Android 自定义旋转进度框（单帧）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="@+id/loadingDialog_bg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/loding_dialog"/>
</LinearLayout>

public class LoadingDialog
{
public static Dialog createLoadingDialog(Context context)
{
LayoutInflater mInflater = LayoutInflater.from(context);
LinearLayout layout = (LinearLayout) mInflater.inflate(R.layout.loading_dialog, null);
ImageView image = (ImageView) layout.findViewById(R.id.loadingDialog_bg);
//创建动画
Animation animation = new RotateAnimation(0, 359, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
LinearInterpolator interpolator = new LinearInterpolator(); //匀速旋转
animation.setInterpolator(interpolator);
animation.setDuration(2000); //一次动画耗时2000ms
animation.setRepeatCount(-1); //重复播放动画
//显示动画
image.startAnimation(animation);
//创建对话框
Dialog loadingDialog = new Dialog(context,R.style.dialog);
loadingDialog.setContentView(layout);
return loadingDialog;
}
}

<style name="dialog" parent="@android:style/Theme.Dialog">
<item name="android:windowFrame">@null</item><!--边框-->
<item name="android:windowIsFloating">true</item><!--是否浮现在activity之上-->
<item name="android:windowIsTranslucent">false</item><!--半透明-->
<item name="android:windowNoTitle">true</item><!--无标题-->
<item name="android:windowBackground">@color/transparent</item><!--背景透明-->
<item name="android:backgroundDimEnabled">false</item><!--模糊-->
</style>

Dialog dialog = LoadingDialog.createLoadingDialog(LCCXActivity.this);
dialog.show();