android 在程序中开启GPS功能

1.	 LocationManager locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);        
2.	          
3.	        boolean isEnabled= locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);   
4.	        if(!isEnabled){   
5.	            //这段代码可以实现GPS开关状态的切换    
6.	                Intent GPSIntent = new Intent();   
7.	                GPSIntent.setClassName("com.android.settings",   
8.	                        "com.android.settings.widget.SettingsAppWidgetProvider");   
9.	                GPSIntent.addCategory("android.intent.category.ALTERNATIVE");   
10.	                GPSIntent.setData(Uri.parse("custom:3"));   
11.	                try {   
12.	                    PendingIntent.getBroadcast(MainActivity.this, 0, GPSIntent, 0).send();   
13.	                } catch (CanceledException e) {   
14.	                    e.printStackTrace();   
15.	                }       
16.	//              Settings.Secure.setLocationProviderEnabled(getContentResolver(), LocationManager.GPS_PROVIDER, true);   
 
注释掉的代码,表面上看可以简单的实现开启GPS功能,但是运行后发现后没有权限,即使加了权限依旧提示permission denied  
PS：权限都有已经有说明的 
<uses-permission android:name="android.permission.WRITE_SETTINGS" ></uses-permission> 
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" ></uses-permission> 
Android 在程序中开启网络功能 
	/**    
	 * 移动网络开关    
	 */    
    public Object invokeBooleanArgMethod(String methodName, 
               boolean value) throws Exception { 
    	   mConnectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 
           Class ownerClass = mConnectivityManager.getClass(); 
           Class[]  argsClass = new Class[1]; 
               argsClass[0] = boolean.class; 
           Method method = ownerClass.getMethod(methodName,argsClass); 
           return method.invoke(mConnectivityManager, value); 
       } 
    //判断移动网络 
    public boolean isNetworkConnected(Context context) {   
    	      if (context != null) {   
    	          ConnectivityManager mConnectivityManager = (ConnectivityManager) context   
    	                  .getSystemService(Context.CONNECTIVITY_SERVICE);   
    	          NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();   
    	          if (mNetworkInfo != null) {   
    	             return mNetworkInfo.isAvailable();   
    	          }   
    	     }   
    	     return false; 
    }