权限对话框未显示在 android 中

Question

I am using Dexter library for camera permission in my app.When user clicks on button I want to check permission but when I am clicking on button no permission is checked. Below is my code:

class MainActivity : AppCompatActivity(), PermissionListener {
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    choose.setOnClickListener {
        Toast.makeText(applicationContext,"HEllo",Toast.LENGTH_SHORT).show();
        Dexter.withActivity(this)
            .withPermission(android.Manifest.permission.CAMERA)
            .withListener(this)
    }
}

override fun onPermissionGranted(response: PermissionGrantedResponse?) {
    Toast.makeText(applicationContext,"Granted",Toast.LENGTH_SHORT).show();
}

override fun onPermissionRationaleShouldBeShown(
    permission: PermissionRequest?,
    token: PermissionToken?
) {

}

override fun onPermissionDenied(response: PermissionDeniedResponse?) {
    Toast.makeText(applicationContext,"Denied",Toast.LENGTH_SHORT).show();
}
}  

Someone please let me know what I am doing wrong.Any help would be appreciated.

THANKS

Answer 1

I am using Dexter library for camera permission in my app.When user clicks on button I want to check permission but when I am clicking on button no permission is checked. Below is my code:

class MainActivity : AppCompatActivity(), PermissionListener {
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    choose.setOnClickListener {
        Toast.makeText(applicationContext,"HEllo",Toast.LENGTH_SHORT).show();
        Dexter.withActivity(this)
            .withPermission(android.Manifest.permission.CAMERA)
            .withListener(this)
    }
}

override fun onPermissionGranted(response: PermissionGrantedResponse?) {
    Toast.makeText(applicationContext,"Granted",Toast.LENGTH_SHORT).show();
}

override fun onPermissionRationaleShouldBeShown(
    permission: PermissionRequest?,
    token: PermissionToken?
) {

}

override fun onPermissionDenied(response: PermissionDeniedResponse?) {
    Toast.makeText(applicationContext,"Denied",Toast.LENGTH_SHORT).show();
}
}  

Someone please let me know what I am doing wrong.Any help would be appreciated.

THANKS

Answer 2

You need to call .check() while requesting the permission

Dexter.withActivity(this)
            .withPermission(android.Manifest.permission.CAMERA)
            .withListener(this).check()