android系统定义了弹出框，支持我们自定义布局:

	public AlertDialog getEditCustomDialog() {
		LayoutInflater inflater = getLayoutInflater();
		View view = inflater.inflate(R.layout.custom_message_rename, null);
		AlertDialog.Builder builder = new AlertDialog.Builder(AnimationTest.this);
		builder.setView(view);
		builder.setTitle("A New Version is Available");
		return builder.create();
	}

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

    <EditText
        android:id="@+id/rc_document_edit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        android:imeOptions="flagNoEnterAction"
        android:inputType="textNoSuggestions"
        android:maxLines="5"
        android:textColor="#000000"
        android:textSize="@dimen/font_size_medium" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="10dp"
        android:background="?android:attr/dividerHorizontal" />

    <LinearLayout
        android:id="@+id/LinearLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:measureWithLargestChild="true"
        android:orientation="horizontal"
        android:padding="0dp" >

        <Button
            android:id="@+id/cancelBtn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?android:attr/selectableItemBackground"
            android:text="Cancel" />

        
        <View
            android:id="@+id/postCancelBtnDivider"
            android:layout_width="1dp"
            android:layout_height="match_parent"
            android:background="?android:attr/dividerHorizontal" />
        
        <Button
            android:id="@+id/okBtn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="?android:attr/selectableItemBackground"
            android:text="OK" />
    </LinearLayout>

</LinearLayout>

还有一种常见的样式是:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/title"
    android:layout_width="match_parent"
    android:layout_height="60dp" >

    <TextView
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_marginTop="20dp"
        android:layout_height="60dp"
        android:layout_marginLeft="25dp"
        android:text="@string/upgrade_content"
        android:textColor="#000000"
        android:textSize="22sp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_below="@id/content"
        android:orientation="horizontal" >

        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginLeft="15dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginLeft="15dp"
            android:text="@string/remind_me"
            android:textColor="#000000"
            android:textSize="14sp" />
    </LinearLayout>

</RelativeLayout>

如果想改变Dialog的大小可以这样写:

	<span style="white-space:pre">				</span>AlertDialog dialog = getCustomDialog();
					dialog.show();
					
					//一定得在show完dialog后来set属性
					WindowManager.LayoutParams lp = dialog.getWindow().getAttributes();
					lp.width = AnimationTest.this.getResources().getDimensionPixelSize(R.dimen.dialog_width);
					lp.height = AnimationTest.this.getResources().getDimensionPixelSize(R.dimen.dialog_height);
					dialog.getWindow().setAttributes(lp);