如何判別r1（RadioButton1）被勾選或取消勾選後的事件

語法：if((r1.isChecked())==true){}esle{}

範例：

//宣告各種元件變數
RadioButton  r0 = (RadioButton) findViewById(R.id.radio0);
RadioButton  r1 = (RadioButton) findViewById(R.id.radio1);

 

// 判斷選擇哪個RadioButton元件
if (checkedId == r0.getId())                
...............	
else if (checkedId == r1.getId()) 
...............