从xml文件夹Android读取文件答案

【问题标题】：Read file from xml folder Android从xml文件夹Android读取文件
【发布时间】：2013-12-17 13:38:54
【问题描述】：

我需要从我的 xml 文件夹中读取一个 xml 文件，但我是 getting no such file 错误。谁能告诉我如何从 android 的 xml 文件夹中读取 XML 文件？

这是我的代码：

InputSource inputSource = new InputSource(getResources().openRawResource(
                 getResId("R.xml." + fileName.substring(0,fileName.length() - 4),
                 AlbumDetails.class)));

和logCat输出：

12-17 14:32:59.513: W/System.err(3563): java.lang.NoSuchFieldException: R.xml.quran_simple
12-17 14:32:59.513: W/System.err(3563):     at java.lang.Class.getDeclaredField(Class.java:631)
12-17 14:32:59.513: W/System.err(3563):     at com.darkovski.quran.AlbumDetails.getResId(AlbumDetails.java:250)
12-17 14:32:59.513: W/System.err(3563):     at com.darkovski.quran.AlbumDetails$3.doInBackground(AlbumDetails.java:282)
12-17 14:32:59.513: W/System.err(3563):     at com.darkovski.quran.AlbumDetails$3.doInBackground(AlbumDetails.java:1)
12-17 14:32:59.513: W/System.err(3563):     at android.os.AsyncTask$2.call(AsyncTask.java:264)
12-17 14:32:59.513: W/System.err(3563):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-17 14:32:59.513: W/System.err(3563):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-17 14:32:59.513: W/System.err(3563):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
12-17 14:32:59.513: W/System.err(3563):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-17 14:32:59.513: W/System.err(3563):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-17 14:32:59.513: W/System.err(3563):     at java.lang.Thread.run(Thread.java:856)
12-17 14:32:59.513: W/ResourceType(3563): No known package when getting value for resource number 0xffffffff
12-17 14:32:59.513: W/dalvikvm(3563): threadid=16: thread exiting with uncaught exception (group=0x2b542210)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563): 17-12-13 14:32:59:524 Unexpected problem on thread AsyncTask #3: An error occured while executing doInBackground()
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563): 17-12-13 14:32:59:530 java.lang.RuntimeException: An error occured while executing doInBackground()
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.os.AsyncTask$3.done(AsyncTask.java:278)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.lang.Thread.run(Thread.java:856)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0xffffffff
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.content.res.Resources.getValue(Resources.java:1018)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.content.res.Resources.openRawResource(Resources.java:943)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.content.res.Resources.openRawResource(Resources.java:925)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at com.darkovski.quran.AlbumDetails$3.doInBackground(AlbumDetails.java:281)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at com.darkovski.quran.AlbumDetails$3.doInBackground(AlbumDetails.java:1)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at android.os.AsyncTask$2.call(AsyncTask.java:264)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-17 14:32:59.523: E/Burstly SDK v.1.34.0.46238 BackgroundUncaughtExceptionHandler(3563):  ... 5 more

【问题讨论】：

标签： android android-asynctask android-xml android-resources

【解决方案1】：

如果你需要一个输入流，只需将 xml 放入原始资源并用

打开它

InputStream inputStream = getResources().openRawResource(R.raw.fileName);

【讨论】：

这是否意味着我应该将文件移动到raw 文件夹？
是的，我需要输入流，所以只是为了澄清将 xml 文件从 XML 文件夹复制到原始文件夹对吗？

【解决方案2】：

在 res/ 文件夹中所有的 xml 文件都是预编译的，而在 assets/ 文件夹中它们不是。

所以使用这个你想从 res 文件夹中解析它

XmlResourceParser xrp = ctx.getAssets().openXmlResourceParser("res/xml/castle1.tmx");

否则使用可以使用

InputStream object = this.getResources()
                 .openRawResource(R.raw.fileName);

【讨论】：

【解决方案3】：

如果你真的需要源文本，它应该这样工作：

（使用 XmlResourceParser）

@Throws(IOException::class, XmlPullParserException::class)
fun readXML(context: Context, idRes: Int): String? {
    return if (idRes != View.NO_ID)
        context.resources.getXml(idRes).getAllXML()
    else
        null
}

@Throws(IOException::class, XmlPullParserException::class)
fun XmlResourceParser.getAllXML(): String {
    var str = ""
    var eventType = eventType
    while (eventType != XmlPullParser.END_DOCUMENT) {
        if (eventType == XmlPullParser.START_TAG) {
            str += "<${name}"
            for (i in 0..attributeCount) {
                val attrName = getAttributeName(i)
                val attrValue = getAttributeValue(i)
                str += "${attrName}=\"${attrValue}\""
            }
            str += ">"
            str += nextText()
        }
        if (eventType == XmlPullParser.CDSECT) {
            str += "<![CDATA[${nextText()}]]>"
        }
        if (eventType == XmlPullParser.END_TAG) {
            str += "</${name}>"
        }
        eventType = next()
    }
    return str
}

【讨论】：

【解决方案4】：

InputStream is = getResources().getAssets().open("abc.txt");
String result= convertStreamToString(is);

public static String convertStreamToString(InputStream is)
        throws IOException {
        Writer writer = new StringWriter();
    char[] buffer = new char[2048];
    try {
        Reader reader = new BufferedReader(new InputStreamReader(is,
                "UTF-8"));
        int n;
        while ((n = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, n);
        }
    } finally {
        is.close();
    }
    String text = writer.toString();
    return text;
}

在此代码中.. 使用您的文件夹而不是“assets”。

【讨论】：