Android 自定义对话框 显示不一样的风格

先上图：




图中选择头像和等待就是以对话框的形式出现的

等待对话框步骤
1 定义一个LoadingDialog继承DialogFragment

import android.app.Dialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;

import com.zsg.chatroom.R;

/**
 * 登陆时 弹出的等待自定义对话框
 */

public class LoadingDialog extends DialogFragment
{

	private String mMsg = "Loading";

	public void setMsg(String msg)
	{
		this.mMsg = msg;
	}

	@Override
	public Dialog onCreateDialog(Bundle savedInstanceState)
	{
		LayoutInflater inflater = getActivity().getLayoutInflater();
		View view = inflater.inflate(R.layout.dialog_loading, null);
		TextView title = (TextView) view
				.findViewById(R.id.id_dialog_loading_msg);
		title.setText(mMsg);
		Dialog dialog = new Dialog(getActivity(), R.style.dialog);
		dialog.setContentView(view);
		return dialog;
	}
}

2 定义dialog_loading布局文件

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:layout_gravity="center"
    android:background="@drawable/dialog_loading_bg" >

    <View
        android:layout_width="160.0dip"
        android:layout_height="160.0dip"
        android:layout_centerInParent="true" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:orientation="vertical" >

        <ProgressBar
            android:layout_width="46.0dip"
            android:layout_height="46.0dip"
            android:layout_gravity="center"
            android:layout_marginBottom="10.0dip"
            android:clickable="false"
            android:gravity="center" />

        <TextView
            android:id="@+id/id_dialog_loading_msg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:lineSpacingExtra="3.0dip"
            android:text="asdf"
            android:textColor="#ffffffff"
            android:textSize="17.0sp" />
    </LinearLayout>

</RelativeLayout>

3 在样式里 定义对话框样式

 <!-- 设置登陆等待时的自定义对话框样式 -->
    <style name="dialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <!-- 边框 -->
        <item name="android:windowIsFloating">true</item>
        <!-- 是否浮现在activity之上 -->
        <item name="android:backgroundDimEnabled">false</item>
        <!-- 模糊 -->
        <item name="android:windowIsTranslucent">false</item>
        <!-- 半透明 -->
        <item name="android:windowNoTitle">true</item>
        <!-- 无标题 -->
        <item name="android:windowBackground">@android:color/transparent</item>
        <!-- 背景透明 -->

    </style>