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);
  }
}