如何在使用字符串的每个位置更新字符串的值

Question

Like after adding some new data we're doing adapter.notifyDataSetChanged() how can we update string's value so that it would be changed in every place it's used

For example:

String s;//Declared at beginning
onCreate(){
    textview.setText(s);
}
public void change(){
    s="Hello";
}

Now how the value of s can be updated inside onCreate() I've tried to use s.notify() but it's showing following error

java.lang.IllegalMonitorStateException: object not locked by thread before notify()

Answer 1

The better pattern over here is implementing a Setter for s .

private String s;//Declared at beginning
private void setS(string s) {
    this.s = s;
    textView.setText(s);
}

onCreate(){
    setS("Initial Value") ;
}

public void change(){
    setS("Hello");
}