Dialog d = new Dialog(context,R.style.loading_dialog);
        d.setContentView(ll,new LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT));
        d.setCancelable(false);
        //设置动画
        Animation a = AnimationUtils.loadAnimation(context,R.anim.progress_rotate);
        iv.startAnimation(a);
        return d;
    }

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //显示
        final Dialog dialog = Utils.showProgress(this);
        dialog.show();
        
        //模拟联网操作
        new Thread(){
            public void run() {
                SystemClock.sleep(5000);
                dialog.dismiss();
            };
        }.start();
    }

}