完善代码

README.md

@@ -36,3 +36,12 @@ hexo s
 ```script
 hexo d
 ```
+
+
+
+##### 建站记录
+
+
+数学公式的支持：
+需要手动安装pandoc程序
+https://github.com/theme-next/hexo-theme-next/blob/master/docs/zh-CN/MATH.md

source/_drafts/android-aosp-binder.md

@@ -0,0 +1,63 @@
+---
+title: Android Binder
+tags: Android
+-------------
+
+一、Binder是什么
+
+<center>
+    <img src="../images/android-binder-what.svg" width="50%"/>
+</center>
+
++ An IPC/component system for developing object-oriented OS services
+ - Not yet another object-oriented kernel
+ - Instead an object-oriented operating system environment that works on traditional kernels, like Linux!
+
++ Essential to Android!
++ Comes from OpenBinder
+ - Started at Be, Inc. as a key part of the "next generation BeOS" (~ 2001)
+ - Acquired by PalmSource
+ - First implementation used in Palm Cobalt (micro-kernel based OS)
+ - Palm switched to Linux, so Binder ported to Linux, open-sourced (~ 2005)
+ - Google hired Dianne Hackborn, a key OpenBinder engineer, to join the Android team
+ - Used as-is for the initial bring-up of Android, but then completely rewritten (~ 2008)
+ - OpenBinder no longer maintained - long live Binder!
+
++ Focused on scalability, stability, flexibility, low-latency/overhead, easy programming model
+
+二、IPC
+
++ Inter-process communication (IPC) is a framework for the exchange of signals and data across multiple processes
++ Used for message passing, synchronization, shared memory, and remote procedure calls (RPC)
++ Enables information sharing, computational speedup, modularity, convenience, privilege separation, data isolation, stability
+ - Each process has its own (sandboxed) address space, typically running under a unique system ID
++ Many IPC options
+ - Files (including memory mapped)
+ - Signals
+ - Sockets (UNIX domain, TCP/IP)
+ - Pipes (including named pipes)
+ - Semaphores
+ - Shared memory
+ - Message passing (including queues, message bus)
+ - Intents, ContentProviders, Messenger
+ - Binder!
+
+
+三、为什么使用Binder
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+<center>
+    <img src="../images/android-basic-aidl-overview.png" width="50%"/>
+</center>

source/_drafts/android-basic-app-widgets.md

@@ -25,14 +25,10 @@ tags:
 1.4 设计指引
 + 小部件内容
     小部件是吸引用户进入app的绝佳机制。
-
-
 + 小部件导航
     将用户导航到常用功能，快速完成用户的意图。
-
 + 小部件的尺寸
     长按并放手进入大小调节模式。通过尺寸变化，控制信息的展示量。
-
 + 布局注意事项
     根据设备网格的分辨率来摆放布局。记住以下几点：
 
@@ -56,24 +52,23 @@ tags:
 
 ####  二、创建简单的小部件
 
-2.1 小部件元器件
+##### 2.1 涉及的类
 + `AppWidgetProviderInfo`
     描述小部件元信息，布局、更新频率等
 + `AppWidgetProvider`
     定义交互的编程接口。
 
 
 <center>
-    <img src="../images/android-appwidget-overview.jpeg" width="100%"/>
+    <img src="../images/android-appwidget-overview.jpeg" width="50%"/>
 </center>
 
 除了基本的元器件，如果你的小部件需要用户配置信息，你需要提供配置修改界面让用户修改配置，如钟表小部件的时区修改。
 + Android-12起，提供默认配置，之后用户再修改。
 + Android-11及以前，每次添加小部件都启动配置页。
 
 
-2.2 声明`AppWidgetProviderInfo`
-
+#####  2.2 声明`AppWidgetProviderInfo`
 在res/xml/声明：
 ```xml
 <appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
@@ -95,10 +90,129 @@ tags:
 
