聲明TextView爲最後

Question

對不起，noob android dev在這裏，我想了解爲什麼eclipse希望我的TextView被聲明爲final。

TheStack theStack = new TheStack(10); 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    TextView display = (TextView) findViewById(R.id.tv1); 
    Button b0 = (Button) findViewById(R.id.b0); 

    b0.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      theStack.push("0"); 
      display.setText(theStack.getStack()); 
     } 
    }); 

} 

Answer 1

簡短的回答：因爲你在內部類使用display。

長答案：Why are only final variables accessible in anonymous class?