Android 启用/禁用WLAN直连功能_android11 禁用waln直连文件传输-优快云博客

本文链接：https://blog.youkuaiyun.com/passion_l/article/details/124693425

该博客主要介绍了在Android中如何实现Wi-Fi Direct（Wi-Fi P2P）功能，并通过ContentObserver监听Wi-Fi P2P的状态变化。在接收到状态改变时，会根据Wi-Fi P2P的开启或关闭状态来执行相应的操作，如取消连接、移除群组等。

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修改记录【mt67xx_11.0】

--- a/alps/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/wifi/p2p/WifiP2pSettings.java
+++ b/alps/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/wifi/p2p/WifiP2pSettings.java
@@ -61,6 +61,11 @@ import com.android.settingslib.core.AbstractPreferenceController;
 
 import java.util.ArrayList;
 import java.util.List;
+//add  start
+import android.provider.Settings;
+import android.database.ContentObserver;
+import android.os.Handler;
+//add end
 
 /*
  * Displays Wi-fi p2p settings UI
@@ -106,9 +111,43 @@ public class WifiP2pSettings extends DashboardFragment
 
     private WifiP2pDevice mThisDevice;
     private WifiP2pDeviceList mPeers = new WifiP2pDeviceList();
+    private Context mContext;//add
 
     @VisibleForTesting String mSavedDeviceName;
 
+    //add by start
+    private ContentObserver mWifiP2pEnableObserver = new ContentObserver(new Handler())
 {
+        @Override
+        public void onChange(boolean selfChange) {
+            boolean state = Settings.Global.getInt(mContext.getContentResolver(), "isWi
fiP2pEnable", 1) == 1; //这里如果直接用getContext()或activity.getApplicationContext()会有空指针报错
+            if (!state) {
+                if (mWifiP2pManager != null) {
+                    mWifiP2pManager.cancelConnect(mChannel,
+                            new WifiP2pManager.ActionListener() {
+                        public void onSuccess() {
+                            if (DBG) Log.d(TAG, " cancel connect success");
+                        }
+                        public void onFailure(int reason) {
+                            if (DBG) Log.d(TAG, " cancel connect fail " + reason);
+                        }
+                    });
+                    mWifiP2pManager.removeGroup(mChannel, new WifiP2pManager.ActionList
ener() {
+                        public void onSuccess() {
+                            if (DBG) Log.d(TAG, " remove group success");
+                        }
+                        public void onFailure(int reason) {
+                            if (DBG) Log.d(TAG, " remove group fail " + reason);
+                        }
+                    });
+                    mSelectedGroup = null;
+                }
+            }
+            handleP2pStateChanged();
+        }
+    };
+    //add end
+
     @VisibleForTesting
     final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
@@ -116,8 +155,12 @@ public class WifiP2pSettings extends DashboardFragment
             String action = intent.getAction();
 
             if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
-                mWifiP2pEnabled = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE,
-                    WifiP2pManager.WIFI_P2P_STATE_DISABLED) == WifiP2pManager.WIFI_P2P_
STATE_ENABLED;
+                //add by start
+                mContext = context;
+                boolean state = Settings.Global.getInt(context.getContentResolver(),"is
WifiP2pEnable",1) == 1;
+                mWifiP2pEnabled = (intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE,
+                    WifiP2pManager.WIFI_P2P_STATE_DISABLED) == WifiP2pManager.WIFI_P2P_
STATE_ENABLED) && state;
+                //add end
                 handleP2pStateChanged();
             } else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
                 mPeers = (WifiP2pDeviceList) intent.getParcelableExtra(
@@ -332,7 +375,10 @@ public class WifiP2pSettings extends DashboardFragment
                 }
             }
         };
-
+        //add start
+        activity.getApplicationContext().getContentResolver().registerContentObserver(
+                    Settings.Global.getUriFor("isWifiP2pEnable"), true,mWifiP2pEnableOb
server);
+        //add end
         super.onActivityCreated(savedInstanceState);
     }