Hi,
I would like to create a custom button and make it interactive by
adding a click or touch listener.
I created a RoundButton class the following way:
public class RoundButton extends View {
private String buttonText;
private static final int buttonRadius = 36;
private static final float textSize = 16;
private int px;
private int py;
private int buttonState;
private int textHeight;
private Paint circlePaint;
private Paint textPaint;
public void SetPosition(int px, int py)
{
this.px = px;
this.py = py;
}
@Override
protected void onDraw(Canvas canvas) {
if(px == 0 || py == 0)
{
px = 50;
py = 50;
}
//int radius = Math.min(px, py);
canvas.drawCircle(px, py, buttonRadius, circlePaint);
canvas.save();
int textWidth = (int)textPaint.measureText(buttonText);
int cardinalX = px - textWidth/2;
int cardinalY = py - textHeight/2;
canvas.drawText(buttonText, cardinalX, cardinalY, textPaint);
canvas.restore();
//super.onDraw(canvas);
}
@Override
protected void onMeasure(int widthMeasureSpec, int
heightMeasureSpec) {
int measuredWidth = measure(widthMeasureSpec);
int measuredHeight = measure(heightMeasureSpec);
int d = Math.min(measuredWidth, measuredHeight);
setMeasuredDimension(d, d);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
private int measure(int measureSpec)
{
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if(specMode == MeasureSpec.UNSPECIFIED)
{
result = 200;
}
else
{
result = specSize;
}
return result;
}
public RoundButton(Context context) {
super(context);
initRoundButton();
}
public RoundButton(Context context, AttributeSet attrs)
{
super(context, attrs);
initRoundButton();
}
protected void initRoundButton()
{
setFocusable(true);
circlePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
circlePaint.setColor(R.color.roundButtonUpColor);
circlePaint.setStyle(Paint.Style.FILL_AND_STROKE);
Resources r = this.getResources();
textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
textPaint.setColor(r.getColor(R.color.roundButtonTextColor));
textPaint.setTextSize(textSize);
if(buttonText == null)
{
textHeight = (int)textPaint.measureText("Yy");
}
else
{
textHeight = (int)textPaint.measureText(buttonText);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
return super.onTouchEvent(event);
}
public void setButtonText(String buttonText) {
this.buttonText = buttonText;
}
public String getButtonText() {
return buttonText;
}
protected class ButtonState
{
public static final int BUTTON_STATE_READY = 0;
public static final int BUTTON_STATE_PRESSED = 1;
}
public void test()
{
int i = 0;
}
}
Then I added this custom view to the main layout and bound the control
the following way:
rbActionButton = (RoundButton)findViewById(R.id.actionButton);
rbActionButton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
onActionButton();
}
});
but the onClick() doesn't execute when I touch the button.
Any ideas what could be wrong here?
Thanks!
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