将联系人的图片加载到列表视图中,而不是默认?

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【中文标题】将联系人的图片加载到列表视图中,而不是默认?【英文标题】:Load a contact's picture into a listview instead of the default? 【发布时间】:2012-01-10 09:40:02 【问题描述】:

我创建了一个包含我的联系人的列表视图...

tab_contact_list.xml,包含列表视图:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_
    android:layout_
    android:orientation="vertical" >

    <ListView
        android:id="@+id/tab_contact_list"
        android:layout_
        android:layout_
        android:layout_weight="1" />

</LinearLayout>

listview_detail_tab_contact_list.xml,listview的详细信息行:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_
    android:layout_
    android:orientation="horizontal" >


    <ImageView
        android:id="@+id/imageView1"
        android:layout_
        android:layout_
        android:layout_margin="5dp"
        android:src="@drawable/defaultavatar" />

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_
    android:layout_
    android:orientation="vertical" >


        <TextView
            android:id="@+id/contact_name"
            android:layout_
            android:layout_
            android:layout_marginLeft="10dp"
            android:layout_marginTop="5dp"
            android:text="Who am I"
            android:textAppearance="?android:attr/textAppearanceLarge" />


        <TextView
            android:id="@+id/contact_number"
            android:layout_
            android:layout_
            android:layout_marginLeft="20dp"
            android:text="000000000" />

    </LinearLayout> 

</LinearLayout>

defaultavatar.png 位于文件夹 drawable

而且,我有一些课程:

public class ContactStock 

    private String name;
    private String number;

    public ContactStock(String name, String number) 
        this.name = name;
        this.number = number;
    

    public void setName(String name) 
        this.name = name;
    

    public void setNumber(String number) 
        this.number = number;
    

    public String getName() 
        return this.name;
    

    public String getNumber() 
        return this.number;
    


public class ContactListAdapter extends ArrayAdapter 
    private final Activity activity;
    private final List stocks;

    public ContactListAdapter(Activity activity, List objects) 
        super(activity, R.layout.listview_detail_tab_contact_list, objects);
        this.activity = activity;
        this.stocks = objects;
    

    @Override
    public View getView(int position, View convertView, ViewGroup parent) 

        View rowView = convertView;
        ContactStockView sv = null;
        if (rowView == null) 
            // Get a new instance of the row layout view
            LayoutInflater inflater = activity.getLayoutInflater();
            rowView = inflater.inflate(
                    R.layout.listview_detail_tab_contact_list, null);

            // Hold the view objects in an object,
            // so they don't need to be re-fetched
            sv = new ContactStockView();
            sv.name = (TextView) rowView.findViewById(R.id.contact_name);

            sv.number = (TextView) rowView.findViewById(R.id.contact_number);

            // Cache the view objects in the tag,
            // so they can be re-accessed later
            rowView.setTag(sv);
         else 
            sv = (ContactStockView) rowView.getTag();
        
        // Transfer the stock data from the data object
        // to the view objects
        ContactStock currentStock = (ContactStock) stocks.get(position);
        sv.name.setText(currentStock.getName());
        sv.number.setText(currentStock.getNumber());

        // TODO Auto-generated method stub
        return rowView;
    

    protected static class ContactStockView 
        protected TextView name;
        protected TextView number;
    

我有类显示列表视图:

public class addlistfromcontact extends Activity 
    private ListView lst;
    private List<ContactStock> contactstock;
    private Cursor mCursor;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tab_contact_list);
        lst = (ListView) findViewById(R.id.tab_contact_list);
        contactstock = new ArrayList<ContactStock>();

        mCursor = managedQuery(ContactsContract.Data.CONTENT_URI, null, Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'", null,
                ContactsContract.Data.DISPLAY_NAME + " ASC");
        int number = mCursor.getColumnIndex(Phone.NUMBER);      
        int name = mCursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME);
        while (mCursor.moveToNext()) 
            String phName = mCursor.getString(name);
            String phNumber = mCursor.getString(number);
            contactstock.add(new ContactStock(phName, phNumber));
        
        lst.setAdapter(new ContactListAdapter(addlistfromcontact.this,
                contactstock));
    


我的结果是这样的:

现在如何显示每个联系人的图片而不是 defaultavatar.png?

