AlertDialog 自定义View

    

首先我们定义一个界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="10dp">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/title"
        android:scaleType="fitXY"/>
    <EditText
        android:id="@+id/nameET"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名"/>
    <EditText
        android:id="@+id/pwdET"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"/>

</LinearLayout>

放在这

             

然后我们加载布局文件就可以了

//新建一个view
View customView = View.inflate(this,R.layout.custom_dialog,null);
//获取view的内容
final EditText nameET = customView.findViewById(R.id.nameET);
final EditText pwdET = customView.findViewById(R.id.pwdET);
//展示对话框
new AlertDialog.Builder(this)
        .setView(customView)
        .setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String name = nameET.getText().toString();
                String pwd = pwdET.getText().toString();
                String msg = name+" "+pwd;
                System.out.println(msg);
                Toast.makeText(MainActivity.this,msg,Toast.LENGTH_SHORT).show();
            }
        })
        .setNegativeButton("取消",null)
        .show();