自定义Dialog设置显示位置

Dialog dialog=new Dialog(TestActivity.this);
dialog.setContentView(R.layout.dialog);
Window mWindow = dialog.getWindow();
WindowManager.LayoutParams lp = mWindow.getAttributes();
//缺省居中lp.x=0,lp.y=0 新坐标 x小于0左移，大于0右移；y小于0上移，大于0下移
lp.x= 0;
lp.y= 0;