decade_zuo 发表于 2013-1-30 01:08:15

sqllite 存储图片

方法一:


Java代码
public void saveIcon(Bitmap icon) {   
      if (icon == null) {   
            return;   
      }   
   
      // 最终图标要保存到浏览器的内部数据库中,系统程序均保存为SQLite格式,Browser也不例外,因为图片是二进制的所以使用字节数组存储数据库的   
      // BLOB类型   
      final ByteArrayOutputStream os = new ByteArrayOutputStream();   
      // 将Bitmap压缩成PNG编码,质量为100%存储            
      icon.compress(Bitmap.CompressFormat.PNG, 100, os);      
      // 构造SQLite的Content对象,这里也可以使用raw   
      ContentValues values = new ContentValues();      
      // 写入数据库的Browser.BookmarkColumns.TOUCH_ICON字段   
      values.put(Browser.BookmarkColumns.TOUCH_ICON, os.toByteArray());      
            
      DBUtil.update(....);//调用更新或者插入到数据库的方法   
    }   

   方法二:如果数据表入口时一个content:URIimport android.provider.MediaStore.Images.Media;

Java代码
import android.content.ContentValues;   
import java.io.OutputStream;   
   
// Save the name and description of an image in a ContentValues map.      
ContentValues values = new ContentValues(3);   
values.put(Media.DISPLAY_NAME, "road_trip_1");   
values.put(Media.DESCRIPTION, "Day 1, trip to Los Angeles");   
values.put(Media.MIME_TYPE, "image/jpeg");   
   
// Add a new record without the bitmap, but with the values just set.   
// insert() returns the URI of the new record.   
Uri uri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);   
   
// Now get a handle to the file for that record, and save the data into it.   
// Here, sourceBitmap is a Bitmap object representing the file to save to the database.   
try {   
    OutputStream outStream = getContentResolver().openOutputStream(uri);   
    sourceBitmap.compress(Bitmap.CompressFormat.JPEG, 50, outStream);   
    outStream.close();   
} catch (Exception e) {   
    Log.e(TAG, "exception while writing image", e);   
}   

import android.content.ContentValues;
import java.io.OutputStream;

// Save the name and description of an image in a ContentValues map.   
ContentValues values = new ContentValues(3);
values.put(Media.DISPLAY_NAME, "road_trip_1");
values.put(Media.DESCRIPTION, "Day 1, trip to Los Angeles");
values.put(Media.MIME_TYPE, "image/jpeg");

// Add a new record without the bitmap, but with the values just set.
// insert() returns the URI of the new record.
Uri uri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);

// Now get a handle to the file for that record, and save the data into it.
// Here, sourceBitmap is a Bitmap object representing the file to save to the database.
try {
    OutputStream outStream = getContentResolver().openOutputStream(uri);
    sourceBitmap.compress(Bitmap.CompressFormat.JPEG, 50, outStream);
    outStream.close();
} catch (Exception e) {
    Log.e(TAG, "exception while writing image", e);
}   
转载:http://sanfeng-chow.iteye.com/blog/599350
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