系统软键盘">Android在外接物理键盘时,如何强制调用系统软键盘?
第一次写,写的不好请见谅
物理键盘映射过程:
手机/system/usr/keylayout/*.kl :内核将keyCode映射成有含义的字符串
KeycodeLabels.h : framework 将字符串映射成keyEvent的keyCode
frameworks/…/res/values/attrs.xml
- 主要部分:android.jar
一、问题描述:
当平板连接上蓝牙扫描枪(外接物理键盘)时候,不能弹出软键盘输入,需要打开系统的输入法选择界面关闭硬件物理键盘后才能调用弹出系统软键盘;
理想效果:
在平板连接上蓝牙扫描枪后仍可以调用系统软键盘输入,将系统的物理键盘默认设置为关闭状态,或不需要开启关闭物理键盘,
二、思路
1.首先:你要知道AndroidManifest.xml文件。这里这里有的信息对于理解程序又很大的意义。
2.学会使用grep命令。修改系统的源代码时候这个很重要,
3.当想修改一个程序时,先找到这个程序的位置,大部分只要修改framework 和package 两个文件夹下的内容
4.关键字,例如要修改statuBars。先使用hierarchyviewer查看statuBar属于那个部分。
5.根据图标,使用grep在framework中查找对应的位置。
6.然后就是修改程序了。
三、部分代码
android版本源码
frameworks/base/services/Java/com/android/server/wm/WindowManagerService.java
关键代码:行6618 computeScreenConfigurationLocked()方法中
[java] view plaincopy在CODE上查看代码片派生到我的代码片
boolean hardKeyboardAvailable = config.keyboard != Configuration.KEYBOARD_NOKEYS; if (hardKeyboardAvailable != mHardKeyboardAvailable) { mHardKeyboardAvailable = hardKeyboardAvailable; mHardKeyboardEnabled = !hardKeyboardAvailable; mH.removeMessages(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE); mH.sendEmptyMessage(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE); } if (!mHardKeyboardEnabled) { config.keyboard = Configuration.KEYBOARD_NOKEYS; }
将mHardKeyboardEnabled直接改成false
这样改软键盘是能用但是物理键盘是用不了的
最后研究代码frameworks\base\services\core\java\com\android\server\wm\WindowManagerService.java
如果把updateShowImeWithHardKeyboard方法中的showImeWithHardKeyboard变量直接置为true,则可以实现软键盘与物理键盘的同时使用,
但此举修改影响范围很大,不推荐。
public void updateShowImeWithHardKeyboard() { //modified by Janning for enble the HardKeyboard start final boolean showImeWithHardKeyboard = Settings.Secure.getIntForUser( mContext.getContentResolver(), Settings.Secure.SHOW_IME_WITH_HARD_KEYBOARD, 0, mCurrentUserId) == 1; //final boolean showImeWithHardKeyboard = true; //modified by Janning for enble the HardKeyboard end synchronized (mWindowMap) { if (mShowImeWithHardKeyboard != showImeWithHardKeyboard) { mShowImeWithHardKeyboard = showImeWithHardKeyboard; mH.sendEmptyMessage(H.SEND_NEW_CONFIGURATION); } } }
后续继续研究代码发现在WindowManagerService.java的computeScreenConfigurationLocked方法中有通过判断当前物理键盘类型来控制是否同时启用软件盘的处理逻辑:
boolean computeScreenConfigurationLocked(Configuration config) { if (!mDisplayReady) { return false; } // TODO(multidisplay): For now, apply Configuration to main screen only. final DisplayContent displayContent = getDefaultDisplayContentLocked(); // Use the effective "visual" dimensions based on current rotation final boolean rotated = (mRotation == Surface.ROTATION_90 || mRotation == Surface.ROTATION_270); final int realdw = rotated ? displayContent.mBaseDisplayHeight : displayContent.mBaseDisplayWidth; final int realdh = rotated ? displayContent.mBaseDisplayWidth : displayContent.mBaseDisplayHeight; int dw = realdw; int dh = realdh; if (mAltOrientation) { if (realdw > realdh) { // Turn landscape into portrait. int maxw = (int)(realdh/1.3f); if (maxw < realdw) { dw = maxw; } } else { // Turn portrait into landscape. int maxh = (int)(realdw/1.3f); if (maxh < realdh) { dh = maxh; } } } if (config != null) { config.orientation = (dw <= dh) ? Configuration.ORIENTATION_PORTRAIT : Configuration.ORIENTATION_LANDSCAPE; } // Update application display metrics. final int appWidth = mPolicy.getNonDecorDisplayWidth(dw, dh, mRotation); final int appHeight = mPolicy.getNonDecorDisplayHeight(dw, dh, mRotation); final DisplayInfo displayInfo = displayContent.getDisplayInfo(); synchronized(displayContent.mDisplaySizeLock) { displayInfo.rotation = mRotation; displayInfo.logicalWidth = dw; displayInfo.logicalHeight = dh; displayInfo.logicalDensityDpi = displayContent.mBaseDisplayDensity; displayInfo.appWidth = appWidth; displayInfo.appHeight = appHeight; displayInfo.getLogicalMetrics(mRealDisplayMetrics, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null); displayInfo.getAppMetrics(mDisplayMetrics); mDisplayManagerInternal.setDisplayInfoOverrideFromWindowManager( displayContent.getDisplayId(), displayInfo); } if (false) { Slog.i(TAG, "Set app display size: " + appWidth + " x " + appHeight); } final DisplayMetrics dm = mDisplayMetrics; mCompatibleScreenScale = CompatibilityInfo.computeCompatibleScaling(dm, mCompatDisplayMetrics); if (config != null) { config.screenWidthDp = (int)(mPolicy.getConfigDisplayWidth(dw, dh, mRotation) / dm.density); config.screenHeightDp = (int)(mPolicy.getConfigDisplayHeight(dw, dh, mRotation) / dm.density); computeSizeRangesAndScreenLayout(displayInfo, rotated, dw, dh, dm.density, config); config.compatScreenWidthDp = (int)(config.screenWidthDp / mCompatibleScreenScale); config.compatScreenHeightDp = (int)(config.screenHeightDp / mCompatibleScreenScale); config.compatSmallestScreenWidthDp = computeCompatSmallestWidth(rotated, dm, dw, dh); config.densityDpi = displayContent.mBaseDisplayDensity; // Update the configuration based on available input devices, lid switch, // and platform configuration. config.touchscreen = Configuration.TOUCHSCREEN_NOTOUCH; config.keyboard = Configuration.KEYBOARD_NOKEYS; config.navigation = Configuration.NAVIGATION_NONAV; int keyboardPresence = 0; int navigationPresence = 0; final InputDevice[] devices = mInputManager.getInputDevices(); final int len = devices.length; for (int i = 0; i < len; i++) { InputDevice device = devices[i]; if (!device.isVirtual()) { final int sources = device.getSources(); final int presenceFlag = device.isExternal() ? WindowManagerPolicy.PRESENCE_EXTERNAL : WindowManagerPolicy.PRESENCE_INTERNAL; if (mIsTouchDevice) { if ((sources & InputDevice.SOURCE_TOUCHSCREEN) == InputDevice.SOURCE_TOUCHSCREEN) { config.touchscreen = Configuration.TOUCHSCREEN_FINGER; } } else { config.touchscreen = Configuration.TOUCHSCREEN_NOTOUCH; } if ((sources & InputDevice.SOURCE_TRACKBALL) == InputDevice.SOURCE_TRACKBALL) { config.navigation = Configuration.NAVIGATION_TRACKBALL; navigationPresence |= presenceFlag; } else if ((sources & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD && config.navigation == Configuration.NAVIGATION_NONAV) { config.navigation = Configuration.NAVIGATION_DPAD; navigationPresence |= presenceFlag; } // 判断该物理设备的类型, InputDevice.KEYBOARD_TYPE_ALPHABETIC 是表示物理键盘设备 if (device.getKeyboardType() == InputDevice.KEYBOARD_TYPE_ALPHABETIC) { config.keyboard = Configuration.KEYBOARD_QWERTY; keyboardPresence |= presenceFlag; } // 获取物理设备名称,判断是否是指定的名称,如果是则把 config.keyboard // 的属性置为 Configuration.KEYBOARD_NOKEYS ,如此则可以同时兼容软键盘 // 物理键盘与软键盘可以同时启用 // Add by Janning start // for show IME with HardKeyboard if (device.getName().equals("XXX-vinput-keypad")) { Slog.w("SLCODE", "the