Android视频上传，无需等待响应

Question

我使用AsyncTask功能创建了视频上传活动。我试图向服务器发送请求以上传视频，服务器需要更多时间上传并返回响应。反正有没有等待服务器响应发送响应服务器？我需要向服务器发送请求，无需等待repsonse并转移到其他页面。

请解释如何做。

先谢谢了。

Answer 1

无需等待响应，不要在onPostExecute方法内启动活动（转移到其他页面）。

如果您发布代码，我可以为您提供更多帮助。

修改：

我不知道你是否真的想要这样做，用户如何知道视频已成功上传，你可以通过从（onPostExecute）移动开始活动代码来实现这一点，你可以把它放进去（onPreExecute），或者在调用（uploadVideo）之后，如下所示：

private String videourl;
private TextView statusView;
ProgressDialog uploading;
private String questionid;
private final int SPLASH_DISPLAY_LENGTH = 4500;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload);
if (android.os.Build.VERSION.SDK_INT > 9) {
    StrictMode.ThreadPolicy policy = new       StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);
}



statusView = (TextView)findViewById(R.id.uploadstatus);
Bundle extras = getIntent().getExtras();
if (extras != null) {
    if (extras.containsKey("path")) {
        videourl = extras.getString("path");
        questionid = String.valueOf(extras.getInt("questionID"));
    }


}
uploading = ProgressDialog.show(UploadActivity.this, "Uploading File",     "Please wait...", false, false);
new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {

        uploadVideo();
// add the start activity code here
Intent in = new Intent(getApplicationContext(), ViewQuestions.class);
                //  Intent in = new Intent(getApplicationContext(), DrawingActivity.class);
                in.putExtra("questionID", questionid);

                startActivity(in);

                finish();
    }
}, SPLASH_DISPLAY_LENGTH);
}
private void uploadVideo() {
class UploadVideo extends AsyncTask<Void, Void, String> {


    @Override
    protected void onPreExecute() {
        super.onPreExecute();


    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        uploading.dismiss();


        Log.i("Video Response", s.toString());
        try {
            JSONObject jsonObject = new JSONObject(s);
            if(jsonObject.has("validation")){

                if(jsonObject.getString("validation") == "true" ){
                    Toast.makeText(getApplicationContext(),"Video Created Successfully",Toast.LENGTH_LONG).show();
                }else{
                    Toast.makeText(getApplicationContext(),"Video not created ",Toast.LENGTH_LONG).show();
                }
//remove start activity call from here
              /*  Intent in = new Intent(getApplicationContext(), ViewQuestions.class);
                //  Intent in = new Intent(getApplicationContext(), DrawingActivity.class);
                in.putExtra("questionID", questionid);
                finish();
                startActivity(in);*/
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }


    }

    @Override
    protected String doInBackground(Void... params) {
        Upload u = new Upload();
        String msg = u.uploadVideo(videourl,questionid,UploadActivity.this);
        return msg;
    }
}
UploadVideo uv = new UploadVideo();
uv.execute();
}

但我认为您应该使用Services而不是AsyncTask来确保上传完成，因为AsyncTask可能在活动结束后被杀死，请尝试this服务进行文件上传。

注意：

您应该将问题中的代码添加为答案

Answer 2

公共类UploadActivity扩展了AppCompatActivity {

VMRuntime.getRuntime().setMinimumHeapSize(BIGGER_SIZE);

}

请检查并告知我更改。 谢谢 。