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工作日常.md

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工作日常

1. 在系统应用Launch中，关于一些页面定制的修改。

img1
img2

修改，hotseatIcon（应用）大小，主页面边距，主页面默认图标，默认控件，应用页面数量、图标大小等。

com.android.launcher3.InvariantDeviceProfile
//文件地址

    InvariantDeviceProfile(String n, float w, float h, int r, int c, int fr, int fc, int maapc,
        float is, float its, float hs, float his, int dlId) {
    // Ensure that we have an odd number of hotseat items (since we need to place all apps)
    if (hs % 2 == 0) {
        throw new RuntimeException("All Device Profiles must have an odd number of hotseat spaces");
    }

    name = n;//参数配置名
    minWidthDps = w;
    minHeightDps = h;//影响主页和应用页图标(icon)大小，有可能是图标之间的间距，没具体测试过
    numRows = r; //主页可用行数，1就是只能一行。图一这样
    numColumns = c;//主页可用列数，一行可显示的图标
    numFolderRows = fr;
    numFolderColumns = fc;//文件夹可显示的行列数，将两个图标拖到一起就会合并成一个文件夹。
    minAllAppsPredictionColumns = maapc;//所有应用程序中预测的最小应用程序数量。(实际上我不知道用来干嘛的)
    iconSize = is;
    iconTextSize = its;//影响主页和应用页图标大小和字体大小
    numHotseatIcons = hs;//收藏栏可用数量，就是在主页固定的icon，显示在应用icon两边。
    hotseatIconSize = his;//应用图标大小。
    defaultLayoutId = dlId;//默认主页显示图标，在xml中定义，具体见下

    if(Build.ID.startsWith("ADP002A_KANGHAI")){
        hotseatIconSize = 60;
        numHotseatIcons = 1;
        numRows = 1;
        numColumns = 9;
        numFolderRows = 1;
        numFolderColumns = 2;
        defaultLayoutId = R.xml.default_workspace_kanghai;
    }
}

​

这些参数本来应该在如下中修改的，但是因为我不知道具体会引用哪一个，所以我统一修改了。

ArrayList<InvariantDeviceProfile> getPredefinedDeviceProfiles() {
    ArrayList<InvariantDeviceProfile> predefinedDeviceProfiles = new ArrayList<>();
    // width, height, #rows, #columns, #folder rows, #folder columns,
    // iconSize, iconTextSize, #hotseat, #hotseatIconSize, defaultLayoutId.
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Super Short Stubby",
            255, 300,     2, 3, 2, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Shorter Stubby",
            255, 400,     3, 3, 3, 3, 3, 48, 13, 3, 48, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Short Stubby",
            275, 420,     3, 4, 3, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Stubby",
            255, 450,     3, 4, 3, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus S",
            296, 491.33f, 4, 4, 4, 4, 4, 48, 13, 5, 48, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 4",
            335, 567,     4, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 5",
            359, 567,     4, 4, 4, 4, 4, DEFAULT_ICON_SIZE_DP, 13, 5, 56, R.xml.default_workspace_4x4));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Large Phone",
            406, 694,     5, 5, 4, 4, 4, 64, 14.4f,  5, 56, R.xml.default_workspace_5x5));
    // The tablet profile is odd in that the landscape orientation
    // also includes the nav bar on the side
    int forceLand = Integer.valueOf(SystemPropertiesUtil.getString("mstar.forcelandscape", "0"));
    Log.e("", "forceLand=" + forceLand + ",orientation=" + orientation);
    if (orientation == Configuration.ORIENTATION_PORTRAIT || forceLand == 2) {
        predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 7",
                575, 904,     5, 6, 4, 5, 4, 66, 18,  7, 66, R.xml.default_workspace_5x6_p));
    }else{
        predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 7",
                575, 904,     1, 6, 4, 5, 4, 66, 20,  7, 66, R.xml.default_workspace_5x6));
    }
    // Larger tablet profiles always have system bars on the top & bottom
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("Nexus 10",
            727, 1207,    5, 6, 4, 5, 4, 76, 14.4f,  7, 64, R.xml.default_workspace_5x6));
    predefinedDeviceProfiles.add(new InvariantDeviceProfile("20-inch Tablet",
            1527, 2527,   7, 7, 6, 6, 4, 100, 20,  7, 72, R.xml.default_workspace_4x4));
    return predefinedDeviceProfiles;
}

