Android file operation-read the contents of assets and raw files

1. Create the Assets folder and the Res/raw folder separately: (Note that the raw file is new under Res, and then create a folder with the name Raw)

2. Create two txt files and copy them to the asset and raw folders:

3. The effect of the implementation:

4. Implementation code:

(1) Layout file:

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 Xmlns:tools= "Http://schemas.android.com/tools"4 Android:layout_width= "Match_parent"5 Android:layout_height= "Match_parent"6 android:orientation= "vertical"7 Tools:context= "Base.readassetsfile.MainActivity">8     <Button9         android:textsize= "20SP"Ten Android:text= "@string/aasets_txt" One Android:id= "@+id/readfile" A Android:layout_width= "Match_parent" - Android:layout_height= "Wrap_content" /> -     <Button the         android:textsize= "20SP" - Android:text= "@string/raw" - Android:id= "@+id/readrawfile" - Android:layout_width= "Match_parent" + Android:layout_height= "Wrap_content" /> - </LinearLayout>

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(2) Concrete realization:

1  PackageBase.readassetsfile;2 3 Importandroid.support.v7.app.AppCompatActivity;4 ImportAndroid.os.Bundle;5 ImportAndroid.util.Log;6 ImportAndroid.view.View;7 ImportAndroid.widget.EditText;8 9 ImportJava.io.BufferedReader;Ten Importjava.io.IOException; One ImportJava.io.InputStream; A ImportJava.io.InputStreamReader; - ImportJava.io.OutputStream; - Importjava.io.UnsupportedEncodingException; the  -  Public classMainactivityextendsAppcompatactivityImplementsView.onclicklistener { - @Override -     protected voidonCreate (Bundle savedinstancestate) { +         Super. OnCreate (savedinstancestate); - Setcontentview (r.layout.activity_main); +Findviewbyid (R.id.readfile). Setonclicklistener ( This); AFindviewbyid (R.id.readrawfile). Setonclicklistener ( This); at     } - @Override -      Public voidOnClick (View v) { -         Switch(V.getid ()) { -              CaseR.id.readfile: - Readasset (); in                  Break; -              CaseR.id.readrawfile: to Readraw (); +                  Break; -         } the     } *      Public voidReadasset () { $         Try {Panax Notoginseng             //get bytes in a file -InputStream inputstream=getresources (). Getassets (). Open ("Test.txt"); the             //Convert bytes to characters +InputStreamReader isreader=NewInputStreamReader (InputStream, "UTF-8"); A             //use Bufferreader to read content theBufferedReader reader=NewBufferedReader (isreader); +String out= ""; -              while((Out=reader.readline ())! =NULL){ $LOG.D ("Read file information:", out); $             } -}Catch(IOException e) { - e.printstacktrace (); the         } -     }Wuyi      Public voidReadraw () { the         Try { -             //get the contents of a file WuInputStream inputstream=getresources (). Openrawresource (r.raw.test); -             //converts a byte in a file to a character AboutInputStreamReader isreader=NewInputStreamReader (InputStream, "UTF-8"); $             //use Bufferreader to read characters -BufferedReader reader=NewBufferedReader (isreader); -String out= ""; -             Try { A                  while((Out=reader.readline ())! =NULL){ +LOG.D ("Data read from Raw folder:", out); the                 } -}Catch(IOException e) { $ e.printstacktrace (); the             } the}Catch(unsupportedencodingexception e) { the e.printstacktrace (); the         } -     } in  the}

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Android file operation-read the contents of assets and raw files