修改minSdkVersion

Author: neilyhe

app/build.gradle

@@ -28,7 +28,7 @@ android {
     buildToolsVersion "29.0.2"
     defaultConfig {
         applicationId "com.tencent.iot.explorer.link.opensource"
-        minSdkVersion 21
+        minSdkVersion 26
         targetSdkVersion 29
         versionCode rootProject.ext.android.versionCode
         versionName rootProject.ext.android.versionName

sdk/video-link-android/build.gradle

@@ -10,7 +10,7 @@ android {
     buildToolsVersion "30.0.2"
 
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 24
         targetSdkVersion 29
         versionCode 1
         versionName "1.0"

sdkdemo/build.gradle

@@ -27,7 +27,7 @@ android {
     buildToolsVersion "29.0.2"
     defaultConfig {
         applicationId "com.tencent.iot.explorer.link.sdkdemo"
-        minSdkVersion 19
+        minSdkVersion 26
         targetSdkVersion 29
         versionCode 3
         versionName rootProject.ext.android.versionSDKDemoName