【问题讨论】:

请回答您的问题 Thuong 我也遇到了同样的问题 【参考方案1】:

我相信你有一个错误。

long phId=mCursor.getLong(id);

应该是while循环的一部分。

【讨论】:

【参考方案2】:

尝试使用您的模型来握住图片..

public class ContactStock 

    private Bitmap picture;

    // your current code goes here       

    public void setPicture(Bitmap picture) 
        this.picture = picture;
    

    public Bitmap getPicture() 
        return picture;
    

确保您在 ArrayAdapter 中实现 getPicture() 方法,您只在那里使用您的姓名和数字对象,在您的行的 xml 中,您已经有 imageview,只需将其添加到 ArrayAdapter ...那么如何你有位图吗??这对我有用...

public Bitmap loadContactPhoto(ContentResolver cr, long id)  
    Uri uri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id); 
    InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(cr, uri); 
    if (input == null)  
return null; 
     
    return BitmapFactory.decodeStream(input); 

*** 成员“wrongmissle”在此处发布了此内容。 How do I load a contact Photo? 谢谢错误的导弹。 由于您已经可以获取联系人的姓名和号码,只需拉出 id,使用 ContentResolver 将其插入该方法,该方法会返回一个可以放在您的列表中的位图!希望对您有所帮助。

【讨论】:

【参考方案3】:

上面的答案可能会给你错误...这是一个 100% 工作的代码

Uri uri = Uri.parse(url);
                             Bitmap bitmap = null;
                            try 
                                bitmap = MediaStore.Images.Media.getBitmap(contexts.getContentResolver(), uri);
                             catch (FileNotFoundException e) 
                                // TODO Auto-generated catch block
                                bitmap = null;
                                e.printStackTrace();
                             catch (IOException e) 
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                                bitmap = null;
                            


                            if(bitmap != null)
                                friend.setImageURI(uri);
                            else
                                friend.setImageResource(R.drawable.avatar_photo); 

ImageView 是朋友。

【讨论】:

【参考方案4】:

首先你需要给ContactStock类添加一个位图, 这将保存联系人照片。 将适配器类的结尾改成如下代码:

        ContactStock currentStock = (ContactStock) stocks.get(position);
        sv.name.setText(currentStock.getName());
        sv.number.setText(currentStock.getNumber());
        sv.image.setImageBitmap(currentStock.getPicture());


        // TODO Auto-generated method stub
        return rowView;
    

    protected static class ContactStockView 
        protected TextView name;
        protected TextView number;
        protected ImageView image;
    

向主活动(AddlistFromContact)添加以下函数:

public Bitmap getPhoto(long userId ) 
        Uri photoUri = null;
        ContentResolver cr = this.getContentResolver();
        photoUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, userId);
        Bitmap defaultPhoto = BitmapFactory.decodeResource(getResources(), R.drawable.contacts);
        if (photoUri != null) 
            InputStream input = ContactsContract.Contacts.openContactPhotoInputStream(
                    cr, photoUri);
            if (input != null) 
                return BitmapFactory.decodeStream(input);
            
         else 

            return defaultPhoto;
        

        return defaultPhoto;
    

现在你需要做的就是在你的onCreate()函数中添加这两行,当然在你定义了光标之后:



    int id=mCursor.getColumnIndex(Phone.CONTACT_ID);
    long phId=mCursor.getLong(id);

并通过以下方式调用contactStock的构造器:

contactstock.add(new ContactStock(phName, phNumber,getPhoto(phId)));

希望我有所帮助

【讨论】:

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