Created
August 2, 2019 17:27
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public class CViewN extends View { | |
int width; | |
int height; | |
int gapV; | |
int x; | |
int y; | |
Paint vaweP; | |
Paint cPaint1; | |
Paint cPaint2; | |
Paint cPaint3; | |
Paint cPaint4; | |
int alpha = 0; | |
RectF rectCircle; | |
float initialRadius; | |
float radiusOffset; | |
ValueAnimator anim = ValueAnimator.ofFloat(0, 35); | |
int mActivePointerId = MotionEvent.INVALID_POINTER_ID; | |
float mLastTouchX; | |
float mLastTouchY; | |
float mPosX = 0f; | |
float mPosY = 0f; | |
@Override | |
public boolean onTouchEvent(MotionEvent ev){ | |
final int action = ev.getActionMasked(); | |
switch (action){ | |
case MotionEvent.ACTION_DOWN: | |
{ | |
final int pointerIndex = ev.getActionIndex(); | |
final float x = ev.getX(pointerIndex); | |
final float y = ev.getY(pointerIndex); | |
// Remember where we started (for dragging) | |
mLastTouchX = x; | |
mLastTouchY = y; | |
mActivePointerId = ev.getPointerId(pointerIndex); | |
break; | |
} | |
case MotionEvent.ACTION_MOVE: | |
{ | |
// Find the index of the active pointer and fetch its position | |
final int pointerIndex = ev.findPointerIndex(mActivePointerId); | |
final float x = ev.getX(pointerIndex); | |
final float y = ev.getY(pointerIndex); | |
// Calculate the distance moved | |
final float dx = x - mLastTouchX; | |
final float dy = y - mLastTouchY; | |
mPosX += dx; | |
mPosY += dy; | |
// Remember this touch position for the next move event | |
mLastTouchX = x; | |
mLastTouchY = y; | |
invalidate(); | |
break; | |
} | |
case MotionEvent.ACTION_UP: | |
{ | |
mActivePointerId = MotionEvent.INVALID_POINTER_ID; | |
break; | |
} | |
case MotionEvent.ACTION_CANCEL: | |
{ | |
mActivePointerId = MotionEvent.INVALID_POINTER_ID; | |
break; | |
} | |
case MotionEvent.ACTION_POINTER_UP: | |
{ | |
final int pointerIndex = ev.getActionIndex(); | |
final int pointerId = ev.getPointerId(pointerIndex); | |
if(pointerId == mActivePointerId){ | |
// This was our active pointer going up. Choose a new | |
// active pointer and adjust accordingly. | |
final int newPointerIndex = pointerIndex == 0 ? 1 : 0; | |
mLastTouchX = ev.getX(newPointerIndex); | |
mLastTouchY = ev.getY(newPointerIndex); | |
mActivePointerId = ev.getPointerId(newPointerIndex); | |
} | |
break; | |
} | |
} | |
return true; | |
} | |
public CViewN(Context context){ | |
//this(context, null, 0); | |
super(context); | |
} | |
public CViewN(Context context, AttributeSet attrs){ | |
//this(context, attrs, 0); | |
super(context, attrs); | |
init(context, attrs); | |
} | |
public CViewN(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { | |
super(context, attrs, defStyleAttr); | |
init(context, attrs); | |
} | |
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) | |
public CViewN(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes){ | |
super(context, attrs, defStyleAttr, defStyleRes); | |
init(context, attrs); | |
} | |
@Override | |
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){ | |
int widthSize = MeasureSpec.getSize(widthMeasureSpec); | |
int heightSize = MeasureSpec.getSize(heightMeasureSpec); | |
