blocks|key|261322|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|261323|我假设你的文本文件在SD卡上|261324|++++//Find+the+directory+for+the+SD+Card+using+the+API
//*Don't*+hardcode+"/sdcard"
File+sdcard+=+Environment.getExternalStorageDirectory();

//Get+the+text+file
File+file+=+new+File(sdcard,"file.txt");

//Read+text+from+file
StringBuilder+text+=+new+StringBuilder();

try+{
++++BufferedReader+br+=+new+BufferedReader(new+FileReader(file));
++++String+line;

++++while+((line+=+br.readLine())+!=+null)+{
++++++++text.append(line);
++++++++text.append('\n');
++++}
++++br.close();
}
catch+(IOException+e)+{
++++//You'll+need+to+add+proper+error+handling+here
}

//Find+the+view+by+its+id
TextView+tv+=+(TextView)findViewById(R.id.text_view);

//Set+the+text
tv.setText(text.toString());|code-block|syntax|javascript|261325|以下链接也可以帮助您：|261326|How+can+I+read+a+text+file+from+the+SD+card+in+Android?|offset|length|261327|How+to+read+text+file+in+Android?|261328|Android+read+text+raw+resource+file|261329|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2902689/how-can-i-read-a-text-file-from-the-sd-card-in-android|1|https://stackoverflow.com/questions/3344551/how-to-read-text-file-in-android|2|https://stackoverflow.com/questions/4087674/android-read-text-raw-resource-file^0|0|0|0|0|0|1J|0|0|0|X|1|0|0|Z|2|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|18|8|@]|9|@$M|19|N|1A|1|1B]]|A|$]]|$1|O|3|P|5|6|7|1C|8|@]|9|@$M|1D|N|1E|1|1F]]|A|$]]|$1|Q|3|R|5|6|7|1G|8|@]|9|@$M|1H|N|1I|1|1J]]|A|$]]|$1|S|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]|10|$5|V|W|X|A|$Y|11]]|12|$5|V|W|X|A|$Y|13]]]]

Try this :

I assume your text file is on sd card

<pre><code> //Find the directory for the SD Card using the API
//*Don't* hardcode "/sdcard"
File sdcard = Environment.getExternalStorageDirectory();

//Get the text file
File file = new File(sdcard,"file.txt");

//Read text from file
StringBuilder text = new StringBuilder();

try {
 BufferedReader br = new BufferedReader(new FileReader(file));
 String line;

 while ((line = br.readLine()) != null) {
 text.append(line);
 text.append('\n');
 }
 br.close();
}
catch (IOException e) {
 //You'll need to add proper error handling here
}

//Find the view by its id
TextView tv = (TextView)findViewById(R.id.text_view);

//Set the text
tv.setText(text.toString());
</code></pre>

following links can also help you :

<a href="https://stackoverflow.com/questions/2902689/how-can-i-read-a-text-file-from-the-sd-card-in-android">How can I read a text file from the SD card in Android?</a>

<a href="https://stackoverflow.com/questions/3344551/how-to-read-text-file-in-android">How to read text file in Android?</a>

<a href="https://stackoverflow.com/questions/4087674/android-read-text-raw-resource-file">Android read text raw resource file</a>

blocks|key|478198|text|如果你想从SD卡中读取文件。那么下面的代码可能会对你有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|478199|+StringBuilder+text+=+new+StringBuilder();
++++try+{
++++File+sdcard+=+Environment.getExternalStorageDirectory();
++++File+file+=+new+File(sdcard,"testFile.txt");

++++++++BufferedReader+br+=+new+BufferedReader(new+FileReader(file));++
++++++++String+line;+++
++++++++while+((line+=+br.readLine())+!=+null)+{
++++++++++++++++++++text.append(line);
++++++++++++++++++++Log.i("Test",+"text+:+"%2Btext%2B"+:+end");
++++++++++++++++++++text.append('\n');
++++++++++++++++++++}+}
++++catch+(IOException+e)+{
++++++++e.printStackTrace();++++++++++++++++++++

++++}
++++finally{
++++++++++++br.close();
++++}+++++++
++++TextView+tv+=+(TextView)findViewById(R.id.amount);++

