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)
public
class
AppInfo {
public
String appName
=
""
;
public
String packageName
=
""
;
public
String versionName
=
""
;
public
int
versionCode
=
0
;
public
Drawable appIcon
=
null
;
public
void
print()
{
Log.v(
"
app
"
,
"
Name:
"
+
appName
+
"
Package:
"
+
packageName);
Log.v(
"
app
"
,
"
Name:
"
+
appName
+
"
versionName:
"
+
versionName);
Log.v(
"
app
"
,
"
Name:
"
+
appName
+
"
versionCode:
"
+
versionCode);
}
}
然后我们通过PackageManager 来获取已安装的应用包信息。
ArrayList<AppInfo> appList = new ArrayList<AppInfo>(); //用来存储获取的应用信息数据
List
<
PackageInfo
>
packages
=
getPackageManager().getInstalledPackages(
0
);
for
(
int
i
=
0
;i
<
packages.size();i
++
) {
PackageInfo packageInfo
=
packages.get(i);
AppInfo tmpInfo
=
new
AppInfo();
tmpInfo.appName
=
packageInfo.applicationInfo.loadLabel(getPackageManager()).toString();
tmpInfo.packageName
=
packageInfo.packageName;
tmpInfo.versionName
=
packageInfo.versionName;
tmpInfo.versionCode
=
packageInfo.versionCode;
tmpInfo.appIcon
=
packageInfo.applicationInfo.loadIcon(getPackageManager());
appList.add(tmpInfo);
}
//好啦 这下手机上安装的应用数据都存在appList里了。
那么如何判断一个应用是否为系统应用呢?
if
((packageInfo.applicationInfo.flags
&
ApplicationInfo.FLAG_SYSTEM)
==
0
)
{
//
非系统应用
}
else
{
//系统应用
}
所以如果只需要获取到非系统应用信息,代码如下:
ArrayList<AppInfo> appList = new ArrayList<AppInfo>(); //用来存储获取的应用信息数据
List
<
PackageInfo
>
packages
=
getPackageManager().getInstalledPackages(
0
);
for
(
int
i
=
0
;i
<
packages.size();i
++
) {
PackageInfo packageInfo
=
packages.get(i);
AppInfo tmpInfo
=
new
AppInfo();
tmpInfo.appName
=
packageInfo.applicationInfo.loadLabel(getPackageManager()).toString();
tmpInfo.packageName
=
packageInfo.packageName;
tmpInfo.versionName
=
packageInfo.versionName;
tmpInfo.versionCode
=
packageInfo.versionCode;
tmpInfo.appIcon
=
packageInfo.applicationInfo.loadIcon(getPackageManager());
//
Only display the non-system app info
if
((packageInfo.applicationInfo.flags
&
ApplicationInfo.FLAG_SYSTEM)
==
0
)
{
appList.add(tmpInfo);//如果非系统应用,则添加至appList
}
}
原文地址:http://www.cnblogs.com/mainroadlee/archive/2011/05/23/android_get_installed_app.html