按下按钮后计算已选中复选框的百分比，并在另一个活动中显示百分比（android）

Question

I have a problem towards of calculating percentage of checked checkbox. My situation is, i have list of checkbox. after user press any checkbox, user should press calculate button. this calculate button will show another activity and also display percentage of checked checkbox. Can anyone help me?

percentage = (checked/total checkbox)*100

Answer 1

In Activity1,

Intent i = new Intent(getApplicationContext(), activity2.class);
i.putExtra("key", chkbox1.getText()); //pass chkbox1 value to another activity
startActivity(i);

In Activity2,

String chkbox1=getIntent().getExtras().getString("key");