在ListViewDragginganimation自定义列表视图项 [英] Custom listview item in ListViewDragginganimation

问题描述

所以，我有一个Android项目中，我有一个排序功能很好用。我一直在使用的DevBytes ListViewDraggingAnimation 的 https://www.youtube.com/watch?v=_BZIvjMgH-Q

So I have an android project where I have good use for a sorting functionality. I've been using DevBytes ListViewDraggingAnimation https://www.youtube.com/watch?v=_BZIvjMgH-Q

我得到它在我的应用程序和布局工作，但一个大问题仍然存在，我不能让它与我自定义的的ListView 的项目工作。该股项的DevBytes code是一个普通的的TextView 这样：

I have gotten it to work in my app and layout, but one big issue still remains, I cannot get it to work with my custom ListView items. The stock item in DevBytes code is a plain TextView as such:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#FFF"
    android:textSize="@dimen/list_text_size"
    android:gravity="center_vertical"
    android:paddingLeft="15dp"
    android:paddingRight="15dp"
    android:minHeight="@dimen/list_item_height"
    android:textColor="#000000"
/>

我的自定义的ListView 项目包括一个 RelativeLayout的有四个的TextView 里面装的。因此：

My custom ListView items consist of a RelativeLayout with four TextViews inside. As such:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="adress"
        android:id="@+id/item_adressView"
        android:layout_alignParentTop="true"
        android:layout_toEndOf="@+id/item_driveTypeView"
        android:textSize="15dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="postnr, ort"
        android:id="@+id/item_zipcodePlaceView"
        android:textSize="15dp"
        android:layout_below="@+id/item_adressView"
        android:layout_toEndOf="@+id/item_driveTypeView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="företag"
        android:id="@+id/item_companyView"
        android:textSize="15dp"
        android:layout_below="@+id/item_zipcodePlaceView"
        android:layout_toEndOf="@+id/item_driveTypeView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="P1"
        android:id="@+id/item_driveTypeView"
        android:textSize="40dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

诚然，我不理解数据结构良好。我在改变它接受我的项目我们尽最大努力崩溃的程序。我担心我已经改变了code比需要一些尝试的更多部分。可能有人帮我指出了code我有以获得的ListView 来接受我的自定义项目变更的哪些部分？

Admittedly, I don't understand the data structure well. Every attempt I've made at changing it to accept my items has crashed the program. I fear I have changed more parts of the code than needed in some attempts. Could someone help me point out what parts of the code I have to change in order to get the ListView to accept my custom items?

发布所有的Java code将使我的职务超出字符数限制。

Posting all java code will make my post exceed the character limit.

在code可以在这里找到：
的http://developer.android.com/shareables/devbytes/ListViewDraggingAnimation.zip

The code can be found here: http://developer.android.com/shareables/devbytes/ListViewDraggingAnimation.zip

推荐答案

您需要更改适配器，如果你想将数据绑定到多个视图（除了只是一个简单的TextView）。阅读 ArrayAdapter参考以了解这些适配器的作品。

You need to change the adapter if you want to bind data to multiple views (besides just a simple TextView). Read the ArrayAdapter reference to understand how these adapter works.

基本上，你的构造需要拿在复杂的数据结构，那么你需要重写getView（）将数据绑定到多个视图。使用的DevBytes例如，尝试这样的：

Basically, your constructor needs to take in your complex data structure, then you need to override getView() to bind data to multiple views. Using the DevBytes example, try something like this:

// Update the adapter to use string arrays instead of just strings
public class StableArrayAdapter extends ArrayAdapter<String[]> {

    final int INVALID_ID = -1;
    HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();

    // Save these references to the layout and string data
    int mRowLayout;
    List<String[]> mStrings;

    // Constructor should accept string arrays
    public StableArrayAdapter(Context context, int rowLayout, List<String[]> objects) {

        super(context, rowLayout, objects);

        // Change this so your string array list can be indexed
        for (int i = 0; i < objects.size(); ++i) {

            // Make sure you are using a unique string for each list row
            // String[0] is just an example
            String[] stringArray = objects.get(i);
            String uniqueString = stringArray[0]; 

            mIdMap.put(uniqueString, i);
        }

        mRowLayout = rowLayout;
        mStrings = objects;
    }

    ...

    // Populate your layout text views with data from your string array
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        convertView = LayoutInflater.from(getContext()).inflate(mRowLayout, null);

        TextView tvAddress = (TextView)convertView.findViewById(R.id.item_adressView);
        TextView tvZipCode = (TextView)convertView.findViewById(R.id.item_zipcodePlaceView);
        TextView tvCompany = (TextView)convertView.findViewById(R.id.item_companyView);
        TextView tvDriveType = (TextView)convertView.findViewById(R.id.item_driveTypeView);

        tvAddress.setText(mStrings.get(position)[0]);
        tvZipCode.setText(mStrings.get(position)[1]);
        tvCompany.setText(mStrings.get(position)[2]);
        tvDriveType.setText(mStrings.get(position)[3]);

        return convertView;
    }
}

在您的活动，只需加载适配器布局的xml文件和字符串数组，像这样的：

In your activity, just load the adapter with your layout xml file and string arrays, like this:

StableArrayAdapter adapter = new StableArrayAdapter(this, R.layout.list_row, mStringsList);

我没有测试code，但它应该工作。我用类似的东西最近。此外，还可以在网上找如何自定义适配器上几个教程。这里有一个很好的来看看：使用与ArrayAdapter ListView控件

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