diff options
Diffstat (limited to 'taler-kotlin-android/src/main/java/net/taler/common/AndroidUtils.kt')
-rw-r--r-- | taler-kotlin-android/src/main/java/net/taler/common/AndroidUtils.kt | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/taler-kotlin-android/src/main/java/net/taler/common/AndroidUtils.kt b/taler-kotlin-android/src/main/java/net/taler/common/AndroidUtils.kt new file mode 100644 index 0000000..b46f306 --- /dev/null +++ b/taler-kotlin-android/src/main/java/net/taler/common/AndroidUtils.kt @@ -0,0 +1,123 @@ +/* + * 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.common + +import android.content.Context +import android.content.Context.CONNECTIVITY_SERVICE +import android.content.Intent +import android.content.pm.PackageManager.MATCH_DEFAULT_ONLY +import android.net.ConnectivityManager +import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET +import android.os.Build.VERSION.SDK_INT +import android.os.Looper +import android.text.format.DateUtils.DAY_IN_MILLIS +import android.text.format.DateUtils.FORMAT_ABBREV_ALL +import android.text.format.DateUtils.FORMAT_ABBREV_MONTH +import android.text.format.DateUtils.FORMAT_ABBREV_RELATIVE +import android.text.format.DateUtils.FORMAT_NO_YEAR +import android.text.format.DateUtils.FORMAT_SHOW_DATE +import android.text.format.DateUtils.FORMAT_SHOW_TIME +import android.text.format.DateUtils.FORMAT_SHOW_YEAR +import android.text.format.DateUtils.MINUTE_IN_MILLIS +import android.text.format.DateUtils.formatDateTime +import android.text.format.DateUtils.getRelativeTimeSpanString +import android.view.View +import android.view.View.INVISIBLE +import android.view.View.VISIBLE +import android.view.inputmethod.InputMethodManager +import androidx.core.content.ContextCompat.getSystemService +import androidx.fragment.app.Fragment +import androidx.navigation.NavDirections +import androidx.navigation.fragment.findNavController + +fun View.fadeIn(endAction: () -> Unit = {}) { + if (visibility == VISIBLE && alpha == 1f) return + alpha = 0f + visibility = VISIBLE + animate().alpha(1f).withEndAction { + if (context != null) endAction.invoke() + }.start() +} + +fun View.fadeOut(endAction: () -> Unit = {}) { + if (visibility == INVISIBLE) return + animate().alpha(0f).withEndAction { + if (context == null) return@withEndAction + visibility = INVISIBLE + alpha = 1f + endAction.invoke() + }.start() +} + +fun View.hideKeyboard() { + getSystemService(context, InputMethodManager::class.java) + ?.hideSoftInputFromWindow(windowToken, 0) +} + +fun assertUiThread() { + check(Looper.getMainLooper().thread == Thread.currentThread()) +} + +/** + * Use this with 'when' expressions when you need it to handle all possibilities/branches. + */ +val <T> T.exhaustive: T + get() = this + +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) + } +} + +fun Intent.isSafe(context: Context): Boolean { + return context.packageManager.queryIntentActivities(this, MATCH_DEFAULT_ONLY).isNotEmpty() +} + +fun Fragment.navigate(directions: NavDirections) = findNavController().navigate(directions) + +fun Long.toRelativeTime(context: Context): CharSequence { + val now = System.currentTimeMillis() + return if (now - this > DAY_IN_MILLIS * 2) { + val flags = FORMAT_SHOW_TIME or FORMAT_SHOW_DATE or FORMAT_ABBREV_MONTH or FORMAT_NO_YEAR + formatDateTime(context, this, flags) + } else getRelativeTimeSpanString(this, now, MINUTE_IN_MILLIS, FORMAT_ABBREV_RELATIVE) +} + +fun Long.toAbsoluteTime(context: Context): CharSequence { + val flags = FORMAT_SHOW_TIME or FORMAT_SHOW_DATE or FORMAT_SHOW_YEAR + return formatDateTime(context, this, flags) +} + +fun Long.toShortDate(context: Context): CharSequence { + val flags = FORMAT_SHOW_DATE or FORMAT_SHOW_YEAR or FORMAT_ABBREV_ALL + return formatDateTime(context, this, flags) +} + +fun Version.getIncompatibleStringOrNull(context: Context, otherVersion: String): String? { + val other = Version.parse(otherVersion) ?: return context.getString(R.string.version_invalid) + val match = compare(other) ?: return context.getString(R.string.version_invalid) + if (match.compatible) return null + if (match.currentCmp < 0) return context.getString(R.string.version_too_old) + if (match.currentCmp > 0) return context.getString(R.string.version_too_new) + throw AssertionError("$this == $other") +} |