Android 向SD卡寫入文件_1

幾種方法得到的不同的目錄。

import android.os.Environment;
import android.util.Log;
public class FileUtils {
    private String SDPATH;
    private String getSDPATH() {
        return SDPATH;
    }

    public FileUtils() {
    SDPATH = Environment.getExternalStorageDirectory() + "/";
        String a = Environment.getDataDirectory()+"/";
        String b = Environment.getDownloadCacheDirectory()+"/";
        String c = Environment.getExternalStorageDirectory()+"/";
        String d = Environment.getExternalStoragePublicDirectory("Music")+"/";
        String e = Environment.getExternalStorageState()+"/";
        String f = Environment.getRootDirectory()+"/";
        Log.v("vv", a);
        Log.v("vv", b);
        Log.v("vv", c);
        Log.v("vv", d);
        Log.v("vv", e);
        Log.v("vv", f);
        }
    }
//輸出結果的比較
11-03 08:54:11.308: V/vv(21648): /data/
11-03 08:54:11.344: V/vv(21648): /cache/
11-03 08:54:17.996: V/vv(21648): /storage/emulated/0/
11-03 08:54:18.780: V/vv(21648): /storage/emulated/0/Music/
11-03 08:54:19.304: V/vv(21648): mounted/
11-03 08:54:20.420: V/vv(21648): /system/