在Android的应用列表视图 [英] Using listview in android

问题描述

我提出，需要使用的ListView Android应用程序。我想添加一个菜单按钮，上面写着添加到列表，一旦该菜单按钮，用户presses，它会弹出包含popupwindow一个的TextView ，的EditText 和两个按钮，确定和取消。一旦用户presses确定后，的EditText 应加入的ListView 中的文本。而取消按钮是显而易见的。我也希望能够在一个的ListView 项长preSS打开包含删除按钮popupwindow 。我想设计使用XML屏的ListView。我怎样才能让这一切成为可能？请帮助我，感谢这么多提前！我用这code迄今：

ListView的活动：

 公共类NotesActivity扩展ListActivity {
/ **当第一次创建活动调用。 * /
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;
}
 

主屏XML：

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
机器人：layout_width =FILL_PARENT
机器人：layout_height =FILL_PARENT
机器人：背景=@绘制/背景
机器人：方向=垂直＆GT;
＆LT; ListView控件
    机器人：ID =@ + ID /列表
    机器人：layout_width =FILL_PARENT
    机器人：layout_height =WRAP_CONTENT＆GT;＆LT; /＆的ListView GT;＆LT; / LinearLayout中＆GT;
 




解决方案

1. 您必须创建一个包含ListView控件的布局。




2. 您必须创建lyout对应的列表视图中一行的XML。




3. 您必须创建一个适配器，将数据填入你的ListView插入




4. 您必须对您的按钮，在列表中添加数据创建一个onClickListener




5. 如果您使用的是ArrayAdapter或CursorAdapter的，添加新
   项目创建到你的适配器使用的列表或光标
   （ notifyDataSetChanged（）被自动调用），所以你的适配器将更新
   列表视图

来源：
http://developer.android.com/resources/tutorials/views/hello -listview.html

在Android应用 动态的ListView：它

previous话题p>

I am making an android application that needs to use a ListView. I want to add a menubutton that says "Add to list" and once the user presses that menubutton, it pops up a popupwindow containing a TextView, EditText and two Buttons, "Ok" and "Cancel". Once the user presses "Ok", the text inside the EditText should be added to the ListView. And the cancel Button is obvious. I also want to be able to long press on a ListView item to open a popupwindow containing a delete Button. I want to design the ListView screen using XML. How can i make this possible??? Please help me and thanks SO much in advance! I am using this code so far:

ListView activity:

public class NotesActivity extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}

Main screen 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:background="@drawable/background"
android:orientation="vertical" >








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

</ListView>

</LinearLayout>

解决方案

1. You have to create a layout containing a listView.

2. You have to create an xml lyout corresponding to one row of your list view.

3. You have to create an adapter which will populate data to insert in your listView

4. You have to create an onClickListener on your button to add data in your list

5. If you are using an ArrayAdapter or a CursorAdapter, add the new item you created to the list or the cursor used by your adapter and (notifyDataSetChanged() is automatically called), so your adapter will update the listview

Source : http://developer.android.com/resources/tutorials/views/hello-listview.html

Previous topic on it : Dynamic ListView in Android app

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