這個是代碼，我都是照著示例做的，但還是不行，查了一天了，到底是哪里出問題呢

萬分感謝

package?cn.com.ava.lesson4_fancy_view;

import?android.content.Context;

import?android.os.Bundle;

import?android.app.Activity;

import?android.util.Log;

import?android.view.LayoutInflater;

import?android.view.Menu;

import?android.view.View;

import?android.view.ViewGroup;

import?android.widget.ArrayAdapter;

import?android.widget.Button;

import?android.widget.EditText;

import?android.widget.ImageView;

import?android.widget.ListView;

import?android.widget.RadioButton;

import?android.widget.RadioGroup;

import?android.widget.TextView;

import?android.widget.Toast;

import?java.util.ArrayList;

import?java.util.List;

import?cn.com.ava.lesson4_fancy_view.Model.Address;

public?class?MainActivity?extends?Activity?{

private?EditText?et_name;

private?EditText?et_address;

private?Button?bt_save;

private?RadioGroup?rg_types;

private?RadioButton?rb_take_out;

private?RadioButton?rb_sit_down;

private?RadioButton?rb_delivery;

private?ListView?lv_address;

private?ArrayAdapter

?adapter;

private?List

?listAddress?=?new?ArrayList();

private?static?final?String?TAG?=?"MainActivity";

@Override

protected?void?onCreate(Bundle?savedInstanceState)?{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

this.bt_save?=?(Button)?this.findViewById(R.id.bt_save);

this.bt_save.setOnClickListener(new?View.OnClickListener()?{

@Override

public?void?onClick(View?view)?{

et_name?=?(EditText)?MainActivity.this.findViewById(R.id.et_name);

et_address?=?(EditText)?MainActivity.this.findViewById(R.id.et_address);

rg_types?=?(RadioGroup)?MainActivity.this.findViewById(R.id.rg_types);

rb_take_out?=?(RadioButton)?MainActivity.this.findViewById(R.id.rb_take_out);

rb_sit_down?=?(RadioButton)?MainActivity.this.findViewById(R.id.rb_sit_down);

rb_delivery?=?(RadioButton)?MainActivity.this.findViewById(R.id.rb_delivery);

Address?address?=?new?Address();

address.setName(et_name.getText().toString());

address.setAddress(et_address.getText().toString());

switch?(rg_types.getCheckedRadioButtonId())?{

case?R.id.rb_take_out:

address.setType(MainActivity.this.getString(R.string.take_out));

break;

case?R.id.rb_sit_down:

address.setType(MainActivity.this.getString(R.string.sit_down));

break;

case?R.id.rb_delivery:

address.setType(MainActivity.this.getString(R.string.delivery));

break;

}

Toast.makeText(MainActivity.this,?address.toString(),?Toast.LENGTH_SHORT)

.show();

adapter.add(address);

}

});

lv_address?=?(ListView)?findViewById(R.id.lv_address);

Log.d(TAG,?"設置?Fancy?List?Item");

this.adapter?=?new?ArrayAdapter

(MainActivity.this,?R.layout.fancy_list_item,?listAddress);

lv_address.setAdapter(this.adapter);

}

class?AddressAdapter?extends?ArrayAdapter

?{

public?AddressAdapter()?{

super(MainActivity.this,?R.layout.fancy_list_item,?listAddress);

Log.d(TAG,?"構造Fancy?List?Item");

}

@Override

public?int?getCount()?{

return?super.getCount();

}

@Override

public?long?getItemId(int?position)?{

return?super.getItemId(position);

}

@Override

public?View?getView(int?position,?View?convertView,?ViewGroup?parent)?{

//return?super.getView(position,?convertView,?parent);

View?rowView?=?convertView;

AddressHolder?holder?=?null;

if?(rowView?==?null)?{

Log.d(TAG,?"位置"?+?position?+?";開始加載View");

LayoutInflater?layoutInflater?=?getLayoutInflater();

rowView?=?layoutInflater.inflate(R.layout.fancy_list_item,?parent,?false);

Log.d(TAG,?"位置"?+?position?+?";開始加載完成");

holder?=?new?AddressHolder(rowView);

Log.d(TAG,?"位置"?+?position?+?";設置完成");

rowView.setTag(holder);

}?else?{

holder?=?(AddressHolder)?rowView.getTag();

}

holder.populateFrom(listAddress.get(position));

return?(rowView);

}

}

static?class?AddressHolder?{

private?TextView?name?=?null;

private?TextView?address?=?null;

private?ImageView?icon?=?null;

private?View?rowView?=?null;

AddressHolder(View?rowView)?{

this.rowView?=?rowView;

name?=?(TextView)?rowView.findViewById(R.id.et_name);

address?=?(TextView)?rowView.findViewById(R.id.et_address);

icon?=?(ImageView)?rowView.findViewById(R.id.iv_icon);

}

void?populateFrom(Address?r)?{

name.setText(r.getName());

address.setText(r.getAddress());

if?(r.getType().equals("sit_down"))?{

icon.setImageResource(R.drawable.ball_red);

}?else?if?(r.getType().equals("take_out"))?{

icon.setImageResource(R.drawable.ball_yellow);

}?else?{

icon.setImageResource(R.drawable.ball_green);

}

}

}

@Override

public?boolean?onCreateOptionsMenu(Menu?menu)?{

//?Inflate?the?menu;?this?adds?items?to?the?action?bar?if?it?is?present.

getMenuInflater().inflate(R.menu.main,?menu);

return?true;

}

}

這個是我的Item?XML

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

>

android:id="@+id/iv_icon"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_marginRight="4px"

>

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="vertical">

android:id="@+id/tv_name"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:gravity="center_vertical"

android:textStyle="bold"

android:singleLine="true"

android:ellipsize="end"

>

android:id="@+id/tv_address"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center_vertical"

android:textStyle="bold"

android:singleLine="true"

android:ellipsize="end"

>

總結

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