Eclipse DisplayMessageActivity錯誤

Question

我對Eclipse中出現的錯誤有疑問。 Eclipse中說，「嵌套式DisplayMessageActivity不能隱藏封閉類型」

這是我的腳本：

包com.example.warzonegaming;

公共類DisplayMessageActivity { 公共類DisplayMessageActivity延伸活動{

@SuppressLint("NewApi") 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     // Get the message from the intent 
     Intent intent = getIntent(); 
     String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE); 

     // Create the text view 
     TextView textView = new TextView(this); 
     textView.setTextSize(40); 
     textView.setText(message); 

     // Set the text view as the activity layout 
     setContentView(textView); 



     // Make sure we're running on Honeycomb or higher to use ActionBar APIs 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
      // Show the Up button in the action bar. 
      getActionBar().setDisplayHomeAsUpEnabled(true); 


     } 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
     case android.R.id.home: 
      NavUtils.navigateUpFromSameTask(this); 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 
} 

}

是否有人知道此一修正，因爲我不能再走到現在。

Regards

Answer 1

嘗試瞭解javapackage的基礎知識com.example.warzonegaming;

public class DisplayMessageActivity extends Activity { 

    @SuppressLint("NewApi") 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     // Get the message from the intent 
     Intent intent = getIntent(); 
     String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE); 

     // Create the text view 
     TextView textView = new TextView(this); 
     textView.setTextSize(40); 
     textView.setText(message); 

     // Set the text view as the activity layout 
     setContentView(textView); 



     // Make sure we're running on Honeycomb or higher to use ActionBar APIs 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
      // Show the Up button in the action bar. 
      getActionBar().setDisplayHomeAsUpEnabled(true); 


     } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
     case android.R.id.home: 
      NavUtils.navigateUpFromSameTask(this); 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

}