diff --git a/app/src/main/java/com/github/tvbox/osc/ui/activity/DetailActivity.java b/app/src/main/java/com/github/tvbox/osc/ui/activity/DetailActivity.java
index 1820939c..b3048449 100644
--- a/app/src/main/java/com/github/tvbox/osc/ui/activity/DetailActivity.java
+++ b/app/src/main/java/com/github/tvbox/osc/ui/activity/DetailActivity.java
@@ -5,12 +5,16 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.text.Html;
 import android.text.TextUtils;
+import android.view.KeyEvent;
 import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.fragment.app.FragmentContainerView;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
@@ -28,6 +32,7 @@ import com.github.tvbox.osc.picasso.RoundTransformation;
 import com.github.tvbox.osc.ui.adapter.SeriesAdapter;
 import com.github.tvbox.osc.ui.adapter.SeriesFlagAdapter;
 import com.github.tvbox.osc.ui.dialog.QuickSearchDialog;
+import com.github.tvbox.osc.ui.fragment.PlayFragment;
 import com.github.tvbox.osc.util.DefaultConfig;
 import com.github.tvbox.osc.util.FastClickCheckUtil;
 import com.github.tvbox.osc.util.MD5;
@@ -63,6 +68,10 @@ import me.jessyan.autosize.utils.AutoSizeUtils;
  */
 public class DetailActivity extends BaseActivity {
     private LinearLayout llLayout;
+    private FragmentContainerView llPlayerFragmentContainer;
+    private View llPlayerFragmentContainerBlock;
+    private View llPlayerPlace;
+    private PlayFragment playFragment = null;
     private ImageView ivThumb;
     private TextView tvName;
     private TextView tvYear;
@@ -105,7 +114,12 @@ public class DetailActivity extends BaseActivity {
 
     private void initView() {
         llLayout = findViewById(R.id.llLayout);
+        llPlayerPlace = findViewById(R.id.previewPlayerPlace);
+        llPlayerFragmentContainer = findViewById(R.id.previewPlayer);
+        llPlayerFragmentContainerBlock = findViewById(R.id.previewPlayerBlock);
         ivThumb = findViewById(R.id.ivThumb);
+        llPlayerPlace.setVisibility(showPreview ? View.VISIBLE : View.GONE);
+        ivThumb.setVisibility(!showPreview ? View.VISIBLE : View.GONE);
         tvName = findViewById(R.id.tvName);
         tvYear = findViewById(R.id.tvYear);
         tvSite = findViewById(R.id.tvSite);
@@ -130,6 +144,12 @@ public class DetailActivity extends BaseActivity {
         mGridViewFlag.setLayoutManager(new V7LinearLayoutManager(this.mContext, 0, false));
         seriesFlagAdapter = new SeriesFlagAdapter();
         mGridViewFlag.setAdapter(seriesFlagAdapter);
+        if (showPreview) {
+            playFragment = new PlayFragment();
+            getSupportFragmentManager().beginTransaction().add(R.id.previewPlayer, playFragment).commit();
+            getSupportFragmentManager().beginTransaction().show(playFragment).commitAllowingStateLoss();
+            tvPlay.setText("全屏");
+        }
         tvSort.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -145,7 +165,11 @@ public class DetailActivity extends BaseActivity {
             @Override
             public void onClick(View v) {
                 FastClickCheckUtil.check(v);
-                jumpToPlay();
+                if (showPreview) {
+                    toggleFullPreview();
+                } else {
+                    jumpToPlay();
+                }
             }
         });
         tvQuickSearch.setOnClickListener(new View.OnClickListener() {
@@ -253,6 +277,8 @@ public class DetailActivity extends BaseActivity {
                     seriesAdapter.getData().get(vodInfo.playIndex).selected = true;
                     seriesAdapter.notifyItemChanged(vodInfo.playIndex);
                     jumpToPlay();
+                    if (showPreview && !fullWindows)
+                        toggleFullPreview();
                 }
             }
         });
@@ -268,7 +294,11 @@ public class DetailActivity extends BaseActivity {
             insertVod(sourceKey, vodInfo);
             bundle.putString("sourceKey", sourceKey);
             bundle.putSerializable("VodInfo", vodInfo);
-            jumpActivity(PlayActivity.class, bundle);
+            if (showPreview) {
+                playFragment.setData(bundle);
+            } else {
+                jumpActivity(PlayActivity.class, bundle);
+            }
         }
     }
 
