picasso-2.5.2.jar°ü(°²×¿Í¼Æ¬¼ÓÔØ¿ò¼Ü) ¹Ù·½Ãâ·Ñ°æ

picassoÊÇSquare¹«Ë¾¿ªÔ´µÄÒ»¸ö°²×¿Í¼Æ¬¼ÓÔØ¿ò¼Ü£¬¿ÉÒÔʵÏÖͼƬÏÂÔغͻº´æ¹¦ÄÜ¡£picasso½â¾öÁËadapter¼ÓÔز»ÔÚÊÓÒ°·¶Î§µÄImageViewͼƬ×ÊÔ´µ¼ÖÂͼƬ´íλµÄ´íÎó£¬Í¬Ê±ËüʹÓÃÁ˸´ÔÓµÄͼƬѹËõת»»À´¾¡¿ÉÄܵļõÉÙÄÚ´æÏûºÄ£¬²¢×Ô´øÄÚ´æºÍÓ²Å̶þ¼¶»º´æ¹¦ÄÜ£¬Èç¹ûÄú¿ª·¢°²×¿Ó¦ÓÃÐèÒªÓõ½Í¼Æ¬¼ÓÔØ¿âµÄ»°£¬picasso¾ÍÊDz»´íµÄÑ¡Ôñ¡£

¹¦ÄÜÌص㣺

1.ImageViewÔÚÊÊÅäÆ÷Öд¦Àí»ØÊÕºÍÏÂÔØÈ¡Ïû¡£

2.¸´ÔÓµÄͼÏñת»»Óë×îСµÄÄÚ´æʹÓá£

3.×Ô¶¯ÄÚ´æºÍ´ÅÅÌ»º´æ¡£

ʹÓ÷½·¨£º

ÊÊÅäÆ÷ÏÂÔØ

×Ô¶¯¼ì²âÊÊÅäÆ÷ÖØÐÂʹÓ㬲¢È¡ÏûÒÔÇ°µÄÏÂÔØ¡£

@Override public void getView£¨int position£¬View convertView£¬ViewGroup parent£©{

SquaredImageView view =£¨SquaredImageView£©convertView;

if£¨view == null£©{

view = new SquaredImageView£¨context£©;

}

String url = getItem£¨position£©;

Picasso.with£¨context£©.load£¨url£©.into£¨view£©;

}

ͼÏñת»»

ת»»Í¼ÏñÒÔ¸üºÃµØÊÊÓ¦²¼¾Ö²¢¼õÉÙÄÚ´æ´óС¡£

Picasso.with(context)

.load£¨url£©

.resize£¨50£¬50£©

.centerCrop£¨£©

.into£¨imageView£©

Äú»¹¿ÉÒÔΪ¸ü¸ß¼¶µÄЧ¹ûÖ¸¶¨×Ô¶¨Òåת»»¡£

public class CropSquareTransformation implements Transformation {

@Override public Bitmap transform£¨Bitmap source£©{

int size = Math.min£¨source.getWidth£¨£©£¬source.getHeight£¨£©£©;

int x =£¨source.getWidth£¨£© - size£©/ 2;

int y =£¨source.getHeight£¨£© - size£©/ 2;

Bitmap result = Bitmap.createBitmap£¨source£¬x£¬y£¬size£¬size£©;

if£¨result£¡= source£©{

source.recycle£¨£©;

}

return result;

}

@Override public String key£¨£©{return“square£¨£©”; }

}

½«´ËÀàµÄʵÀý´«µÝ¸ø¸Ãtransform·½·¨¡£

Place Holders

Picasso.with(context)

.load£¨url£©

.placeholder£¨R.drawable.user_placeholder£©

.error£¨R.drawable.user_placeholder_error£©

.into£¨imageView£©;

ÔÚÏÔʾ´íÎóռλ·û֮ǰ£¬½«ÖØÊÔÈý´ÎÇëÇó¡£

×ÊÔ´¼ÓÔØ

×ÊÔ´£¬×ʲú£¬Îļþ£¬ÄÚÈÝÌṩ³ÌÐò¶¼×÷ΪͼÏñÀ´Ô´±»Ö§³Ö¡£

Picasso.with£¨context£©.load£¨R.drawable.landing_screen£©.into£¨imageView1£©;

Picasso.with£¨context£©.load£¨“file£º///android_asset/DvpvklR.png”£©.into£¨imageView2£©;

Picasso.with£¨context£©.load£¨new File£¨...£©£©¡£into£¨imageView3£©;

Debug Indicators

¶ÔÓÚ¿ª·¢£¬Äú¿ÉÒÔÆôÓÃָʾͼÏñÔ´µÄ²Ê**´øµÄÏÔʾ¡£µ÷ÓÃsetIndicatorsEnabled(true)±Ï¼ÓË÷ʵÀý¡£