我在执行以下代码时遇到错误
Error:The specified child already has a parent you must call removeView on the child's parent first
任何人都可以帮我解决这个问题 代码：
RadioButton[] radiobutton = new RadioButton[5];
RadioGroup radiogroup = new RadioGroup(this);
for (int i = 0; i < 5; i++) {
LinearLayout listmainLayout = (LinearLayout) findViewById(R.id.phonelist);
// listmainLayout.setLayoutParams(new
// ListView.LayoutParams(width,
// height / 10));
listmainLayout.setGravity(Gravity.CENTER_VERTICAL);
RelativeLayout mainlistLayout = new RelativeLayout(
getApplicationContext());
LinearLayout.LayoutParams mainlistLayoutParams = new LinearLayout.LayoutParams(
(int) (width * 0.85), LayoutParams.WRAP_CONTENT);
mainlistLayout.setLayoutParams(mainlistLayoutParams);
// mainlistLayout.setOrientation(LinearLayout.VERTICAL);
mainlistLayout.setPadding((int) (0.03 * width), 0, 0, 0);
LinearLayout.LayoutParams radiogroupparams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
radiogroup.setLayoutParams(radiogroupparams);
radiobutton[i] = new RadioButton(this);
radiobutton[i].setText(" " + ContactsActivity.phonetype.get(i)
+ " " + ContactsActivity.phone.get(i));
radiobutton[i].setId(i + 100);
radiogroup.removeView(radiobutton[i]);
radiogroup.addView(radiobutton[i]);
mainlistLayout.addView(radiogroup);
我的logcat显示：
11-12 17:51:11.500: E/AndroidRuntime(3353): FATAL EXCEPTION: main
11-12 17:51:11.500: E/AndroidRuntime(3353): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.contacts_appetite/com.example.contacts_appetite.ContactDetalisList}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread.access$600(ActivityThread.java:130)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.os.Looper.loop(Looper.java:137)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread.main(ActivityThread.java:4745)
11-12 17:51:11.500: E/AndroidRuntime(3353): at java.lang.reflect.Method.invokeNative(Native Method)
11-12 17:51:11.500: E/AndroidRuntime(3353): at java.lang.reflect.Method.invoke(Method.java:511)
11-12 17:51:11.500: E/AndroidRuntime(3353): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-12 17:51:11.500: E/AndroidRuntime(3353): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-12 17:51:11.500: E/AndroidRuntime(3353): at dalvik.system.NativeStart.main(Native Method)
11-12 17:51:11.500: E/AndroidRuntime(3353): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.view.ViewGroup.addViewInner(ViewGroup.java:3378)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.view.ViewGroup.addView(ViewGroup.java:3249)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.view.ViewGroup.addView(ViewGroup.java:3194)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.view.ViewGroup.addView(ViewGroup.java:3170)
11-12 17:51:11.500: E/AndroidRuntime(3353): at com.example.contacts_appetite.ContactDetalisList.getView(ContactDetalisList.java:139)
11-12 17:51:11.500: E/AndroidRuntime(3353): at com.example.contacts_appetite.ContactDetalisList.onCreate(ContactDetalisList.java:65)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.Activity.performCreate(Activity.java:5008)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
11-12 17:51:11.500: E/AndroidRuntime(3353): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
11-12 17:51:11.500: E/AndroidRuntime(3353): ... 11 more
答案 0 :(得分：44)
此The specified child already has a parent. You must call removeView() on the child's parent first.因为您要多次将子（广播组）添加到父版式。
试试这个
private void createRadioButton() {
final RadioButton[] rb = new RadioButton[5];
RadioGroup rg = new RadioGroup(this); //create the RadioGroup
rg.setOrientation(RadioGroup.HORIZONTAL);//or RadioGroup.VERTICAL
for(int i=0; i<5; i++){
rb[i] = new RadioButton(this);
rb[i].setText(" " + ContactsActivity.phonetype.get(i)
+ " " + ContactsActivity.phone.get(i));
rb[i].setId(i + 100);
rg.addView(rb[i]);
}
ll.addView(rg);//you add the whole RadioGroup to the layout
}
