update minsdk

Author: chancerly

build.gradle

@@ -5,7 +5,7 @@ plugins {
 }
 
 ext {
-    minSdk = 26
+    minSdk = 21
     compileSdk = 34
     targetSdk = 31
     ndkVersion = "25.2.9519653"

jtik/build.gradle

@@ -10,7 +10,7 @@ android {
     compileSdk 33
 
     defaultConfig {
-        minSdk 26
+        minSdk rootProject.ext.minSdk
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles "consumer-rules.pro"

jtik/src/main/java/com/zxc/jtik/Jtik.java

@@ -23,6 +23,9 @@ public class Jtik {
 
     private static boolean sInitialized = false;
     public static synchronized boolean init(Context context) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O){
+            return false;
+        }
         if (sInitialized) {
             return false;
         }