我正在处理的 android 应用程序中有一个非法参数异常。
我已经多次看到这个问题被问到，我自己在不同的情况下也遇到过几次这个问题。
本质上，我想要做的是让用户在一个片段（称为EditFragment）中按下一个按钮，然后将导致这个片段（OneVarCreatorFrag）。
我曾尝试使用人们在与此类似的问题中提出的一些技巧，但似乎没有人在我所拥有的确切上下文中遇到过这个问题。这是我的日志：
06-01 10:42:02.582: E/AndroidRuntime(625): java.lang.IllegalArgumentException: No view found for id 0x7f030002 for fragment OneVarCreatorFrag{4121c0f8 #1 id=0x7f030002}
id 0x7f030002 是一个布局。这是它的代码：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/one_var_textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="22dp"
android:text="One Variable list"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/one_var_editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/one_var_button2"
android:layout_centerHorizontal="true"
android:hint="Enter a number"
android:ems="10" />
<EditText
android:id="@+id/one_var_editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/one_var_textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:hint="Name of List"
android:ems="10" />
<Button
android:id="@+id/one_var_button3"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/one_var_editText2"
android:layout_below="@+id/one_var_editText2"
android:text="Create" />
<ListView
android:id="@+id/one_var_listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/one_var_button2" >
</ListView>
<Button
android:id="@+id/one_var_button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/one_var_listView1"
android:layout_toLeftOf="@+id/one_var_button2"
android:text="Add" />
<Button
android:id="@+id/one_var_button2"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/one_var_editText1"
android:layout_centerVertical="true"
android:text="Clear" />
</RelativeLayout>
“fragment OneVarCreatorFrag”是一个继承Fragment（不是支持版本）的类。这是代码：
import java.util.ArrayList;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class OneVarCreatorFrag extends Fragment{
private View view;
private Button add;
private Button create;
private Button clear;
private EditText name;
private EditText getNum;
private ListView listView;
private String temp;
private int index;
private boolean newListCreated;
private ArrayList<Double> numNums;
private ArrayAdapter adapter;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.one_var_creator, container, false);
add = (Button) view.findViewById(R.id.one_var_button1);
create = (Button) view.findViewById(R.id.one_var_button3);
clear = (Button) view.findViewById(R.id.one_var_button2);
name = (EditText) view.findViewById(R.id.one_var_editText2);
getNum = (EditText) view.findViewById(R.id.one_var_editText1);
numNums = new ArrayList<Double>();
adapter = new ArrayAdapter<Double>(view.getContext(), R.id.one_var_listView1, numNums);
create.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
temp = name.getText().toString();
MainActivity.metaList.add(new StatList(temp));
index = MainActivity.metaList.size()-1;
newListCreated = true;
}
});
add.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(newListCreated)
{
int tempNum = Integer.parseInt(getNum.getText().toString());
MainActivity.metaList.get(index).mainList.add(new Number(tempNum));
listView.toString();
popNumNums();
listView.setAdapter(adapter);
}
}
});
clear.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(newListCreated)
{
MainActivity.metaList.get(index).mainList.clear();
}
}
});
return view;
}
public void popNumNums(){
for(int k = 0; k < MainActivity.metaList.get(index).mainList.size(); k++)
{
numNums.add(MainActivity.metaList.get(index).mainList.get(k).quantity);
}
}
}
这是 EditFragment 代码：
包 com.statbot;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RadioButton;
public class EditFragment extends Fragment{
private Button create;
private RadioButton twoVar;
private RadioButton oneVar;
private ListView numView;
private View view;
public EditFragment(){
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.edit_layout, container, false);
create = (Button) view.findViewById(R.id.edit_frag_button1);
oneVar = (RadioButton) view.findViewById(R.id.edit_frag_radioButton1);
create.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if(oneVar.isChecked())
{
Fragment fragment = new OneVarCreatorFrag();
FragmentManager fm = getFragmentManager();
FragmentTransaction transaction = fm.beginTransaction();
transaction.replace(R.layout.one_var_creator, fragment);
transaction.commit();
}
}
});
return view;
}
}