Environment.MEDIA_MOUNTED, Environment.MEDIA_MOUNTED_READ_ONLY : Environment « Core Class « Android

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Android » Core Class » Environment 
Environment.MEDIA_MOUNTED, Environment.MEDIA_MOUNTED_READ_ONLY
    

//package com.loveofsoftware.fotolab;

import java.io.File;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Environment;

class Util {
  public static String getNewName(String originalName, Context ctx) {
    if(null == originalName)
    {
      originalName = "tmp";
      System.out.println("ERROR: Why did i get null orginalName?");
    }
        int MAX_ATTEMPTS = 10;
        int attempts = 0;
        
        String result = getFotolabDir(ctx);// + Constants.APP_NAME + "/";
        while(attempts++ < MAX_ATTEMPTS) {
              String picName = originalName.substring(originalName.lastIndexOf("/")+1);
              //remove the extension such as .jpg, .png etc
              picName = picName.replaceAll("\\..*""");
              
              picName = result + picName + System.currentTimeMillis() ".png";
              
              File file = new File(picName);
              if(!file.exists())
                    return picName;
        }
        
        throw new RuntimeException("couldn't get a name");
  }
  
  private static void alert(String msg, Context ctx)
  {
    AlertDialog.Builder builder = new AlertDialog.Builder(ctx);
    builder.setMessage(msg)
           .setCancelable(false)
           .setPositiveButton("OK"new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   
               }
           })           
           ;
    AlertDialog alert = builder.create();
    alert.show();
  }
  public static String getFotolabDir(Context ctx)
  {
    boolean mExternalStorageAvailable = false;
    boolean mExternalStorageWriteable = false;
    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED.equals(state)) {
        // We can read and write the media
        mExternalStorageAvailable = mExternalStorageWriteable = true;
    else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        // We can only read the media
        mExternalStorageAvailable = true;
        mExternalStorageWriteable = false;
    else {
        // Something else is wrong. It may be one of many other states, but all we need
        //  to know is we can neither read nor write
        mExternalStorageAvailable = mExternalStorageWriteable = false;
    }
    
    if(!mExternalStorageAvailable)
    {
      alert("External media is not available. App may not function correctly",ctx);
    }else if(!mExternalStorageWriteable)
    {
      alert("External media is not writable. App may not function correctly",ctx);
    }
    return Environment.getExternalStorageDirectory().getAbsolutePath()+"/fotolab/";
    
  }


}

   
    
    
    
  
Related examples in the same category
1.Create a new directory on external storage
2.May crash when External-Media is not mounted.
3.is Storage Readable/Writable
4.Get External Storage Directory
5.Utility class used to deal with SD card cache.
6.return True if the external storage is available/writable.
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