如何在廣播reciever（）的onrecieve一次顯示一個麪包不要一次

Question

我在OnRecieve（限制敬酒消息）廣播reciever的一個奇怪的問題

我寫的代碼顯示敬酒時WiFi和藍牙都啓用/禁用

，但如果我啓用/禁用無線網絡，烤麪包藍牙也出現，反之亦然一個，即出現一個所有4敬酒的消息時，我enble /關閉藍牙和WiFi

我想要什麼要做的是我想顯示一個烤麪包時，無線網關/開，也bluettoth個人

像

if WIFI is on - "wifi enabled" 
if WIFI is off - "wifi disabled" 
If bluetooth is on - "Bluetooth enabled" 
If bluetooth is off - "Bluetooth disabled" 

只有一個麪包而不是一次全部

如何解決這個問題？

任何幫助表示讚賞，感謝

這裏是我的代碼

public class MyService extends BroadcastReceiver { 
private WifiManager wifiManager; 
@Override 
public void onReceive(Context context, Intent arg1) { 
    // TODO Auto-generated method stub 

    wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); 
     BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 

    if(wifiManager.isWifiEnabled()){ 
     Toast.makeText(context.getApplicationContext(), "WIFI Enabled", Toast.LENGTH_LONG).show(); 
    }else {  
     Toast.makeText(context.getApplicationContext(), "WIFI Disabled", Toast.LENGTH_LONG).show(); 
    } 
    if(adapter.isEnabled()){ 

     Toast.makeText(context.getApplicationContext(), "Bluetooth Enabled", Toast.LENGTH_LONG).show(); 

    }else {  
     Toast.makeText(context.getApplicationContext(), " Bluetooth Disabled", Toast.LENGTH_LONG).show(); 
    } 

} 

Answer 1

接收機獲取調用每當無線狀態是changed.And你表現祝酒WiFi和Bluetooth.So其顯示兩個吐司。它不是這樣的，當藍牙啓用或禁用你的WiFi是沒有啓用或禁用。無線和藍牙都啓用或禁用狀態。

解決你的問題，你可以嘗試像

public void onReceive(Context context, Intent arg1) { 
    // TODO Auto-generated method stub 
    if(arg1.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) { 
      wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); 
      if(wifiManager.getWifiState()==WifiManager.WIFI_STATE_ENABLED||wifiManager.getWifiState()==WifiManager.WIFI_STATE_ENABLING){ 
        Toast.makeText(context.getApplicationContext(), "WIFI Enabled", Toast.LENGTH_LONG).show(); 
      }else {  
        Toast.makeText(context.getApplicationContext(), "WIFI Disabled", Toast.LENGTH_LONG).show(); 
      } 
    }else { 
      BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 
      if(adapter.isEnabled()){ 
        Toast.makeText(context.getApplicationContext(), "Bluetooth Enabled", Toast.LENGTH_LONG).show(); 

      }else {  
        Toast.makeText(context.getApplicationContext(), " Bluetooth Disabled", Toast.LENGTH_LONG).show(); 
      } 
    }    
} 

Answer 2

在你的代碼有兩個不同的如果條件，這是你所得到的顯示兩幅吐司的唯一原因。看看我在這裏更新的代碼，它會解決你的問題。

public class MyService extends BroadcastReceiver 
{ 
    private WifiManager wifiManager; 
    @Override 
    public void onReceive(Context context, Intent arg1) 
    { 
     // TODO Auto-generated method stub 
     wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); 
     BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 

     if(wifiManager.isWifiEnabled()) 
     { 
      Toast.makeText(context.getApplicationContext(), "WIFI Enabled", Toast.LENGTH_LONG).show(); 
     } 
     else if (!wifiManager.isWifiEnabled()) 
     {  
      Toast.makeText(context.getApplicationContext(), "WIFI Disabled", Toast.LENGTH_LONG).show(); 
     } 
     else if(adapter.isEnabled()) 
     { 
      Toast.makeText(context.getApplicationContext(), "Bluetooth Enabled", Toast.LENGTH_LONG).show(); 
     } 
     else if (!adapter.isEnabled()) 
     {  
      Toast.makeText(context.getApplicationContext(), " Bluetooth Disabled", Toast.LENGTH_LONG).show(); 
     } 
    } 
}