Android中自定义ProgressDialog显示位置

1、一般情况下，系统默认的Dialog显示位置为屏幕居中：

	pbDialog = new ProgressDialog(MainActivity.this);
	pbDialog.setMessage("请稍等，加载中");
	pbDialog.show();

2、设置Dialog显示位置在屏幕底部：

	pbDialog = new ProgressDialog(MainActivity.this);
	pbDialog.setMessage("请稍等，加载中");

	WindowManager.LayoutParams params = pbDialog.getWindow().getAttributes();
	pbDialog.getWindow().setGravity(Gravity.BOTTOM);
	pbDialog.show();

3、设置Dialog显示位置在屏幕底部，并且距离底部100px:

	pbDialog = new ProgressDialog(MainActivity.this);
	pbDialog.setMessage("请稍等，加载中");

	WindowManager.LayoutParams params = pbDialog.getWindow().getAttributes();
	pbDialog.getWindow().setGravity(Gravity.BOTTOM);
	params.y = 100;
	pbDialog.getWindow().setAttributes(params);
	pbDialog.show();