Android 获取手机中已安装apk文件信息.docx

众所周知，通过PackageManager可以获取手机端已安装的apk文件的信息，具体代码如下PackageManager packageManager = this.getPackageManager(); List packageInfoList = packageManager.getInstalledPackages(0); 通过以上方法，可以得到手机中安装的所有应用程序，既包括了手动安装的apk包的信息，也包括了系统预装的应用软件的信息，要区分这两类软件可使用以下方法:a.从packageInfoList获取的packageInfo，再通过packageInfo.applicationInfo获取applicationInfo。b.判断(applicationInfo.flags& ApplicationInfo.FLAG_SYSTEM)的值，该值大于0时，表示获取的应用为系统预装的应用，反之则为手动安装的应用。大家可以看下代码，说明已经写在注释中。获取应用的代码:/* * 查询手机内非系统应用 * param context * return */ public static List getAllApps(Context context) List apps = new ArrayList(); PackageManager pManager = context.getPackageManager(); /获取手机内所有应用 List paklist = pManager.getInstalledPackages(0); for (int i = 0; i paklist.size(); i+) PackageInfo pak = (PackageInfo) paklist.get(i); /判断是否为非系统预装的应用程序 if (pak.applicationInfo.flags & pak.applicationInfo.FLAG_SYSTEM) = 0) / customs applications apps.add(pak); return apps; 获取图片、应用名、包名:PackageManager pManager = MessageSendActivity.this.getPackageManager(); List appList = Utils.getAllApps(MessageSendActivity.this); for(int i=0;iappList.size();i+) PackageInfo pinfo = appList.get(i); ShareItemInfo shareItem = new ShareItemInfo(); /set Icon shareItem.setIcon(pManager.getApplicationIcon(pinfo.applicationInfo); /set Application Name shareItem.setLabel(pManager.getApplicationLabel(pinfo.applicationInfo).toString(); /set Package Name shareItem.setPackageName(pinfo.applicationInfo.packageName); 其中ShareItemInfo 类是我本地自定义的，各位可以忽略！另为，有人可能在找 分享应用列表，在此一并说下吧。获取支持分享的应用的代码：/* * 查询手机内所有支持分享的应用 * param context * return */ public static List getShareApps(Context context) List mApps = new ArrayList(); Intent intent=new Intent(Intent.ACTION_SEND,null); intent.addCategory(Intent.CATEGORY_DEFAULT); intent.setType(text/plain); PackageManager pManager = context.getPackageManager(); mApps = pManager.queryIntentActivities(intent,PackageManager.COMPONENT_ENABLED_STATE_DEFAULT); return mApps; 由于该方法，返回的并不是PackageInfo 对象。而是ResolveInfo。因此获取图片、应用名、包名的方法不一样，如下：PackageManager pManager = MessageSendActivity.this.getPackageManager(); /*查询手机内所有支持分享的应用*/ List resolveList = Utils.getShareApps(MessageSendActivity.this); for(int i=0;iresolveList.size();i+) ResolveInfo resolve = resolveList.get(i); ShareItemInfo shareItem = new ShareItemInfo(); /set Icon shareItem.setIcon(resolve.loadIcon(pManager); /set Application Name shareItem.setLabel(resolve.loadLabel(pManager).toString(); /set Package Name shareItem.setPackageName(resolve.activityInfo.packageName); 总结：通过 PackageInfo 获取具体信息方法：包名获取方法：packageInfo.packageNameicon获取获取方法：packageManager.getApplicationIcon(applicationInfo)应用名称获取方法：packageManager.getApplicationLabel(applicationInfo)使用权限获取方法：packageManager.getPackageInfo(packageName,PackageManager.GET_PERMISSIONS).requestedPermissions通过 ResolveInfo