上下文动作条隐藏当我点击硬件后退按钮和键盘不在 [英] Contextual ActionBar hides when I click on hardware backbutton and the keyboard is out

问题描述

我使用的语境动作条进行编辑，当我有显示的键盘，我想通过$ P $来隐藏它pssing硬件后退按钮，它隐藏了键盘，但它也取消上下文动作条，我真的can'找不到办法​​如何保持它。

I am using the Contextual ActionBar for editing and when I have the keyboard shown and I want to hide it by pressing the hardware back button, it hides the keyboard but it also cancels the contextual actionbar and I really can´t find a way how to keep it on.

有人吗？

推荐答案

您应该尽量覆盖返回键硬件，并以<$ C处理预期的行为$ C>布尔如下：

You should try to override the Back Key hardware, and handle the expected behaviour with a boolean as follows:

// boolean isVisible to retrieve the state of the SoftKeyboard
private boolean isVisible = false;

// isVisible becomes 'true' if the user clicks on EditText

// then, if the user press the back key hardware, handle it:
@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        // check isVisible
        if(isVisible) {
            // hide the keyboard
            InputMethodManager mImm = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
            mImm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
            isVisible = false;
        } else {
            // remove the CAB
            mActionMode.finish();
        }
    }
    return false;
}  

另一种解决方案可能是叫 dispatchKeyEvent 方法显示 CAB 时，它仍然是所谓的：

Another solution might be to call dispatchKeyEvent method which is still called when the CAB is displayed:

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
        // check CAB active and isVisible softkeyboard
        if(mActionModeIsActive && isVisible) {
            InputMethodManager mImm = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
            mImm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
            isVisible = false;
            return true;
        // Maybe you might do not call the 'else' condition, anyway..
        } else {
            mActionMode.finish();
            return true;
        }
    }
    return super.dispatchKeyEvent(event);
}  

这应该做的伎俩，但我没有测试它。希望这有助于。结果
的来源：<一个href=\"http://emumair.word$p$pss.com/2011/11/22/how-to-override-android-back-key-when-soft-keyboard-is-open/\"相对=nofollow>如何替代Android的后退键时softkeyboard是开放 - prevent取消操作模式由preSS后退按钮 的

This should do the trick, but I have not tested it. Hope this helps.
Sources: How to Override android's back key when softkeyboard is open - Prevent to cancel Action Mode by press back button

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