Pros of Dexter

• Simpler API with a more fluent interface
• Supports checking multiple permissions at once
• Provides built-in rationale handling

Cons of Dexter

• Less actively maintained (last update in 2019)
• Fewer configuration options compared to PermissionsDispatcher
• Limited support for newer Android versions and features

Code Comparison

Dexter:

Dexter.withContext(this)
    .withPermission(Manifest.permission.CAMERA)
    .withListener(object : PermissionListener {
        override fun onPermissionGranted(response: PermissionGrantedResponse) { /* ... */ }
        override fun onPermissionDenied(response: PermissionDeniedResponse) { /* ... */ }
        override fun onPermissionRationaleShouldBeShown(permission: PermissionRequest, token: PermissionToken) { /* ... */ }
    }).check()

PermissionsDispatcher:

@RuntimePermissions
class MainActivity : AppCompatActivity() {
    @NeedsPermission(Manifest.permission.CAMERA)
    fun showCamera() { /* ... */ }

    @OnShowRationale(Manifest.permission.CAMERA)
    fun showRationaleForCamera(request: PermissionRequest) { /* ... */ }

    @OnPermissionDenied(Manifest.permission.CAMERA)
    fun onCameraDenied() { /* ... */ }
}

Both libraries aim to simplify Android runtime permissions, but they differ in approach. Dexter offers a more straightforward API with built-in rationale handling, while PermissionsDispatcher uses annotation processing for a more declarative style. PermissionsDispatcher is more actively maintained and offers more configuration options, making it potentially better suited for complex permission scenarios and long-term projects.

Pros of RxPermissions

• Integrates seamlessly with RxJava, allowing for reactive programming patterns
• Lightweight and simple API, requiring less boilerplate code
• Supports chaining multiple permission requests easily

Cons of RxPermissions

• Requires knowledge of RxJava, which may have a steeper learning curve
• Less feature-rich compared to PermissionsDispatcher (e.g., no built-in rationale handling)
• May not be suitable for projects not already using RxJava

Code Comparison

RxPermissions:

RxPermissions(this)
    .request(Manifest.permission.CAMERA)
    .subscribe { granted ->
        if (granted) {
            // Permission granted
        }
    }

PermissionsDispatcher:

@RuntimePermissions
class MainActivity : AppCompatActivity() {
    @NeedsPermission(Manifest.permission.CAMERA)
    fun showCamera() {
        // Camera permission granted
    }
}

Summary

RxPermissions is ideal for projects already using RxJava and preferring a reactive approach. It offers a concise API but requires RxJava knowledge. PermissionsDispatcher provides a more feature-rich solution with annotation-based processing, making it easier to handle complex permission scenarios but with more generated code. Choose based on your project's needs and team's expertise.

Pros of EasyPermissions

• Simpler API with less boilerplate code
• Easier integration for basic permission handling scenarios
• Supports both Activity and Fragment

Cons of EasyPermissions

• Less flexibility for complex permission scenarios
• Limited customization options compared to PermissionsDispatcher
• Fewer features for handling edge cases

Code Comparison

EasyPermissions:

@AfterPermissionGranted(RC_CAMERA_AND_LOCATION)
private fun methodRequiresTwoPermission() {
    val perms = arrayOf(Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION)
    if (EasyPermissions.hasPermissions(this, *perms)) {
        // Already have permission, do the thing
    } else {
        // Do not have permissions, request them now
        EasyPermissions.requestPermissions(this, getString(R.string.camera_and_location_rationale),
                RC_CAMERA_AND_LOCATION, *perms)
    }
}

PermissionsDispatcher:

@RuntimePermissions
class MainActivity : AppCompatActivity() {

    @NeedsPermission(Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION)
    fun showCamera() {
        // Camera and Location permission is granted
    }

    @OnShowRationale(Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION)
    fun showRationaleForCamera(request: PermissionRequest) {
        // Show rationale and request permission
    }
}

Both libraries aim to simplify Android runtime permissions, but PermissionsDispatcher offers more granular control at the cost of increased complexity, while EasyPermissions provides a more straightforward approach for simpler use cases.

Pros of TedPermission

• Simpler API and easier to use for basic permission requests
• Supports custom rationale messages for permission requests
• Includes a pre-built UI for permission requests

Cons of TedPermission

• Less flexibility for complex permission scenarios
• Not as actively maintained as PermissionsDispatcher
• Fewer configuration options for fine-tuning permission behavior

Code Comparison

TedPermission:

TedPermission.create()
    .setPermissions(Manifest.permission.CAMERA)
    .check()

PermissionsDispatcher:

@RuntimePermissions
class MainActivity : AppCompatActivity() {
    @NeedsPermission(Manifest.permission.CAMERA)
    fun showCamera() {
        // Camera-related code
    }
}

TedPermission offers a more concise API for simple permission requests, while PermissionsDispatcher uses annotations for a more declarative approach. PermissionsDispatcher generates code at compile-time, which can lead to better performance but requires an additional annotation processing step.

Both libraries aim to simplify Android runtime permissions, but they cater to different use cases. TedPermission is more suitable for quick implementations, while PermissionsDispatcher offers more control and is better suited for complex permission scenarios in larger applications.

Pros of PermissionsDispatcher

• Simplifies runtime permissions handling in Android apps
• Uses annotation processing to generate boilerplate code
• Supports both Java and Kotlin

Cons of PermissionsDispatcher

• Requires additional setup and configuration
• May increase build time due to annotation processing
• Limited flexibility for complex permission scenarios

Code Comparison

PermissionsDispatcher:

@RuntimePermissions
class MainActivity : AppCompatActivity() {
    @NeedsPermission(Manifest.permission.CAMERA)
    fun showCamera() {
        // Camera-related code
    }
}

Standard Android approach:

class MainActivity : AppCompatActivity() {
    private fun showCamera() {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) 
            == PackageManager.PERMISSION_GRANTED) {
            // Camera-related code
        } else {
            ActivityCompat.requestPermissions(this, 
                arrayOf(Manifest.permission.CAMERA), CAMERA_PERMISSION_CODE)
        }
    }
}

PermissionsDispatcher simplifies permission handling by generating the necessary code, reducing boilerplate and potential errors. However, it requires additional setup and may increase build time. The standard Android approach offers more flexibility but requires more manual code writing and error handling.