安卓学习笔记(7)-弹出式可输入对话框

先定义一个layout作为弹出框的content

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/edUsername"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="username" />

</LinearLayout>

再通过AlertDialog来实现

AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
            builder.setTitle("游戏结束，请英雄留下您的称谓");
            // 通过LayoutInflater来加载一个xml的布局文件作为一个View对象
            View view = LayoutInflater.from(getContext()).inflate(
                    R.layout.dialog, null);
            // 设置我们自己定义的布局文件作为弹出框的Content
            builder.setView(view);

            final EditText username = (EditText) view
                    .findViewById(R.id.edUsername);

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

                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            //确定操作的内容
                        }
                    });

            builder.setNegativeButton("算了",
                    new DialogInterface.OnClickListener() {

                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            // TODO Auto-generated method stub
                            Toast.makeText(getContext(), "告辞！",
                                    Toast.LENGTH_SHORT).show();
                        }
                    });
            builder.show();

最后的结果