Android的完成（）活动不工作

问题描述

我在codeS得到这个错误，当我使用完成（）; 的方法完成（）是未定义的类型SaveImageTask。我错过了一些声明或任何东西。有人可以请指导我在此。

 公共类SaveImageTask扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {            私人上下文的背景下;
            私人ProgressDialog pDialog;            布尔bCancelled = FALSE;
            公共SaveImageTask（上下文的背景下）{
                this.context =背景;
            }            @覆盖
            在preExecute保护无效（）{
                // TODO自动生成方法存根                super.on preExecute（）;                pDialog =新ProgressDialog（背景）;
                pDialog.setIndeterminate（假）;
                pDialog.setCancelable（真）;
                pDialog.setOnCancelListener（cancelListener）;
                pDialog.show（）;            }            @覆盖
            保护字符串doInBackground（字符串参数... args）{
                // TODO自动生成方法存根                // 我的东西
                返回null;
            }            @覆盖
            保护无效onPostExecute（字符串参数）{
                // TODO自动生成方法存根                pDialog.dismiss（）;            }            OnCancelListener cancelListener =新OnCancelListener（）{
                @覆盖
                公共无效onCancel（DialogInterface为arg0）{
                    bCancelled = TRUE;
                    SaveImageTask.this.finish（）; //＆LT;＆LT; ----的方法完成（）是未定义的类型SaveImageTask
                }
            };
        }
 

解决方案

只要使用，

 （活动（上下文））完成（）。
 

编辑：

其实你要投你的上下文活动上下文，

那么你可以使用完成（）活动的方法，

喜欢的东西，

 私人活动范围内;公共SaveImageTask（上下文的背景下）{
                this.context =（活动）范围内;
            }
 

现在，只需

  context.finish（）;
 

I got this error in my codes when i use finish(); "The method finish() is undefined for the type SaveImageTask" . Am I missing some declarations or anything. Can someone please guide me on this.

    public class SaveImageTask extends AsyncTask<String , String , String> {

            private Context context;
            private ProgressDialog pDialog;

            boolean bCancelled=false;
            public SaveImageTask(Context context) {
                this.context = context;
            }

            @Override
            protected void onPreExecute() {
                // TODO Auto-generated method stub

                super.onPreExecute();

                pDialog = new ProgressDialog(context);
                pDialog.setIndeterminate(false);
                pDialog.setCancelable(true);
                pDialog.setOnCancelListener(cancelListener);
                pDialog.show();

            }

            @Override
            protected String doInBackground(String... args) {
                // TODO Auto-generated method stub

                // MY STUFF
                return null;
            }

            @Override
            protected void onPostExecute(String args) {
                // TODO Auto-generated method stub

                pDialog.dismiss();

            }

            OnCancelListener cancelListener=new OnCancelListener(){
                @Override
                public void onCancel(DialogInterface arg0){
                    bCancelled=true;
                    SaveImageTask.this.finish(); // <<----"The method finish() is undefined for the type SaveImageTask"
                }
            };


        }

解决方案

Just use,

(Activity(context)).finish();

EDIT:

Actually you have to cast your context to Activity Context,

then you can use finish() method of Activity,

Something like,

private Activity context;

public SaveImageTask(Context context) {
                this.context = (Activity)context;
            }

now, just

context.finish();

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