fix bug

Flutter/android/src/main/java/com/tencent/vod/flutter/FTXPIPManager.java

@@ -2,6 +2,7 @@
 package com.tencent.vod.flutter;
 
 import android.app.Activity;
+import android.app.AppOpsManager;
 import android.app.PendingIntent;
 import android.app.PictureInPictureParams;
 import android.app.RemoteAction;
@@ -110,7 +111,10 @@ public class FTXPIPManager {
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                     params.mPipParams = new PictureInPictureParams.Builder();
                     updatePipActions(isPlaying, params);
-                    mActivity.enterPictureInPictureMode(params.mPipParams.build());
+                    boolean enterResult = mActivity.enterPictureInPictureMode(params.mPipParams.build());
+                    if(!enterResult) {
+                        pipResult = FTXEvent.ERROR_PIP_DENIED_PERMISSION;
+                    }
                 } else {
                     mActivity.enterPictureInPictureMode();
                 }
@@ -129,6 +133,9 @@ public class FTXPIPManager {
                 if (!isSuccess) {
                     pipResult = FTXEvent.ERROR_PIP_DENIED_PERMISSION;
                     Log.e(TAG, "enterPip failed,because PIP feature is disabled");
+                } else if(!hasPipPermission()) {
+                    pipResult = FTXEvent.ERROR_PIP_DENIED_PERMISSION;
+                    Log.e(TAG, "enterPip failed,because PIP has no permission");
                 }
             } else {
                 pipResult = FTXEvent.ERROR_PIP_LOWER_VERSION;
@@ -142,6 +149,17 @@ public class FTXPIPManager {
         return pipResult;
     }
 
+    private boolean hasPipPermission() {
+        AppOpsManager appOpsManager = (AppOpsManager) mActivity.getSystemService(Context.APP_OPS_SERVICE);
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
+            int permissionResult = appOpsManager.checkOpNoThrow(AppOpsManager.OPSTR_PICTURE_IN_PICTURE,
+                    android.os.Process.myUid(),mActivity.getPackageName());
+            return permissionResult == AppOpsManager.MODE_ALLOWED;
+        } else {
+            return false;
+        }
+    }
+
     public boolean isInPipMode() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             return mActivity.isInPictureInPictureMode();

Flutter/example/android/app/src/main/java/com/example/super_player_example/FTXFlutterPipActivity.java

@@ -122,10 +122,11 @@ public class FTXFlutterPipActivity extends FlutterActivity {
 
     @Override
     public boolean enterPictureInPictureMode(@NonNull PictureInPictureParams params) {
-        if (null != mEventSink) {
+        boolean enterResult = super.enterPictureInPictureMode(params);
+        if (enterResult && null != mEventSink) {
             mEventSink.success(getParams(EVENT_PIP_MODE_REQUEST_START, null));
         }
-        return super.enterPictureInPictureMode(params);
+        return enterResult;
     }
 
     private Map<String, Object> getParams(int event, Bundle bundle) {

Flutter/ios/Classes/FTXDownloadManager.m

@@ -4,7 +4,7 @@
 #import "FTXPlayerEventSinkQueue.h"
 #import "FTXEvent.h"
 #import "FTXDownloadManager.h"
-#import "TXVodPreloadManager.h"
+#import <TXLiteAVSDK_Player/TXVodPreloadManager.h>
 #import <TXLiteAVSDK_Player/TXVodDownloadManager.h>
 #import "FTXEvent.h"
 #import "CommonUtil.h"

Flutter/ios/Classes/FTXVodPlayer.m

@@ -66,11 +66,20 @@ BOOL volatile isStop = false;
         
         _netStatusChannel = [FlutterEventChannel eventChannelWithName:[@"cloud.tencent.com/txvodplayer/net/" stringByAppendingString:[self.playerId stringValue]] binaryMessenger:[registrar messenger]];
         [_netStatusChannel setStreamHandler:self];
+
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onApplicationTerminateClick) name:UIApplicationWillTerminateNotification object:nil];
     }
     
     return self;
 }
 
+- (void)onApplicationTerminateClick {
+    [_txVodPlayer removeVideoWidget];
+    _txVodPlayer = nil;
+    _txVodPlayer.videoProcessDelegate = nil;
+    _textureId = -1;
+}
+
 - (void)destory
 {
     [self stopPlay];