Android改变系统自带ProgressDialog的文字大小

MainActivity如下:

package com.example.ttt;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.Window;
/**
 * Demo描述:
 * 改变系统自带ProgressDialog的文字大小
 * 
 * 改变方式:
 * 为ProgressDialog设置一个style即可
 * 参见styles.xml
 *
 */
public class MainActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //为此ProgressDialog指定style
    ProgressDialog dialog = new ProgressDialog(this,R.style.dialog);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    dialog.setCanceledOnTouchOutside(false);
    dialog.setMessage("loading");
    dialog.setCancelable(false);
    dialog.show();
    
  }
  

}

 

activity_main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" 
        android:layout_centerHorizontal="true"
     />

RelativeLayout>

styles.xml如下:

<resources xmlns:android="http://schemas.android.com/apk/res/android">

   
    <style name="AppBaseTheme" parent="android:Theme.Light">
       
    style>

  
    <style name="AppTheme" parent="AppBaseTheme">
    style>
    
    
    <style name="dialog" parent="@android:style/Theme.Dialog">
        @null
        true
        true
        true
        @android:color/transparent
        true
        @null
        25sp
    style>

resources>

 原文  http://blog.csdn.net/lfdfhl/article/details/11032535