android自由改变Dialog窗口位置的方法

Dialog dialog = new Dialog(this);dialog.setContentView(R.layout.dialog_layout);dialog.setTitle("Custom Dialog"); //获得当前窗体Window window = dialog.getWindow();//重新设置WindowManager.LayoutParams lp = dialogWindow.getAttributes();window .setGravity(Gravity.LEFT | Gravity.TOP);lp.x = 100; // 新位置X坐标lp.y = 100; // 新位置Y坐标lp.width = 300; // 宽度lp.height = 300; // 高度lp.alpha = 0.7f; // 透明度// dialog.onWindowAttributesChanged(lp);//(当Window的Attributes改变时系统会调用此函数)window .setAttributes(lp);dialog.show();