首先弄懂怎么设置adb wifi无线调试的功能，如下所示。
1. 手机端开启adb tcp连接端口
:/$setprop service.adb.tcp.port 5555
:/$stop adbd
:/$start adbd
其中setprop是用来设置系统属性的，这里不需要root权限，su即可。可通过adb shell设置，亦可通过手机上安装的Android terminal设置。
2. 电脑端的设置和使用
连接adb，其中phone_ipaddress和portnumber是指手机的ip和前面设置的监听端口号（如5555）
adb connect phone_ipaddress:portnumber
直接adb shell或adb -s 设备shell连接设备
如若要断开则如下：
adb disconnect phone_ipaddress:port
但是每次这样的去设置很繁琐，所以直接在设置中做一个开关就把手机端的设置做好，如下所示：
一、打开开关，并连接Wifi
二、打开开关，没有连接Wifi
三、未打开开关
这样就可以直接进行adb wifi调试了，手机端就不用每次都先用USB调试去设置修改的属性，才能激活adb wifi调试。
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下面来具体说说实现的思路：
第一步：在【设置】-->【开发者选项】中做一个类似于【USB调试】的开关【Wifi调试】
第二步：【Wifi调试】开关打开就激活监听5555端口，用来进行adb wifi调试，【Wifi调试】开关关闭就不监听5555端口，这样就不能进行adb wifi调试
第三步：在第二步中打开关闭【Wifi调试】开关的时候，调用相应的接口进行设置
第四步：将第三步中要调用的接口写好
1、先在布局中加入该开关
首先找到布局文件，packages/apps/Settings/res/xml/development_prefs.xml，找到【USB调试】开关的相应代码，然后再里面加一个【Wifi调试】开关，代码如下：
<SwitchPreference
android:key="enable_adb"
android:title="@string/enable_adb"
android:summary="@string/enable_adb_summary"/> <!-- added by ouyang start -->
<SwitchPreference
android:key="enable_wifi_adb"
android:title="@string/enable_wifi_adb"
android:summary="@string/enable_wifi_adb_summary"/>
<!-- added by ouyang end -->
上面代码中，第一个代码是【USB调试】开关的代码，第二个是我加的【Wifi调试】开关的代码，然后为什么的字符串做相应的国际化操作，代码如下：
packages/apps/Settings/res/values-zh-rCN/strings.xml 中加入：
<!-- added by ouyang start 2015-12-17 -->
<string name="enable_wifi_adb">Wifi调试</string>
<string name="enable_wifi_adb_openwifi">Wifi没连接，请连接wifi</string>
<string name="enable_wifi_adb_summary">连接Wifi后启用调试模式</string>
<string name="enable_wifi_adb_connected_summary">Wifi调试已打开,在电脑端你可以输入以下命令进行调试:\n
adb connect <xliff:g id="ip_address">%1$s</xliff:g>:5555</string>
<!-- added by ouyang end 2015-12-17 -->
packages/apps/Settings/res/values/strings.xml 中加入：
<!-- added by ouyang start 2015-12-17 -->
<string name="enable_wifi_adb">Wifi debugging</string>
<string name="enable_wifi_adb_openwifi">Wifi is not connected,please turn wifi on and connect it</string>
<string name="enable_wifi_adb_summary">Debug mode when Wifi is connected</string>
<string name="enable_wifi_adb_connected_summary">adb wifi is on,from your computer run:\n
adb connect <xliff:g id="ip_address">%1$s</xliff:g>:5555</string>
<!-- added by ouyang end 2015-12-17 -->
2、在packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java文件中，对刚才加入的【Wifi调试】开关进行相关的逻辑处理。
首先先定义开关的几个变量，如下：
//add by ouyang 2015-12-17 start
private static final String ENABLE_WIFI_ADB = "enable_wifi_adb";
private static final String ADB_WIFI_ENABLED_KEY = "ADB_WIFI_ENABLED";
private static SwitchPreference mEnableWifiAdb;
//add by ouyang 2015-12-17 end
然后再onCreate()方法中初始化【Wifi调试】开关，如下：
mEnableAdb = findAndInitSwitchPref(ENABLE_ADB);
//add by ouyang 2015-12-17
mEnableWifiAdb = findAndInitSwitchPref(ENABLE_WIFI_ADB);
然后在onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference)方法中对【Wifi调试】开关的打开和关闭操作做逻辑处理。
if (preference == mEnableAdb) {
if (mEnableAdb.isChecked()) {
mDialogClicked = false;
if (mAdbDialog != null) dismissDialogs();
mAdbDialog = new AlertDialog.Builder(getActivity()).setMessage(
getActivity().getResources().getString(R.string.adb_warning_message))
.setTitle(R.string.adb_warning_title)
.setPositiveButton(android.R.string.yes, this)
.setNegativeButton(android.R.string.no, this)
.show();
mAdbDialog.setOnDismissListener(this);
} else {
Settings.Global.putInt(getActivity().getContentResolver(),
Settings.Global.ADB_ENABLED, 0);
mVerifyAppsOverUsb.setEnabled(false);
mVerifyAppsOverUsb.setChecked(false);
/// M: ALPS01256802, The "Developer options" status is opened.
