问题
I am Working on Custom Keyboard Application
This is code for background color of input.xml in softkeyboard :-
@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());
}
I am not getting how to set background image for specific key.
回答1:
As an example, there's a small downloadable project that creates a custom numeric keyboard. To the CustomKeyboardView class there or to your own custom keyboard class, add a method like the following. It overrides the onDraw() method and draws the background of the key defined with code 7 (in this case the "0") red and all the other keys blue.
@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.x + key.width, key.y + key.height);
dr.draw(canvas);
}
}
}
In this case, I didn't use 9-patch images, but just some simple 50% transparent square images and achieved an effect where the existing buttons are merely tinted with the colors I wanted. To get a more custom result, I could make my background drawables 9-patch images and do the following. Note that the two keys with icons don't render correctly because the icons aren't defined as 9-patch images and I didn't make any special effort to allow them to scale well for this example. I also didn't address the use of different images/effects for the various states for the keys; others have shown how to do that.
@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.x + key.width, 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.x + key.width, 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.x + key.width, key.y + key.height);
key.icon.draw(canvas);
}
}
}
回答2:
I created a keyboard app in which I use the KeyBackground property in KeyboardView, like so:
<KeyboardView android:keyBackground="@drawable/buttonbgselector" .../>
To do this dynamically I use the following code:
@Override
public View onCreateInputView() {
mInputView = (KeyboardView) getLayoutInflater().inflate(R.layout.input, null);
mInputView.setBackgroundResource(R.drawable.buttonbgselector);
mInputView.setOnKeyboardActionListener(this);
mInputView.setKeyboard(mQwertyKeyboard);
return mInputView;
}
回答3:
Keeping it simple, you should make class MyKeyboardView and do some hack similar to this.
public class MyKeyboardView extends android.inputmethodservice.KeyboardView {
Context context;
public MyKeyboardView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
this.context = context ;
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint paint = new Paint();
Typeface font = Typeface.createFromAsset(context.getAssets(), "fonts/Hippie.otf");
paint.setTypeface(font);
paint.setTextSize(40);
List<Key> keys = getKeyboard().getKeys();
for(Key key: keys) { // int i = 0 ; switch(i) and implement your logic
if(key.pressed){
NinePatchDrawable npd = (NinePatchDrawable)context.getResources().getDrawable(R.drawable.glow);
npd.setBounds(key.x,key.y,key.x+key.width,key.y+key.height);
npd.draw(canvas);
if(key.label != null)
canvas.drawText(key.label.toString(), key.x + (key.width/2), key.y + 25, paint);
}else if(key.modifier){ // boolean that defines key is function key
NinePatchDrawable npd = (NinePatchDrawable)context.getResources().getDrawable(R.drawable.btn_keyboard_special);
npd.setBounds(key.x,key.y,key.x+key.width,key.y+key.height);
npd.draw(canvas);
if(key.label != null)
canvas.drawText(key.label.toString(), key.x + (key.width/2), key.y + 25, paint);
}
break;
}
}
来源：https://stackoverflow.com/questions/18224520/how-to-set-different-background-of-keys-for-android-custom-keyboard