alertdialog 设置最大高度

设置最大高度，有很多方法，我个人比较喜欢的是下面这种方式 ，这里的view即添加到

  view.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {

            @Override

            public void onLayoutChange (View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {

                int height = view.getHeight();

                int maxHeight = DensityUtils.dpToPx(mHomeActivity, 200);

                if(height> maxHeight){
　　　　　　　　　　　　//这里也可采用现获取layoutParams

                    view.setLayoutParams(new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,maxHeight));

                    //这里一定是frameLayout，不然会转换异常，由此可见alertdialog底层是frameLayout

                }

            }

        });

2.在dialog中含有recyclerView或者listview，用的relativeLayout，结果listview下面会被截取掉，这里应该这么处理

 view.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {

            @Override

            public void onLayoutChange (View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {

                int height = mDeviceList.getHeight();

                int maxHeight = DensityUtils.dpToPx(mHomeActivity, 200);

                if(height> maxHeight){

                    //必须首先获取控件的layoutParams，然后再更改，new一个不行

                    ViewGroup.LayoutParams layoutParams = mDeviceList.getLayoutParams();

                    layoutParams.height = maxHeight;

                    mDeviceList.setLayoutParams(layoutParams);

                }

            }

        });

这种方法会导致recyclerview的点击事件，不能及时响应。原因暂时不明