++++tv.setText(text.toString());+////Set+the+text+to+text+view.
++}

++++}|code-block|syntax|javascript|478200|如果您想从资产文件夹中读取文件，则|478201|AssetManager+am+=+context.getAssets();
InputStream+is+=+am.open("test.txt");|478202|或者，如果您想要从res/raw文件夹中读取此文件，该文件将被索引，并可通过R文件中的id进行访问：|offset|length|style|CODE|478203|InputStream+is+=+getResources().openRawResource(R.raw.test);+++++|478204|Good+example+of+reading+text+file+from+res/raw+folder|478205|entityMap|0|LINK|mutability|MUTABLE|url|http://www.java-samples.com/showtutorial.php?tutorialid=1522^0|0|0|0|0|9|7|0|0|0|1H|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|16|8|@$M|17|N|18|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1A|8|@]|9|@$M|1B|N|1C|1|1D]]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

If you want to read file from sd card. Then following code might be helpful for you. 

<pre><code> StringBuilder text = new StringBuilder();
 try {
 File sdcard = Environment.getExternalStorageDirectory();
 File file = new File(sdcard,"testFile.txt");

 BufferedReader br = new BufferedReader(new FileReader(file)); 
 String line; 
 while ((line = br.readLine()) != null) {
 text.append(line);
 Log.i("Test", "text : "+text+" : end");
 text.append('\n');
 } }
 catch (IOException e) {
 e.printStackTrace(); 

 }
 finally{
 br.close();
 } 
 TextView tv = (TextView)findViewById(R.id.amount); 

 tv.setText(text.toString()); ////Set the text to text view.
 }

 }
</code></pre>

If you wan to read file from asset folder then 

<pre><code>AssetManager am = context.getAssets();
InputStream is = am.open("test.txt");
</code></pre>

Or If you wan to read this file from <code>res/raw</code> foldery, where the file will be indexed and is accessible by an id in the R file:

<pre><code>InputStream is = getResources().openRawResource(R.raw.test); 
</code></pre>

<a href="http://www.java-samples.com/showtutorial.php?tutorialid=1522" rel="noreferrer">Good example of reading text file from res/raw folder</a>

blocks|key|478238|text|首先，您将文本文件存储到raw文件夹中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|478239|private+void+loadWords()+throws+IOException+{
++++Log.d(TAG,+"Loading+words...");
++++final+Resources+resources+=+mHelperContext.getResources();
++++InputStream+inputStream+=+resources.openRawResource(R.raw.definitions);
++++BufferedReader+reader+=+new+BufferedReader(new+InputStreamReader(inputStream));

++++try+{
++++++++String+line;
++++++++while+((line+=+reader.readLine())+!=+null)+{
++++++++++++String[]+strings+=+TextUtils.split(line,+"-");
++++++++++++if+(strings.length+<+2)
++++++++++++++++continue;
++++++++++++long+id+=+addWord(strings[0].trim(),+strings[1].trim());
++++++++++++if+(id+<+0)+{
++++++++++++++++Log.e(TAG,+"unable+to+add+word:+"+%2B+strings[0].trim());
++++++++++++}
++++++++}
++++}+finally+{
++++++++reader.close();
++++}
++++Log.d(TAG,+"DONE+loading+words.");
}|code-block|syntax|javascript|478240|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

First you store your text file in to raw folder.

<pre><code>private void loadWords() throws IOException {
 Log.d(TAG, "Loading words...");
 final Resources resources = mHelperContext.getResources();
 InputStream inputStream = resources.openRawResource(R.raw.definitions);
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

 try {
 String line;
 while ((line = reader.readLine()) != null) {
 String[] strings = TextUtils.split(line, "-");
 if (strings.length &lt; 2)
 continue;
 long id = addWord(strings[0].trim(), strings[1].trim());
 if (id &lt; 0) {
 Log.e(TAG, "unable to add word: " + strings[0].trim());
 }
 }
 } finally {
 reader.close();
 }
 Log.d(TAG, "DONE loading words.");
}
</code></pre>

blocks|key|261551|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|261552|try+{
++++++++reader+=+new+BufferedReader(new+InputStreamReader(in,"UTF-8"));
++++}+catch+(UnsupportedEncodingException+e1)+{
++++++++//+TODO+Auto-generated+catch+block
++++++++e1.printStackTrace();
++++}
++++++String+line="";
++++++String+s+="";
+++try+
+++{
+++++++line+=+reader.readLine();
+++}+
+++catch+(IOException+e)+
+++{
+++++++e.printStackTrace();
+++}
++++++while+(line+!=+null)+
++++++{
+++++++s+=+s+%2B+line;
+++++++s+=s%2B"\n";
+++++++try+
+++++++{
+++++++++++line+=+reader.readLine();
+++++++}+
+++++++catch+(IOException+e)+
+++++++{
+++++++++++e.printStackTrace();
+++++++}
++++}
++++tv.setText(""%2Bs);
++}|code-block|syntax|javascript|261553|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this 

