📅  最后修改于: 2023-12-03 15:13:20.715000             🧑  作者: Mango
In Android development, startActivityForResult()
is a method used to start a new activity and get a result back from it. However, in recent versions of Android Studio, this method has been deprecated.
Starting from Android API level 28, the startActivityForResult()
method is marked as deprecated. This means that while it is still functional, it is no longer recommended to use in new projects. Instead, developers are encouraged to use the registerForActivityResult()
method along with the ActivityResultContract
classes.
The registerForActivityResult()
method provides a more modern and streamlined way to handle activity results. It eliminates the need for manually managing request codes and result codes.
Here's an example of how to use registerForActivityResult()
in Android Studio:
// Create an ActivityResultLauncher object
ActivityResultLauncher<Intent> launcher = registerForActivityResult(
new StartActivityForResult(),
result -> {
if (result.getResultCode() == Activity.RESULT_OK) {
// Handle the successful result here
} else {
// Handle the result when it's not OK
}
}
);
// Launch the activity using the launcher
launcher.launch(intent);
Using registerForActivityResult()
offers several advantages over the deprecated startActivityForResult()
:
In summary, the startActivityForResult()
method has been deprecated in Android Studio. Developers are encouraged to use the registerForActivityResult()
method instead, which provides a more efficient and recommended approach for handling activity results. By adopting this new method, programmers can benefit from improved code readability and compatibility with modern Android development practices.