在自定义键盘中按下弹出键

时间:2014-09-18 11:25:17

标签: android keyboard keyboard-events

我正在使用keyboardview拥有自己的键盘。

工作正常,但我不能像按键盘那样放大按键的效果

zoom image

这些是使用

的部分
<android.inputmethodservice.KeyboardView
        android:id="@+id/keyboardview"
        style="@style/Widget.KeyboardView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:shadowRadius="0"
        android:visibility="visible" />

   <style name="Widget.KeyboardView" parent="android:Widget.KeyboardView">
            <item name="android:background">@drawable/naranja</item>
            <item name="android:keyBackground">@drawable/naranja</item>
            <item name="android:keyTextSize">40sp</item>
            <item name="android:keyTextColor">#d35400</item>
            <item name="android:keyPreviewLayout">@layout/keyboard_popup_keyboard</item>
            <item name="android:keyPreviewOffset">12dp</item>
            <item name="android:keyPreviewHeight">80dp</item>  
            <item name="android:popupLayout">@layout/keyboard_popup_keyboard</item>
        </style>

XML /弹出:

   <?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>

     <Key
                android:codes="81"
                android:keyEdgeFlags="left"
                android:keyLabel="Q"
                android:popupCharacters="Q"
                android:popupKeyboard="@xml/popup" />

    etc...

我尝试过使用onKey方法,也来自XML。但没有成功。

1 个答案:

答案 0 :(得分:12)

仅显示放大的预览,KeyboardView默认情况下应该这样做。您不希望设置popupKeyboard值,因为这是针对长按时显示的特殊迷你键盘。

我假设您关注this tutorial。请注意第3.3节中的这些内容:

// Do not show the preview balloons
mKeyboardView.setPreviewEnabled(false);

而是将其设置为true

完整解决方案

在您的活动布局中:

<android.inputmethodservice.KeyboardView
    android:id="@+id/keyboardview"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:keyPreviewOffset="12dp"
    android:keyPreviewLayout="@layout/kbpreview"
    android:visibility="visible" />

此处的重要属性为keyPreviewLayoutkeyPreviewOffsetkeyPreviewHeight

布局/ kbpreview.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:gb="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:background="@color/red"
    android:textSize="30dp" />

XML / kb.xml

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="12.50%p"
    android:keyHeight="10%p" >

    <Row>
        <Key android:codes="55"    android:keyLabel="7" android:keyEdgeFlags="left" />
        <Key android:codes="56"    android:keyLabel="8" />
        <Key android:codes="57"    android:keyLabel="9" />
        <Key android:codes="65"    android:keyLabel="A" android:horizontalGap="6.25%p" />
        <Key android:codes="66"    android:keyLabel="B" />
        <Key android:codes="55006" android:keyLabel="CLR" android:keyEdgeFlags="right"/>
    </Row>

    <!-- and whatever else... -->

</Keyboard>

在您的活动代码中

    Keyboard mKeyboard = new Keyboard(this, R.xml.kb);

    // Lookup the KeyboardView
    KeyboardView mKeyboardView = (KeyboardView) findViewById(R.id.keyboardview);

    // Attach the keyboard to the view
    mKeyboardView.setKeyboard(mKeyboard);

    // Key listener required
    mKeyboardView.setOnKeyboardActionListener(myListener);

<强>结果

按下'5'键:

enter image description here

您可能还会发现查看KeyboardView source code非常有用。