Question

我有一个应用程序，我需要从我的数据库接收图像（在有人询问之前，是的，它需要来自数据库）。
在我的PHP文件中，我发送完整的完整字符串，但在Android中我只收到一半的字符串左右你们有没有提示为什么会发生这种情况？任何人都可以帮助我吗？

代码

ServerRequest.java：

public void FetchServicoFotoDataInBackground(int CodServico, GetServicoFotoCallBack userCallback) {
    new FetchServicoFotoDataAsyncTasck(CodServico, userCallback).execute();
}


public class FetchServicoFotoDataAsyncTasck extends AsyncTask<Void, Void, ArrayList<String>> {
    ArrayList<String> ltservico;
    int CodServico;
    GetServicoFotoCallBack servCallback;

    public FetchServicoFotoDataAsyncTasck(int CodServico, GetServicoFotoCallBack servicoCallback) {
        this.CodServico = CodServico;
        this.servCallback = servicoCallback;
}

    @Override
    protected ArrayList<String> doInBackground(Void... params) {
        ArrayList<String> returnedServico = null;
        try {

            URL url = new URL(SERVER_ADDRESS + "myphpfile.php");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            Uri.Builder builder = new Uri.Builder()
                    .appendQueryParameter("CodServico", this.CodServico+"");
            final String postParameters = builder.build().getEncodedQuery();
            conn.setConnectTimeout(3000);
            conn.setReadTimeout(3000);
            conn.setRequestMethod("POST");
            conn.setFixedLengthStreamingMode(postParameters.getBytes().length);
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setDoInput(true);
            conn.setDoOutput(true);

            //send the POST out
            PrintWriter pw = new PrintWriter(conn.getOutputStream());
            pw.print(postParameters);
            pw.close();
            conn.connect();
            String result = convertStreamToString(conn.getInputStream());
            JSONArray jArray = new JSONArray(result);
            JSONObject json_data = null;
            returnedServico = new ArrayList<>();
            for (int i = 0; i < jArray.length(); i++) {
                json_data = jArray.getJSONObject(i);
                String imagem = json_data.getString("FotoServico");
                returnedServico.add(imagem);
            }
        } catch (Exception e) {

            e.printStackTrace();
            Log.e("Exception", "Erro[" + e.getMessage() + "] ");
        }
        return returnedServico;
    }

    @Override
    protected void onPostExecute(ArrayList<String> returnedServico) {
        servCallback.done(returnedServico);
        super.onPostExecute(ltservico);
    }
}

private static String convertStreamToString(InputStream is) {

    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb = new StringBuilder();

    String line = null;
    try {
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return sb.toString();
}

MyActivity.java：

public class verfotoserv extends BaseNavegationActivity {

private LinearLayout lnrVerImages;
private ImageView imageView;
int codservico=0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.verfotoserv);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    lnrVerImages = (LinearLayout) findViewById(R.id.lnrImages);

    final Bundle extras = getIntent().getExtras();
    if (extras != null) {
        codservico = extras.getInt("CodServico");
    }

    ServerRequests serverRequests = new ServerRequests(this);
    serverRequests.FetchServicoFotoDataInBackground(codservico, new GetServicoFotoCallBack() {
        @Override
        public void done(ArrayList<String> returnImagens) {
            try {
                if (returnImagens == null) {
                    throw new Exception("Não existem dados ou ocorreu um erro no servidor\nTente novamente mais tarde.");
                }
                for (String imagem : returnImagens) {
                    Log.i("ImagemRecebida",imagem);
                    byte[] imageAsBytes = Base64.decode(imagem.getBytes(), Base64.DEFAULT);
                    imageView = new ImageView(verfotoserv.this);
                    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                            ViewGroup.LayoutParams.WRAP_CONTENT);
                    params.setMargins(5, 5, 5, 5);
                    imageView.setLayoutParams(params);

                    imageView.setImageBitmap(BitmapFactory.decodeByteArray(imageAsBytes,0,imageAsBytes.length));
                    imageView.setAdjustViewBounds(true);
                    lnrVerImages.addView(imageView);
                }
            }
            catch (Exception erro){
                erro.printStackTrace();
                showError(erro);
            }
        }
    });

}

private void showError(Exception erro){
    Log.e("Erro", erro.getMessage());
    AlertDialog.Builder dialogBuilder=new android.app.AlertDialog.Builder(verfotoserv.this);
    dialogBuilder.setMessage("Erro:"+erro.getMessage());
    dialogBuilder.setPositiveButton("Ok", null);
    dialogBuilder.show();
}
}

MyActivity.xml：

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

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scroll1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <LinearLayout
        android:id="@+id/lnrVerImages"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

    </LinearLayout>
</ScrollView>
</LinearLayout>

Myphpfile：

<?php
include_once "ligarbd.php";

$codservico = $_POST['CodServico'];

$SQL = "select * from table where CodServico=".$codservico;
$result = mysql_query($SQL);

$imagens = array();
$i = 0;
while ( $postData = mysql_fetch_assoc($result) ) {
    $imagens[$i][FotoServico]=base64_encode($postData['FotoServico']);
    $i = $i + 1;
}

echo json_encode($imagens);
?>

Answer 1

我错了它收到改变这个所需的一切

lnrVerImages = (LinearLayout) findViewById(R.id.lnrImages);

到此

lnrVerImages = (LinearLayout) findViewById(R.id.lnrVerImages);

没有收到从PHP

1 个答案: