Android 自定义SeekBar显示进度百分比

发布于:2024-06-20 ⋅ 阅读:(196) ⋅ 点赞:(0)

}

// Set atributtes of XML to View

protected void setAttributes(AttributeSet attrs) {

setBackgroundResource(R.drawable.background_transparent);

// Set size of view

setMinimumHeight(Utils.dpToPx(48, getResources()));

setMinimumWidth(Utils.dpToPx(80, getResources()));

// Set background Color

// Color by resource

int bacgroundColor = attrs.getAttributeResourceValue(ANDROIDXML,

“background”, -1);

if (bacgroundColor != -1) {

setBackgroundColor(getResources().getColor(bacgroundColor));

} else {

// Color by hexadecimal

int background = attrs.getAttributeIntValue(ANDROIDXML,

“background”, -1);

if (background != -1)

setBackgroundColor(background);

}

showNumberIndicator = attrs.getAttributeBooleanValue(MATERIALDESIGNXML,

“showNumberIndicator”, false);

min = attrs.getAttributeIntValue(MATERIALDESIGNXML, “min”, 0);

max = attrs.getAttributeIntValue(MATERIALDESIGNXML, “max”, 0);

value = attrs.getAttributeIntValue(MATERIALDESIGNXML, “value”, min);

ball = new Ball(getContext());

RelativeLayout.LayoutParams params = new LayoutParams(Utils.dpToPx(20,

getResources()), Utils.dpToPx(20, getResources()));

params.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);

ball.setLayoutParams(params);

addView(ball);

// Set if slider content number indicator

// TODO

if (showNumberIndicator) {

numberIndicator = new NumberIndicator(getContext());

}

}

@Override

public void invalidate() {

ball.invalidate();

super.invalidate();

}

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

if (!placedBall)

placeBall();

if (value == min) {

// Crop line to transparent effect

Bitmap bitmap = Bitmap.createBitmap(canvas.getWidth(),

canvas.getHeight(), Bitmap.Config.ARGB_8888);

Canvas temp = new Canvas(bitmap);

Paint paint = new Paint();

paint.setColor(Color.parseColor(“#B0B0B0”));

paint.setStrokeWidth(Utils.dpToPx(2, getResources()));

temp.drawLine(getHeight() / 2, getHeight() / 2, getWidth()

  • getHeight() / 2, getHeight() / 2, paint);

Paint transparentPaint = new Paint();

transparentPaint.setColor(getResources().getColor(

android.R.color.transparent));

transparentPaint.setXfermode(new PorterDuffXfermode(

PorterDuff.Mode.CLEAR));

temp.drawCircle(ViewHelper.getX(ball) + ball.getWidth() / 2,

ViewHelper.getY(ball) + ball.getHeight() / 2,

ball.getWidth() / 2, transparentPaint);

canvas.drawBitmap(bitmap, 0, 0, new Paint());

} else {

Paint paint = new Paint();

paint.setColor(Color.parseColor(“#B0B0B0”));

paint.setStrokeWidth(Utils.dpToPx(2, getResources()));

canvas.drawLine(getHeight() / 2, getHeight() / 2, getWidth()

  • getHeight() / 2, getHeight() / 2, paint);

paint.setColor(backgroundColor);

float division = (ball.xFin - ball.xIni) / (max - min);

int value = this.value - min;

canvas.drawLine(getHeight() / 2, getHeight() / 2, value * division

  • getHeight() / 2, getHeight() / 2, paint);

}

if (press && !showNumberIndicator) {

Paint paint = new Paint();

paint.setColor(backgroundColor);

paint.setAntiAlias(true);

canvas.drawCircle(ViewHelper.getX(ball) + ball.getWidth() / 2,

getHeight() / 2, getHeight() / 3, paint);

}

invalidate();

}

@Override

public boolean onTouchEvent(MotionEvent event) {

isLastTouch = true;

if (isEnabled()) {

if (event.getAction() == MotionEvent.ACTION_DOWN

|| event.getAction() == MotionEvent.ACTION_MOVE) {

if (numberIndicator != null

&& numberIndicator.isShowing() == false)

numberIndicator.show();

if ((event.getX() <= getWidth() && event.getX() >= 0)) {

press = true;

// calculate value

int newValue = 0;

float division = (ball.xFin - ball.xIni) / (max - min);

if (event.getX() > ball.xFin) {

newValue = max;

} else if (event.getX() < ball.xIni) {

newValue = min;

} else {

newValue = min

  • (int) ((event.getX() - ball.xIni) / division);

}

if (value != newValue) {

value = newValue;

if (onValueChangedListener != null)

onValueChangedListener.onValueChanged(newValue);

