blob: 62f7a7791b03d6bed2c32f2b5fb1a317dca86dfb (
plain)
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
|
/*
* This file is part of GNU Taler
* (C) 2020 Taler Systems S.A.
*
* GNU Taler is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 3, or (at your option) any later version.
*
* GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
package net.taler.cashier
import android.content.Context
import android.content.Context.CONNECTIVITY_SERVICE
import android.net.ConnectivityManager
import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
import android.os.Build.VERSION.SDK_INT
import android.view.View
import android.view.View.INVISIBLE
import android.view.View.VISIBLE
object Utils {
private const val HEX_CHARS = "0123456789ABCDEF"
fun hexStringToByteArray(data: String): ByteArray {
val result = ByteArray(data.length / 2)
for (i in data.indices step 2) {
val firstIndex = HEX_CHARS.indexOf(data[i])
val secondIndex = HEX_CHARS.indexOf(data[i + 1])
val octet = firstIndex.shl(4).or(secondIndex)
result[i.shr(1)] = octet.toByte()
}
return result
}
private val HEX_CHARS_ARRAY = HEX_CHARS.toCharArray()
@Suppress("unused")
fun toHex(byteArray: ByteArray): String {
val result = StringBuffer()
byteArray.forEach {
val octet = it.toInt()
val firstIndex = (octet and 0xF0).ushr(4)
val secondIndex = octet and 0x0F
result.append(HEX_CHARS_ARRAY[firstIndex])
result.append(HEX_CHARS_ARRAY[secondIndex])
}
return result.toString()
}
}
fun View.fadeIn(endAction: () -> Unit = {}) {
if (visibility == VISIBLE) return
alpha = 0f
visibility = VISIBLE
animate().alpha(1f).withEndAction {
endAction.invoke()
}.start()
}
fun View.fadeOut(endAction: () -> Unit = {}) {
if (visibility == INVISIBLE) return
animate().alpha(0f).withEndAction {
visibility = INVISIBLE
alpha = 1f
endAction.invoke()
}.start()
}
fun Context.isOnline(): Boolean {
val cm = getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager
return if (SDK_INT < 29) {
@Suppress("DEPRECATION")
cm.activeNetworkInfo?.isConnected == true
} else {
val capabilities = cm.getNetworkCapabilities(cm.activeNetwork) ?: return false
capabilities.hasCapability(NET_CAPABILITY_INTERNET)
}
}
|