默认主页设置样例。

 <favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3">
    <!-- Far-left screen [0] -->

    <!-- Left screen [1] -->
    <appwidget
        launcher:packageName="com.android.settings"
        launcher:className="com.android.settings.widget.SettingsAppWidgetProvider"
        launcher:screen="1"
        launcher:x="0"
        launcher:y="3"
        launcher:spanX="4"
        launcher:spanY="1" />

    <!-- Middle screen [2] -->
    <appwidget
        launcher:packageName="com.android.deskclock"
        launcher:className="com.android.alarmclock.AnalogAppWidgetProvider"
        launcher:screen="2"
        launcher:x="1"
        launcher:y="0"
        launcher:spanX="2"
        launcher:spanY="2" />
    <favorite
        launcher:packageName="com.android.camera"
        launcher:className="com.android.camera.Camera"
        launcher:screen="2"
        launcher:x="0"
        launcher:y="3" />

    <!-- Right screen [3] -->
    <favorite
        launcher:packageName="com.android.gallery3d"
        launcher:className="com.android.gallery3d.app.Gallery"
        launcher:screen="3"
        launcher:x="1"
        launcher:y="3" />
    <favorite
        launcher:packageName="com.android.settings"
        launcher:className="com.android.settings.Settings"
        launcher:screen="3"
        launcher:x="2"
        launcher:y="3" />

    <!-- Far-right screen [4] -->

    <!-- Hotseat (We use the screen as the position of the item in the hotseat) -->
    <!-- Dialer, Contacts, [All Apps], Messaging, Browser -->
    <resolve
        launcher:container="-101"
        launcher:screen="0"
        launcher:x="0"
        launcher:y="0" >
        <favorite launcher:uri="#Intent;action=android.intent.action.DIAL;end" />
        <favorite launcher:uri="tel:123" />
        <favorite launcher:uri="#Intent;action=android.intent.action.CALL_BUTTON;end" />

        <favorite
            launcher:packageName="com.android.dialer"
            launcher:className="com.android.dialer.DialtactsActivity" />
    </resolve>

    <favorite
        launcher:packageName="com.android.contacts"
        launcher:className="com.android.contacts.activities.PeopleActivity"
        launcher:container="-101"
        launcher:screen="1"
        launcher:x="1"
        launcher:y="0" />

    <resolve
        launcher:container="-101"
        launcher:screen="3"
        launcher:x="3"
        launcher:y="0" >
        <favorite
            launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MESSAGING;end" />
        <favorite launcher:uri="sms:" />
        <favorite launcher:uri="smsto:" />
        <favorite launcher:uri="mms:" />
        <favorite launcher:uri="mmsto:" />

        <favorite
            launcher:packageName="com.android.mms"
            launcher:className="com.android.mms.ui.ConversationList" />
    </resolve>
    <resolve
        launcher:container="-101"
        launcher:screen="4"
        launcher:x="4"
        launcher:y="0" >
        <favorite
            launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_BROWSER;end" />
        <favorite launcher:uri="http://www.example.com/" />

        <favorite
            launcher:packageName="com.android.browser"
            launcher:className="com.android.browser.BrowserActivity" />
    </resolve>