int widthMode = MeasureSpec.getMode(widthMeasureSpec); | |
int heightMode = MeasureSpec.getMode(heightMeasureSpec); | |
int desiredWidth = 1000; | |
int desiredHeight = 1500; | |
int width; | |
int height; | |
//width | |
if(widthMode == MeasureSpec.EXACTLY){ | |
//Must be this size | |
width = widthSize; | |
}else if(widthMode == MeasureSpec.AT_MOST){ | |
//Can't be bigger than... | |
width = Math.min(widthSize, desiredWidth); | |
}else{ | |
//Be whatever you want | |
width = desiredWidth; | |
} | |
//height | |
if(heightMode == MeasureSpec.EXACTLY){ | |
//Must be this size | |
height = heightSize; | |
}else if | |
(heightMode == MeasureSpec.AT_MOST){ | |
//Can't be bigger than... | |
height = Math.min(heightSize, desiredHeight); | |
}else{ | |
//Be whatever you want | |
height = desiredHeight; | |
} | |
//MUST CALL THIS | |
setMeasuredDimension(width, height); | |
} | |
@Override | |
protected void onSizeChanged(int w, int h, int oldw, int oldh) { | |
super.onSizeChanged(w, h, oldw, oldh); | |
width = w; | |
height = h; | |
x = width/2; | |
y = height/2; | |
} | |
protected void init(Context context, @Nullable AttributeSet attrs) { | |
vaweP = new Paint(Paint.ANTI_ALIAS_FLAG); | |
vaweP.setStyle(Paint.Style.STROKE); | |
vaweP.setColor(Color.RED); | |
vaweP.setStrokeWidth(5); | |
gapV = 30; | |
} | |
@Override | |
protected void onAttachedToWindow(){ | |
super.onAttachedToWindow(); | |
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { | |
@Override | |
public void onAnimationUpdate(ValueAnimator valueAnimator) { | |
radiusOffset = (float) valueAnimator.getAnimatedValue(); | |
alpha = (int) ((float) valueAnimator.getAnimatedValue()); | |
invalidate(); | |
} | |
}); | |
anim.setDuration(1000); | |
anim.setInterpolator(new LinearInterpolator()); | |
anim.setRepeatMode(ValueAnimator.RESTART); | |
anim.setRepeatCount(ValueAnimator.INFINITE); | |
anim.start(); | |
} | |
@Override | |
protected void onDraw(Canvas canvas) { | |
super.onDraw(canvas); | |
/* float currentRadius; | |
currentRadius = initialRadius; | |
while (currentRadius < (width/2)) { | |
canvas.drawCircle(x, y, currentRadius, vaweP); | |
currentRadius += gapV; | |
}*/ | |
float radius = initialRadius + radiusOffset + mPosY; | |
for(int i = 0; i < 10;i++ ){ | |
canvas.drawCircle(x, y, radius, vaweP); | |
radius = radius + 35; | |
} | |
rectCircle = new RectF(0,0, width, height); | |
cPaint1 = new Paint(Paint.ANTI_ALIAS_FLAG); | |
cPaint1.setColor(Color.GREEN); | |
cPaint1.setAlpha(30); | |
cPaint2 = new Paint(Paint.ANTI_ALIAS_FLAG); | |
cPaint2.setColor(Color.RED); | |
cPaint2.setAlpha(30); | |
cPaint3 = new Paint(Paint.ANTI_ALIAS_FLAG); | |
cPaint3.setColor(Color.BLUE); | |
cPaint3.setAlpha(30); | |
cPaint4 = new Paint(Paint.ANTI_ALIAS_FLAG); | |
cPaint4.setColor(Color.YELLOW); | |
cPaint4.setAlpha(30); | |
//canvas.drawRoundRect(rectCircle, 10, 10, cPaint); | |
canvas.drawArc(rectCircle, alpha, 90, true, cPaint1); | |
canvas.drawArc(rectCircle, alpha + 90, 90, true, cPaint2); | |
canvas.drawArc(rectCircle, alpha + 180, 90, true, cPaint3); | |
canvas.drawArc(rectCircle, alpha + 270, 90, true, cPaint4); | |
} | |
} |
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