android使用列表视图

主程序文件
[java]
package com.example.melistview;

import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends ListActivity {
String[] presidents;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ListView listView = getListView();
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listView.setTextFilterEnabled(true);

presidents = getResources().getStringArray(R.array.presidents_array);
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_checked,presidents));
}

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
Toast.makeText(this, "You Have Select " + presidents[position], Toast.LENGTH_LONG).show();
}

@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;
}

public void onClick(View view){
ListView listView = getListView();

String itemSelected = "item selected \n";
for(int i = 0; i < listView.getCount(); i++){
if(listView.isItemChecked(i)){
itemSelected += listView.getItemAtPosition(i) + "\n";
}
}
Toast.makeText(this, itemSelected, Toast.LENGTH_LONG).show();
}

}
[/java]
布局文件
[xml]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button android:id="@+id/btn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Show selected items"
android:onClick="onClick"/>

<ListView
android:id="@+id/android:list"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</LinearLayout>
[/xml]
效果图

Avatar photo

About Blackford

这是个最好的时代,这是个最坏的时代,这是个充满希望的春天,这是个令人绝望的冬天,我们前面什么都有,我们前面什么都没有。梦想,让我们一次次的走远,又一次次的回头,一个关于人生的梦想还在不断奔跑,带着喜悦和疼痛,不过一切才刚刚开始,并且直到今天也远远没有结束
This entry was posted in Android开发 and tagged . Bookmark the permalink.

发表评论

电子邮件地址不会被公开。 必填项已用*标注