设置Android设备WIFI在休眠时永不断开的代码实现
MainActivity如下:
packagecc.ab; importandroid.os.Bundle; importandroid.provider.Settings; importandroid.app.Activity; /** *Demo描述: *设置设备在睡眠期间始终保持WLAN开启. * *参考资料: *1http://stackoverflow.com/questions/8652031/how-to-modify-wi-fi-sleep-policy-programmatically/8655070#8655070 *2http://blog.csdn.net/mrlixirong/article/details/24938637 *Thankyouverymuch * *注意事项: *1这里使用的是android.provider.Settings.System.WIFI_SLEEP_POLICY *而不是Settings.System.WIFI_SLEEP_POLICY!!!!!!!!!!!!!!!!!!!!!!! * *2权限<uses-permissionandroid:name="android.permission.WRITE_SETTINGS"/> * *3在实际项目中,这么强制性地设置WIFI在休眠时永不断开有些粗鲁了. *可以先记录下WIFI原本的策略,待我们的逻辑完成后再还原回去为好. */ publicclassMainActivityextendsActivity{ @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); setWifiNeverSleep(); } privatevoidsetWifiNeverSleep(){ intwifiSleepPolicy=0; wifiSleepPolicy=Settings.System.getInt(getContentResolver(), android.provider.Settings.System.WIFI_SLEEP_POLICY, Settings.System.WIFI_SLEEP_POLICY_DEFAULT); System.out.println("--->修改前的Wifi休眠策略值WIFI_SLEEP_POLICY="+wifiSleepPolicy); Settings.System.putInt(getContentResolver(), android.provider.Settings.System.WIFI_SLEEP_POLICY, Settings.System.WIFI_SLEEP_POLICY_NEVER); wifiSleepPolicy=Settings.System.getInt(getContentResolver(), android.provider.Settings.System.WIFI_SLEEP_POLICY, Settings.System.WIFI_SLEEP_POLICY_DEFAULT); System.out.println("--->修改后的Wifi休眠策略值WIFI_SLEEP_POLICY="+wifiSleepPolicy); } } <RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world"/> </RelativeLayout>
代码如上,不过在实际项目中,这么强制性地设置WIFI在休眠时永不断开有些粗鲁了.
可以先记录下WIFI原本的策略,待我们的逻辑完成后再还原回去为好.