更改单选按钮选中状态时如何从单选按钮组中的单选按钮获取文本
我在一个单选组中动态创建了两个单选按钮,其中一个被选中.当我检查另一个按钮时,我需要它的值应该保存在字符串中.但是我已经为此实现了 checkedchangelistener
.但它第一次不起作用.这是我的代码.
I have created two radio buttons in a radio group dynamically and one of them is checked.
I need when i cheked another button then its value should be saved in string.
But i have implemented checkedchangelistener
for this.But its not working first time.
Here is my code.
rg = ((RadioGroup)getActivity().findViewById(alist_id.get(i)));
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){
public void onCheckedChanged(RadioGroup rd, int checkedId) {
for(int i=0; i<rd.getChildCount(); i++) {
radio_button = (RadioButton) rd.getChildAt(i);
int id = radio_button.getId();
if(radio_button.getId() == checkedId) {
text = radio_button.getText().toString();
flag=true;
System.out.println("trueeeeeeeee"+text);
return;
}
}
}
});
if (flag==true) {
updated_list.add(text);
System.out.println("sssssssssssssssssss");
}else {
updated_list.add(data_from_list_view.get(i));
System.out.println("falseeeeeee");
}
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xml文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<RadioGroup
android:id="@+id/radioSex"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="@+id/radioMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_male"
android:checked="true" />
<RadioButton
android:id="@+id/radioFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_female" />
</RadioGroup>
<Button
android:id="@+id/btnDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn_display" />
</LinearLayout>
java代码
package com.mkyong.android;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MyAndroidAppActivity extends Activity {
private RadioGroup radioSexGroup;
private RadioButton radioSexButton;
private Button btnDisplay;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addListenerOnButton();
}
public void addListenerOnButton() {
radioSexGroup = (RadioGroup) findViewById(R.id.radioSex);
btnDisplay = (Button) findViewById(R.id.btnDisplay);
btnDisplay.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// get selected radio button from radioGroup
int selectedId = radioSexGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioSexButton = (RadioButton) findViewById(selectedId);
Toast.makeText(MyAndroidAppActivity.this,
radioSexButton.getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
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