优化部分代码

rong_im/kit/src/main/java/io/rong/imkit/picture/PictureVideoPlayActivity.java

@@ -5,6 +5,7 @@ import android.content.ContextWrapper;
 import android.graphics.Color;
 import android.media.MediaPlayer;
 import android.os.Bundle;
+import android.text.TextUtils;
 import android.view.View;
 import android.view.WindowManager;
 import android.widget.ImageView;
@@ -44,6 +45,10 @@ public class PictureVideoPlayActivity extends PictureBaseActivity implements
     protected void initWidgets() {
         super.initWidgets();
         video_path = getIntent().getStringExtra("video_path");
+        if (TextUtils.isEmpty(video_path)) {
+            finish();
+            return;
+        }
         picture_left_back = findViewById(R.id.picture_left_back);
         mVideoView = findViewById(R.id.video_view);
         mVideoView.setBackgroundColor(Color.BLACK);