答案 1 :(得分：13)
这是我的源代码，
首先创建字符串数组
<string-array name="websites_array">
<item>Yahoo</item>
<item>Hotmail</item>
<item>Gmail</item>
<item>Facebook</item>
<item>Other</item>
</string-array>
然后在源代码中
final RadioGroup radioGrp = (RadioGroup) findViewById(R.id.radioGroup);
//get string array from source
String[] websitesArray = getResources().getStringArray(R.array.websites_array);
//create radio buttons
for (int i = 0; i < websitesArray.length; i++) {
RadioButton radioButton = new RadioButton(this);
radioButton.setText(websitesArray[i]);
radioButton.setId(i);
radioGrp.addView(radioButton);
}
//set listener to radio button group
radioGrp.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
int checkedRadioButtonId = radioGrp.getCheckedRadioButtonId();
RadioButton radioBtn = (RadioButton) findViewById(checkedRadioButtonId);
Toast.makeText(ConfigurationActivity.this, radioBtn.getText(), Toast.LENGTH_SHORT).show();
}
});
这就是......：）
答案 2 :(得分：3)
试试这个
RadioButton[] radiobutton = new RadioButton[5];
final RadioGroup radiogroup = new RadioGroup(this);
LinearLayout listmainLayout = (LinearLayout) findViewById(R.id.phonelist);
// listmainLayout.setLayoutParams(new
// ListView.LayoutParams(width,
// height / 10));
listmainLayout.setGravity(Gravity.CENTER_VERTICAL);
RelativeLayout mainlistLayout = new RelativeLayout(
getApplicationContext());
LinearLayout.LayoutParams mainlistLayoutParams = new LinearLayout.LayoutParams(
(int) (width * 0.85), LayoutParams.WRAP_CONTENT);
mainlistLayout.setLayoutParams(mainlistLayoutParams);
// mainlistLayout.setOrientation(LinearLayout.VERTICAL);
mainlistLayout.setPadding((int) (0.03 * width), 0, 0, 0);
LinearLayout.LayoutParams radiogroupparams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
radiogroup.setLayoutParams(radiogroupparams);
for (int i = 0; i < 5; i++) {
radiobutton[i] = new RadioButton(this);
radiobutton[i].setText(" " + ContactsActivity.phonetype.get(i)
+ " " + ContactsActivity.phone.get(i));
radiobutton[i].setId(i + 100);
radiogroup.addView(radiobutton[i]);
mainlistLayout.addView(radiogroup);
}
答案 3 :(得分：0)
将数组添加到strings.xml：
<string-array name="some_array">
<item>some_item_0</item>
<item>some_item_1</item>
<item>some_item_2</item>
</string-array>
我认为你不需要id而是需要每个按钮的文本，所以放在这个方法的某个地方（在我的例子中这是Utils类）：
public static void fillRadioGroup(Context context, RadioGroup radioGroup, int stringArrayId){
for (String s : context.getResources().getStringArray(stringArrayId)){
RadioButton radioButton = new RadioButton(context);
radioButton.setText(s);
radioGroup.addView(radioButton);
}
if(radioGroup.getChildCount() > 0)
radioGroup.check(radioGroup.getChildAt(0).getId());
}
然后你可以打电话给它：
Utils.fillRadioGroup(this, radioGroup, R.array.some_array);
要获取您需要致电的短信：
if(radioGroup.getChildCount() > 0)
String text = ((RadioButton) findViewById(radioGroup.getCheckedRadioButtonId())).getText().toString();
答案 4 :(得分：0)
class RadioButtonsGroup {
private val buttons = ArrayList<RadioButton>()
fun add(radioButton: RadioButton) {
buttons.add(radioButton)
radioButton.setOnClickListener {
for (button in buttons) {
if (radioButton !== button) {
button.isChecked = false
}
}
radioButton.isChecked = true
}
}
}
答案 5 :(得分：0)
String selectedValue = "";
LinearLayout linearLayout = findViewById(R.id.linearLayout);
RadioGroup radioGroup = new RadioGroup(this);
ArrayList<String> arrayList; //or replace your list here
arrayList.add("Apple");
arrayList.add("Melon");
for (int i = 0; i < arrayList.size(); i++){
RadioButton radioButton = new RadioButton(this);
radioButton.setText(arrayList.get(i));
radioGroup.addView(radioButton);
int keyI = i;
radioButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (radioButton.isChecked()){
selectedValue = arrayList.get(keyI);
Toast.makeText(AnActivity.this,selectedValue, Toast.LENGTH_SHORT).show();
}
}
});
}
linearLayout.addView(radioGroup);
//to do with updated selectedValue