我和我的朋友正在开发一个应用程序,该应用程序使用 wifi-direct 在 android 设备之间传输同步音乐。我们的问题是,虽然应用程序在连接手机后运行良好,但需要一些操作才能让手机连接,因为在所有 AOSP 设备上,似乎 wifi direct 仅在进入 wifi direct 菜单时才打开(并在退出时立即关闭)。这使得应用程序内的连接相当困难。我们想知道是否有任何方法可以直接从代码中打开 wifi 并保持打开状态(如果有人可以向我们推荐如何使用反射来做到这一点的详细描述,那就太好了)。
谢谢!这是我们当前的代码:
public class Reflector {
static Method turnOnICS;
static Method turnOnJB;
static Method turnOffICS;
public static void turnOnP2P(WifiP2pManager m, Channel c) {
//Log.v("button", "turnOnP2P");
if (android.os.Build.VERSION.SDK_INT == 14 || android.os.Build.VERSION.SDK_INT == 15) {
//Log.v("version", "Version is ICS");
try {
turnOnICS = WifiP2pManager.class.getDeclaredMethod("enableP2p",WifiP2pManager.Channel.class);
turnOnICS.setAccessible(true);
turnOnICS.invoke(m, c);
} catch (NoSuchMethodException e) {
Log.v("ics_error", "ICS enableP2p() not found");
} catch (Exception e) {
Log.v("ics_error", "turnOnICS invocation failure");
}
} else if (android.os.Build.VERSION.SDK_INT == 16 || android.os.Build.VERSION.SDK_INT == 17) {
//Log.v("version", "Version is JB");
try {
turnOnJB = NsdManager.class.getDeclaredMethod("setEnabled", boolean.class);
turnOnJB.setAccessible(true);
turnOnJB.invoke(NsdManager.class, true);
//must feed it an nsdmanager, but none exists in wifidirectactivity
Log.v("nsd", "problem");
} catch (NoSuchMethodException e) {
Log.v("jb_error", "JB setEnabled() not found");
} catch (Exception e) {
Log.v("jb_error", "turnOnJB invocation failure");
e.printStackTrace();
}
}
}
public static void turnOffP2P(WifiP2pManager m, Channel c) {
//Log.v("button", "turnOffP2P");
if (android.os.Build.VERSION.SDK_INT == 14 || android.os.Build.VERSION.SDK_INT == 15) {
//Log.v("version", "Version is ICS");
try {
turnOffICS = WifiP2pManager.class.getDeclaredMethod("disableP2p", WifiP2pManager.Channel.class);
turnOffICS.setAccessible(true);
turnOffICS.invoke(m, c);
} catch (NoSuchMethodException e) {
Log.v("ics_error", "ICS disableP2P() not found");
} catch (Exception e) {
Log.v("ics_error", "turnOffICS invocation failure");
}
}
}
public static void printAll(){
Method[] list = WifiP2pManager.class.getDeclaredMethods();
for(Method m : list){
Log.v("tag",m.getName());
}
}
}