Creating RadioGroup programmatically

Question

I'm getting an Error while working with the following code

Error: The specified child already has a parent you must call removeView on the child's parent first

Anyone please help me in resolving this Error:

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); } 

My logcat shows:

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 

Answer 1

this The specified child already has a parent. You must call removeView() on the child's parent first. because you are adding child( radio group ) to the parent layout multiple times.

try like this

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  }