Android 自定义View修炼-打造完美的自定义侧滑菜单/侧滑View控件(转)

//侧滑方向-从哪侧滑出
    public static enum Positon { LEFT, RIGHT } private Context mContext; private Activity mActivity; private Scroller mScroller = null; //侧滑菜单布局View private View mMenuView; //底部蒙层View private View mMaskView; private int mMenuWidth = 0; //屏幕宽度 private int mScreenWidth = 0; //是否在滑动中 private boolean mIsMoving = false; //显示登录界面与否 private boolean mShow = false; //滑动动画时间 private int mDuration = 600; //缺省侧滑方向为左 private Positon mPositon = Positon.LEFT;

**
     * 创建侧滑菜单View
     */
    public static XCSlideView create(Activity activity) {
        XCSlideView view = new XCSlideView(activity); return view; } /** * 创建侧滑菜单View */ public static XCSlideView create(Activity activity, Positon positon) { XCSlideView view = new XCSlideView(activity); view.mPositon = positon; return view; }

/**
     * 创建 蒙层View并添加到contentView中
     */
    private void attachToContentView(Activity activity, Positon positon) { mPositon = positon; ViewGroup contentFrameLayout = (ViewGroup) activity.findViewById(android.R.id.content); ViewGroup contentView = ((ViewGroup) contentFrameLayout.getChildAt(0)); mMaskView = new View(activity); mMaskView.setBackgroundColor(mContext.getResources().getColor(R.color.mask_color)); contentView.addView(mMaskView, contentView.getLayoutParams()); mMaskView.setVisibility(View.GONE); mMaskView.setClickable(true); mMaskView.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { if (isShow()) { dismiss(); } } }); }

/**
     * 设置侧滑菜单View，并添加到DectorView->LinearLayout->内容显示区域View中
     */
    public void setMenuView(Activity activity, View view) { mActivity = activity; mMenuView = view; LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); addView(mMenuView, params); mMenuView.post(new Runnable() { @Override public void run() { // TODO Auto-generated method stub mMenuWidth = mMenuView.getWidth(); switch (mPositon) { case LEFT: XCSlideView.this.scrollTo(mScreenWidth, 0); break; case RIGHT: XCSlideView.this.scrollTo(-mScreenWidth, 0); break; } } }); ViewGroup contentFrameLayout = (ViewGroup) activity.findViewById(android.R.id.content); ViewGroup contentView = contentFrameLayout; contentView.addView(this); FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) this.getLayoutParams(); switch (mPositon) { case LEFT: layoutParams.gravity = Gravity.LEFT; layoutParams.leftMargin = 0; break; case RIGHT: layoutParams.gravity = Gravity.RIGHT; layoutParams.rightMargin = 0; break; } TextView titleFrameLayout = (TextView) activity.findViewById(android.R.id.title); if( titleFrameLayout != null){ layoutParams.topMargin = DensityUtil.getStatusBarHeight(mContext); } int flags = mActivity.getWindow().getAttributes().flags; int flag = (flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); if(flag == WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS){ //说明状态栏使用沉浸式 layoutParams.topMargin = DensityUtil.getStatusBarHeight(mContext); } this.setLayoutParams(layoutParams); }

/**
     * 显示侧滑菜单View
     */
    public void show(){ if(isShow() && !mIsMoving) return; switch (mPositon) { case LEFT: startScroll(mMenuWidth, -mMenuWidth, mDuration); break; case RIGHT: startScroll(-mMenuWidth, mMenuWidth, mDuration); break; } switchMaskView(true); mShow = true; } /** * 蒙层显示开关 */ private void switchMaskView(boolean bShow){ if(bShow){ mMaskView.setVisibility(View.VISIBLE); Animation animation = new AlphaAnimation(0.0f, 1.0f); animation.setDuration(mDuration); mMaskView.startAnimation(animation); }else{ mMaskView.setVisibility(View.GONE); } } /** * 关闭侧滑菜单View */ public void dismiss() { // TODO Auto-generated method stub if(!isShow() && !mIsMoving) return; switch (mPositon) { case LEFT: startScroll(XCSlideView.this.getScrollX(), mMenuWidth, mDuration); break; case RIGHT: startScroll(XCSlideView.this.getScrollX(), -mMenuWidth, mDuration); break; } switchMaskView(false); mShow = false; } public boolean isShow(){ return mShow; } @Override public void computeScroll() { // TODO Auto-generated method stub if (mScroller.computeScrollOffset()) { scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); // 更新界面  postInvalidate(); mIsMoving = true; } else { mIsMoving = false; } super.computeScroll(); } /** * 拖动移动 */ public void startScroll(int startX, int dx,int duration){ mIsMoving = true; mScroller.startScroll(startX,0,dx,0,duration); invalidate(); }

private XCSlideView mSlideViewLeft;
//屏幕宽度
private int mScreenWidth = 0; View menuViewLeft = LayoutInflater.from(mContext).inflate(R.layout.layout_slideview,null); mSlideViewLeft = XCSlideView.create(this, XCSlideView.Positon.LEFT); mSlideViewLeft.setMenuView(MainActivity.this, menuViewLeft); mSlideViewLeft.setMenuWidth(mScreenWidth * 7 / 9); Button left = (Button)findViewById(R.id.btn_left); left.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if (!mSlideViewLeft.isShow()) mSlideViewLeft.show(); } });