Dialog显示

锁屏之上弹框

方法一：      

  getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED

                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);

方法二： 

 //mDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);

Dialog显示在底部

Window window = dialog.getWindow();
                window.setGravity(Gravity.BOTTOM);

                WindowManager m = getWindowManager();
                Display d = m.getDefaultDisplay(); //为获取屏幕宽、高
                WindowManager.LayoutParams p = dialog.getWindow().getAttributes(); //获取对话框当前的参数值
                p.width = d.getWidth(); //宽度设置为屏幕
                dialog.getWindow().setAttributes(p); //设置生效