hard device name is: " + device.getName()); config.keyboard = Configuration.KEYBOARD_NOKEYS; } // Add by Janning end } } if (config.navigation == Configuration.NAVIGATION_NONAV && mHasPermanentDpad) { config.navigation = Configuration.NAVIGATION_DPAD; navigationPresence |= WindowManagerPolicy.PRESENCE_INTERNAL; } // Determine whether a hard keyboard is available and enabled. boolean hardKeyboardAvailable = config.keyboard != Configuration.KEYBOARD_NOKEYS; if (hardKeyboardAvailable != mHardKeyboardAvailable) { mHardKeyboardAvailable = hardKeyboardAvailable; mH.removeMessages(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE); mH.sendEmptyMessage(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE); } if (mShowImeWithHardKeyboard) { config.keyboard = Configuration.KEYBOARD_NOKEYS; } // Let the policy update hidden states. config.keyboardHidden = Configuration.KEYBOARDHIDDEN_NO; config.hardKeyboardHidden = Configuration.HARDKEYBOARDHIDDEN_NO; config.navigationHidden = Configuration.NAVIGATIONHIDDEN_NO; mPolicy.adjustConfigurationLw(config, keyboardPresence, navigationPresence); } return true; } public boolean isHardKeyboardAvailable() { synchronized (mWindowMap) { return mHardKeyboardAvailable; } } public void updateShowImeWithHardKeyboard() { // 此处修改也可以实现物理键盘与软键盘的同时启用,即把showImeWithHardKeyboard 直接置为 true, // 但此方法影响太大,不推荐该方案,建议根据设备名称判断 修改config.keyboard 属性值(代码见上文) //changed by Janning start //modified by Janning for enble the HardKeyboard start final boolean showImeWithHardKeyboard = Settings.Secure.getIntForUser( mContext.getContentResolver(), Settings.Secure.SHOW_IME_WITH_HARD_KEYBOARD, 0, mCurrentUserId) == 1; //final boolean showImeWithHardKeyboard = true; //modified by Janning for enble the HardKeyboard end //changed by Janning end synchronized (mWindowMap) { if (mShowImeWithHardKeyboard != showImeWithHardKeyboard) { mShowImeWithHardKeyboard = showImeWithHardKeyboard; mH.sendEmptyMessage(H.SEND_NEW_CONFIGURATION); } } }
当插入物理键盘后通知栏会弹出相应的选择键盘布局通知,对于该通知可以选择隐藏:
根据字符串查找到是在 frameworks\base\services\core\java\com\android\server\input\InputManagerService.java 中调用显示该通知的,
进一步分析代码发现是在 deliverInputDevicesChanged 方法中控制通知的显示。
InputManagerService.java
private void deliverInputDevicesChanged(InputDevice[] oldInputDevices) { 。。。。。。。。。。。。。。。。 if (missingLayoutForExternalKeyboard) { if (missingLayoutForExternalKeyboardAdded) { if (multipleMissingLayoutsForExternalKeyboardsAdded) { // We have more than one keyboard missing a layout, so drop the // user at the generic input methods page so they can pick which // one to set. showMissingKeyboardLayoutNotification(null); } else { // 如果只插入了一个物理键盘则判断该物理键盘的名称是否是指定的,如果是则不让其显示键盘布局的通知 // Modify by Janning begin if (keyboardMissingLayout != null && !keyboardMissingLayout.getName().equals("XXXX-vinput-keypad")) { showMissingKeyboardLayoutNotification(keyboardMissingLayout); } // Modify by Janning end } } } else if (mKeyboardLayoutNotificationShown) { hideMissingKeyboardLayoutNotification(); } } mTempFullKeyboards.clear(); }
注意 注意 注意,重要的说三遍;
加入以上你都修改了,以为这样都OK了,那你就OUT了
系统软键盘">Android在外接物理键盘时,如何强制调用系统软键盘?的更多相关文章
- 代码实现将键盘录入的数据拷贝到当前项目下的text.txt文件中,键盘录入数据当遇到quit时就退出
package com.looaderman.test; import java.io.FileNotFoundException; import java.io.FileOutputStream; ...
