我动态地在一个广播组中创建了两个单选按钮,并检查其中一个按钮。
我需要当我扯下另一个按钮然后它的值应保存在字符串中。
但是我已经为此实施了checkedchangelistener
。但它没有第一次工作。
这是我的代码。
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");
}
答案 0 :(得分:4)
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();
}
});
}
}
答案 1 :(得分:3)
尝试以下代码
radiogroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
int id=group.getCheckedRadioButtonId();
RadioButton rb=(RadioButton) findViewById(id);
OR
RadioButton rb=(RadioButton) findViewById(checkedId);
String radioText=rb.getText().toString();
}
});
答案 2 :(得分:1)
试试这个......
radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
RadioButton radioButton = (RadioButton) group.findViewById(checkedId);
String text = radioButton.getText().toString();
updated_list.add(text);
}
});
答案 3 :(得分:0)
尝试使用此解决方案来检索文本:
radiogroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
void onCheckedChanged(RadioGroup rg, int checkedId) {
for (int i = 0; i < rg.getChildCount(); i++) {
RadioButton btn = (RadioButton) rg.getChildAt(i);
if (btn.getId() == checkedId) {
String text = btn.getText();
// do something with text
return;
}
}
}
});
答案 4 :(得分:0)
用于从 Fragment 中的 RadioGroup 获取文本的 Kotlin 版本如下:
private lateinit var genderRadioGroup: RadioGroup
genderRadioGroup = rootView.gender_radio_grp
val selectedRadioButton: Int = genderRadioGroup.checkedRadioButtonId
radioButton = rootView.findViewById(selectedRadioButton)
Toast.makeText(context, "Selected gender is ${radioButton.text}", Toast.LENGTH_SHORT).show()
(P.S. 我使用 Android 扩展来获取视图的引用)
答案 5 :(得分:0)
radioGroup.setOnCheckedChangeListener { group, checkedId ->
group.findViewById<AppCompatRadioButton>(checkedId)?.let { radioButton ->
val textFromButtonLabel = radioButton.text.toString()
}
}
答案 6 :(得分:0)
用于从 RadioGroup 中选中的 RadioButton 检索文本的 Kotlin 代码
binding.genderRadiogroup.setOnCheckedChangeListener { _, _ ->
var id: Int = binding.genderRadiogroup.checkedRadioButtonId
var rb: RadioButton = binding.genderRadiogroup.findViewById(id)
Toast.makeText(this,rb.text.toString(),Toast.LENGTH_SHORT).show()
}