"EditText和TextView"在android中用数千个分隔符(,)格式化

Question

当我在editText中输入时,我想在EditText中使用千位分隔符(,).之后,我将对数字进行一些操作.然后在千万分隔符(,)的TextView中显示结果.

这是我的代码:

public class Mainactivity extends Activity {

/** Called when the activity is first created. */

EditText        edt;
TextView        txt;
Button          btn;

OnClickListener myclick = new OnClickListener() {

                            @Override
                            public void onClick(View arg0) {

                                // my calculation
                                double num1 = Double.parseDouble(edt.getText().toString());
                                double num2 = num1 + 7;

                                txt.setText("" + num2);

                            }
                        };


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    edt = (EditText) findViewById(R.id.edt);
    txt = (TextView) findViewById(R.id.txt);
    btn = (Button) findViewById(R.id.btn);

    btn.setOnClickListener(myclick);

}

}

Answer 1

您可以使用

String value=String.format("%,.2f", num );

使用千位分隔符将数字解析为String,然后将结果设置为所需的TextView或EditText

例如 :

txt.setText(String.format("%,.2f", num ));
edt.setText(String.format("%,.2f", num ));