Android入门基础

矫情吗；* 2022-02-21 15:48 282阅读 0赞

# 1 Android的整体架构图 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 1]  
**注意：  
Android应用运行的是DVM虚拟机，并且一个应用一个虚拟机。**

# 2 搭建开发环境（基于eclipse） #

### 2.1 资源说明 ###

资源下载地址  
[下面所有资源][Link 1]  
![在这里插入图片描述][20190411093825611.png]

### 2.2 环境变量配置 ###

配置sdk目录下的：  
![在这里插入图片描述][20190411093920666.png]

### 2.3 eclipse里引用 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 2]

### 2.4 创建并启动模拟器 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 3]

### 2.5 解决模拟器创建或启动的问题 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 4]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 5]

### 2.6 创建并运行HelloAndroid ###

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要注意的就是上面SDK版本的选择一定要比手机或者模拟器版本低。

# 3 开发第一个应用HelloAndroid #

### 3.1 项目结构说明 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 7]

### 3.2 APK安装文件的组成结构 ###

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### 3.3 应用编译打包过程 ###

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### 3.4 Android系统文件目录结构 ###

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### 3.5 SDK的文件目录结构 ###

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# 4 常用工具和命令的讲解 #

### 4.1 ADB ###

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### 4.2 DDMS ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 13]

#### 4.2.1 logCat视窗 ####

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#### 4.2.2 File Explorer视窗 ####

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#### 4.2.3 Devices视窗 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 16]

#### 4.2.4 Emulator Control视窗 ####

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### 4.3 Log ###

#### 4.3.1 日志工具类: Log ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 18]

#### 4.3.2 比较Log与System.out ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 19]

# 5 相关API和其他概念讲解 #

### 5.1 相关API ###

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### 5.2 手机尺寸的概念 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1MjM3NDYzMzU4Mw_size_16_color_FFFFFF_t_70 21]  
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[Link 1]: https://download.csdn.net/download/wu2374633583/11105984
[20190411093825611.png]: /images/20220221/4924d316ff9e44b087685341051bf369.png
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