类要么必须声明为抽象或实现抽象方法 [英] Class must either be declared abstract or implement abstract method

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问题描述

我发现在GitHub上一个小型的Deezer的球员,但我认为它已经在Eclipse codeD。然而,我在Android中工作室工作。

I have found a mini Deezer player on github, but I think it's been coded in Eclipse. I however work in Android Studio.

Beeing我的第一个Android应用它必须是一个noob问题,但我被困在这:

Beeing my first Android app it must be a noob question, but I am stuck on this:

`私人DialogListener mDeezerDialogListener =新的 DialogListener (){

` private DialogListener mDeezerDialogListener = new DialogListener() {

            @Override
            public void onComplete(Bundle values) {
                // store the current authentication info 
                SessionStore sessionStore = new SessionStore();
                sessionStore.save(mDeezerConnect, LoginActivity.this);

                // Launch the Home activity
                Intent intent = new Intent(LoginActivity.this, HomeActivity.class);
                startActivity(intent);
            }

            @Override
            public void onDeezerError(final DeezerError deezerError) {
                Toast.makeText(LoginActivity.this, R.string.deezer_error_during_login,
                        Toast.LENGTH_LONG).show();
            }

            @Override
            public void onError(final DialogError dialogError) {
                Toast.makeText(LoginActivity.this, R.string.deezer_error_during_login,
                        Toast.LENGTH_LONG).show();
            }

            @Override
            public void onCancel() {
                Toast.makeText(LoginActivity.this, R.string.login_cancelled, Toast.LENGTH_LONG).show();
            }

            @Override
            public void onOAuthException(OAuthException oAuthException) {
                Toast.makeText(LoginActivity.this, R.string.invalid_credentials, Toast.LENGTH_LONG)
                        .show();
            }
        };`

粗体功能是给我其内容的错误:

The bold function is giving me an error which reads:

班从DialogListener派生的匿名类'必须是
  声明抽象或实现抽象方法
  在DialogListener'onException的(异常)。

Class 'Anonymous class derived from DialogListener' must either be declared abstract or implement abstract method 'onException(Exception)' in 'DialogListener'.

我不知道是什么问题,而是雪上加霜,一切都很好,第一@Override,但第二,第三和最后一个给我这个错误:

I have no idea what is the problem, but to add insult to injury, all is well with the first @Override, but the second, the third and the last one give me this error:

错误:(91 17)错误:方法不覆盖或实现方法
  从超

Error:(91, 17) error: method does not override or implement a method from a supertype

这应该是一个工作code片段,还等什么这里的问题是,为什么在一些@Overrides的投诉呢?

This is supposed to be a working code snippet, so what is the problem here, why the complaints on some of the @Overrides?

连接这两个错误?

EDIT1:

至于建议我增加了一个功能:

As suggested I added another function:

@Override
            public void onException(Exception exception) {

            }

和第一个错误就走开了。会不会是github上原来的code是为SDK的previous版本,diferently没有东西写的?

and the first error went away. Could it be that the original code on github was written for a previous version of SDK, that did stuff diferently?

@Override错误留了下来。但据我所看到的,这些都是onException的子例外?

@Override errors stayed. but as far as I can see, those are sub-exceptions of onException?

EDIT2:

这是在Deezer SDK中定义:

This is defined in the Deezer SDK:

import com.deezer.sdk.network.connect.event.DialogListener; 

我在看他们的文档,并在方法摘要中提到:
onCancel()
的onComplete(束值)
onException的(例外的例外)

它还说:
onException的无效(异常除外)时,异常在验证过程中被抛出被调用。

以下例外情况可能会提出:
OAuthException
DeezerError
DialogError

The following exceptions may be raised : OAuthException, DeezerError, DialogError.

我想我会在这里发布的所有附加数据。

I think I will post all additional data here.

EDIT3:

这是我如何重写了code:

This is how I rewrote the code:

@Override
    public void onException(Exception exception) {

        if(exception instanceof DeezerError){
            Toast.makeText(LoginActivity.this, R.string.deezer_error_during_login,
                    Toast.LENGTH_LONG).show();
        }
        else if(exception instanceof DialogError){
            Toast.makeText(LoginActivity.this, R.string.deezer_error_during_login,
                    Toast.LENGTH_LONG).show();    
        }
        else if(exception instanceof OAuthException){
            Toast.makeText(LoginActivity.this, R.string.invalid_credentials, Toast.LENGTH_LONG)
                    .show();    
        }
        else{
            //not implemented?
        }

    }

发出警告:条件异常的instanceof OAuthException始终是假

Gives a warning: Condition 'exception instanceof OAuthException' is always 'false'.

我将不得不对这项工作,但是这是现在不同的问题。

I will have to work on that, but this is now a different question.

谢谢你们!

推荐答案

正如您在您的评论提到,该文档的Deezer说,DialogListener有3种方法:
onCancel()的onComplete(束值),onException的(例外的例外)。

As you mention in your comment, the Deezer doc says that DialogListener has 3 methods: onCancel(), onComplete(Bundle values), onException(Exception exception).

所以,你必须实现只有这3个功能。

So you have to implements ONLY these 3 functions.

        @Override
        public void onComplete(Bundle values) {
            // store the current authentication info 
            SessionStore sessionStore = new SessionStore();
            sessionStore.save(mDeezerConnect, LoginActivity.this);

            // Launch the Home activity
            Intent intent = new Intent(LoginActivity.this, HomeActivity.class);
            startActivity(intent);
        }


        @Override
        public void onCancel() {
            Toast.makeText(LoginActivity.this, R.string.login_cancelled, Toast.LENGTH_LONG).show();
        }

        @Override
        public void onException(Exception e) {
          //    ...
        }

和删除其他方法:onError的,等等。也许你的例子,正如你提到的,对于SDK的另一个版本。

And remove the other methods: onError, etc. Maybe you example, as you suggest, is for another version of the SDK.

请注意:我不使用Android的工作室,但在Eclipse你有一个命令来自动创建需要的方法(空,以提'TODO')。也许同样存在于Android的工作室?

Note: I don't use Android Studio, but in Eclipse you have a command to automatically create needed methods (empty, with mention 'TODO'). Maybe the same exists in Android Studio?

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