小编Ahm*_*edW的帖子

有没有办法根据活动上设置的主题来更改样式？例如,假设我的活动有一个样式设置为TextViewStyle的textview

<TextView
   style="@style/TextViewStyle"        
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Text"/>

这是我的TextViewStyle

<style name="TextViewStyle" parent="android:style/Widget.TextView">
        <item name="android:textStyle">bold</item>
        <item name="android:textSize">8sp</item>
        <item name="android:textColor">@android:color/holo_blue_dark</item>
    </style>

在我的Styles.xml中,我有两个主题

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

   </style>


   <style name="AppThemeDark" parent="android:Theme.Material">

   </style>

现在,当我将主题设置为Dark时,我希望此主题覆盖我在TextViewStyle中设置的某些值.我怎么能这样做？我尝试了以下,但它不起作用

    <!-- Override TextViewStyle style for AppThemeLight-->
            <style name ="AppThemeLight.TextBlockStyle" parent="@style/TextBlockStyle">
                <item name="android:textColor">@color/my_purple</item>
                <item name="android:textSize">20sp</item>
            </style>
<!-- Override TextViewStyle style for AppThemeDark-->
            <style name ="AppThemeDark.TextBlockStyle" parent="@style/TextBlockStyle">
                <item name="android:textColor">@color/my_green</item>
                <item name="android:textSize">40sp</item>
            </style>

我有一个Web服务,返回PDF文件的base64编码字符串.

我想将此文件保存到SD卡.但是当我尝试这样做时,adobe reader会告诉我该文件已损坏.显然我没有妥善保存它.

byte[] pdfAsBytes = Base64.decode(resultsRequestSOAP.toString(), 0);

File filePath = new File(Environment.getExternalStorageDirectory()+"/braodcasts.pdf");
FileOutputStream os = new FileOutputStream(filePath, true);
os.write(pdfAsBytes);
os.close();

resultsRequestSOAP.toString() 看起来像这样:

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

这只是一个片段!

谢谢