如何在Android中的SQLite数据库中存储和检索字节数组(图像数据)?
答案 0 :(得分:12)
字节数组可以存储为BLOB数据类型。除了特别注意分块之外,这个过程并没有什么特别之处,例如:
InputStream is = context.getResources().open(R.drawable.MyImageFile);
try {
byte[] buffer = new byte[CHUNK_SIZE];
int size = CHUNK_SIZE;
while(size == CHUNK_SIZE) {
size = is.read(buffer); //read chunks from file
if (size == -1) break;
ContentValues cv = new ContentValues();
cv.put(CHUNK, buffer); //CHUNK blob type field of your table
long rawId = database.insert(TABLE, null, cv); //TABLE table name
}
} catch (Exception e) {
Log.e(TAG, "Error saving raw image to: "+rawId, e);
}