我刚开始使用Android编程,想要创建一个没有特殊噱头的简单Hangman游戏。 我的应用程序的布局如下所示:http://www.imagebanana.com/view/2cqs6lt3/Unbenannt.PNG 因此主要活动包含一个ImageView,也显示游戏的当前状态,一个TextView用于显示要猜测的单词,另一个用于输入的KeyboardView。
对于这个键盘我用这个keyboard_layout.xml文件创建了一个自定义键盘:
<?xml version="1.0" encoding="utf-8"?>
<android.inputmethodservice.Keyboard xmlns:android="http://schemas.android.com/apk/res/android" >
<Row
android:horizontalGap="1%p"
android:keyHeight="8%p"
android:verticalGap="0.7%p" >
<Key
android:codes="65"
android:keyLabel="A" android:keyEdgeFlags="left"/>
<Key
android:codes="66"
android:keyLabel="B" />
<Key
android:codes="67"
android:keyLabel="C" />
<Key
android:codes="68"
android:keyLabel="D" />
<Key
android:codes="69"
android:keyLabel="E" />
<Key
android:codes="70"
android:keyLabel="F" />
<Key
android:codes="71"
android:keyLabel="G" />
<Key
android:codes="72"
android:keyLabel="H" />
<Key
android:codes="73"
android:keyLabel="I" android:keyEdgeFlags="right"/>
</Row>
<Row
android:horizontalGap="1%p"
android:keyHeight="8%p"
android:verticalGap="0.7%p" >
<Key
android:codes="74"
android:keyLabel="J" android:keyEdgeFlags="left"/>
<Key
android:codes="75"
android:keyLabel="K" />
<Key
android:codes="76"
android:keyLabel="L" />
<Key
android:codes="77"
android:keyLabel="M" />
<Key
android:codes="78"
android:keyLabel="N" />
<Key
android:codes="79"
android:keyLabel="O" />
<Key
android:codes="80"
android:keyLabel="P" />
<Key
android:codes="81"
android:keyLabel="Q" />
<Key
android:codes="82"
android:keyLabel="R" android:keyEdgeFlags="right"/>
</Row>
<Row
android:horizontalGap="1%p"
android:keyHeight="8%p"
android:verticalGap="0.7%p" >
<Key
android:codes="83"
android:horizontalGap="2.5%p"
android:keyLabel="S" android:keyEdgeFlags="left"/>
<Key
android:codes="84"
android:keyLabel="T" />
<Key
android:codes="85"
android:keyLabel="U" />
<Key
android:codes="86"
android:keyLabel="V" />
<Key
android:codes="87"
android:keyLabel="W" />
<Key
android:codes="88"
android:keyLabel="X" />
<Key
android:codes="89"
android:keyLabel="Y" />
<Key
android:codes="90"
android:keyLabel="Z" android:keyEdgeFlags="right"/>
</Row>
keyboard_layout</android.inputmethodservice.Keyboard>
并将其传递给keyboardView:
public class MainActivity extends Activity {
...
private void setKeyboardView() {
Keyboard keys = new Keyboard(this, R.xml.keyboard_layout);
KeyboardView kv = (KeyboardView) findViewById(R.id.keyboard_view);
kv.setKeyboard(keys);
kv.setEnabled(true);
kv.setClickable(true);
OnKeyboardActionListener listener = new OnKeyboardActionListener() {
@Override
public void onKey(int primaryCode, int[] keyCodes) {
}
@Override
public void onPress(int primaryCode) {
TextView tv = (TextView) findViewById(R.id.text_view);
tv.setText("" + primaryCode);
}
@Override
public void onRelease(int primaryCode) {
}
@Override
public void onText(CharSequence text) {
// TODO Auto-generated method stub
}
@Override
public void swipeDown() {
// TODO Auto-generated method stub
}
@Override
public void swipeLeft() {
// TODO Auto-generated method stub
}
@Override
public void swipeRight() {
// TODO Auto-generated method stub
}
@Override
public void swipeUp() {
// TODO Auto-generated method stub
}
};
kv.setOnKeyboardActionListener(listener);
}
正如您所看到的,我还添加了一个“OnKeyboardActionListener”,它只是将按下的按钮的keyCode传递给textView。
但是当我按下一个按钮时,无论我按什么按钮,听众都会给出一个空引用。 (当我没有将“primaryCode”转换为字符串时,应用程序崩溃。)除了只有“OnKeyboardActionListener”的“onPress”方法有效时,我将onPress方法中的代码放入onKey或onRelease方法什么都没发生。
这是我的MainActivity的布局xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ImageView android:id="@+id/image_view"
android:contentDescription="@string/imgView"
android:layout_weight="3"
android:layout_height="0dp"
android:layout_width="match_parent"
android:background="@android:color/background_dark"
/>
<TextView android:id="@+id/text_view"
android:layout_weight="1"
android:layout_height="0dp"
android:layout_width="fill_parent"
android:textSize="25sp"
android:gravity="center"
android:hint="@string/textview_hint"
android:background="@android:color/background_dark"
/>
<android.inputmethodservice.KeyboardView android:id="@+id/keyboard_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
所以我用Google搜索并尝试了不同的设置,但没有任何帮助:( 你们中有谁可以帮我解决这个问题吗? 一般来说,将keyBoardView永久显示在我的程序中这样做是不是一个好主意?
问候 rakumbo
答案 0 :(得分:0)
尝试:
StringBuilder mComposing = new StringBuilder();
String value = mComposing.append((char) primaryCode);
在此处更改
@Override
public void onPress(int primaryCode) {
TextView tv = (TextView) findViewById(R.id.text_view);
tv.setText("" + value);
}
<强>布局/ input.xml中
<android.inputmethodservice.KeyboardView android:id="@+id/keyboard_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<强>键盘
Keyboard keys = new Keyboard(this, R.xml.keyboard_layout);
KeyboardView mInputView = (KeyboardView) getLayoutInflater().inflate(
R.layout.input, null);
mInputView.setOnKeyboardActionListener(this);
mInputView.setKeyboard(keys);