 ```
 
-尺寸属性:
+2.2.1 尺寸属性:
++ `targetCellWidth` & `targetCellHeight`(Android-12)
++ `minWidth` & `minHeight`
++ `minResizeWidth` & `minResizeHeight`
++ `resizeMode`
+
+2.2.2 其他属性：
++ updatePeriodMillis
++ initialLayout
++ configure
++ description
++ previewLayout(Android-12) & previewImage(Android11-↓)
++ autoAdvanceViewId
++ widgetCategory
++ widgetFeatures
+
+
+##### 2.3 使用`AppWidgetProvider`类处理广播
+
+2.3.1 在`AndroidManifest`声明
+
+```xml
+<receiver android:name="ExampleAppWidgetProvider"
+                 android:exported="false">
+    <intent-filter>
+        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+    </intent-filter>
+    <meta-data android:name="android.appwidget.provider"
+               android:resource="@xml/example_appwidget_info" />
+</receiver>
+```
+
+2.3.2 实现`AppWidgetProvider`类
++ onUpdate()
++ onAppWidgetOptionsChanged()
++ onDeleted(Context, int[])
++ onEnabled(Context)
++ onDisabled(Context)
++ onReceive(Context, Intent)
+
+其中`onUpdate()`回调尤为重要。
+
+
+2.3.3 接收小部件广播意图
++ ACTION_APPWIDGET_UPDATE
++ ACTION_APPWIDGET_DELETED
++ ACTION_APPWIDGET_ENABLED
++ ACTION_APPWIDGET_DISABLED
++ ACTION_APPWIDGET_OPTIONS_CHANGED
+
+
+
+##### 2.4 创建布局
+布局基于RemoteViews实现，不能使用自定义view。也不能使用RemoteViews支持的类的子类。但它支持ViewStub。
+
+2.4.1 对状态行为的支持
+Android-12支持以下包含状态的View，但是需要保存状态并注册状态变更事件。
++ CheckBox
++ Switch
++ RadioButton
+
+```kotlin
+// Check the view.
+remoteView.setCompoundButtonChecked(R.id.my_checkbox, true)
+
+// Check a radio group.
+remoteView.setRadioGroupChecked(R.id.my_radio_group, R.id.radio_button_2)
+
+// Listen for check changes. The intent will have an extra with the key
+// EXTRA_CHECKED that specifies the current checked state of the view.
+remoteView.setOnCheckedChangeResponse(
+        R.id.my_checkbox,
+        RemoteViews.RemoteResponse.fromPendingIntent(onCheckedChangePendingIntent)
+)
+```
+
+##### 2.5 实现圆角
+Android-12新增的参数：
++ system_app_widget_background_radius 不能大于28dp
++ system_app_widget_inner_radius
+
+<center>
+    <img src="../images/android-appwidget-corner.png" width="50%"/>
+</center>
+
+
+#### 三、增强你的小部件
+    这里讨论一些可选项，Android-12中的体验增强。
+
+##### 3.1 添加设备主题
+    3.1.1 使用动态颜色向后兼容
+
+##### 3.2 声音支持
 
+##### 3.3 优化选择小部件时的体验
+    Android-12增加动态预览和小部件描述。
 
 
+##### 3.4 添加小部件描述
+```xml
+<appwidget-provider
+    android:description="@string/my_widget_description">
+</appwidget-provider>
+```
+##### 3.5 平滑转场效果
+Android-12起当用户从小部件拉起应用时，使用`@android:id/background` or `android.R.id.background`优化拉起效果：
+```xml
+// Top level layout of the widget.
+<LinearLayout
+    android:id="@android:id/background">
+</LinearLayout>
+```
+
+##### 3.6 运行时修改`RemoteViews`
+Android-12新增一些方法
+```xml
+// Set the colors of a progress bar at runtime.
+remoteView.setColorStateList(R.id.progress, "setProgressTintList", createProgressColorStateList())
+
+// Specify exact sizes for margins.
+remoteView.setViewLayoutMargin(R.id.text, RemoteViews.MARGIN_END, 8f, TypedValue.COMPLEX_UNIT_DP)
+```
+
 
 
 

source/_drafts/android-source-retrofit.md

@@ -1,7 +1,7 @@
 ---
 title: Retrofit源码阅读
-tags:
----
+tags: Android
+-------------
 
 一、基本原理概述