自定义解锁滑动按钮

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? ?实现滑动解锁按钮，附带按钮滑动音效。

public class SlidingButton extends Button {float offset;public SlidingButton(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}public SlidingButton(Context context) {super(context);}private boolean isMe = false;private int limit = 302;public int getLimit() {return limit;}public void setLimit(int limit) {this.limit = limit;}public boolean isMe() {return isMe;}public void setMe(boolean isMe) {this.isMe = isMe;}public SlidingButton(Context context, AttributeSet attrs) {super(context, attrs);}@Overridepublic boolean onTouchEvent(MotionEvent event) {if (event.getAction() == MotionEvent.ACTION_DOWN) {offset = event.getX();isMe = true;} else if (event.getAction() == MotionEvent.ACTION_UP) {isMe = false;}return false;}public boolean handleActivityEvent(MotionEvent activityEvent) {boolean result = false;if (isMe()) {if (activityEvent.getAction() == MotionEvent.ACTION_UP) {int newX = (int) activityEvent.getX();if (newX < getLimit() && newX > 100) {LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) getLayoutParams();TranslateAnimation trans = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0, Animation.ABSOLUTE,-lp.leftMargin, Animation.RELATIVE_TO_SELF, 0,Animation.RELATIVE_TO_SELF, 0);trans.setStartOffset(0);trans.setDuration(500);trans.setFillBefore(true);trans.setAnimationListener(new SlidingAnimationListener(this));startAnimation(trans);} else if (newX > getLimit()) {//SoundPlayer.getInstance().play(SoundPlayer.SLIDE);LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) getLayoutParams();lp.leftMargin = 0;setLayoutParams(lp);isMe = false;//用户完成了选择动作result = true;}} else {// 还在拖动LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) getLayoutParams();lp.leftMargin = (int) (activityEvent.getX() - offset-5);System.out.println(lp.leftMargin);if (lp.leftMargin > 0 && lp.leftMargin < (367-149)) {setLayoutParams(lp);}}}return result;}private static class SlidingAnimationListener implements AnimationListener {private SlidingButton but;public SlidingAnimationListener(SlidingButton button) {this.but = button;}@Overridepublic void onAnimationEnd(Animation animation) {rePosition();but.setMe(false);}private void rePosition() {LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) but.getLayoutParams();lp.leftMargin = 0;but.setLayoutParams(lp);}@Overridepublic void onAnimationRepeat(Animation animation) {// TODO Auto-generated method stub}@Overridepublic void onAnimationStart(Animation animation) {// TODO Auto-generated method stub}}}

public class SoundPlayer {public static int BTN;public static int LOOP;private SoundPool soundPool;private int loopStreamId;private static SoundPlayer instance;public static SoundPlayer getInstance() {synchronized (SoundPlayer.class) {if (instance == null) {instance = new SoundPlayer();}}return instance;}// 单例private SoundPlayer() {soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);}public void loadSound(Context context) {BTN = soundPool.load(context, R.raw.button, 1);LOOP = soundPool.load(context, R.raw.loop, 1);}public void play(int soundId) {if (soundId == LOOP) {// 循环播放soundPool.stop(loopStreamId);loopStreamId = soundPool.play(soundId, 1f, 1f, 1, -1, 1f);} else {// 只播放一次soundPool.play(soundId, 1f, 1f, 1, 0, 1f);}}public void stop() {soundPool.stop(loopStreamId);}}
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