TextView always showing value as “0” on UI

问题

I am using a simple TextView and updating its value in onPostExecute of a AsyncTask. But every time its showing "0" on UI.

My code is:

TextView tv = (TextView)findViewById(R.id.tv);
tv.setText(calculation());


private int calculation(){
return output;
}

What is going wrong here, no error comming in stack trace? please help me?

回答1:

Your code tv.setText(calculation()); tryind to take string from Resourses cause you set value as int.

Use tv.setText(String.valueOf(calculation()));

回答2:

try this

tv.setText(calculation()+"");

As TextView only accept string in settext, Adding +"" to int will make it as string. and make sure that your method is returning the right value.

来源：https://stackoverflow.com/questions/27226834/textview-always-showing-value-as-0-on-ui