public class ToggleButton extends View {private SpringSystem springSystem;private Spring spring ;/** */private float radius;/** 開啟顏色*/private int onColor = Color.parseColor("#4ebb7f");/** 關閉顏色*/private int offBorderColor = Color.parseColor("#dadbda");/** 灰色帶顏色*/private int offColor = Color.parseColor("#ffffff");/** 手柄顏色*/private int spotColor = Color.parseColor("#ffffff");/** 邊框顏色*/private int borderColor = offBorderColor;/** 畫筆*/private Paint paint ;/** 開關狀態*/private boolean toggleOn = false;/** 邊框大小*/private int borderWidth = 2;/** 垂直中心*/private float centerY;/** 按鈕的開始和結束位置*/private float startX, endX;/** 手柄X位置的最小和最大值*/private float spotMinX, spotMaxX;/**手柄大小 */private int spotSize ;/** 手柄X位置*/private float spotX;/** 關閉時內部灰色帶高度*/private float offLineWidth;/** */private RectF rect = new RectF();/** 默認使用動畫*/private boolean defaultAnimate = true;/** 是否默認處于打開狀態*/private boolean isDefaultOn = false;private OnToggleChanged listener;private ToggleButton(Context context) {super(context);}public ToggleButton(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);setup(attrs);}public ToggleButton(Context context, AttributeSet attrs) {super(context, attrs);setup(attrs);}@Overrideprotected void onDetachedFromWindow() {super.onDetachedFromWindow();spring.removeListener(springListener);}public void onAttachedToWindow() {super.onAttachedToWindow();spring.addListener(springListener);}public void setup(AttributeSet attrs) {paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setStyle(Style.FILL);paint.setStrokeCap(Cap.ROUND);springSystem = SpringSystem.create();spring = springSystem.createSpring();spring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(50, 7));this.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {toggle(defaultAnimate);}});TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.ToggleButton);offBorderColor = typedArray.getColor(R.styleable.ToggleButton_tbOffBorderColor, offBorderColor);onColor = typedArray.getColor(R.styleable.ToggleButton_tbOnColor, onColor);spotColor = typedArray.getColor(R.styleable.ToggleButton_tbSpotColor, spotColor);offColor = typedArray.getColor(R.styleable.ToggleButton_tbOffColor, offColor);borderWidth = typedArray.getDimensionPixelSize(R.styleable.ToggleButton_tbBorderWidth, borderWidth);defaultAnimate = typedArray.getBoolean(R.styleable.ToggleButton_tbAnimate, defaultAnimate);isDefaultOn = typedArray.getBoolean(R.styleable.ToggleButton_tbAsDefaultOn, isDefaultOn);typedArray.recycle();borderColor = offBorderColor;if (isDefaultOn) {toggleOn();}}public void toggle() {toggle(true);}public void toggle(boolean animate) {toggleOn = !toggleOn;takeEffect(animate);if(listener != null){listener.onToggle(toggleOn);}}public void toggleOn() {setToggleOn();if(listener != null){listener.onToggle(toggleOn);}}public void toggleOff() {setToggleOff();if(listener != null){listener.onToggle(toggleOn);}}/*** 設置顯示成打開樣式，不會觸發toggle事件*/public void setToggleOn() {setToggleOn(true);}/*** @param animate asd*/public void setToggleOn(boolean animate){toggleOn = true;takeEffect(animate);}/*** 設置顯示成關閉樣式，不會觸發toggle事件*/public void setToggleOff() {setToggleOff(true);}public void setToggleOff(boolean animate) {toggleOn = false;takeEffect(animate);}private void takeEffect(boolean animate) {if(animate){spring.setEndValue(toggleOn ? 1 : 0);}else{//這里沒有調用spring，所以spring里的當前值沒有變更，這里要設置一下，同步兩邊的當前值spring.setCurrentValue(toggleOn ? 1 : 0);calculateEffect(toggleOn ? 1 : 0);}}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {final int widthMode = MeasureSpec.getMode(widthMeasureSpec);final int heightMode = MeasureSpec.getMode(heightMeasureSpec);int widthSize = MeasureSpec.getSize(widthMeasureSpec);int heightSize = MeasureSpec.getSize(heightMeasureSpec);Resources r = Resources.getSystem();if(widthMode == MeasureSpec.UNSPECIFIED || widthMode == MeasureSpec.AT_MOST){widthSize = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50, r.getDisplayMetrics());widthMeasureSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);}if(heightMode == MeasureSpec.UNSPECIFIED || heightSize == MeasureSpec.AT_MOST){heightSize = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 30, r.getDisplayMetrics());heightMeasureSpec = MeasureSpec.makeMeasureSpec(heightSize, MeasureSpec.EXACTLY);}super.onMeasure(widthMeasureSpec, heightMeasureSpec);}@Overrideprotected