问题描述
我如何编写代码来告诉我你的安卓手机上安装了安卓市场?
How could I write a code which can tell me that android market is installed on your android phone?
推荐答案
有两种方法.您可以使用已经提到的 getPackageManager() 和 getApplicationInfo() (如果找不到包，则会抛出 PacketManager.NameNotFoundException -请参阅此处).Android Market 的包名是 com.android.vending.
There are two ways. You can use the already mentioned getPackageManager() and getApplicationInfo() (if the package is not found, a PacketManager.NameNotFoundException will be thrown - see here). Android Market's package name is com.android.vending.
但是，您也可以创建一个虚拟意图来搜索市场并检查其处理方式.如果结果列表至少有一个条目，则可以确定 Android Market 已安装:
However, you can also create a dummy intent for searching the market and check how it is handled. If the resulting list has at least one entry, you can be sure that Android Market is installed:
Intent market = new Intent(Intent.ACTION_VIEW, Uri.parse("market://search?q=dummy"));
PackageManager manager = getPackageManager();
List<ResolveInfo> list = manager.queryIntentActivities(mmarket, 0);
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