不能创建目录是怎么回事？？？

[flying_vip_521]

写了一个图片工具类，不知道为什么不能在手机上创建目录，存在本地，请高手指点，谢谢！

package com.net.test;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.util.Log;

public class BitmapUtil {
	private static final String TAG = "BtimapUtil";
	
	private static BitmapUtil bitmapUtil = new BitmapUtil();
	
	public static BitmapUtil getInstance(){
		return bitmapUtil;
	}
	
	public Bitmap getBitmap(String url,Context context){
		String imageName= url.substring(url.lastIndexOf("/")+1, url.length());
		File file = new File(getSDPath(),imageName);
		Log.e(TAG, "filepath="+file.getPath());
		if(file.exists()){
			Log.e(TAG, "getBitmap from Local");
			return BitmapFactory.decodeFile(file.getPath());
		}
		return getNetBitmap(url,file,context);
	}
	
	public List<Bitmap> getBitmap(List<String> list,Context context){
		List<Bitmap> result = new ArrayList<Bitmap>();
		for(String strUrl : list){
			Bitmap bitmap = getBitmap(strUrl,context);
			if(bitmap!=null){
				result.add(bitmap);
			}
		}
		return result;
	}

	private String getSDPath(){
		String path = null;
		boolean hasSDCard = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
		if(hasSDCard){
			path="/mnt/sdcard/innomarket/images/";
		}else{
			path="/data/data/com.innofidei.android.innomarket/cach/images/";		
		}
		Log.e(TAG,"path="+path);
		File file = new File(path);
		if(!file.exists()){
			file.mkdir();
			Log.e(TAG,"no----file");
		}
		return file.getPath();
	}

	private Bitmap getNetBitmap(String strUrl,File file,Context context) {
		Log.e(TAG, "getBitmap from net");
		Bitmap bitmap = null;
		if(NetUtil.isConnnected(context)){
			try {
				URL url = new URL(strUrl);
				HttpURLConnection con = (HttpURLConnection) url.openConnection();
				con.setDoInput(true);
				con.connect();
				InputStream in = con.getInputStream();
				bitmap = BitmapFactory.decodeStream(in);
				Log.e(TAG,file.getPath());
				FileOutputStream out = new FileOutputStream(file.getPath());
				bitmap.compress(Bitmap.CompressFormat.JPEG,100, out);

				out.close();
				in.close();
			} catch (MalformedURLException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}			
		}
		return bitmap;
	}
	
}

[flying_vip_521]

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.net.test"
      android:versionCode="1"
      android:versionName="1.0">
   

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".NetActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
    <uses-permission android:name="android.permission.INTERNET" />
	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
	<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
     <uses-sdk android:minSdkVersion="8" />
</manifest>

[ch_984326013]

有什么错误信息啊。贴出来看看！

[xqhrs232]

没有权限?

[joze1122]

看你的路径好像是自己去拼写的，那你要清楚对于2.2 1.6不同平台路径是不同的，就拿SDCard的路径来说吧，不同平台路径分别是/sdcard或者/mnt/sdcard，所以你最好使用具体的函数得到路径

sdcard路径 Environment.getExternalStorageDirectory()
cache路径 context.getCacheDir()