onPreferenceTreeClick(null, mVerifyAppsOverUsb);
updateBugreportOptions();
}
}
//add by ouyang 2015-12-17 start
else if (preference == mEnableWifiAdb) {
if (mEnableWifiAdb.isChecked()) {
Settings.Global.putInt(getActivity().getContentResolver(),ADB_WIFI_ENABLED_KEY, 1);
android.os.SystemProperties.set("sys.connect.adb.wifi","1");
WifiManager wifiManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
String ipAddressString = (ipAddress & 0xFF ) + "." +((ipAddress >> 8 ) & 0xFF) + "." +
((ipAddress >> 16 ) & 0xFF) + "." +( ipAddress >> 24 & 0xFF) ;
Log.i(TAG, "ipAddress="+ipAddress);
Log.i(TAG, "ipAddressString="+ipAddressString);
if ("0.0.0.0".equals(ipAddressString)) {
mEnableWifiAdb.setSummary(getResources().getString(R.string.enable_wifi_adb_openwifi));
}else{
mEnableWifiAdb.setSummary(getResources().
getString(R.string.enable_wifi_adb_connected_summary,ipAddressString));
}
} else {
Settings.Global.putInt(getActivity().getContentResolver(),ADB_WIFI_ENABLED_KEY, 0);
android.os.SystemProperties.set("sys.connect.adb.wifi","0");
mEnableWifiAdb.setSummary(getResources().getString(R.string.enable_wifi_adb_summary));
}
}
//add by ouyang 2015-12-17 end
上面的代码主要是，
当【Wifi调试】开关打开的时候，保存一个原来表示该【Wifi调试】开关打开关闭的状态的值为1，然后调用接口android.os.SystemProperties.set("sys.connect.adb.wifi","1");如果wifi这个时候打开就显示相应的adb wifi命令，如ip地址为192.168.107.201的时候就显示，"Wifi调试已打开,在电脑端你可以输入以下命令进行调试:adb connect 192.168.107.201:5555"；如果wifi为打开，就提示“Wifi没连接，请连接wifi”
当【Wifi调试】开关关闭的时候，保存一个原来表示该【Wifi调试】开关打开关闭的状态的值为0，然后调用接口android.os.SystemProperties.set("sys.connect.adb.wifi","0");
ADB_WIFI_ENABLED_KEY这个状态值，在进入该Activity的时候，如果上次打开了【Wifi调试】开关，那么下次进来的时候就要显示【Wifi调试】开关是打开状态，否则是关闭状态。下面说说ADB_WIFI_ENABLED_KEY这个状态值的相关代码，如下：
在onResume()方法中，加入下面代码：
//add by ouyang 2015-12-17 start
IntentFilter filter = new IntentFilter();
filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getActivity().registerReceiver(wifiBroadcastReceiver, filter); boolean isAdbWifiChecked = Settings.Global.getInt(getActivity().getContentResolver(),ADB_WIFI_ENABLED_KEY, 0) != 0;
mEnableWifiAdb.setChecked(isAdbWifiChecked);
Log.i(TAG, "isAdbWifiChecked:" + isAdbWifiChecked);
//add by ouyang 2015-12-17 end
代码的意思是，进入该Activity就动态的注册一个广播，用来监听Wifi的状态改变的，然后来动态的显示Android手机获取的IP地址。然后根据ADB_WIFI_ENABLED_KEY这个状态值来显示【Wifi调试】开关的打开关闭状态。
在updateAllOptions()方法中，也要去做下处理，代码如下：
/// M: CR ALPS00244115. Lock and unlock screen, the "USB debugging" is unchecked.
