このリンクを使用して、2 つの親指で SeekBarを実装し、出力を得ました。
しかし、このシークバーには、親指 1と親指 2の交差を許可するという 1 つの問題があります。つまり、親指 1 の値が親指 2 の値よりも大きくなる可能性があります。これは、私の要件では許可されるべきではありません。
これを実現するには、次のコードでどのような変更を行う必要がありますか?
public class SeekBarWithTwoThumb extends ImageView {
private String TAG = this.getClass().getSimpleName();
private Bitmap thumb = BitmapFactory.decodeResource(getResources(),
R.drawable.leftthumb);
private int thumb1X, thumb2X;
private int thumb1Value, thumb2Value;
private int thumbY;
private Paint paint = new Paint();
private int selectedThumb;
private int thumbHalfWidth;
private SeekBarChangeListener scl;
public SeekBarWithTwoThumb(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public SeekBarWithTwoThumb(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SeekBarWithTwoThumb(Context context) {
super(context);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (getHeight() > 0)
init();
}
private void init() {
printLog("View Height =" + getHeight() + "\t\t Thumb Height :"
+ thumb.getHeight());
if (thumb.getHeight() > getHeight())
getLayoutParams().height = thumb.getHeight();
thumbY = (getHeight() / 2) - (thumb.getHeight() / 2);
printLog("View Height =" + getHeight() + "\t\t Thumb Height :"
+ thumb.getHeight() + "\t\t" + thumbY);
thumbHalfWidth = thumb.getWidth()/2;
thumb1X = thumbHalfWidth;
thumb2X = getWidth()/2 ;
invalidate();
}
public void setSeekBarChangeListener(SeekBarChangeListener scl){
this.scl = scl;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawBitmap(thumb, thumb1X - thumbHalfWidth, thumbY,
paint);
canvas.drawBitmap(thumb, thumb2X - thumbHalfWidth, thumbY,
paint);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int mx = (int) event.getX();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (mx >= thumb1X - thumbHalfWidth
&& mx <= thumb1X + thumbHalfWidth) {
selectedThumb = 1;
printLog("Select Thumb 1");
} else if (mx >= thumb2X - thumbHalfWidth
&& mx <= thumb2X + thumbHalfWidth) {
selectedThumb = 2;
printLog("Select Thumb 2");
}
break;
case MotionEvent.ACTION_MOVE:
printLog("Mouse Move : " + selectedThumb);
if (selectedThumb == 1) {
thumb1X = mx;
printLog("Move Thumb 1");
} else if (selectedThumb == 2) {
thumb2X = mx;
printLog("Move Thumb 2");
}
break;
case MotionEvent.ACTION_UP:
selectedThumb = 0;
break;
}
if(thumb1X < 0)
thumb1X = 0;
if(thumb2X < 0)
thumb2X = 0;
if(thumb1X > getWidth() )
thumb1X =getWidth() ;
if(thumb2X > getWidth() )
thumb2X =getWidth() ;
invalidate();
if(scl !=null){
calculateThumbValue();
scl.SeekBarValueChanged(thumb1Value,thumb2Value);
}
return true;
}
private void calculateThumbValue(){
thumb1Value = (100*(thumb1X))/(getWidth());
thumb2Value = (100*(thumb2X))/(getWidth());
}
private void printLog(String log){
Log.i(TAG, log);
}
interface SeekBarChangeListener{
void SeekBarValueChanged(int Thumb1Value,int Thumb2Value);
}
}
どんな助けでも感謝します。