</favorites>

设置工作区间大小。

 com.android.launcher3.DeviceProfile

    /** Returns the search bar bounds in the current orientation */
public Rect getSearchBarBounds(boolean isLayoutRtl) {
    Rect bounds = new Rect();
    if (isLandscape && transposeLayoutWithOrientation) {
        if (isLayoutRtl) {
            bounds.set(availableWidthPx - searchBarSpaceHeightPx, edgeMarginPx,
                    availableWidthPx, availableHeightPx - edgeMarginPx);
        } else {
            bounds.set(0, edgeMarginPx, searchBarSpaceHeightPx,
                    availableHeightPx - edgeMarginPx);
        }
    } else {
        if (isTablet) {
            // Pad the left and right of the workspace to ensure consistent spacing
            // between all icons
            int width = getCurrentWidth();
            // XXX: If the icon size changes across orientations, we will have to take
            //      that into account here too.
            int gap = (int) ((width - 2 * edgeMarginPx -
                    (inv.numColumns * cellWidthPx)) / (2 * (inv.numColumns + 1)));
            bounds.set(edgeMarginPx + gap, getSearchBarTopOffset(),
                    availableWidthPx - (edgeMarginPx + gap),
                    searchBarSpaceHeightPx);
        } else {
            bounds.set(desiredWorkspaceLeftRightMarginPx - defaultWidgetPadding.left,
                    getSearchBarTopOffset(),
                    availableWidthPx - (desiredWorkspaceLeftRightMarginPx -
                    defaultWidgetPadding.right), searchBarSpaceHeightPx);
        }
    }
    return bounds;//返回的这个区间就是大小了，上左右下，具体演算我没去看，直接自己设置固定值。
}

2. 设置了OVERSCAN top参数之后，工作、应用空间出现多余的间隔。

img3

出现这种问题，我怀疑应该是一个BUG，设置了值之后就会出现多一倍的空余空间出来。

解决办法，找了好几天之后终于还是被我找到了，在Workspace.java里面有一个矩形空间mInsets，发现里面的值刚刚就是overscan的值，尝试改了一下发现果然有效，但是并不全面然后全局搜索了一下。发现还有三个位置，先后调用顺序分别为：

com.android.launcher3.InsettableFrameLayout//最先调用
com.android.launcher3.Workspace//第二
com.android.launcher3.BaseContainerView//第三

在这三个类里面都有着类似的这个方法，后面测试发现只要改第一个里面的值后面也会相应影响，第一个（InsettableFrameLayout）在哪调用的就不得而知了。

    @Override
public void setInsets(Rect insets) {
//        Log.d("TTTTTTTTTTTT", "3333333"+insets.top);
//        insets.top = 0;
    final int n = getChildCount();
    for (int i = 0; i < n; i++) {
        final View child = getChildAt(i);
        setFrameLayoutChildInsets(child, insets, mInsets);
    }
    mInsets.set(insets);
}

3. 设置网口静态IP地址。

我们机器上面ifconfig里面有多个地址、eth0也就是本方法可改变的值，机器网口、wlan0 wifi地址、p2p0 应该是流量吧、lo 未知。

参考地址1|参考地址2

需要添加权限：测试版本6.0

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.CONNECTIVITY_INTERNAL" />

具体方法：
(1)声明变量：

EthernetManager mEthManager;
private  static String mEthIpAddress = "192.168.253.247";  //IP
private  static String mEthNetmask = "255.255.255.0";  //  子网掩码
private  static String mEthGateway = "192.168.88.1";   //网关
private  static String mEthdns1 = "8.8.8.8";   // DNS1
private  static String mEthdns2 = "8.8.4.4";   // DNS2

(2)在需要改变信息的地方加上如下代码：

mEthManager = (EthernetManager)getSystemService("ethernet");
InetAddress ipaddr=NetworkUtils.numericToInetAddress(mEthIpAddress);
DhcpInfo dhcpInfo = new DhcpInfo();
dhcpInfo.ipAddress = inetAddressToInt(ipaddr);
Inet4Address inetAddr= Utils.getIPv4Address(mEthIpAddress);
int prefixLength=Utils.maskStr2InetMask(mEthNetmask);
InetAddress gatewayAddr = Utils.getIPv4Address(mEthGateway);
InetAddress dnsAddr = Utils.getIPv4Address(mEthdns1);
if (inetAddr.getAddress().toString().isEmpty() || prefixLength ==0 || gatewayAddr.toString().isEmpty()|| dnsAddr.toString().isEmpty()) {
	return;
}
Class<?> clazz = null;
try {
	clazz = Class.forName("android.net.LinkAddress");
} catch (Exception e) {