boolean isChecked = (mAdbDialog != null && mAdbDialog.isShowing()) ? true :
(Settings.Global.getInt(cr, Settings.Global.ADB_ENABLED, 0) != 0);
updateSwitchPreference(mEnableAdb, isChecked); //add by ouyang 2015-12-17 start
boolean isAdbWifiChecked = Settings.Global.getInt(cr,ADB_WIFI_ENABLED_KEY, 0) != 0;
updateSwitchPreference(mEnableWifiAdb, isAdbWifiChecked);
//add by ouyang 2015-12-17 end /// M: update usb preference again
mExt.customUSBPreference(mEnableAdb);
//add by ouyang 2015-12-17
mExt.customUSBPreference(mEnableWifiAdb);
下面来说说上面动态注册的广播，代码如下：
BroadcastReceiver wifiBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String TAG = "wifiBroadcastReceiver";
boolean isAdbWifiChecked = mEnableWifiAdb.isChecked();
ConnectivityManager connectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo net = connectivityManager.getActiveNetworkInfo();
if (net == null) {
Log.i(TAG, "No net type");
if (isAdbWifiChecked) {
mEnableWifiAdb.setSummary(getResources()
.getString(R.string.enable_wifi_adb_openwifi));
}
} else {
Log.i(TAG, "Net Type:" + net.getTypeName());
}
State wifi = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
if (wifi == State.CONNECTED || wifi == State.CONNECTING) {
Log.i(TAG, "wifi connected");
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
String ipAddressString = (ipAddress & 0xFF) + "." + ((ipAddress >> 8) & 0xFF) + "."
+ ((ipAddress >> 16) & 0xFF) + "." + (ipAddress >> 24 & 0xFF);
if (isAdbWifiChecked) {
mEnableWifiAdb.setSummary(
getResources().getString(
R.string.enable_wifi_adb_connected_summary, ipAddressString));
}
Log.i(TAG, getResources().getString(
R.string.enable_wifi_adb_connected_summary, ipAddressString));
} else if (wifi == State.DISCONNECTED || wifi == State.DISCONNECTING) {
Log.i(TAG, "wifi disconnected");
if (isAdbWifiChecked) {
mEnableWifiAdb.setSummary(
getResources().getString(R.string.enable_wifi_adb_openwifi));
}
Log.i(TAG, getResources().getString(
R.string.enable_wifi_adb_connected_summary));
}
}
};
上面的代码主要是当【Wifi调试】开关打开的时候，来用动态表示Android手机的Wifi连接状态，如果wifi未连接，就提示“Wifi没连接，请连接wifi”，如果Wifi连接了，就动态的将从DHCP服务器获取的IP地址显示出来，如ip地址为192.168.107.201的时候就显示，"Wifi调试已打开,在电脑端你可以输入以下命令进行调试:adb connect 192.168.107.201:5555"
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好吧，在packages/apps/Settings/，即Settings APP层面的代码写完了，下面来说说调用的两个接口怎么实现。
android.os.SystemProperties.set("sys.connect.adb.wifi", "1");
android.os.SystemProperties.set("sys.connect.adb.wifi", "0");
首先找到frameworks/base/core/java/android/os/SystemProperties.java文件，找到set(String key, String val)方法，代码如下，发现调用了native_set(key, val)方法。
/**
* Set the value for the given key.