}

// move ball indicator

float x = event.getX();

x = (x < ball.xIni) ? ball.xIni : x;

x = (x > ball.xFin) ? ball.xFin : x;

ViewHelper.setX(ball, x);

ball.changeBackground();

// If slider has number indicator

if (numberIndicator != null) {

// move number indicator

numberIndicator.indicator.x = x;

numberIndicator.indicator.finalY = Utils

.getRelativeTop(this) - getHeight() / 2;

numberIndicator.indicator.finalSize = getHeight() / 2;

numberIndicator.numberIndicator.setText(“”);

}

} else {

press = false;

isLastTouch = false;

if (numberIndicator != null)

numberIndicator.dismiss();

}

} else if (event.getAction() == MotionEvent.ACTION_UP

|| event.getAction() == MotionEvent.ACTION_CANCEL) {

if (numberIndicator != null)

numberIndicator.dismiss();

isLastTouch = false;

press = false;

}

}

return true;

}

/**

  • Make a dark color to press effect

  • @return

*/

protected int makePressColor() {

int r = (this.backgroundColor >> 16) & 0xFF;

int g = (this.backgroundColor >> 8) & 0xFF;

int b = (this.backgroundColor >> 0) & 0xFF;

r = (r - 30 < 0) ? 0 : r - 30;

g = (g - 30 < 0) ? 0 : g - 30;

b = (b - 30 < 0) ? 0 : b - 30;

return Color.argb(70, r, g, b);

}

private void placeBall() {

ViewHelper.setX(ball, getHeight() / 2 - ball.getWidth() / 2);

ball.xIni = ViewHelper.getX(ball);

ball.xFin = getWidth() - getHeight() / 2 - ball.getWidth() / 2;

ball.xCen = getWidth() / 2 - ball.getWidth() / 2;

placedBall = true;

}

// GETERS & SETTERS

public OnValueChangedListener getOnValueChangedListener() {

return onValueChangedListener;

}

public void setOnValueChangedListener(

OnValueChangedListener onValueChangedListener) {

this.onValueChangedListener = onValueChangedListener;

}

public int getValue() {

return value;

}

public void setValue(final int value) {

if (placedBall == false)

post(new Runnable() {

@Override

public void run() {

setValue(value);

}

});

else {

this.value = value;

float division = (ball.xFin - ball.xIni) / max;

ViewHelper.setX(ball,

value * division + getHeight() / 2 - ball.getWidth() / 2);

ball.changeBackground();

}

}

public int getMax() {

return max;

}

public void setMax(int max) {

this.max = max;

}

public int getMin() {

return min;

}

public void setMin(int min) {

this.min = min;

}

public boolean isShowNumberIndicator() {

return showNumberIndicator;

}

public void setShowNumberIndicator(boolean showNumberIndicator) {

this.showNumberIndicator = showNumberIndicator;

numberIndicator = (showNumberIndicator) ? new NumberIndicator(

getContext()) : null;

}

@Override

public void setBackgroundColor(int color) {

backgroundColor = color;

if (isEnabled())

beforeBackground = backgroundColor;

}

boolean placedBall = false;

class Ball extends View {

float xIni, xFin, xCen;

public Ball(Context context) {

super(context);

setBackgroundResource(R.drawable.background_switch_ball_uncheck);

}

public void changeBackground() {

if (value != min) {

setBackgroundResource(R.drawable.background_checkbox);

LayerDrawable layer = (LayerDrawable) getBackground();

GradientDrawable shape = (GradientDrawable) layer

.findDrawableByLayerId(R.id.shape_bacground);

shape.setColor(backgroundColor);

} else {

setBackgroundResource(R.drawable.background_switch_ball_uncheck);

}

}

}

// Slider Number Indicator

class NumberIndicator extends Dialog {

Indicator indicator;

TextView numberIndicator;

public NumberIndicator(Context context) {

super(context, android.R.style.Theme_Translucent);

}

@Override

protected void onCreate(Bundle savedInstanceState) {

requestWindowFeature(Window.FEATURE_NO_TITLE);

super.onCreate(savedInstanceState);

setContentView(R.layout.number_indicator_spinner);

setCanceledOnTouchOutside(false);

RelativeLayout content = (RelativeLayout) this

.findViewById(R.id.number_indicator_spinner_content);

indicator = new Indicator(this.getContext());

content.addView(indicator);

numberIndicator = new TextView(getContext());

numberIndicator.setTextColor(Color.WHITE);

numberIndicator.setGravity(Gravity.CENTER);

conte
nt.addView(numberIndicator);

indicator.setLayoutParams(new RelativeLayout.LayoutParams(

RelativeLayout.LayoutParams.FILL_PARENT,

RelativeLayout.LayoutParams.FILL_PARENT));

}

@Override

public void dismiss() {