getOutputMediaFile.java

/** Create a File for saving an image or video */
private File getOutputMediaFile(){
    // To be safe, you should check that the SDCard is mounted
    // using Environment.getExternalStorageState() before doing this.
    // p.s: MODIFY THE PATH YOU WANT YOUR IMAGE TO STORE HERE
    // 嗨嗨如果你想改儲存路徑記得改這邊
    // for example, you can just using this way to save image into the root of sdcard
    // File mediaStorageDir = new File(Environment.getExternalStorageDirectory().toString());
    File mediaStorageDir = new File(Environment.getExternalStorageDirectory()
            + "/Android/data/"
            + getApplicationContext().getPackageName()
            + "/Files"); 
    // This location works best if you want the created images to be shared
    // between applications and persist after your app has been uninstalled.
    // Create the storage directory if it does not exist
    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            return null;
        }
    } 
    // Create a media file name
    String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
    File mediaFile;
        String mImageName="MI_"+ timeStamp +".jpg";
        mediaFile = new File(mediaStorageDir.getPath() + File.separator + mImageName);  
    return mediaFile;
}