* @throws IllegalArgumentException if the key exceeds 32 characters
* @throws IllegalArgumentException if the value exceeds 92 characters
*/
public static void set(String key, String val) {
if (key.length() > PROP_NAME_MAX) {
throw new IllegalArgumentException("key.length > " + PROP_NAME_MAX);
}
if (val != null && val.length() > PROP_VALUE_MAX) {
throw new IllegalArgumentException("val.length > " +
PROP_VALUE_MAX);
}
native_set(key, val);
}
native_set(key, val)方法定义如下：
private static native void native_set(String key, String def);
该接口类在初始化运行环境中注册对应的cpp接口android_os_SystemProperties.cpp，实际操作通过JNI调用的是cpp文件对应的接口：
frameworks/base/core/jni/AndroidRuntime.cpp
namespace android {
extern int register_android_os_SystemProperties(JNIEnv *env);
}
frameworks/base/core/jni/android_os_SystemProperties.cpp
static void SystemProperties_set(JNIEnv *env, jobject clazz,
jstring keyJ, jstring valJ)
{
int err;
const char* key;
const char* val; if (keyJ == NULL) {
jniThrowNullPointerException(env, "key must not be null.");
return ;
}
key = env->GetStringUTFChars(keyJ, NULL); if (valJ == NULL) {
val = ""; /* NULL pointer not allowed here */
} else {
val = env->GetStringUTFChars(valJ, NULL);
} err = property_set(key, val); env->ReleaseStringUTFChars(keyJ, key); if (valJ != NULL) {
env->ReleaseStringUTFChars(valJ, val);
} if (err < 0) {
ALOGE("setproperty key=%s value=%s err=%d\n", key, val, err);
jniThrowException(env, "java/lang/RuntimeException",
"failed to set system property");
}
}
好了，关于该android.os.SystemProperties.set()方法的分析，可以参考
http://blog.****.net/ameyume/article/details/8056492
http://www.blogjava.net/anymobile/articles/301989.html
下面直接写下面两个接口的实现
android.os.SystemProperties.set("sys.connect.adb.wifi", "1");
android.os.SystemProperties.set("sys.connect.adb.wifi", "0");
在device/lentek/lentk6735_66t_l1/E580/init.rc文件中加入下面的代码，其中E580是项目的名称。
#added by ouyang start connect adb with wifi
on property:sys.connect.adb.wifi=1
setprop service.adb.tcp.port 5555
stop adbd
start adbd
on property:sys.connect.adb.wifi=0
setprop service.adb.tcp.port ""
stop adbd
start adbd
#added by ouyang end connect adb with wifi
上面代码就是当调用
android.os.SystemProperties.set("sys.connect.adb.wifi", "1");和sys.connect.adb.wifiandroid.os.SystemProperties.set("sys.connect.adb.wifi", "0");接口的时候的具体实现，
即"sys.connect.adb.wifi"属性设置为1的时候，监听5555端口，
"sys.connect.adb.wifi"属性设置为0的时候，不监听任何端口
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好了，下面来再一次测一测该功能怎么样，重新打开wifi,重新打开【Wifi调试】开关，显示如下：
可以看出来，此时Android手机的IP地址是192.168.107.168，因此下面在PC端测试看是否可以用adb wifi无线调试，使用命令adb connect 192.168.107.168连接,adb disconnect 192.168.107.168断开连接，如下图所示：
C:\Documents and Settings\Administrator>adb connect 192.168.107.168
connected to 192.168.107.168:5555 C:\Documents and Settings\Administrator>adb shell
shell@lentk6735_66t_l1:/ $ ll
drwxr-xr-x root root 2015-12-21 10:15 acct
drwxrwx--- system cache 2015-12-17 19:01 cache
lrwxrwxrwx root root 1970-01-01 08:00 charger -> /sbin/healthd
dr-x------ root root 2015-12-21 10:15 config
drwxr-xr-x root root 2015-12-21 10:15 custom
lrwxrwxrwx root root 2015-12-21 10:15 d -> /sys/kernel/debug
