I have upgraded targetSdkVersion and compileSdkVersion to 33.

Now getting warning

CodePudding user response：

You can use the OnBackInvokedCallback

as described in the documentation and follow this guide here to update your code

CodePudding user response：

According your API level register:

• onBackInvokedDispatcher.registerOnBackInvokedCallback for API level 33
• onBackPressedDispatcher callback for backword compatibility "API level 13 "

This requires to at least use appcompat:1.6.0-alpha03; the current is 1.6.0-alpha04:

 implementation 'androidx.appcompat:appcompat:1.6.0-alpha04'

if (BuildCompat.isAtLeastT()) {
    onBackInvokedDispatcher.registerOnBackInvokedCallback(
        OnBackInvokedDispatcher.PRIORITY_DEFAULT
    ) {
        // Back is pressed... Finishing the activity
        finish()
    }
} else {
    onBackPressedDispatcher.addCallback(
        this, // lifecycle owner
        object : OnBackPressedCallback(true) {
            override fun handleOnBackPressed() {
                // Back is pressed... Finishing the activity
                finish()
            }
        })
}

UPDATE:

Thanks to @ianhanniballake comment; you can just use OnBackPressedDispatcher even in API level 33

The OnBackPressedDispatcher is already going to be using the Android T specific API internally when using Activity 1.6 ,

So, you can just do:

onBackPressedDispatcher.addCallback(
    this, // lifecycle owner
    object : OnBackPressedCallback(true) {
        override fun handleOnBackPressed() {
            // Back is pressed... Finishing the activity
            finish()
        }
    })

Note that you shouldn't override the onBackPressed() as that will make the onBackPressedDispatcher callback not to fire; check this answer for clarifying that.