@@ -381,6 +411,11 @@ public class DetailActivity extends BaseActivity {
                         mGridViewFlag.scrollToPosition(flagScrollTo);
 
                         refreshList();
+                        if (showPreview) {
+                            jumpToPlay();
+                            llPlayerFragmentContainer.setVisibility(View.VISIBLE);
+                            llPlayerFragmentContainerBlock.setVisibility(View.VISIBLE);
+                        }
                         // startQuickSearch();
                     } else {
                         mGridViewFlag.setVisibility(View.GONE);
@@ -390,6 +425,8 @@ public class DetailActivity extends BaseActivity {
                     }
                 } else {
                     showEmpty();
+                    llPlayerFragmentContainer.setVisibility(View.GONE);
+                    llPlayerFragmentContainerBlock.setVisibility(View.GONE);
                 }
             }
         });
@@ -425,7 +462,7 @@ public class DetailActivity extends BaseActivity {
             if (event.obj != null) {
                 if (event.obj instanceof Integer) {
                     int index = (int) event.obj;
-                    if (index != vodInfo.playIndex) {
+                    // if (index != vodInfo.playIndex) {
                         seriesAdapter.getData().get(vodInfo.playIndex).selected = false;
                         seriesAdapter.notifyItemChanged(vodInfo.playIndex);
                         seriesAdapter.getData().get(index).selected = true;
@@ -434,7 +471,7 @@ public class DetailActivity extends BaseActivity {
                         vodInfo.playIndex = index;
                         //保存历史
                         insertVod(sourceKey, vodInfo);
-                    }
+                   // }
                 } else if (event.obj instanceof JSONObject) {
                     vodInfo.playerCfg = ((JSONObject) event.obj).toString();
                     //保存历史
@@ -596,6 +633,12 @@ public class DetailActivity extends BaseActivity {
 
     @Override
     public void onBackPressed() {
+        if (fullWindows) {
+            if (playFragment.onBackPressed())
+                return;
+            toggleFullPreview();
+            return;
+        }
         if (seriesSelect) {
             if (seriesFlagFocus != null && !seriesFlagFocus.isFocused()) {
                 seriesFlagFocus.requestFocus();
@@ -604,4 +647,32 @@ public class DetailActivity extends BaseActivity {
         }
         super.onBackPressed();
     }
-}
\ No newline at end of file
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        if (event != null && playFragment != null && fullWindows) {
+            if (playFragment.dispatchKeyEvent(event)) {
+                return true;
+            }
+        }
+        return super.dispatchKeyEvent(event);
+    }
+
+    // preview
+    boolean showPreview = true; // true 开启 false 关闭
+    boolean fullWindows = false;
+    ViewGroup.LayoutParams windowsPreview = null;
+    ViewGroup.LayoutParams windowsFull = null;
+
+    void toggleFullPreview() {
+        if (windowsPreview == null) {
+            windowsPreview = llPlayerFragmentContainer.getLayoutParams();
+        }
+        if (windowsFull == null) {
+            windowsFull = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
+        }
+        fullWindows = !fullWindows;
+        llPlayerFragmentContainer.setLayoutParams(fullWindows ? windowsFull : windowsPreview);
+        llPlayerFragmentContainerBlock.setVisibility(fullWindows ? View.GONE : View.VISIBLE);
+    }
+}