我正在将工作应用程序转换为片段。我的复选框列表没有显示标签，我猜是 id。我是 Android/Java 新手，这是我在 Stackoverflow 上的第一篇文章，如果问题很简单或没有遵循正确的协议，我深表歉意。
我的 ListFragment 如下：
import java.util.ArrayList;
import java.util.List;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
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.CheckBox;
import android.widget.TextView;
public class DistributionTransFragment extends ListFragment {
protected TextView subheader;
protected Context mContext;
protected DatabaseHandler db;
protected String user_id;
protected String user;
protected String recipients;
protected int number;
protected LayoutInflater inflater;
protected View v;
DistributionArrayAdapter dataAdapter = null;
public DistributionTransFragment(){
super();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
v = inflater.inflate(R.layout.distribution_fragment, container, false);
mContext = getActivity().getApplicationContext();
db = new DatabaseHandler(mContext);
subheader = (TextView)v.findViewById(R.id.textView2);
subheader.setText("Spent On?");
displayListView();
checkButtonClick();
return v;
}
private void displayListView() {
ArrayList<Participant> distributionList = new ArrayList<Participant>();
Participant participant;
List<User> users = db.getAllUsers();
for (User u : users) {
user_id = String.valueOf(u.getID());
user = u.getUser();
participant = new Participant(user_id, user, false);
distributionList.add(participant);
}
//create an ArrayAdaptar from the String Array
dataAdapter = new DistributionArrayAdapter(mContext, R.layout.distributionlist, distributionList);
setListAdapter(dataAdapter);
}
private class DistributionArrayAdapter extends ArrayAdapter<Participant> {
private ArrayList<Participant> distributionList;
public DistributionArrayAdapter(Context context, int textViewResourceId, ArrayList<Participant> distributionList) {
super(context, textViewResourceId, distributionList);
this.distributionList = new ArrayList<Participant>();
this.distributionList.addAll(distributionList);
}
private class ViewHolder {
TextView code;
CheckBox name;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
Log.v("ConvertView", String.valueOf(position));
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.distributionlist, null);
holder = new ViewHolder();
holder.code = (TextView) convertView.findViewById(R.id.code);
holder.name = (CheckBox) convertView.findViewById(R.id.checkBox1);
convertView.setTag(holder);
Log.d("HOLDER CODE", (holder.code).toString());
holder.name.setOnClickListener( new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v ;
Participant participant = (Participant) cb.getTag();
participant.setSelected(cb.isChecked());
}
});
} else {
holder = (ViewHolder) convertView.getTag();
}
Participant participant = distributionList.get(position);
holder.name.setText(participant.getName());
holder.name.setChecked(participant.isSelected());
holder.name.setTag(participant);
return convertView;
}
}
private void checkButtonClick() {
Button myButton = (Button) v.findViewById(R.id.button1);
myButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final ArrayList<Participant> distributionList = dataAdapter.distributionList;
// Do Stuff
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setMessage(tempTransaction);
builder.setCancelable(false);
builder.setPositiveButton("Commit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Do More Stuff
Intent intent = new Intent(mContext, Home.class);
startActivity(intent);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Do Other Stuff
Intent intent = new Intent(mContext, Home.class);
startActivity(intent);
}
});
AlertDialog alert = builder.create();
alert.show();
}
});
}
}
我的列表 XML 如下：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@color/white"
android:padding="15dip" >
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:focusable="false"
android:focusableInTouchMode="false" />
<TextView
android:id="@+id/code"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/checkBox1"
android:layout_alignBottom="@+id/checkBox1"
android:layout_toRightOf="@+id/checkBox1"
android:textSize="15sp" />
</RelativeLayout>
我的片段 XML 如下：
<?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"
android:background="@color/grey">
<RelativeLayout
android:id="@+id/subheader"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/secondheader"
android:orientation="vertical" >
<TextView
android:id="@+id/textView2"
style="@style/subheader" />
<TextView
android:id="@+id/textView3"
style="@style/info" />
</RelativeLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/subheader"
android:layout_above="@+id/footer"
android:orientation="vertical" >
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:id="@id/footer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@color/grey"
android:layout_alignParentBottom="true" >
<Button
android:id="@+id/button1"
style="@style/button.form"
android:text="@string/moneyspent" />
</LinearLayout>
</RelativeLayout>
任何帮助将不胜感激。