统一升级Android依赖包，AndroidX

app/src/main/java/com/mogo/cloud/BaseLiveActivity.java

@@ -1,7 +1,6 @@
 package com.mogo.cloud;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
@@ -10,6 +9,8 @@ import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.ToggleButton;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import com.mogo.cloud.util.YuvToolUtils;
 import com.zhidao.manager.camera.FrameBufferCallBack;
 import com.zhidao.manager.camera.ZDCameraManager;