It is implicitly started to determine whether a matching Intent exists and to determine whether a matching intent exists.

It is implicitly started to determine whether a matching Intent exists and to determine whether a matching intent exists.

1. resolveActivity of PackageManager

Public abstract ResolveInfo resolveActivity (Intent intent, int flags );

GetPackageManager (). resolveActivity ();

 

Returns the Intent that can be matched. If it cannot be matched, NULL is returned,

Ii. queryIntentActivities of PackageManager

Public abstract List <ResolveInfo> queryIntentActivities (Intent intent, int flags );

GetPackageManager (). queryIntentActivities (intent, PackageManager. MATCH_DEFAULT_ONLY );

 

Returns information about all successfully matched activities.

Iii. Intent resolveActivity

Public ComponentName resolveActivity (PackageManager pm)

Intent intent = new Intent (); ComponentName componentName = intent. resolveActivity ();

 

The first parameter represents Intent.

Second parameter: Set PackageManager. MATCH_DEFAULT_ONLY