upgrade to gradle 8.7.2 and minSDKVersion to 21

build.gradle

@@ -9,7 +9,7 @@ buildscript {
         maven {url 'https://developer.huawei.com/repo/'}
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.6.0'
+        classpath 'com.android.tools.build:gradle:8.7.2'
         classpath 'com.huawei.agconnect:agcp:1.9.1.300'
        // classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 

client/build.gradle

@@ -7,7 +7,7 @@ android {
 
 
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 21
         targetSdkVersion 34
 
         // testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

emojilibrary/build.gradle

@@ -5,7 +5,7 @@ android {
 
 
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 21
         targetSdkVersion 33
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

imagepicker/build.gradle

@@ -4,7 +4,7 @@ android {
     compileSdkVersion 34
 
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 21
         targetSdkVersion 34
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"