}
Class[] cl = new Class[]{InetAddress.class, int.class};
Constructor cons = null;
try {
	 cons = clazz.getConstructor(cl);
} catch (NoSuchMethodException e) {
	e.printStackTrace();
}
Object[] x = {inetAddr, prefixLength};
StaticIpConfiguration mStaticIpConfiguration = new StaticIpConfiguration();
String dnsStr2 = mEthdns2;
//mStaticIpConfiguration.ipAddress = new LinkAddress(inetAddr, prefixLength);
try {
	mStaticIpConfiguration.ipAddress = (LinkAddress) cons.newInstance(x);
	Log.d("232323", "chanson 1111111");
} catch (InstantiationException e) {
 e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
mStaticIpConfiguration.gateway=gatewayAddr;
mStaticIpConfiguration.dnsServers.add(dnsAddr);
if (!dnsStr2.isEmpty()) {
	mStaticIpConfiguration.dnsServers.add(Utils.getIPv4Address(dnsStr2));
}
Log.d("2312321", "chanson mStaticIpConfiguration  ====" + mStaticIpConfiguration);

IpConfiguration  mIpConfiguration = new IpConfiguration(IpConfiguration.IpAssignment.STATIC,
IpConfiguration.ProxySettings.NONE, mStaticIpConfiguration, null);
mEthManager.setConfiguration(mIpConfiguration);

Utils类相关方法：

public static Inet4Address getIPv4Address(String text) {
try {
	return (Inet4Address) NetworkUtils.numericToInetAddress(text);
} catch (IllegalArgumentException|ClassCastException e) {
    return null;
}
}
public static int maskStr2InetMask(String maskStr) {
	StringBuffer sb ;
	String str;
	int inetmask = 0;
	int count = 0;
/*
* check the subMask format
*/
Pattern pattern = Pattern.compile("(^((\\d|[01]?\\d\\d|2[0-4]\\d|25[0-5])\\.){3}(\\d|[01]?\\d\\d|2[0-4]\\d|25[0-5])$)|^(\\d|[1-2]\\d|3[0-2])$");
if (pattern.matcher(maskStr).matches() == false) {
  Log.e("33333","subMask is error");
return 0;
}
String[] ipSegment = maskStr.split("\\.");
 for(int n =0; n<ipSegment.length;n++) {
 sb = new StringBuffer(Integer.toBinaryString(Integer.parseInt(ipSegment[n])));
str = sb.reverse().toString();
count=0;
for(int i=0; i<str.length();i++) {
    i=str.indexOf("1",i);
	if(i==-1)
	break;
	count++;
	}
inetmask+=count;
 }
return inetmask;
}

4. Android 6.0 默认桌面壁纸修改

frameworks/base/core/java/android/app/WallpaperManager.java

frameworks/base/core/res/res/下 drawable-sw720dp-nodpi/default_wallpaper.jpg drawable-nodpi/default_wallpaper.jpg drawable-sw600dp-nodpi/default_wallpaper.jpg

参考：https://blog.csdn.net/qq_27256793/article/details/80976871

5. Android4.0 时间更新分析 NTPServer更改

frameworks\base\core\java\android\util\NtpTrustedTime.java

frameworks/base/core/res/res/values/config.xml

参考：https://blog.csdn.net/nickzhang2010/article/details/8004560

6. Android 9.0修改设备名称（amlogic）

路径在
/device/amlogic/marconi/marconi.mk

修改：
PRODUCT_NAME := marconi
PRODUCT_DEVICE := marconi
PRODUCT_BRAND := Coresmore
PRODUCT_MODEL := Car Entertainment
PRODUCT_MANUFACTURER := ShenZhen Coresmore Technology Co.,LTD

参考： https://blog.csdn.net/yql44137228/article/details/41862167 http://blog.sina.com.cn/s/blog_4b4b54da0102wcjz.html