java 为什么我不能覆盖 onConfigurationChanged？
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Why can't I override onConfigurationChanged?
提问by Ted
I'm trying to override the method onConfigurationChangedand I get the error:
我正在尝试覆盖onConfigurationChanged方法，但出现错误：
The method onConfigurationChanged(Configuration) of type BaseActivity must override or implement a supertype method
BaseActivity 类型的 onConfigurationChanged(Configuration) 方法必须覆盖或实现超类型方法
Here is my BaseActivity.java:
这是我的 BaseActivity.java：
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
public class BaseActivity extends Activity
{
protected View.OnClickListener mButtonListenerUPP;
protected View.OnClickListener mButtonListenerALT;
protected View.OnClickListener mButtonListenerNAV;
protected View.OnClickListener mButtonListenerHIS;
@Override
public void setContentView(int layoutResID)
{
super.setContentView(layoutResID);
}
@Override
public void onConfigurationChanged(Configuration newConfig)
{
setContentView(R.layout.main);
}
}
A lot of posts on the Internet are saying that I can override this method... Any ideas?
网上很多帖子都说我可以覆盖这个方法......有什么想法吗？
回答by Christopher Orr
Have you got android.content.res.Configurationin your import statements? Eclipse can insert imports automatically if you press Ctrl+Shift+O.
你有android.content.res.Configuration你的导入语句吗？如果您按 Ctrl+Shift+O，Eclipse 可以自动插入导入。
If that's missing, the compiler will be unable to recognise that you're legitimately overriding the superclass method and so will throw an error.
如果缺少，编译器将无法识别您正在合法地覆盖超类方法，因此会引发错误。
回答by drago-od
Let me guess. SuperNotCalledException.
让我猜猜。SuperNotCalledException。
@Override
public void onConfigurationChanged(Configuration newConfig)
{
super.onConfigurationChanged(newConfig); // add this line
setContentView(R.layout.main);
}
回答by manuel aldana
Maybe there is a problem with the @Override annotation. Are you sure that both methods annotated with @Override are defined in Activity?
可能@Override 注释有问题。你确定在Activity中定义了用@Override注解的两个方法吗？
If not you have to remove the respective @Override annotation.
如果不是，您必须删除相应的 @Override 注释。
