getExternalStorageDirectory（）不被識別

private Context mContext; 


public Upload(Context context, DropboxAPI<?> api, String dropboxPath) 
    { 

     // We set the context this way so we don't accidentally leak activities 
     mContext = context.getApplicationContext(); 

     String outPath = mContext.getExternalStorageDirectory(null).getAbsolutePath() + "/" +"a1.jpg";

錯誤：方法getExternalStorageDirectory（）是未定義的類型上下文getExternalStorageDirectory（）不被識別

String outPath = mContext.getExternalFilesDir("mnt/sdcard").getAbsolutePath() + "/" +"a1.jpg";

工作正常..

來源

2012-06-22 Amel Jose

其靜態的環境類沒有上下文http://stackoverflow.com/questions/5453708/android-how-to-use-environment- getexternalstoragedirectory – Slartibartfast

使用

String outPath = Environment.getExternalStorageDirectory(null).getAbsolutePath() + "/" +"a1.jpg";

，而不是

String outPath = mContext.getExternalStorageDirectory(null).getAbsolutePath() + "/" +"a1.jpg";

來源

2012-06-22 15:39:37

getExternalStorageDirectory()沒有爲語境類型定義的。它在Environment類中定義，它是一種靜態方法。

來源

2012-06-22 15:34:20 nullpotent

getExternalStorageDirectory（）不被識別

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