Android progressBar&Widget

Android Drawable Resource学习（十一）、RotateDrawable 

http://blog.csdn.net/lonelyroamer/article/details/8252533

Android Drawable Resource学习（十二）、ShapeDrawable还是GradientDrawable？

http://blog.csdn.net/lonelyroamer/article/details/8254592

Android GradientDrawable类的详解，设置activity的背景颜色渐变效果

http://blog.csdn.net/lonelyroamer/article/details/8254592

Android自定义进度条

http://www.2cto.com/kf/201205/130990.html

http://stackoverflow.com/questions/15585749/progressdialog-spinning-circle

改变内外圈比例

http://stackoverflow.com/questions/15681760/android-progress-bar-fill

官网资料

http://developer.android.com/reference/android/graphics/drawable/GradientDrawable.html

Android教程：LayerDrawable层叠样式layer-list

http://www.linuxidc.com/Linux/2012-05/59827.htm

AppWidget数据持久化

http://androiddada.iteye.com/blog/1189775

Enabling a Widget for the Lock Screen

http://www.vogella.com/articles/AndroidWidgets/

http://www.sanid.com/wp-content/uploads/2009/07/android_howto-hellowidget.pdf

widget 动画

http://www.eoeandroid.com/code/2011/1216/407.html

设置同一个 Widget 不重复添加

http://www.eoeandroid.com/thread-56956-1-1.html

Widget汇总

http://www.eoeandroid.com/thread-172476-1-1.html

Widget必须保持一定的大小，主屏幕分为特定大小的单元格

http://www.blogjava.net/Green-nut/archive/2010/11/16/333036.html?opt=admin

1. < ?xml version="1.0" encoding="utf-8"?>
2. <appwidget -provider xmlns:android="http://schemas.android.com/apk/res/android"
3.    android:minWidth="40dp"
4.    android:minHeight="40dp"
5.    android:updatePeriodMillis="48000000"
6.    android:previewImage="@drawable/pre_widget"
7.    android:initialLayout="@layout/desktop_widget"
8.    android:resizeMode="horizontal|vertical"
9.    android:widgetCategory="home_screen|keyguard">//屏幕点亮锁屏时也显示
10. </appwidget>