我正在研究自定义键盘应用程序
这是softkeyboard中input.xml的背景颜色代码： –
@Override
public View onCreateInputView() {
Log.e("onStartInputView ","On StartInput View Called--");
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String Backgroundcolour = preferences.getString("BackgroundColour","");
Log.e("Brithnesss- -","----"+Backgroundcolour);
if(Backgroundcolour.equalsIgnoreCase("black"))
{
this.mInputView = (KeyboardView) getLayoutInflater().inflate(
R.layout.input,null);
}else
{
this.mInputView = (KeyboardView) getLayoutInflater().inflate(
R.layout.input1,null);
//this.mInputView.setB
}
this.mInputView.setonKeyboardActionListener(this);
this.mInputView.setKeyboard(this.mQwertyKeyboard);
return this.mInputView;
}
@Override public void onStartInputView(EditorInfo attribute,boolean restarting) {
super.onStartInputView(attribute,restarting);
// Apply the selected keyboard to the input view.
setInputView(onCreateInputView());
}
我没有得到如何设置特定键的背景图像.
解决方法
例如,有一个
small downloadable project可以创建自定义数字键盘.对于CustomKeyboardView类或您自己的自定义键盘类,添加如下方法.它会覆盖onDraw()方法并绘制使用代码7(在本例中为“0”)红色定义的键的背景,并将所有其他键绘制为蓝色.
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
List<Key> keys = getKeyboard().getKeys();
for (Key key : keys) {
if (key.codes[0] == 7) {
Log.e("KEY","Drawing key with code " + key.codes[0]);
Drawable dr = (Drawable) context.getResources().getDrawable(R.drawable.red_tint);
dr.setBounds(key.x,key.y,key.x + key.width,key.y + key.height);
dr.draw(canvas);
} else {
Drawable dr = (Drawable) context.getResources().getDrawable(R.drawable.blue_tint);
dr.setBounds(key.x,key.y + key.height);
dr.draw(canvas);
}
}
}
在这种情况下,我没有使用9-patch图像,只是一些简单的50％透明方形图像,并且实现了现有按钮仅仅用我想要的颜色着色的效果.为了获得更自定义的结果,我可以制作我的背景可绘制9补丁图像并执行以下操作.请注意,带有图标的两个键无法正确呈现,因为图标未定义为9-patch图像,并且我没有做出任何特别的努力来允许它们在此示例中很好地扩展.我也没有解决对各种状态的键使用不同的图像/效果;其他人已经证明了如何做到这一点.
@Override
public void onDraw(Canvas canvas) {
// super.onDraw(canvas);
List<Key> keys = getKeyboard().getKeys();
for (Key key : keys) {
if (key.codes[0] == 7) {
NinePatchDrawable npd
= (NinePatchDrawable) context.getResources().getDrawable(R.drawable.red_key);
npd.setBounds(key.x,key.y + key.height);
npd.draw(canvas);
} else {
NinePatchDrawable npd
= (NinePatchDrawable) context.getResources().getDrawable(R.drawable.blue_key);
npd.setBounds(key.x,key.y + key.height);
npd.draw(canvas);
}
Paint paint = new Paint();
paint.setTextAlign(Paint.Align.CENTER);
paint.setTextSize(48);
paint.setColor(Color.GRAY);
if (key.label != null) {
canvas.drawText(key.label.toString(),key.x + (key.width / 2),key.y + (key.height / 2),paint);
} else {
key.icon.setBounds(key.x,key.y + key.height);
key.icon.draw(canvas);
}
}
}