/
FragmentDestroyWatcher.kt
99 lines (88 loc) · 3.32 KB
/
FragmentDestroyWatcher.kt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
/*
* Copyright (C) 2018 Square, Inc.
*
* 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 leakcanary.internal
import android.app.Activity
import android.app.Application
import android.os.Build.VERSION.SDK_INT
import android.os.Build.VERSION_CODES.O
import android.os.Bundle
import leakcanary.AppWatcher
import leakcanary.ObjectWatcher
import leakcanary.internal.InternalAppWatcher.noOpDelegate
/**
* Internal class used to watch for fragments leaks.
*/
internal object FragmentDestroyWatcher {
private const val ANDROIDX_FRAGMENT_CLASS_NAME = "androidx.fragment.app.Fragment"
private const val ANDROIDX_FRAGMENT_DESTROY_WATCHER_CLASS_NAME =
"leakcanary.internal.AndroidXFragmentDestroyWatcher"
private const val ANDROID_SUPPORT_FRAGMENT_CLASS_NAME = "android.support.v4.app.Fragment"
private const val ANDROID_SUPPORT_FRAGMENT_DESTROY_WATCHER_CLASS_NAME =
"leakcanary.internal.AndroidSupportFragmentDestroyWatcher"
fun install(
application: Application,
objectWatcher: ObjectWatcher,
configProvider: () -> AppWatcher.Config
) {
val fragmentDestroyWatchers = mutableListOf<(Activity) -> Unit>()
if (SDK_INT >= O) {
fragmentDestroyWatchers.add(
AndroidOFragmentDestroyWatcher(objectWatcher, configProvider)
)
}
if (classAvailable(ANDROIDX_FRAGMENT_CLASS_NAME) &&
classAvailable(ANDROIDX_FRAGMENT_DESTROY_WATCHER_CLASS_NAME)
) {
val watcherConstructor = Class.forName(ANDROIDX_FRAGMENT_DESTROY_WATCHER_CLASS_NAME)
.getDeclaredConstructor(ObjectWatcher::class.java, Function0::class.java)
@kotlin.Suppress("UNCHECKED_CAST")
fragmentDestroyWatchers.add(
watcherConstructor.newInstance(objectWatcher, configProvider) as (Activity) -> Unit
)
}
if (classAvailable(ANDROID_SUPPORT_FRAGMENT_CLASS_NAME) &&
classAvailable(ANDROID_SUPPORT_FRAGMENT_DESTROY_WATCHER_CLASS_NAME)
) {
val watcherConstructor = Class.forName(ANDROID_SUPPORT_FRAGMENT_DESTROY_WATCHER_CLASS_NAME)
.getDeclaredConstructor(ObjectWatcher::class.java, Function0::class.java)
@kotlin.Suppress("UNCHECKED_CAST")
fragmentDestroyWatchers.add(
watcherConstructor.newInstance(objectWatcher, configProvider) as (Activity) -> Unit
)
}
if (fragmentDestroyWatchers.size == 0) {
return
}
application.registerActivityLifecycleCallbacks(object : Application.ActivityLifecycleCallbacks by noOpDelegate() {
override fun onActivityCreated(
activity: Activity,
savedInstanceState: Bundle?
) {
for (watcher in fragmentDestroyWatchers) {
watcher(activity)
}
}
})
}
private fun classAvailable(className: String): Boolean {
return try {
Class.forName(className)
true
} catch (e: ClassNotFoundException) {
false
}
}
}