void onLayout(boolean changed, int left, int top, int right,int bottom) {super.onLayout(changed, left, top, right, bottom);final int width = getWidth();final int height = getHeight();radius = Math.min(width, height) * 0.5f;centerY = radius;startX = radius;endX = width - radius;spotMinX = startX + borderWidth;spotMaxX = endX - borderWidth;spotSize = height - 4 * borderWidth;spotX = toggleOn ? spotMaxX : spotMinX;offLineWidth = 0;}SimpleSpringListener springListener = new SimpleSpringListener(){@Overridepublic void onSpringUpdate(Spring spring) {final double value = spring.getCurrentValue();calculateEffect(value);}};private int clamp(int value, int low, int high) {return Math.min(Math.max(value, low), high);}@Overridepublic void draw(Canvas canvas) {//rect.set(0, 0, getWidth(), getHeight());paint.setColor(borderColor);canvas.drawRoundRect(rect, radius, radius, paint);if(offLineWidth > 0){final float cy = offLineWidth * 0.5f;rect.set(spotX - cy, centerY - cy, endX + cy, centerY + cy);paint.setColor(offColor);canvas.drawRoundRect(rect, cy, cy, paint);}rect.set(spotX - 1 - radius, centerY - radius, spotX + 1.1f + radius, centerY + radius);paint.setColor(borderColor);canvas.drawRoundRect(rect, radius, radius, paint);final float spotR = spotSize * 0.5f;rect.set(spotX - spotR, centerY - spotR, spotX + spotR, centerY + spotR);paint.setColor(spotColor);canvas.drawRoundRect(rect, spotR, spotR, paint);}/*** @param value*/private void calculateEffect(final double value) {final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);spotX = mapToggleX;float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);offLineWidth = mapOffLineWidth;final int fb = Color.blue(onColor);final int fr = Color.red(onColor);final int fg = Color.green(onColor);final int tb = Color.blue(offBorderColor);final int tr = Color.red(offBorderColor);final int tg = Color.green(offBorderColor);int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);sb = clamp(sb, 0, 255);sr = clamp(sr, 0, 255);sg = clamp(sg, 0, 255);borderColor = Color.rgb(sr, sg, sb);postInvalidate();}/*** @author ThinkPad**/public interface OnToggleChanged{/*** @param on = =*/public void onToggle(boolean on);}public void setOnToggleChanged(OnToggleChanged onToggleChanged) {listener = onToggleChanged;}public boolean isAnimate() {return defaultAnimate;}public void setAnimate(boolean animate) {this.defaultAnimate = animate;}}

<?xml version="1.0" encoding="utf-8"?><resources><declare-styleable name="ToggleButton"><attr name="tbBorderWidth" format="dimension"/><attr name="tbOffBorderColor" format="reference|color"/><attr name="tbOffColor" format="reference|color"/><attr name="tbOnColor" format="reference|color"/><attr name="tbSpotColor" format="reference|color"/><attr name="tbAnimate" format="reference|boolean"/><attr name="tbAsDefaultOn" format="reference|boolean"/></declare-styleable></resources>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"xmlns:toggle="http://schemas.android.com/apk/res-auto"android:orientation="vertical"><LinearLayoutandroid:layout_marginTop="10dp"android:layout_width="match_parent"android:gravity="center_horizontal"android:layout_height="wrap_content"><com.example.ekikousei.view.ToggleButtonandroid:id="@+id/mToggleButton01"android:layout_width="54dp"android:layout_height="30dp"></com.example.ekikousei.view.ToggleButton></LinearLayout><LinearLayoutandroid:layout_marginTop="10dp"android:layout_width="match_parent"android:gravity="center_horizontal"android:layout_height="wrap_content"><com.example.ekikousei.view.ToggleButtonandroid:id="@+id/mToggleButton02"android:layout_width="54dp"android:layout_height="30dp"toggle:tbBorderWidth="2dp"toggle:tbOffBorderColor="#000"toggle:tbOffColor="#ddd"toggle:tbOnColor="#f00"toggle:tbSpotColor="#00f"></com.example.ekikousei.view.ToggleButton></LinearLayout></LinearLayout>

public class MainActivity extends Activity {private ToggleButton mToggleButton01;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mToggleButton01 = (ToggleButton) findViewById(R.id.mToggleButton01);mToggleButton01.setOnToggleChanged(new ToggleButton.OnToggleChanged() {@Overridepublic void onToggle(boolean on) {if (on) {Toast.makeText(MainActivity.this, "打開", Toast.LENGTH_SHORT).show();}else {Toast.makeText(MainActivity.this, "默認關閉", Toast.LENGTH_SHORT).show();}}});}}