软键盘的弹出布局设计

Question

我正在开发一款软键盘，并且进展顺利，但是我不知道如何为长按自定义弹出布局。

我的 KeyboardView：

<?xml version="1.0" encoding="UTF-8"?>
<android.inputmethodservice.KeyboardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/keyboard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:keyPreviewLayout="@layout/preview"
android:keyBackground="@drawable/key_selector"
android:shadowRadius="0.0"
android:keyTextColor="#000000"
/>

我的键盘布局：

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
android:keyWidth="10%p"
android:keyHeight="10%p">

<Row android:verticalGap="1%p"  android:horizontalGap="0.5%p" android:keyHeight="8%p" android:keyWidth="9.6%p">
    <Key android:codes="113"    android:keyLabel="q" />
    <Key android:codes="119"    android:keyLabel="w" />
    <Key android:codes="101"    android:keyLabel="e"  
        />
    <Key android:codes="114"    android:keyLabel="r" />
    <Key android:codes="116"    android:keyLabel="t" />
    <Key android:codes="121"    android:keyLabel="y"
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="yýÿ"/>
    <Key android:codes="117"    android:keyLabel="u"
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="uúùũûü"/>
    <Key android:codes="105"    android:keyLabel="i" 
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="iíìĩîï"/>
    <Key android:codes="111"    android:keyLabel="o" 
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="oóò&#245;ôö" />
    <Key android:codes="112"    android:keyLabel="p" />
</Row>
<Row android:verticalGap="1%p" android:horizontalGap="0.5%p" android:keyHeight="8%p" android:keyWidth="9.6%p">
    <Key android:codes="97"    android:keyLabel="a" android:keyEdgeFlags="left" android:horizontalGap="5%p"
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="aáà&#227;âä"/>
    <Key android:codes="115"    android:keyLabel="s" />
    <Key android:codes="100"    android:keyLabel="d" />
    <Key android:codes="102"    android:keyLabel="f" />
    <Key android:codes="103"    android:keyLabel="g" />
    <Key android:codes="104"    android:keyLabel="h" />
    <Key android:codes="106"    android:keyLabel="j" />
    <Key android:codes="107"    android:keyLabel="k" />
    <Key android:codes="108"    android:keyLabel="l" />
</Row>
<Row android:verticalGap="1%p"  android:horizontalGap="0.5%p" android:keyHeight="8%p" android:keyWidth="9.6%p">
    <Key android:codes="3"      android:keyIcon="@drawable/keyboard_shift_off" 
         android:keyHeight="7.6%p" android:keyWidth="13.7%p"/>
    <Key android:codes="122"    android:keyLabel="z" android:horizontalGap="1%p"/>
    <Key android:codes="120"    android:keyLabel="x" />
    <Key android:codes="99"     android:keyLabel="c"
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="cç"/>
    <Key android:codes="118"    android:keyLabel="v" />
    <Key android:codes="98"     android:keyLabel="b" />
    <Key android:codes="110"    android:keyLabel="n"
         android:popupKeyboard="@xml/keyboard_popup" android:popupCharacters="nñ"/>
    <Key android:codes="109"    android:keyLabel="m" />
    <Key android:codes="-5"     android:keyIcon="@drawable/sym_keyboard_delete_dim"
        android:keyHeight="7.6%p" android:keyWidth="13.7%p" 
        android:horizontalGap="1%p"/>
</Row>
<Row android:verticalGap="1%p"  android:horizontalGap="0.5%p" android:keyHeight="8%p" android:keyWidth="9.6%p">
    <Key android:codes="-16"    android:keyIcon="@drawable/keyboard_symbol"
         android:keyHeight="7.6%p" android:keyWidth="18.7%p"/>
    <Key android:codes="44"     android:keyLabel="," android:horizontalGap="1%p"/>
    <Key android:codes="32"     android:keyIcon="@drawable/sym_keyboard_feedback_space" android:keyWidth="40%p"/>
    <Key android:codes="46"     android:keyLabel="."/>
    <Key android:codes="-3"     android:keyIcon="@drawable/keyboard_go" 
        android:keyHeight="7.6%p" android:keyWidth="18.5%p" android:horizontalGap="1%p"/>
</Row>

键盘弹出XML：

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
android:keyWidth="10%p"
android:keyHeight="10%p">
</Keyboard>

我尝试在各个地方放置keyBackground和background属性，但都没有成功。我尝试放置：

android:popupLayout="@layout/keyboard"

在keyboardView上却得到空指针，也许我在参数中放了错误的XML？

我在这里放置的键盘弹出XML:

android:popupKeyboard="@xml/keyboard_popup"

我可以更改布局的大小、键的大小、键之间的距离等，但不能更改颜色或背景。

按键预览也很好，我将其放在keyboardView上：

android:keyPreviewLayout="@layout/preview"

它可以正常工作。我认为弹出窗口应该是相同的方式，但实际上并不是。

如何自定义长按键时出现的弹出窗口？

- Ricardo A.

---

这个问题 https://dev59.com/J2sz5IYBdhLWcg3wpZlF 将会很有帮助。 - AMD

Answer 1

嗯，这不完全是我要找的，但这解决了问题。

我制作了自己的键盘视图，并在长按键时弹出一个弹窗。

public class MyKeyboardView extends KeyboardView{
   @Override
   protected boolean onLongPress(final Key popupKey) {
        final View custom = LayoutInflater.from(context)
        .inflate(R.layout.popup_layout, new FrameLayout(context));
        popup = new PopupWindow(context);
        popup.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
        popup.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
        popup.showAtLocation(this, Gravity.NO_GRAVITY, popupKey.x, popupKey.y-50);
        return true;
   }
}

这样你可以在xml中自定义弹出窗口的任何方式。但是，如果您知道更好的方法，请回答这个问题。

- Ricardo A.

---

你有找到其他的解决方案吗？或者你尝试过在Android Pie中使用这个弹出窗口吗？ - Priyanka

很遗憾，目前还没有。 - Ricardo A.