- 使用downloadmanager调用系统的下载
/** * 文件名 UpdateDownload.java * 包含类名列表 com.issmobile.numlibrary.tool * 版本信息 版本号 * 创建日期 2014年7月14日 ...
- webView调用系统地图,电话,和跳转链接的方法
webView.dataDetectorTypes = UIDataDetectorTypePhoneNumber | UIDataDetectorTypeLink | UIDataDetectorT ...
- APP调用系统相册,使用3DTouch重压,崩溃
崩溃:app调用系统相册,使用3DTouch重压,崩溃 问题描述 app调用系统相册,使用3DTouch重压,一般的app都会崩溃. 解决方法 写个分类即可 @implementation UICol ...
- android制,点击EditText时刻,隐藏系统软键盘,显示光标
由于项目中要用自己定义的随机键盘,所以必须得屏蔽系统软键盘,可是在4.0的測试系统来看,使用editText.setInputType(InputType.TYPE_NULL)方法固然能隐藏键盘,可是 ...
- 软键盘android:windowSoftInputMode属性详解
android:windowSoftInputModeactivity主窗口与软键盘的交互模式,可以用来避免输入法面板遮挡问题,Android1.5后的一个新特性.这个属性能影响两件事情:[一]当有焦 ...
- Visual studio之C# 调用系统软键盘(外部"osk.exe")
背景 App需要调用系统软键盘输入数据,自己去实现软键盘有些复杂,现在又是急需,没时间去研究实现软键盘,所以只能调用系统软键盘. 正文 需要添加命名空间, using System.Diagnosti ...
- Android常用的物理按键及其触发事件
Activity和View都能接收触摸和按键,如果响应事件只需要在继承类里复写事件函数即可:当一个视图(如一个按钮)被触摸时,该对象上的 onTouchEvent() 方法会被调用.不过,为了侦听这个 ...
- SenchaTouch调用纯数字键盘
items:[ { itemId:"phoneNumber", xtype: "textfield", component:{xtype:"input ...
随机推荐
- virtualvenv+django+uWSGI+nginx 部署
原创博文 转载请注明出处! 1. virtualvenv 2. django 3. uWSGI 4. nginx 5. 踩坑记录 1. virtualvenv virtualvenv install ...
- 【laravel】laravel class 里面定义以head开头的方法会报错
BadMethodCallException in Macroable.php line 81:Method head does not exist.
- python标准输入输出
input() 读取键盘输入 input() 函数从标准输入读入一行文本,默认的标准输入是键盘. input 可以接收一个Python表达式作为输入,并将运算结果返回. print()和format( ...
- Flask初学者:Jinja2模板
Python的Jinja2模板,其实就是在HTML文档中使用控制语句和表达语句替换HTML文档中的变量来控制HTML的显示格式,Python的Jinja2模板可以更加灵活和方便的控制HTML的显示,而 ...
- URAL - 2065 Different Sums (思维题)
题意: 给n和k,让你用不小于 k 个不同的数字构成一个长度为n的序列,使得序列中不同的区间和的数目最小. n,k<=500 k-1个数填一些数字的一正一负,这样有些区间和为0. 剩下的都填0. ...
- 数学基础:HUD1406-完数
完数 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem Descript ...
- vmware10下载地址
https://download3.vmware.com/software/wkst/file/VMware-Workstation-Full-10.0.1-1379776.x86_64.bundle ...
- webdriver高级应用- 无人工干预地自动上传附件
方法一:使用webdriver的send_keys方法上传文件,代码如下: #encoding=utf-8 from selenium import webdriver import unittest ...
- Pycharm 简单设置
- [git 学习篇] git commit原理 --实践体会
1 现对readme.txt作出修改,增加一行内容: Git has a mutable index called stage. Git is a distributed version contro ...