自定義SlideSwitch(開關控制元件)
阿新 • • 發佈:2019-02-20
實現效果:
定義樣式:
<declare-styleable name="slideswitch"> <attr name="themeColor" format="color" /> <attr name="isOpen" format="boolean" /> <attr name="shape"> <enum name="rect" value="1" /> <enum name="circle" value="2" /> </attr> </declare-styleable>
使用方式: 在佈局檔案中 預設是關閉
<com.example.tuhuadmin.truekeystore.views.SlideSwitch android:id="@+id/setting_wiff" android:layout_width="50dp" android:layout_height="30dp" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_marginRight="10dp" slideswitch:isOpen="false" slideswitch:shape="rect" slideswitch:themeColor="#e83d40" />
在activity中的使用
mSettingWiff = (SlideSwitch) findViewById(R.id.setting_wiff); //進入頁面時,首先獲取wifi的狀態 String wifionoff = SPUtils.getString(SettingsActivity.this, "wifionoff", "0", "wifi"); if (wifionoff.equals("0")) { mSettingWiff.setState(true); } else if (wifionoff.equals("1")) { mSettingWiff.setState(false); } //---------------------------------------------------- //設定拖拽監聽 mSettingWiff.setSlideListener(new SlideSwitch.SlideListener() { @Override public void open() { //開啟狀態 使用首選項進行儲存 SPUtils.setString(SettingsActivity.this, "wifionoff", "0", "wifi"); } @Override public void close() { //關閉狀態 SPUtils.setString(SettingsActivity.this, "wifionoff", "0", "wifi"); } });
自定義控制元件
package com.example.tuhuadmin.truekeystore.views;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.os.Bundle;
import android.os.Looper;
import android.os.Parcelable;
import android.support.v4.view.MotionEventCompat;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import com.example.tuhuadmin.truekeystore.R;
/**
* Created by on 2016/7/5.
* PackageName:com.example.tuhuadmin.truekeystore.views
* Author:crs
*/
public class SlideSwitch extends View {
public static final int SHAPE_RECT = 1;
public static final int SHAPE_CIRCLE = 2;
private static final int RIM_SIZE = 6;
private static final int DEFAULT_ROUND_RADIO = 20;
private static final int DEFAULT_ROUND_COLOR = Color.parseColor("#eeeeee");
private static final int DEFAULT_COLOR_THEME = Color.parseColor("#e83d40");
// 3 attributes
private int color_theme;
private boolean isOpen;
private int shape;
// varials of drawing
private Paint paint;
// private Paint paintb;
private RectF backRect;
private RectF frontRect;
private RectF frontCircleRect;
private RectF backCircleRect;
private int alpha;
private int max_left;
private int min_left;
private float frontRect_left;
private float frontRect_left_begin = RIM_SIZE;
private int eventStartX;
private int eventLastX;
private int diffX = 0;
private boolean slideable = true;
private SlideListener listener;
public interface SlideListener {
public void open();
public void close();
}
public SlideSwitch(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
listener = null;
paint = new Paint();
paint.setAntiAlias(true);
paint.setStyle(Paint.Style.FILL);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.slideswitch);
color_theme = a.getColor(R.styleable.slideswitch_themeColor, DEFAULT_COLOR_THEME);
isOpen = a.getBoolean(R.styleable.slideswitch_isOpen, false);
shape = a.getInt(R.styleable.slideswitch_shape, SHAPE_RECT);
a.recycle();
}
public SlideSwitch(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SlideSwitch(Context context) {
this(context, null);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = measureDimension(280, widthMeasureSpec);
int height = measureDimension(140, heightMeasureSpec);
if (shape == SHAPE_CIRCLE) {
if (width < height)
width = height * 2;
}
setMeasuredDimension(width, height);
initDrawingVal();
}
public void initDrawingVal() {
int width = getMeasuredWidth();
int height = getMeasuredHeight();
backCircleRect = new RectF();
frontCircleRect = new RectF();
frontRect = new RectF();
backRect = new RectF(0, 0, width, height);
min_left = RIM_SIZE;
if (shape == SHAPE_RECT)
max_left = width / 2;
else
max_left = width - (height - 2 * RIM_SIZE) - RIM_SIZE;
if (isOpen) {
frontRect_left = max_left;
alpha = 255;
} else {
frontRect_left = RIM_SIZE;
alpha = 0;
}
frontRect_left_begin = frontRect_left;
}
public int measureDimension(int defaultSize, int measureSpec) {
