code clear

app/build.gradle

@@ -142,7 +142,7 @@ configurations.all {
 }
 
 dependencies {
-    implementation 'com.android.support:support-v4:28.+'
+    implementation "com.android.support:support-v4:$supportLibVersion"
 
     //noinspection GradleCompatible
     implementation "com.android.support:cardview-v7:$supportLibVersion"

app/src/main/java/com/sheep/jiuyan/samllsheep/SheepApp.java

@@ -63,8 +63,6 @@ import com.tencent.mm.opensdk.openapi.WXAPIFactory;
 import com.tencent.smtt.sdk.QbSdk;
 import com.umeng.commonsdk.UMConfigure;
 import com.umeng.socialize.PlatformConfig;
-import com.umeng.socialize.UMShareAPI;
-import com.uuzuche.lib_zxing.activity.ZXingLibrary;
 import com.youmi.android.offer.YmConfig;
 
 import org.xutils.x;