PopupWindow和AlertDialog的使用

1. PopupWindow的使用

 

2.AlertDialog的使用

alert = null;

                builder = new AlertDialog.Builder(MainActivity.this);

                alert = builder.setIcon(R.mipmap.ic_icon_fish)

                        .setTitle("系统提示：")

                        .setMessage("这是一个最普通的AlertDialog,\n带有三个按钮，分别是取消，中立和确定")

                        .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                            @Override

                            public void onClick(DialogInterface dialog, int which) {

                                Toast.makeText(mContext, "你点击了取消按钮~", Toast.LENGTH_SHORT).show();

                            }

                        })

                        .setPositiveButton("确定", new DialogInterface.OnClickListener() {

                            @Override

                            public void onClick(DialogInterface dialog, int which) {

                                Toast.makeText(mContext, "你点击了确定按钮~", Toast.LENGTH_SHORT).show();

                            }

                        })

                        .setNeutralButton("中立", new DialogInterface.OnClickListener() {

                            @Override

                            public void onClick(DialogInterface dialog, int which) {

                                Toast.makeText(mContext, "你点击了中立按钮~", Toast.LENGTH_SHORT).show();

                            }

                        }).create();             //创建AlertDialog对象

                alert.show();                    //显示对话框

 

 

 

自定义

//初始化Builder

        builder = new AlertDialog.Builder(mContext);

 

        //加载自定义的那个View,同时设置下

        final LayoutInflater inflater = MainActivity.this.getLayoutInflater();

        view_custom = inflater.inflate(R.layout.view_dialog_custom《自己写个布局》, null,false);

        builder.setView(view_custom);

        builder.setCancelable(false);

        alert = builder.create();

//展示

//取消 

PopupWindow和AlertDialog的区别:

(1)都可以拥有自己的布局;

(2)PopUPwindow是属于阻塞式的窗口:当窗口弹出的时候,窗口所在的应用程序处于等待状态;

(3)AlertDialog是属于非阻塞式窗口:当弹出对话框的时候,对话框所在的本身的应用程序依然处于运行中的状态;

(4)PopupWindow的覆盖面只是当前的窗口(5)AlertDialog的覆盖面是整个屏幕