android 键盘问题

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最近搞安卓4.0平板，系统起来后老是默认为硬键盘，怎么老是默认为硬键盘呢？怎么改为默认软键盘？一系列问题出现了。

转载请注明出处：http://blog.csdn.net/harhy

跟踪下Java语言：

在 android-4.0.4/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java中有这么一段

@Override
public void setHardKeyboardStatus(boolean available, boolean enabled) {
if (DEBUG) {
Slog.d(TAG, "Set hard keyboard status: available=" + available
+ ", enabled=" + enabled);
}
//available = true;
//enabled = false;
mInputMethodSwitchButton.setHardKeyboardStatus(available);
updateNotificationIcons();
mInputMethodsPanel.setHardKeyboardStatus(available, enabled);
}

我先假设两个值true。false。编译一下结果在右下角点击后显示是“OFF”也就是软件连接。打开浏览求点击输入时候仍然弹不出软键盘。推测一下估计在前面。往前跟踪

android-4.0.4/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/
StatusBar.java里面

setHardKeyboardStatus(switches[5] != 0, switches[6] != 0);

现在看switches[6] != 0推测这个为假，向上看switches是如何定义的的有这个函数

try {
mBarService.registerStatusBar(mCommandQueue, iconList, notificationKeys, notifications,
switches, binders);
} catch (RemoteException ex) {
// If the system process isn't there we're doomed anyway.
}

在android-4.0.4/frameworks/base/services/java/com/android/service/StatusBarMangerService.java 有这么一个注册

// ================================================================================
// Callbacks from the status bar service.
// ================================================================================
public void registerStatusBar(IStatusBar bar, StatusBarIconList iconList,
List<IBinder> notificationKeys, List<StatusBarNotification> notifications,
int switches[], List<IBinder> binders) {
enforceStatusBarService();

Slog.i(TAG, "registerStatusBar bar=" + bar);
mBar = bar;
synchronized (mIcons) {
iconList.copyFrom(mIcons);
}
synchronized (mNotifications) {
for (Map.Entry<IBinder,StatusBarNotification> e: mNotifications.entrySet()) {
notificationKeys.add(e.getKey());
notifications.add(e.getValue());
}
}
synchronized (mLock) {
switches[0] = gatherDisableActionsLocked();
switches[1] = mSystemUiVisibility;
switches[2] = mMenuVisible ? 1 : 0;
switches[3] = mImeWindowVis;
switches[4] = mImeBackDisposition;
binders.add(mImeToken);
}
switches[5] = mWindowManager.isHardKeyboardAvailable() ? 1 : 0;
switches[6] = mWindowManager.isHardKeyboardEnabled() ? 1 : 0;
}

注意后面isHardKeyboardEnabled()查找这个函数：

android-4.0.4/frameworks/base/services/java/com/android/service/wm/windowmangerservice.java里面有定义

public boolean isHardKeyboardEnabled() {
synchronized (mWindowMap) {
return mHardKeyboardEnabled;
}

网上查找这个值mHardKeyboardEnabled

在上面可以发现

// Determine whether a hard keyboard is available and enabled.
boolean hardKeyboardAvailable = config.keyboard != Configuration.KEYBOARD_NOKEYS;

if (hardKeyboardAvailable != mHardKeyboardAvailable) {
mHardKeyboardAvailable = hardKeyboardAvailable;

mHardKeyboardEnabled = false ;//本人添加

mH.removeMessages(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE);
mH.sendEmptyMessage(H.REPORT_HARD_KEYBOARD_STATUS_CHANGE);
}
if (!mHardKeyboardEnabled) {
config.keyboard = Configuration.KEYBOARD_NOKEYS;
}

至于为什么要设置成false 要看最上面那一句话：

boolean hardKeyboardAvailable = config.keyboard != Configuration.KEYBOARD_NOKEYS; 这句话用来判断

如果想不添加那一句。就需要修改config.keyboard != Configuration.KEYBOARD_NOKEYS使这一个为假就ok了。

但是我找半天没找到。希望找到交流一下。谢谢！