通过packagemanager()的queryIntentAActivities(intent,0)的返回list长度来判断 具体代码如下：
PackageManager packageManager = getPackageManager();Listactivities = packageManager.queryIntentActivities(intent, 0);boolean isIntentSafe = activities.size() > 0;
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通过packagemanager()的queryIntentAActivities(intent,0)的返回list长度来判断 具体代码如下：
PackageManager packageManager = getPackageManager();Listactivities = packageManager.queryIntentActivities(intent, 0);boolean isIntentSafe = activities.size() > 0;
转载于:https://www.cnblogs.com/u3shadow/p/4381286.html