android 变量定义与赋值
各位大虾,我是新手,请教下大家以下:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_escalculator);
daan = (TextView)findViewById(R.id.answer);
final String tmpanswer = "";
Button btn1 = (Button)findViewById(R.id.bt1);
btn1.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
String strtmp1 = "a";
tmpanswer=tmpanswer + strtmp1;
daan.setText(tmpanswer);
}
});
}
错提示:The final local variable tmpanswer cannot be assigned, since it is defined in an enclosing type
请问各位,我应该如何定义与赋值?