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我需要使用Java以編程方式創建多個複選框，檢查是否其中一個已選中，並且當我單擊時下一步按鈕控件將移至下一頁。如果沒有選中，則必須顯示Toast消息。請建議，因爲我是Android新手。在Android中使用Java以編程方式創建並驗證複選框
這裏是我的代碼：
public class TestValidCheckboxActivity extends Activity implements OnCheckedChangeListener{
private RelativeLayout layoutMiddle = null;
private TableLayout layout1;
private CheckBox chk;
private String[] resarr = {"silu", "pinky", "meera"};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
layoutMiddle = (RelativeLayout)findViewById(R.id.layoutMiddleUp);
layout1 = (TableLayout)findViewById(R.id.tableId1);
final Button btnNext = (Button)findViewById(R.id.btnNext);
int i = 0;
for(String res: resarr){
TableRow tr=new TableRow(this);
chk=new CheckBox(this);
chk.setId(i);
chk.setText(res);
chk.setTextColor(Color.BLACK);
tr.addView(chk);
i++;
RelativeLayout.LayoutParams lay = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);
lay.addRule(RelativeLayout.BELOW, layoutMiddle.getId());
layout1.addView(tr, lay);
}
chk.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
if (arg1)
{
btnNext.setOnClickListener(new View.OnClickListener() {
public void onClick(final View view) {
Log.e("1111111111","111111111");
if(chk.isChecked()){
Intent intent = new Intent(view.getContext(),NextPage.class);
startActivityForResult(intent, 0);
}else{
Toast msg = Toast.makeText(view.getContext(), "please choose at least one option", Toast.LENGTH_LONG);
msg.show();
}
}
});
}else{
Toast msg = Toast.makeText(TestValidCheckboxActivity.this, "please choose at least one option", Toast.LENGTH_LONG);
}
}
});
}
@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
}
}