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[Android][Framework]设置默认WiFi配置

点击Wifi热点配置选项,会弹出一个对话框,WifiApDialog.java。这个对话框会在onCreate的时候填入一些默认内容:

if (mWifiConfig != null) {
mSsid.setText(mWifiConfig.SSID);
if (mWifiConfig.apBand == 0) {
mBandIndex = 0;
} else {
mBandIndex = 1;
}

mSecurity.setSelection(mSecurityTypeIndex);
if (mSecurityTypeIndex == WPA2_INDEX) {
mPassword.setText(mWifiConfig.preSharedKey);
}
}

内容都是从mWifiConfig获取的,这个mWifiConfig是在构造的时候赋值:

// TetherSettings.java

private void initWifiTethering() {
final Activity activity = getActivity();
mWifiConfig = mWifiManager.getWifiApConfiguration(); // 这里获取的
mSecurityType = getResources().getStringArray(R.array.wifi_ap_security);

mCreateNetwork = findPreference(WIFI_AP_SSID_AND_SECURITY);

mRestartWifiApAfterConfigChange = false;

if (mWifiConfig == null) {
final String s = activity.getString(
com.android.internal.R.string.wifi_tether_configure_ssid_default);
mCreateNetwork.setSummary(String.format(activity.getString(CONFIG_SUBTEXT),
s, mSecurityType[WifiApDialog.OPEN_INDEX]));
} else {
int index = WifiApDialog.getSecurityTypeIndex(mWifiConfig);
mCreateNetwork.setSummary(String.format(activity.getString(CONFIG_SUBTEXT),
mWifiConfig.SSID,
mSecurityType[index]));
}
}

@Override
public Dialog onCreateDialog(int id) {
if (id == DIALOG_AP_SETTINGS) {
final Activity activity = getActivity();
mDialog = new WifiApDialog(activity, this, mWifiConfig);
return mDialog;
}
return null;
}

继续跟代码

// WifiServiceImpl.java
/**
* see {@link WifiManager#getWifiApConfiguration()}
* @return soft access point configuration
*/
public WifiConfiguration getWifiApConfiguration() {
enforceAccessPermission();
return mWifiStateMachine.syncGetWifiApConfiguration();
}
// WifiStateMachine.java
public WifiConfiguration syncGetWifiApConfiguration() {
return mWifiApConfigStore.getApConfiguration();
}
// WifiApConfigStore.java
/**
* Generate a default WPA2 based configuration with a random password.
* We are changing the Wifi Ap configuration storage from secure settings to a
* flat file accessible only by the system. A WPA2 based default configuration
* will keep the device secure after the update.
*/
private WifiConfiguration getDefaultApConfiguration() {
WifiConfiguration config = new WifiConfiguration();
config.SSID = mContext.getResources().getString(
R.string.wifi_tether_configure_ssid_default);
config.allowedKeyManagement.set(KeyMgmt.WPA2_PSK);
String randomUUID = UUID.randomUUID().toString();
//first 12 chars from xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
config.preSharedKey = randomUUID.substring(0, 8) + randomUUID.substring(9, 13);
return config;
}

所以,只需要在getDefaultApConfiguration配置默认的热点相关内容。

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