<pre><code>try {
 reader = new BufferedReader(new InputStreamReader(in,"UTF-8"));
 } catch (UnsupportedEncodingException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
 }
 String line="";
 String s ="";
 try 
 {
 line = reader.readLine();
 } 
 catch (IOException e) 
 {
 e.printStackTrace();
 }
 while (line != null) 
 {
 s = s + line;
 s =s+"\n";
 try 
 {
 line = reader.readLine();
 } 
 catch (IOException e) 
 {
 e.printStackTrace();
 }
 }
 tv.setText(""+s);
 }
</code></pre>

blocks|key|478274|text|试试这段代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|478275|public+static+String+pathRoot+=+"/sdcard/system/temp/";
public+static+String+readFromFile(Context+contect,+String+nameFile)+{
++++String+aBuffer+=+"";
++++try+{
++++++++File+myFile+=+new+File(pathRoot+%2B+nameFile);
++++++++FileInputStream+fIn+=+new+FileInputStream(myFile);
++++++++BufferedReader+myReader+=+new+BufferedReader(new+InputStreamReader(fIn));
++++++++String+aDataRow+=+"";
++++++++while+((aDataRow+=+myReader.readLine())+!=+null)+{
++++++++++++aBuffer+%2B=+aDataRow;
++++++++}
++++++++myReader.close();
++++}+catch+(FileNotFoundException+e)+{
++++++++e.printStackTrace();
++++}+catch+(IOException+e)+{
++++++++e.printStackTrace();
++++}
++++return+aBuffer;
}|code-block|syntax|javascript|478276|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this code

<pre><code>public static String pathRoot = "/sdcard/system/temp/";
public static String readFromFile(Context contect, String nameFile) {
 String aBuffer = "";
 try {
 File myFile = new File(pathRoot + nameFile);
 FileInputStream fIn = new FileInputStream(myFile);
 BufferedReader myReader = new BufferedReader(new InputStreamReader(fIn));
 String aDataRow = "";
 while ((aDataRow = myReader.readLine()) != null) {
 aBuffer += aDataRow;
 }
 myReader.close();
 } catch (FileNotFoundException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }
 return aBuffer;
}
</code></pre>

blocks|key|478307|text|小文本文件的最短格式(+Kotlin)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|478308|val+reader+=+FileReader(path)
val+txt+=+reader.readText()
reader.close()|code-block|syntax|javascript|478309|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Shortest form for small text files (in Kotlin):
<pre><code>val reader = FileReader(path)
val txt = reader.readText()
reader.close()
</code></pre>

I want to read the text from a text file. In the code below, an exception occurs (that means it goes to the <code>catch</code> block). I put the text file in the application folder. Where should I put this text file (mani.txt) in order to read it correctly?

<pre><code> try
 {
 InputStream instream = openFileInput("E:\\test\\src\\com\\test\\mani.txt"); 
 if (instream != null)
 {
 InputStreamReader inputreader = new InputStreamReader(instream); 
 BufferedReader buffreader = new BufferedReader(inputreader); 
 String line,line1 = "";
 try
 {
 while ((line = buffreader.readLine()) != null)
 line1+=line;
 }catch (Exception e) 
 {
 e.printStackTrace();
 }
 }
 }
 catch (Exception e) 
 {
 String error="";
 error=e.getMessage();
 }
</code></pre>

How can I read a text file in Android?

文件存储

Kotlin

我想从文本文件中读取文本。在下面的代码中，发生了一个异常(这意味着它转到了catch块)。我将文本文件放在应用程序文件夹中。我应该将这个文本文件(mani.txt)放在哪里才能正确读取它？    try    {        InputStream instream = openFileInput("E:\\test...

问如何在Android中读取文本文件？
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