用于使Wi-Fi连接稳定的Android代码

Question

我正在研究一种不断从WiFi中断开连接的Android Wear应用程序。有没有一种方法可以保持WiFi连接稳定编程？我知道更多的硬件问题，但我看到一些有助于保持WiFi连接稳定的应用程序。

Answer 1

正如你所说，这是一个硬件问题。我可以建议的最好的是运行任何你可以离线，然后有联机功能赶上连接变得可用

Answer 2

您可以使用broadcastreceiver检查互联网连接或不像下面。

Manifest.Java

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<!-- This permissions are neccessary for broadcast receiver --> 
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 

<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity android:name=".MainActivity"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <receiver 
     android:name=".Receiver" 
     android:enabled="true" > 
     <intent-filter> 

      <!-- Intent filters for broadcast receiver --> 
      <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> 
      <action android:name="android.net.wifi.WIFI_STATE_CHANGED" /> 
      <action android:name="android.net.wifi.STATE_CHANGE" /> 
     </intent-filter> 
    </receiver> 
</application> 

MyApplication.Java

公共类MyApplication的延伸可变的应用{ // Gloabl声明在整个应用程序

使用

public static boolean activityVisible; // Variable that will check the 
// current activity state 

public static boolean isActivityVisible() { 
    return activityVisible; // return true or false 
} 

public static void activityResumed() { 
    activityVisible = true;// this will set true when activity resumed 

} 

public static void activityPaused() { 
    activityVisible = false;// this will set false when activity paused 

} 

}

Receiver.Java

import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.util.Log; 

/** 
* Created by root on 7/4/17. 
*/ 
public class Receiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     try { 

      boolean isVisible = MyApplication.isActivityVisible();// Check if 
      // activity 
      // is 
      // visible 
      // or not 
      Log.i("ActivityVisible ", "visible : " + isVisible); 

      // If it is visible then trigger the task else do nothing 
      if (isVisible == true) { 
       ConnectivityManager connectivityManager = (ConnectivityManager) context 
         .getSystemService(Context.CONNECTIVITY_SERVICE); 
       NetworkInfo networkInfo = connectivityManager 
         .getActiveNetworkInfo(); 

       // Check internet connection and accrding to state change the 
       // text of activity by calling method 
       if (networkInfo != null && networkInfo.isConnected()) { 

        new MainActivity().changeTextStatus(true); 
        Log.i("ActivityVisible ", "visible : " + isVisible); 
       } else { 
        new MainActivity().changeTextStatus(false); 
       } 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 


    } 
} 

MainActivity.Java

import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.content.IntentFilter; 
import android.graphics.Color; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.TextView; 

public class MainActivity extends AppCompatActivity { 
    private static TextView internetStatus; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     internetStatus = (TextView) findViewById(R.id.internet_status); 

     // At activity startup we manually check the internet status and change 
     // the text status 
     ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 
     NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo(); 
     if (networkInfo != null && networkInfo.isConnected()) { 
      changeTextStatus(true); 
     } else { 
      changeTextStatus(false); 
     } 
    } 
    // Method to change the text status 
    public void changeTextStatus(boolean isConnected) { 

     // Change status according to boolean value 
     if (isConnected) { 
      internetStatus.setText("Internet Connected."); 
      internetStatus.setTextColor(Color.parseColor("#00ff00")); 
     } else { 
      internetStatus.setText("Internet Disconnected."); 
      internetStatus.setTextColor(Color.parseColor("#ff0000")); 
     } 
    } 

    @Override 
    protected void onPause() { 

     super.onPause(); 
     MyApplication.activityPaused();// On Pause notify the Application 
    } 

    @Override 
    protected void onResume() { 

     super.onResume(); 
     MyApplication.activityResumed();// On Resume notify the Application 
    } 
}