int result;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
result = specSize;
} else {
result = defaultSize; // UNSPECIFIED
if (specMode == MeasureSpec.AT_MOST) {
result = Math.min(result, specSize);
}
}
return result;
}
@Override
protected void onDraw(Canvas canvas) {
if (shape == SHAPE_RECT) {
paint.setColor(DEFAULT_ROUND_COLOR);
canvas.drawRoundRect(backRect, DEFAULT_ROUND_RADIO, DEFAULT_ROUND_RADIO, paint);
paint.setColor(alpha <= 20 ? DEFAULT_ROUND_COLOR : color_theme);
paint.setAlpha(alpha);
canvas.drawRoundRect(backRect, DEFAULT_ROUND_RADIO, DEFAULT_ROUND_RADIO, paint);
frontRect.set(frontRect_left, RIM_SIZE, frontRect_left
+ getMeasuredWidth() / 2 - RIM_SIZE, getMeasuredHeight()
- RIM_SIZE);
paint.setColor(Color.WHITE);
canvas.drawRoundRect(frontRect, DEFAULT_ROUND_RADIO, DEFAULT_ROUND_RADIO, paint);
} else {
// draw circle
float radius;
radius = backRect.height() / 2 - RIM_SIZE;
paint.setColor(DEFAULT_ROUND_COLOR);
backCircleRect.set(backRect);
canvas.drawRoundRect(backCircleRect, radius, radius, paint);
paint.setColor(alpha <= 20 ? DEFAULT_ROUND_COLOR : color_theme);
paint.setAlpha(alpha);
canvas.drawRoundRect(backCircleRect, radius, radius, paint);
frontRect.set(frontRect_left, RIM_SIZE, frontRect_left
+ backRect.height() - 2 * RIM_SIZE, backRect.height()
- RIM_SIZE);
frontCircleRect.set(frontRect);
paint.setColor(Color.WHITE);
canvas.drawRoundRect(frontCircleRect, radius, radius, paint);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (slideable == false)
return super.onTouchEvent(event);
int action = MotionEventCompat.getActionMasked(event);
switch (action) {
case MotionEvent.ACTION_DOWN:
eventStartX = (int) event.getRawX();
break;
case MotionEvent.ACTION_MOVE:
eventLastX = (int) event.getRawX();
diffX = eventLastX - eventStartX;
float tempX = diffX + frontRect_left_begin;
tempX = (tempX > max_left ? max_left : tempX);
tempX = (tempX < min_left ? min_left : tempX);
if (tempX >= min_left && tempX <= max_left) {
frontRect_left = tempX;
alpha = (int) (255 * (float) tempX / (float) max_left);
invalidateView();
}
break;
case MotionEvent.ACTION_UP:
int wholeX = (int) (event.getRawX() - eventStartX);
frontRect_left_begin = frontRect_left;
boolean toRight;
toRight = (frontRect_left_begin > max_left / 2 ? true : false);
if (Math.abs(wholeX) < 3) {
toRight = !toRight;
}
moveToDest(toRight);
break;
default:
break;
}
return true;
}
/**
* draw again
*/
private void invalidateView() {
if (Looper.getMainLooper() == Looper.myLooper()) {
invalidate();
} else {
postInvalidate();
}
}
public void setSlideListener(SlideListener listener) {
this.listener = listener;
}
public void moveToDest(final boolean toRight) {
ValueAnimator toDestAnim = ValueAnimator.ofFloat(frontRect_left,
toRight ? max_left : min_left);
toDestAnim.setDuration(500);
toDestAnim.setInterpolator(new AccelerateDecelerateInterpolator());
toDestAnim.start();
toDestAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
frontRect_left = (Float) animation.getAnimatedValue();
alpha = (int) (255 * (float) frontRect_left / (float) max_left);
invalidateView();
}
});
toDestAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (toRight) {
isOpen = true;
if (listener != null)
listener.open();
frontRect_left_begin = max_left;
} else {
isOpen = false;
if (listener != null)
listener.close();
frontRect_left_begin = min_left;
}
}
});
}
public void setState(boolean isOpen) {
this.isOpen = isOpen;
initDrawingVal();
invalidateView();
if (listener != null)
if (isOpen == true) {
listener.open();
} else {
listener.close();
}
}
public void setShapeType(int shapeType) {
this.shape = shapeType;
}
public void setSlideable(boolean slideable) {
this.slideable = slideable;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state instanceof Bundle) {
Bundle bundle = (Bundle) state;
this.isOpen = bundle.getBoolean("isOpen");
state = bundle.getParcelable("instanceState");
}
super.onRestoreInstanceState(state);
}
@Override
protected Parcelable onSaveInstanceState() {
Bundle bundle = new Bundle();
bundle.putParcelable("instanceState", super.onSaveInstanceState());
bundle.putBoolean("isOpen", this.isOpen);
return bundle;
}
}