Làm thế nào để lưu tập tin vào thẻ sd

Question

Tôi kinda mới để lập trình android và java, có thể ai đó cho tôi biết làm thế nào để lưu các tập tin, tôi có các mã sau:

InputStream is = new FileInputStream(location + "/zipSample.zip"); 
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(is)); 

try { 
    ZipEntry ze; 
    while ((ze = zis.getNextEntry()) != null) { 
     ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
     byte[] buffer = new byte[1024]; 

     int count; 
     while ((count = zis.read(buffer)) != -1) { 
      baos.write(buffer, 0, count); 
     } 

     String filename = ze.getName(); 
     byte[] bytes = baos.toByteArray(); 

     // Do something with 'filename' and 'bytes' ... 
     // How do I save to sdcard? 
    } 
} finally { 
    zis.close(); 
} 

Cảm ơn rất nhiều sự giúp đỡ nào .

Answer 1

Tốt câu trả lời đã đăng nó trông như thế nào, nếu bạn cần thêm trợ giúp chỉ cần hỏi: Writing a file to sdcard

Answer 2

javafile.

package com.javasamples; 

import java.io.*; 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.*; 
import android.view.View.OnClickListener; 
import android.widget.*; 

public class FileDemo2 extends Activity { 
    // GUI controls 
    EditText txtData; 
    Button btnWriteSDFile; 
    Button btnReadSDFile; 
    Button btnClearScreen; 
    Button btnClose; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    // bind GUI elements with local controls 
    txtData = (EditText) findViewById(R.id.txtData); 
    txtData.setHint("Enter some lines of data here..."); 

    btnWriteSDFile = (Button) findViewById(R.id.btnWriteSDFile); 
    btnWriteSDFile.setOnClickListener(new OnClickListener() { 

    public void onClick(View v) { 
     // write on SD card file data in the text box 
     try { 
      File myFile = new File("/sdcard/mysdfile.txt"); 
      myFile.createNewFile(); 
      FileOutputStream fOut = new FileOutputStream(myFile); 
      OutputStreamWriter myOutWriter = 
            new OutputStreamWriter(fOut); 
      myOutWriter.append(txtData.getText()); 
      myOutWriter.close(); 
      fOut.close(); 
      Toast.makeText(getBaseContext(), 
        "Done writing SD 'mysdfile.txt'", 
        Toast.LENGTH_SHORT).show(); 
     } catch (Exception e) { 
      Toast.makeText(getBaseContext(), e.getMessage(), 
        Toast.LENGTH_SHORT).show(); 
     } 
    }// onClick 
    }); // btnWriteSDFile 

     btnReadSDFile = (Button) findViewById(R.id.btnReadSDFile); 
     btnReadSDFile.setOnClickListener(new OnClickListener() { 

     public void onClick(View v) { 
      // write on SD card file data in the text box 
     try { 
      File myFile = new File("/sdcard/mysdfile.txt"); 
      FileInputStream fIn = new FileInputStream(myFile); 
      BufferedReader myReader = new BufferedReader(
        new InputStreamReader(fIn)); 
      String aDataRow = ""; 
      String aBuffer = ""; 
      while ((aDataRow = myReader.readLine()) != null) { 
       aBuffer += aDataRow + "\n"; 
      } 
      txtData.setText(aBuffer); 
      myReader.close(); 
      Toast.makeText(getBaseContext(), 
        "Done reading SD 'mysdfile.txt'", 
        Toast.LENGTH_SHORT).show(); 
     } catch (Exception e) { 
      Toast.makeText(getBaseContext(), e.getMessage(), 
        Toast.LENGTH_SHORT).show(); 
     } 
     }// onClick 
     }); // btnReadSDFile 

     btnClearScreen = (Button) findViewById(R.id.btnClearScreen); 
     btnClearScreen.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       // clear text box 
       txtData.setText(""); 
      } 
     }); // btnClearScreen 

     btnClose = (Button) findViewById(R.id.btnClose); 
     btnClose.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       // clear text box 
       finish(); 
      } 
     }); // btnClose 

    }// onCreate 

}// AndSDcard 



xmlfile. 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
android:id="@+id/widget28" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:background="#ff0000ff" 
android:orientation="vertical" 
xmlns:android="http://schemas.android.com/apk/res/android" 
> 
<EditText 
android:id="@+id/txtData" 
android:layout_width="fill_parent" 
android:layout_height="180px" 
android:textSize="18sp" /> 

<Button 
android:id="@+id/btnWriteSDFile" 
android:layout_width="143px" 
android:layout_height="44px" 
android:text="1. Write SD File" /> 

<Button 
android:id="@+id/btnClearScreen" 
android:layout_width="141px" 
android:layout_height="42px" 
android:text="2. Clear Screen" /> 

<Button 
android:id="@+id/btnReadSDFile" 
android:layout_width="140px" 
android:layout_height="42px" 
android:text="3. Read SD File" /> 

<Button 
android:id="@+id/btnClose" 
android:layout_width="141px" 
android:layout_height="43px" 
android:text="4. Close" /> 

</LinearLayout>