我正在尝试制作的Android应用程序的日志中出现错误。我已经发布了下面的日志和它对应的java类。
我认为这是我的清单中的权限问题，我已经使用我认为正确的权利进行了修改。
请有人可以告诉我我做错了什么。
由于
package com.example.hotornot.WifiUtils;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.util.ArrayList;
import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.util.Log;
public class WifiApManager {
private final WifiManager mWifiManager;
public WifiApManager(Context context) {
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
}
/**
* Start AccessPoint mode with the specified
* configuration. If the radio is already running in
* AP mode, update the new configuration
* Note that starting in access point mode disables station
* mode operation
* @param wifiConfig SSID, security and channel details as part of WifiConfiguration
* @return {@code true} if the operation succeeds, {@code false} otherwise
*/
public boolean setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {
try {
if (enabled) { // disable WiFi in any case
mWifiManager.setWifiEnabled(false);
}
Method method = mWifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
return (Boolean) method.invoke(mWifiManager, wifiConfig, enabled);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return false;
}
}
/**
* Gets the Wi-Fi enabled state.
* @return {@link WIFI_AP_STATE}
* @see #isWifiApEnabled()
*/
public WIFI_AP_STATE getWifiApState() {
try {
Method method = mWifiManager.getClass().getMethod("getWifiApState");
int tmp = ((Integer)method.invoke(mWifiManager));
// Fix for Android 4
if (tmp > 10) {
tmp = tmp - 10;
}
return WIFI_AP_STATE.class.getEnumConstants()[tmp];
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return WIFI_AP_STATE.WIFI_AP_STATE_FAILED;
}
}
/**
* Return whether Wi-Fi AP is enabled or disabled.
* @return {@code true} if Wi-Fi AP is enabled
* @see #getWifiApState()
*
* @hide Dont open yet
*/
public boolean isWifiApEnabled() {
return getWifiApState() == WIFI_AP_STATE.WIFI_AP_STATE_ENABLED;
}
/**
* Gets the Wi-Fi AP Configuration.
* @return AP details in {@link WifiConfiguration}
*/
public WifiConfiguration getWifiApConfiguration() {
try {
Method method = mWifiManager.getClass().getMethod("getWifiApConfiguration");
return (WifiConfiguration) method.invoke(mWifiManager);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return null;
}
}
/**
* Sets the Wi-Fi AP Configuration.
* @return {@code true} if the operation succeeded, {@code false} otherwise
*/
public boolean setWifiApConfiguration(WifiConfiguration wifiConfig) {
try {
Method method = mWifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);
return (Boolean) method.invoke(mWifiManager, wifiConfig);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return false;
}
}
/**
* Gets a list of the clients connected to the Hotspot, reachable timeout is 300
* @param onlyReachables {@code false} if the list should contain unreachable (probably disconnected) clients, {@code true} otherwise
* @return ArrayList of {@link ClientScanResult}
*/
public ArrayList<ClientScanResult> getClientList(boolean onlyReachables) {
return getClientList(onlyReachables, 300);
}
/**
* Gets a list of the clients connected to the Hotspot
* @param onlyReachables {@code false} if the list should contain unreachable (probably disconnected) clients, {@code true} otherwise
* @param reachableTimeout Reachable Timout in miliseconds
* @return ArrayList of {@link ClientScanResult}
*/
public ArrayList<ClientScanResult> getClientList(boolean onlyReachables, int reachableTimeout) {
BufferedReader br = null;
ArrayList<ClientScanResult> result = null;
try {
result = new ArrayList<ClientScanResult>();
br = new BufferedReader(new FileReader("/proc/net/arp"));
String line;
while ((line = br.readLine()) != null) {
String[] splitted = line.split(" +");
if ((splitted != null) && (splitted.length >= 4)) {
// Basic sanity check
String mac = splitted[3];
if (mac.matches("..:..:..:..:..:..")) {
boolean isReachable = InetAddress.getByName(splitted[0]).isReachable(reachableTimeout);
if (!onlyReachables || isReachable) {
result.add(new ClientScanResult(splitted[0], splitted[3], splitted[5], isReachable));
}
}
}
}
} catch (Exception e) {
Log.e(this.getClass().toString(), e.getMessage());
} finally {
try {
br.close();
} catch (IOException e) {
Log.e(this.getClass().toString(), e.getMessage());
}
}
return result;
}
}
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.hotornot.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
> 12-14 22:22:38.405: E/Trace(777): error opening trace file: No such
> file or directory (2) 12-14 22:22:38.804: E/class
> com.example.hotornot.WifiUtils.WifiApManager(777): socket failed:
> EACCES (Permission denied) 12-14 22:22:38.955: D/libEGL(777): loaded
> /system/lib/egl/libEGL_emulation.so 12-14 22:22:38.985: D/(777):
> HostConnection::get() New Host Connection established 0x2a1479b0, tid
> 777 12-14 22:22:38.995: D/libEGL(777): loaded
> /system/lib/egl/libGLESv1_CM_emulation.so 12-14 22:22:38.995:
> D/libEGL(777): loaded /system/lib/egl/libGLESv2_emulation.so 12-14
> 22:22:39.065: W/EGL_emulation(777): eglSurfaceAttrib not implemented
> 12-14 22:22:39.075: D/OpenGLRenderer(777): Enabling debug mode 0
答案 0 :(得分：1)
在清单中添加它可能会对其进行排序
<uses-permission android:name="android.permission.INTERNET"/>