android - 更新用户的个人资料图片

我正在制作一个应用程序，在这里我使用图像加载框架从服务器下载图像把网址放在缓存中…现在我希望用户的个人资料图片更新，但即使更新了服务器上的个人资料图片，它也不会显示在应用程序中。应用程序正在显示用户的旧个人资料图片。为什么会出现这个问题，我该如何解决？？请尽快帮忙。如果这对我有帮助的话，也可以发布链接。
提前谢谢！！！！
更新onclick的代码：

update_profile_pic.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        v.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
        String value_for_test="delete";
        Toast.makeText(getBaseContext(), "it works", Toast.LENGTH_SHORT).show();
        Intent i=new Intent(getApplicationContext(),ProfilePictureCaptureHomeActivity.class);
        i.putExtra("image",value_for_test);
        startActivity(i);

个人资料图片截图主页

DBAdapter db = new DBAdapter(getApplicationContext());
db.open();
if (null == phoneNumber)
{
    Cursor c = db.getUserInfo();
    phoneNumber = c.getString(0);
    imageUrl = c.getString(1);

    System.out.println("the imageUrl is"+imageUrl);
    c.close();
}
setContentView(R.layout.profilepic_capture);
if (null == imageUrl)
{
    Cursor imageUrlObj = db.getUserInfo();
    imageUrl = imageUrlObj.getString(1);
    System.out.println("the imageurl is"+imageUrl);

    imageUrlObj.close();
}
db.close();

更新个人资料图片：

if(image!=null){
    Toast.makeText(getApplicationContext(), "Redirected", Toast.LENGTH_LONG).show();
    imageUrl=null;
}
if(imageUrl != null)
{
    Intent uploadimg = new Intent(ProfilePictureCaptureHomeActivity.this,ListeningAndSharingHomeActivity.class);
    uploadimg.putExtra("phoneNumber", phoneNumber);
    startActivity(uploadimg);
}
else
{
    Log.v("ProfilePictureCaptureHomeActivity", "Staying Here");
}

_gallerybutton = (ImageButton) findViewById(R.id.btn_gallery);
_photobutton = (ImageButton) findViewById(R.id.btn_photo);
System.out.println("here in popup phoneeeeee" + phoneNumber);
System.out.println("here in flag************" + firstUpload);

_gallerybutton.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        v.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
        System.out.println("here in galleryyyyyyyyyy");
        Intent uploadimg = new Intent(ProfilePictureCaptureHomeActivity.this,ProfilePicFromGallery.class);
        uploadimg.putExtra("phoneNumber", phoneNumber);
        startActivity(uploadimg);
    }
});

_photobutton.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        v.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
        System.out.println("here in take piccccc");
        Intent capIntent = new Intent(ProfilePictureCaptureHomeActivity.this,ProfilePicFromCamera.class);
        startActivity(capIntent);
    }
});

最佳答案

看看这个代码。

private  String deleteExistingFile(String url , Context context)
{


    String SaveFolderName = context.getFilesDir().getAbsolutePath()  + "/yourinternalmemoryfolder";

    String  str_randomnumber= url.substring(url.lastIndexOf("/") + 1);
    File wallpaperDirectory = new File(SaveFolderName);
        if (!wallpaperDirectory.exists())
        wallpaperDirectory.mkdirs();
    String  Photo_ImagePath=SaveFolderName+"/" + str_randomnumber ;


    String result = "";
    System.out.println("file path to be deleted " + Photo_ImagePath);

         File f = new File(Photo_ImagePath);
          if (f.exists())
          {
              System.out.println(" EEEEEEEEEEXXXXXXXXIIIIISSSSSSSTTTTTTT ");
          try {
            if(f.delete() == true){
                result = "Success";
            }else{
                result = "Failure";
            }

          }

          catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();

            return "Error";
        }

          }

          System.out.println("deleting existing file " + result);
        return result;

}