Android 新手引导蒙层效果实现代码示例

public void showGuideView() {  View view = getWindow().getDecorView().findViewById(R.id.activity_main);  if (view == null) return;  ViewParent viewParent = view.getParent();  if (viewParent instanceof FrameLayout) {    final FrameLayout frameParent = (FrameLayout) viewParent;//整个父布局    final LinearLayout linearLayout = new LinearLayout(this);//新建一个LinearLayout    linearLayout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));    linearLayout.setOrientation(LinearLayout.VERTICAL);    linearLayout.setBackgroundResource(#88000000);//背景设置灰色透明    linearLayout.setGravity(Gravity.CENTER_HORIZONTAL);    linearLayout.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {       frameParent.removeView(linearLayout);      }    });    Rect rect = new Rect();    Point point = new Point();    nearby.getGlobalVisibleRect(rect, point);    //获得nearby这个控件的宽高以及XY坐标 nearby这个控件对应就是需要高亮显示的地方    ImageView topGuideview = new ImageView(this);    topGuideview.setLayoutParams(new ViewGroup.LayoutParams(rect.width(), rect.height()));      topGuideview.setBackgroundResource(R.drawable.iv_topguide);     Rect rt = new Rect();     getWindow().getDecorView().getWindowVisibleDisplayFrame(rt);    topGuideview.setY(point.y - rt.top);//rt.top是手机状态栏的高度    ImageView bottomGuideview = new ImageView(this);    bottomGuideview.setLayoutParams(new ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT));    bottomGuideview.setBackgroundResource(R.drawable.iv_bottomguide);    bottomGuideview.setY(point.y + topGuideview.getHeight());    linearLayout.addView(topGuideview);    linearLayout.addView(bottomGuideview);    frameParent.addView(linearLayout);  }}