以编程方式在android中启用/禁用数据连接

我想以编程方式启用/禁用数据连接。 我已经使用了下面的代码：

void enableInternet(boolean yes) { ConnectivityManager iMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE); Method iMthd = null; try { iMthd = ConnectivityManager.class.getDeclaredMethod("setMobileDataEnabled", boolean.class); } catch (Exception e) { } iMthd.setAccessible(false); if(yes) { try { iMthd.invoke(iMgr, true); Toast.makeText(getApplicationContext(), "Data connection Enabled", Toast.LENGTH_SHORT).show(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block dataButton.setChecked(false); Toast.makeText(getApplicationContext(), "IllegalArgumentException", Toast.LENGTH_SHORT).show(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block Toast.makeText(getApplicationContext(), "IllegalAccessException", Toast.LENGTH_SHORT).show(); e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block dataButton.setChecked(false); Toast.makeText(getApplicationContext(), "InvocationTargetException", Toast.LENGTH_SHORT).show(); } } else { try { iMthd.invoke(iMgr, true); Toast.makeText(getApplicationContext(), "Data connection Disabled", Toast.LENGTH_SHORT).show(); } catch (Exception e) { dataButton.setChecked(true); Toast.makeText(getApplicationContext(), "Error Disabling Data connection", Toast.LENGTH_SHORT).show(); } } } 

它在模拟器中没有任何错误，但是当我尝试在真实设备上运行时，出现“InvocationTargetException”。 我正在使用API​​级别8来构build应用程序。

Answer 1

此代码示例应该适用于运行姜饼和更高版本的Android手机：

 private void setMobileDataEnabled(Context context, boolean enabled) throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException { final ConnectivityManager conman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); final Class conmanClass = Class.forName(conman.getClass().getName()); final Field connectivityManagerField = conmanClass.getDeclaredField("mService"); connectivityManagerField.setAccessible(true); final Object connectivityManager = connectivityManagerField.get(conman); final Class connectivityManagerClass = Class.forName(connectivityManager.getClass().getName()); final Method setMobileDataEnabledMethod = connectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE); setMobileDataEnabledMethod.setAccessible(true); setMobileDataEnabledMethod.invoke(connectivityManager, enabled); } 

不要忘记添加这行到你的清单文件

 <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/> 

Answer 2

@riHaN JiTHiN你的程序对于2.3及以上的版本可以正常工作，但是在'else'语句中需要做一些小改动：

 else { try { iMthd.invoke(iMgr, true); 

“真”应改为“假”

 iMthd.invoke(iMgr, false);