我想知道哪種是將圖像上傳到服務器而不降低其質量的最佳方法。我在Google上搜索時發現了各種發布數據的方法。但是我不確定哪一個最好上傳。我碰到多部分圖像上傳。使用字節數組上傳圖像使用base64編碼的字符串上傳圖像。我嘗試過Base64編碼，如果圖像的分辨率太高，它將導致OOM（內存不足）。任何解決這個問題的教程將不勝感激。提前致謝。
3 回答
墨色風雨
TA貢獻1853條經驗 獲得超6個贊
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);
上面的代碼從圖庫中選擇圖像
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1)
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage = data.getData();
String filePath = getPath(selectedImage);
String file_extn = filePath.substring(filePath.lastIndexOf(".") + 1);
image_name_tv.setText(filePath);
try {
if (file_extn.equals("img") || file_extn.equals("jpg") || file_extn.equals("jpeg") || file_extn.equals("gif") || file_extn.equals("png")) {
//FINE
} else {
//NOT IN REQUIRED FORMAT
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public String getPath(Uri uri) {
String[] projection = {MediaColumns.DATA};
Cursor cursor = managedQuery(uri, projection, null, null, null);
column_index = cursor
.getColumnIndexOrThrow(MediaColumns.DATA);
cursor.moveToFirst();
imagePath = cursor.getString(column_index);
return cursor.getString(column_index);
}
現在使用多方表格數據過帳數據
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("LINK TO SERVER");
多部分表格數據
MultipartEntity mpEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
if (filePath != null) {
File file = new File(filePath);
Log.d("EDIT USER PROFILE", "UPLOAD: file length = " + file.length());
Log.d("EDIT USER PROFILE", "UPLOAD: file exist = " + file.exists());
mpEntity.addPart("avatar", new FileBody(file, "application/octet"));
}
最后將數據發布到服務器
httppost.setEntity(mpEntity);
HttpResponse response = httpclient.execute(httppost);
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