Separate core components in its own module

1 files changed, 48 insertions, 0 deletions

diff --git a/core/src/main/kotlin/ca/allanwang/kau/utils/PackageUtils.kt b/core/src/main/kotlin/ca/allanwang/kau/utils/PackageUtils.kt
new file mode 100644
index 0000000..837c209
--- /dev/null
+++ b/core/src/main/kotlin/ca/allanwang/kau/utils/PackageUtils.kt
@@ -0,0 +1,48 @@
+package ca.allanwang.kau.utils
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Build
+import android.support.annotation.RequiresApi
+
+/**
+ * Created by Allan Wang on 2017-06-23.
+ */
+
+/**
+ * Checks if a given package is installed
+ * @param packageName packageId
+ * @return true if installed with activity, false otherwise
+ */
+@KauUtils fun Context.isAppInstalled(packageName: String): Boolean {
+    val pm = packageManager
+    var installed: Boolean
+    try {
+        pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES)
+        installed = true
+    } catch (e: PackageManager.NameNotFoundException) {
+        installed = false
+    }
+    return installed
+}
+
+val buildIsLollipopAndUp: Boolean
+    get() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
+
+val buildIsMarshmallowAndUp: Boolean
+    get() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
+
+val buildIsNougatAndUp: Boolean
+    get() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N
+
+const val INSTALLER_GOOGLE_PLAY_VENDING = "com.android.vending"
+const val INSTALLER_GOOGLE_PLAY_FEEDBACK = "com.google.android.feedback"
+
+val Context.installerPackageName: String?
+    get() = packageManager.getInstallerPackageName(packageName)
+
+val Context.isFromGooglePlay: Boolean
+    get() {
+        val installer = installerPackageName
+        return arrayOf(INSTALLER_GOOGLE_PLAY_FEEDBACK, INSTALLER_GOOGLE_PLAY_VENDING).any { it == installer }
+    }
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