讀取文件類

import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException;public class TxtReader {/*** 通過一個InputStream獲取內容** @param inputStream* @return*/public static String getString(InputStream inputStream) {InputStreamReader inputStreamReader = null;try {inputStreamReader = new InputStreamReader(inputStream, "utf-8");} catch (UnsupportedEncodingException e1) {e1.printStackTrace();}BufferedReader reader = new BufferedReader(inputStreamReader);StringBuffer sb = new StringBuffer("");String line;try {while ((line = reader.readLine()) != null) {sb.append(line);sb.append("\n");}} catch (IOException e) {e.printStackTrace();}return sb.toString();}/*** 通過txt文件的路徑獲取其內容** @param filepath* @return*/public static String getString(String filepath) {File file = new File(filepath);FileInputStream fileInputStream = null;try {fileInputStream = new FileInputStream(file);} catch (FileNotFoundException e) {e.printStackTrace();}return getString(fileInputStream);} }布局 就一個textview

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:paddingBottom="@dimen/activity_vertical_margin"app:layout_behavior="@string/appbar_scrolling_view_behavior"tools:showIn="@layout/activity_main" tools:context=".MainActivity"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=""android:id="@+id/textView"android:layout_alignParentTop="true"android:layout_alignParentRight="true"android:layout_alignParentEnd="true"android:layout_alignParentLeft="true"android:layout_alignParentStart="true"android:layout_alignParentBottom="true" /></RelativeLayout>
讀取文件 與滾動設置

InputStream inputStream = getResources().openRawResource(R.raw.q);String string = TxtReader.getString(inputStream);TextView textView=(TextView)findViewById(R.id.textView);textView.setText(string);textView.setMovementMethod(ScrollingMovementMethod.getInstance());

總結

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