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[转载]Android获取已安装应用信息(图标，名称，版本号，包) – MainRoad – 博客园.
Android 菜市场上有一款应用较 ShareApp，可以显示，管理，分享Android手机上安装的应用。
但比较不爽的是，它把很多系统自带的应用程序也都显示了出来。这些程序往往是无法卸载的，更无法分享，让“已安装应用程序”的列表显的非常凌乱。
我在手机上运行了一下，结果Gtalk,DRMService这些系统应用都显示出来了..比较不爽。
于是自己写了个程序，看看能不能只显示用户自己安装的程序。
程序大概分成三个部分：
1.获取手机已安装的所有应用package的信息(其中包括用户自己安装的，还有系统自带的)；
2.滤除系统自带应用；
3.通过列表显示出应用程序的图标(icon),和其他文字信息(应用名称，包名称package name,版本号等等)
首先，我们定义一个数据结构，来保存应用程序信息(icon,name,packageName,versionName,versionCode,等)
<span class="kwd">public</span><span class="pln"> </span><span class="kwd">class</span><span class="pln"> </span><span class="typ">AppInfo</span><span class="pln"> </span><span class="pun">{</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="typ">String</span><span class="pln"> appName</span><span class="pun">=</span><span class="str">""</span><span class="pun">;</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="typ">String</span><span class="pln"> packageName</span><span class="pun">=</span><span class="str">""</span><span class="pun">;</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="typ">String</span><span class="pln"> versionName</span><span class="pun">=</span><span class="str">""</span><span class="pun">;</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">int</span><span class="pln"> versionCode</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="typ">Drawable</span><span class="pln"> appIcon</span><span class="pun">=</span><span class="kwd">null</span><span class="pun">;</span><span class="pln"></span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">void</span><span class="pln"> </span><span class="kwd">print</span><span class="pun">()</span><span class="pln"></span><span class="pun">{</span><span class="pln"></span><span class="typ">Log</span><span class="pun">.</span><span class="pln">v</span><span class="pun">(</span><span class="str">"app"</span><span class="pun">,</span><span class="str">"Name:"</span><span class="pun">+</span><span class="pln">appName</span><span class="pun">+</span><span class="str">" Package:"</span><span class="pun">+</span><span class="pln">packageName</span><span class="pun">);</span><span class="pln"></span><span class="typ">Log</span><span class="pun">.</span><span class="pln">v</span><span class="pun">(</span><span class="str">"app"</span><span class="pun">,</span><span class="str">"Name:"</span><span class="pun">+</span><span class="pln">appName</span><span class="pun">+</span><span class="str">" versionName:"</span><span class="pun">+</span><span class="pln">versionName</span><span class="pun">);</span><span class="pln"></span><span class="typ">Log</span><span class="pun">.</span><span class="pln">v</span><span class="pun">(</span><span class="str">"app"</span><span class="pun">,</span><span class="str">"Name:"</span><span class="pun">+</span><span class="pln">appName</span><span class="pun">+</span><span class="str">" versionCode:"</span><span class="pun">+</span><span class="pln">versionCode</span><span class="pun">);</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span> |
然后我们通过PackageManager 来获取已安装的应用包信息。
<span class="typ">ArrayList</span><span class="pln"> appList </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">ArrayList</span><span class="pun">();</span><span class="pln"> </span><span class="com">//用来存储获取的应用信息数据</span><span class="pln"></span><span class="typ">List</span><span class="pln">packages </span><span class="pun">=</span><span class="pln"> getPackageManager</span><span class="pun">().</span><span class="pln">getInstalledPackages</span><span class="pun">(</span><span class="lit">0</span><span class="pun">);</span><span class="pln"></span><span class="kwd">for</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> i</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln">i</span><span class="typ">PackageInfo</span><span class="pln"> packageInfo </span><span class="pun">=</span><span class="pln"> packages</span><span class="pun">.</span><span class="kwd">get</span><span class="pun">(</span><span class="pln">i</span><span class="pun">);</span><span class="pln"></span><span class="typ">AppInfo</span><span class="pln"> tmpInfo </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">AppInfo</span><span class="pun">();</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">appName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">loadLabel</span><span class="pun">(</span><span class="pln">getPackageManager</span><span class="pun">()).</span><span class="pln">toString</span><span class="pun">();</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">packageName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">packageName</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">versionName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">versionName</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">versionCode </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">versionCode</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">appIcon </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">loadIcon</span><span class="pun">(</span><span class="pln">getPackageManager</span><span class="pun">());</span><span class="pln">appList</span><span class="pun">.</span><span class="pln">add</span><span class="pun">(</span><span class="pln">tmpInfo</span><span class="pun">);</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span><span class="com">//好啦 这下手机上安装的应用数据都存在appList里了。</span> |
那么如何判断一个应用是否为系统应用呢?
