Ich habe eine vertikale Seekbar in meinem Android-Projekt. Vertikal SeekBar wird in onCreate Methode initialisiert:Warum gibt OnSeekBarChangeListener immer die boolesche Variable false zurück?
verticalSeekBar1 = (VerticalSeekBar) findViewById(R.id.verticalSeekbar1);
verticalSeekBar1.setOnSeekBarChangeListener(Listener1);
Und ich habe OnSeekBarChangeListener Schnittstelle zu implementieren, wie unten
gezeigtprivate SeekBar.OnSeekBarChangeListener Listener1 = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar arg0, int seekBarLevel, boolean changedByUser) {
verticalSeekBar1.setProgress(seekBarLevel);
Log.e(TAG, "onProgressChanged: UserChnagedSeekbar :: "+changedByUser);
if (changedBySpinner){
mSpinner.setSelection(0);
}
}
@Override
public void onStartTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
};
changedByUser ist immer false zurück. Ob ich Seekbar wechselte oder nicht. Bitte helfen Sie mir, dieses Problem zu lösen. Vielen Dank im Voraus.
My Custom Vertical SeekBar Klasse Code ist
public class VerticalSeekBar extends SeekBar {
private Context mContext;
public VerticalSeekBar(Context context) {
super(context);
init(context);
}
public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}
public VerticalSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
private void init(Context context){
mContext=context;
}
protected void onSizeChanged(int w, int h, int oldWidth, int oldHeight) {
super.onSizeChanged(h, w, oldh, oldw);
}
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
protected void onDraw(Canvas c) {
Paint paint=new Paint();
paint.setColor(Color.DKGRAY);
paint.setStrokeWidth(2.0f);
Rect rect=new Rect(0,0,getMeasuredWidth(),getMeasuredHeight());
//c.drawRect(rect,paint);
int vWidth=getMeasuredWidth();
int vHeight=getMeasuredHeight();
float startPointY=83;
float middlePointY = (vHeight)/2;
float lastPointY=vHeight-83;
paint.setColor(Color.DKGRAY);
c.drawLine(rect.left,startPointY,rect.centerX(),startPointY,paint);
c.drawLine(rect.left,middlePointY,rect.centerX(),middlePointY,paint);
c.drawLine(rect.left,lastPointY,rect.centerX(),lastPointY,paint);
paint.setColor(Color.DKGRAY);
float x=((vHeight/2)-startPointY)/3;
float f10dbPoint=x+startPointY;
float f5dbPoint=(2*x)+startPointY;
float fm5dbPoint=(vHeight/2)+x;
float fm10dbPoint=(vHeight/2)+(2*x);
float startX=rect.left+32;
c.drawLine(startX,f10dbPoint,rect.centerX(),f10dbPoint,paint);
c.drawLine(startX,f5dbPoint,rect.centerX(),f5dbPoint,paint);
c.drawLine(startX,fm5dbPoint,rect.centerX(),fm5dbPoint,paint);
c.drawLine(startX,fm10dbPoint,rect.centerX(),fm10dbPoint,paint);
c.rotate(-90);
c.translate(-getHeight(),0);
super.onDraw(c);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabled()) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
int i=0;
i=getMax() - (int) (getMax() * event.getY()/getHeight());
setProgress(i);
Log.i("Progress",getProgress()+"");
onSizeChanged(getWidth(), getHeight(), 0, 0);
break;
case MotionEvent.ACTION_CANCEL:
break;
}
return true;
}
public void updateThumb(){
onSizeChanged(getWidth(), getHeight(), 0, 0);
}
}