簡體   English   中英

PHP和android之間的通信

[英]communication between PHP and android

我正在開發一個Android應用程序,其中用戶將數據發送到PHP服務器。為此,我正在使用REST Web服務,我正在發送大量的數據,這需要花費近2分鍾的時間來執行,並且我希望用戶將數據發送到PHP服務器時,服務器應該發送成功消息給用戶和服務器在單獨的線程中執行數據。這怎么可能?

您可以使用AsyncTask執行繁重的操作而不會阻塞UI線程。

我相信這段代碼應該足以讓您入門。

private class MyHeavyTask extends AsyncTask<Void, Void, Boolean>{
    // Perform initialization here. 
    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        // Showing progress dialog
        progressDialog = new ProgressDialog(MyActivity.this);
        progressDialog.setMessage("Loading...");
        progressDialog.setCancelable(false);
        progressDialog.show();
    }

    // If an error is occured executing doInBackground()
    @Override
    protected void onCancelled() {
        if (progressDialog.isShowing())
            progressDialog.dismiss();
        // Show an alert box.
        AlertDialog.Builder builder = new AlertDialog.Builder(MyActivity.this);

        builder.setCancelable(false)
               .setTitle("Error!")
               .setMessage("Error in executing your command.")
               .setInverseBackgroundForced(true)
               .setPositiveButton("Dismiss", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();
    }

    @Override
    protected Boolean doInBackground(Void... arg0) {
        if(!isCancelled()) {
            // Perform heavy lifting here.
        }
        return true;
    }

    // After the request's performed. Here, hide the dialog boxes, inflate lists, etc.
    @Override
    protected void onPostExecute(Boolean result) {
        super.onPostExecute(result);
        // Dismiss the progress dialog
        if (progressDialog.isShowing())
            progressDialog.dismiss();
    }

}

您只需通過以下代碼行調用AsyncTask:

new MyHeavyTask().execute();

希望對您的問題有所幫助。

暫無
暫無

聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.

 
粵ICP備18138465號  © 2020-2024 STACKOOM.COM