<span class="kwd">if</span><span class="pun">((</span><span class="pln">packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">flags</span><span class="pun">&</span><span class="pln">amp</span><span class="pun">;</span><span class="typ">ApplicationInfo</span><span class="pun">.</span><span class="pln">FLAG_SYSTEM</span><span class="pun">)==</span><span class="lit">0</span><span class="pun">)</span><span class="pln"></span><span class="pun">{</span><span class="pln"></span><span class="com">//非系统应用</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span><span class="kwd">else</span><span class="pln"></span><span class="pun">{</span><span class="pln"></span><span class="com">//系统应用</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span> |
所以如果只需要获取到非系统应用信息，代码如下:
<span class="typ">ArrayList</span><span class="pln"> appList </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">ArrayList</span><span class="pun">();</span><span class="pln"> </span><span class="com">//用来存储获取的应用信息数据</span><span class="pln"></span><span class="typ">List</span><span class="pln">packages </span><span class="pun">=</span><span class="pln"> getPackageManager</span><span class="pun">().</span><span class="pln">getInstalledPackages</span><span class="pun">(</span><span class="lit">0</span><span class="pun">);</span><span class="pln"></span><span class="kwd">for</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> i</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln">i </span><span class="typ">PackageInfo</span><span class="pln"> packageInfo </span><span class="pun">=</span><span class="pln"> packages</span><span class="pun">.</span><span class="kwd">get</span><span class="pun">(</span><span class="pln">i</span><span class="pun">);</span><span class="pln"></span><span class="typ">AppInfo</span><span class="pln"> tmpInfo </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">AppInfo</span><span class="pun">();</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">appName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">loadLabel</span><span class="pun">(</span><span class="pln">getPackageManager</span><span class="pun">()).</span><span class="pln">toString</span><span class="pun">();</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">packageName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">packageName</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">versionName </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">versionName</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">versionCode </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">versionCode</span><span class="pun">;</span><span class="pln">tmpInfo</span><span class="pun">.</span><span class="pln">appIcon </span><span class="pun">=</span><span class="pln"> packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">loadIcon</span><span class="pun">(</span><span class="pln">getPackageManager</span><span class="pun">());</span><span class="pln"></span><span class="com">//Only display the non-system app info</span><span class="pln"></span><span class="kwd">if</span><span class="pun">((</span><span class="pln">packageInfo</span><span class="pun">.</span><span class="pln">applicationInfo</span><span class="pun">.</span><span class="pln">flags</span><span class="pun">&</span><span class="pln">amp</span><span class="pun">;</span><span class="typ">ApplicationInfo</span><span class="pun">.</span><span class="pln">FLAG_SYSTEM</span><span class="pun">)==</span><span class="lit">0</span><span class="pun">)</span><span class="pln"></span><span class="pun">{</span><span class="pln">appList</span><span class="pun">.</span><span class="pln">add</span><span class="pun">(</span><span class="pln">tmpInfo</span><span class="pun">);</span><span class="com">//如果非系统应用，则添加至appList</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span><span class="pun">}</span><span class="pln"></span> |
最后，我们可以自定义一个app_row.xml的layout 文件，用来显示appList中的数据
是不是看着利索多了～～～(我在每行里只显示了icon 和 appName，你也可以修改app_row.xml 和 AppAdapter 部分后显示更多的信息)
大家可以参考我的源码:
源码下载地址:
http://www.everbox.com/f/cV98GFipIUHV34WOmXNdemQ6Vm
我的联系方式:
twitter: @mainroadlee
talkbox id:mainroadlee
参考:
1. [Android分享] Android 得到已安装的应用程序信息
http://www.eoeandroid.com/thread-67948-1-1.html
该文中描述了如何获取Android 已安装应用信息，但关于系统应用的判断部分存在错误。
2. Android中级篇之区分系统程序和安装程序
http://blog.csdn.net/y13872888163/archive/2011/05/20/6435618.aspx
