java oddg 类型的方法 onClick(View) 必须覆盖超类方法吗？
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The method onClick(View) of type oddg must override a superclass method?
提问by Smith
I am occurring error like:
我正在发生错误，例如：
"The method onClick(View) of type oddg must override a superclass method".
“oddg 类型的 onClick(View) 方法必须覆盖超类方法”。
I am confused where exactly error has occurred. Can you please guide me, what exactly error is?
我很困惑到底发生了什么错误。你能指导我，究竟是什么错误？
public class oddg extends Activity implements OnClickListener
{
ProgressDialog dialog;
int increment;
int maximum ;
private static final String TAG = "ServicesDemo";
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
Button startbtn = (Button) findViewById(R.id.startbtn);
startbtn.setOnClickListener(this);
}
@Override
public void onClick(View arg0)
{ }
}
This is my code... Thanks in Advance-- Onkar
这是我的代码......提前致谢 - Onkar
回答by RoflcoptrException
I think the problem is that you're compiler settings are set to Java 1.5 instead of Java 1.6. Since Java 1.6 the annotation @Override is not only possible for inherited methods from a superclass but also for implemented methods from an interface. But if your compiler is still set to 1.5 the problem is that he will check if you're overwriting a method from a super class. In your example this is not the case since you're implementing a method from an interface.
我认为问题在于您将编译器设置设置为 Java 1.5 而不是 Java 1.6。从 Java 1.6 开始，@Override 注释不仅适用于从超类继承的方法，也适用于来自接口的实现方法。但是如果你的编译器仍然设置为 1.5，问题是他会检查你是否覆盖了一个超类的方法。在您的示例中，情况并非如此，因为您是从接口实现方法。
As a side note it would be good to follow Java Naming Conventionsin your code. So all classes begin with an upper case letter.
作为旁注，在您的代码中遵循Java 命名约定会很好。所以所有的类都以大写字母开头。
回答by Dmitry Nelepov
I had the same trouble and I fixed it like this:
我遇到了同样的问题，我是这样解决的：
- Open Project settings->Java Compiler
- Set Enable Project Specific Settingsto
disable
- 打开项目设置->Java 编译器
- 将启用项目特定设置设置为
disable
回答by Kev Moor
This isn't directly appropriate to this question but you will also get this error if you haven't declared implements OnClickListeneron the class declaration.
这并不直接适用于这个问题，但如果您没有implements OnClickListener在类声明中声明，您也会收到此错误。
// Wrong
public class aClass extends Activity {
}
// Right
public class aClass extends Activity implements OnClickListener {
}
This may seem dum to the more experienced coder but I'm new to this and it fooled me.
对于更有经验的编码员来说，这似乎很愚蠢，但我对此并不陌生，它愚弄了我。
回答by Vladimir Ivanov
Read about @Overrideannotation. It means, that once you have annotated the method with @Override, the compiler checks if it really an overrided method, and shows an error if its not.
阅读@Override注释。这意味着，一旦你用 注释了方法@Override，编译器就会检查它是否真的是一个被覆盖的方法，如果不是，则显示一个错误。
Also, you have to have Language Level 6 in order to use it with interface implementing methods. In IDEA you can do it via Project Setup.
此外，您必须拥有语言级别 6 才能将其与接口实现方法一起使用。在 IDEA 中，您可以通过项目设置来完成。
回答by Pablo
I had the same problem. I found the solution writing well the import.
我有同样的问题。我发现解决方案写得很好导入。
I replaced
我换了
import android.content.DialogInterface.OnClickListener; //(wrong)
for
为了
import android.view.View.OnClickListener;
回答by Kushagra Sharma
If you are using android studio , you can also override your method by pressing ctrl+Oor just go to code-> Overideand override appropriate method . It will automatically override your method .
如果您使用的是 android studio，您还可以通过按ctrl+O来覆盖您的方法，或者只需转到代码->覆盖并覆盖适当的方法。它会自动覆盖您的方法。
回答by jiangws88
"RoflcoptrException" is right! You shoud set java compiler to 1.6 Project properties -> Java compiler ->1.6
“RoflcoptrException”是对的！您应该将 java compiler 设置为 1.6 Project properties -> Java compiler ->1.6