drwxrwx--x system system 2015-12-21 10:16 data
-rw-r--r-- root root 385 1970-01-01 08:00 default.prop
drwxr-xr-x root root 2015-12-21 10:15 dev
-rw-r--r-- root root 127 1970-01-01 08:00 enableswap.sh
lrwxrwxrwx root root 2015-12-21 10:15 etc -> /system/etc
-rw-r--r-- root root 1851 1970-01-01 08:00 factory_init.project.rc
-rw-r--r-- root root 18861 1970-01-01 08:00 factory_init.rc
-rw-r--r-- root root 31413 1970-01-01 08:00 file_contexts
-rw-r----- root root 1980 1970-01-01 08:00 fstab.mt6735
-rwxr-x--- root root 543928 1970-01-01 08:00 init
-rwxr-x--- root root 605 1970-01-01 08:00 init.aee.rc
-rwxr-x--- root root 2065 1970-01-01 08:00 init.c2k.rc
-rwxr-x--- root root 1071 1970-01-01 08:00 init.environ.rc
-rwxr-x--- root root 3548 1970-01-01 08:00 init.modem.rc
-rwxr-x--- root root 45152 1970-01-01 08:00 init.mt6735.rc
-rwxr-x--- root root 32013 1970-01-01 08:00 init.mt6735.usb.rc
-rwxr-x--- root root 963 1970-01-01 08:00 init.no_ssd.rc
-rwxr-x--- root root 4411 1970-01-01 08:00 init.project.rc
-rwxr-x--- root root 22787 1970-01-01 08:00 init.rc
-rwxr-x--- root root 972 1970-01-01 08:00 init.recovery.mt6735.rc
-rwxr-x--- root root 2288 1970-01-01 08:00 init.trace.rc
-rwxr-x--- root root 3885 1970-01-01 08:00 init.usb.rc
-rwxr-x--- root root 583 1970-01-01 08:00 init.xlog.rc
-rwxr-x--- root root 301 1970-01-01 08:00 init.zygote32.rc
-rwxr-x--- root root 531 1970-01-01 08:00 init.zygote64_32.rc
-rw-r--r-- root root 1004 1970-01-01 08:00 meta_init.c2k.rc
-rw-r--r-- root root 1062 1970-01-01 08:00 meta_init.modem.rc
-rw-r--r-- root root 1655 1970-01-01 08:00 meta_init.project.rc
-rw-r--r-- root root 14464 1970-01-01 08:00 meta_init.rc
drwxrwxr-x root system 2015-12-21 10:15 mnt
drwxrws--- root system 2015-12-17 18:59 nvdata
drwxrwx--x system system 2015-12-21 10:15 persist
dr-xr-xr-x root root 1970-01-01 08:00 proc
-rw-r--r-- root root 9326 1970-01-01 08:00 property_contexts
drwxrwx--- system system 2015-12-17 18:59 protect_f
drwxrwx--- system system 2015-12-17 18:59 protect_s
drwx------ root root 2015-12-05 18:05 root
drwxr-x--- root root 1970-01-01 08:00 sbin
lrwxrwxrwx root root 2015-12-21 10:15 sdcard -> /storage/sdcard0
-rw-r--r-- root root 471 1970-01-01 08:00 seapp_contexts
-rw-r--r-- root root 80 1970-01-01 08:00 selinux_version
-rw-r--r-- root root 258377 1970-01-01 08:00 sepolicy
-rw-r--r-- root root 11419 1970-01-01 08:00 service_contexts
drwxr-x--x root sdcard_r 2015-12-21 10:15 storage
dr-xr-xr-x root root 2015-12-21 10:15 sys
drwxr-xr-x root root 1970-01-01 08:00 system
-rw-r--r-- root root 8642 1970-01-01 08:00 ueventd.rc
lrwxrwxrwx root root 2015-12-21 10:15 vendor -> /system/vendor
shell@lentk6735_66t_l1:/ $ exit C:\Documents and Settings\Administrator>adb disconnect 192.168.107.168
发现可以正常的进行adb wifi 无线调试了。将【Wifi调试】开关【Wifi调试】开关关闭，再去连接的话，就会无法连接了。如下所示：
C:\Documents and Settings\Administrator>adb connect 192.168.107.168
unable to connect to 192.168.107.168:5555 C:\Documents and Settings\Administrator>
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作者：欧阳鹏 欢迎转载，与人分享是进步的源泉！
转载请保留原文地址：http://blog.****.net/ouyang_peng
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