那么我的代码是一团糟。检查这里的教程是[非常简单]
好的乍得检查这里的代码:
主要活动 :
package org.example.chad;
import java.util.ArrayList;
import android.app.ListActivity;
import android.os.Bundle;
public class MainActivity extends ListActivity {
private ArrayList<DataItem> data = new ArrayList<DataItem>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//create Objects
DataItem obj1 = new DataItem("name1", "record1");
DataItem obj2 = new DataItem("name2", "record2");
DataItem obj3 = new DataItem("name3", "record3");
DataItem obj4 = new DataItem("name4", "record4");
DataItem obj5 = new DataItem("name5", "record5");
//add the to ArrayList
data.add(obj1);
data.add(obj2);
data.add(obj3);
data.add(obj4);
data.add(obj5);
CustomAdapter adapter = new CustomAdapter(this, R.layout.row, data);
setListAdapter(adapter);
}
}
主.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>
数据项:
package org.example.chad;
public class DataItem {
private String name;
private String record;
public DataItem(){
}
public DataItem(String n, String r ){
this.name = n;
this.record = r;
}
public String getname() {
return name;
}
public void setname(String name) {
this.name = name;
}
public String getrecord() {
return record;
}
public void setrecord(String record) {
this.record = record;
}
}
自定义适配器:
package org.example.chad;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class CustomAdapter extends ArrayAdapter<DataItem> {
private ArrayList<DataItem> objects;
public CustomAdapter(Context context, int textViewResourceId, ArrayList<DataItem> objects) {
super(context, textViewResourceId, objects);
this.objects = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.row, null);
}
DataItem i = objects.get(position);
if (i != null) {
TextView nameView = (TextView) v.findViewById(R.id.name);
TextView recordView = (TextView) v.findViewById(R.id.record);
if (nameView != null){
nameView.setText(i.getname());
}
if (recordView != null){
recordView.setText(i.getrecord());
}
}
return v;
}
}
和row.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="@+id/name"
android:layout_width="100sp"
android:layout_height="20sp"
android:textSize="16sp"
android:layout_gravity="left|center_vertical"
android:layout_marginLeft="10sp"/>
<TextView
android:id="@+id/record"
android:layout_width="100sp"
android:layout_height="wrap_content"
android:layout_marginLeft="10sp"
android:layout_gravity="right"
android:textSize="16sp" />
</LinearLayout>
几个小时后,我将添加一些评论。结果在这里