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Change MainActivity to ImageSelectFragment
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59 changes: 59 additions & 0 deletions
59
app/src/main/java/com/naver/android/helloyako/imagecropsample/Event.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * Copyright (C) 2019 The Android Open Source Project | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.naver.android.helloyako.imagecropsample | ||
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| import androidx.lifecycle.Observer | ||
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| /** | ||
| * Used as a wrapper for data that is exposed via a LiveData that represents an event. | ||
| */ | ||
| open class Event<out T>(private val content: T) { | ||
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| @Suppress("MemberVisibilityCanBePrivate") | ||
| var hasBeenHandled = false | ||
| private set // Allow external read but not write | ||
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| /** | ||
| * Returns the content and prevents its use again. | ||
| */ | ||
| fun getContentIfNotHandled(): T? { | ||
| return if (hasBeenHandled) { | ||
| null | ||
| } else { | ||
| hasBeenHandled = true | ||
| content | ||
| } | ||
| } | ||
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| /** | ||
| * Returns the content, even if it's already been handled. | ||
| */ | ||
| fun peekContent(): T = content | ||
| } | ||
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| /** | ||
| * An [Observer] for [Event]s, simplifying the pattern of checking if the [Event]'s content has | ||
| * already been handled. | ||
| * | ||
| * [onEventUnhandledContent] is *only* called if the [Event]'s contents has not been handled. | ||
| */ | ||
| class EventObserver<T>(private val onEventUnhandledContent: (T) -> Unit) : Observer<Event<T>> { | ||
| override fun onChanged(event: Event<T>?) { | ||
| event?.getContentIfNotHandled()?.let { | ||
| onEventUnhandledContent(it) | ||
| } | ||
| } | ||
| } |
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9
app/src/main/java/com/naver/android/helloyako/imagecropsample/crop/CropFragment.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,24 +1,33 @@ | ||
| package com.naver.android.helloyako.imagecropsample.crop | ||
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| import android.os.Bundle | ||
| import android.util.Log | ||
| import android.view.LayoutInflater | ||
| import android.view.View | ||
| import android.view.ViewGroup | ||
| import androidx.fragment.app.Fragment | ||
| import androidx.navigation.fragment.navArgs | ||
| import com.naver.android.helloyako.imagecropsample.databinding.FragmentCropBinding | ||
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| class CropFragment : Fragment() { | ||
| private lateinit var viewDataBinding: FragmentCropBinding | ||
| private val viewModel = CropViewModel() | ||
| val args: CropFragmentArgs by navArgs() | ||
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| override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { | ||
| viewDataBinding = FragmentCropBinding.inflate(inflater, container, false).apply { | ||
| viewmodel = viewModel | ||
| } | ||
| Log.d(TAG, "uri : ${args.uri}") | ||
| return viewDataBinding.root | ||
| } | ||
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| override fun onActivityCreated(savedInstanceState: Bundle?) { | ||
| super.onActivityCreated(savedInstanceState) | ||
| viewDataBinding.lifecycleOwner = this.viewLifecycleOwner | ||
| } | ||
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| companion object { | ||
| private const val TAG = "CropFragment" | ||
| } | ||
| } |
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