如何使通过互联网同步为Android的应用程序 [英] How to make an app that syncs via internet for Android

问题描述

我需要一点帮助，易于理解的方式表述。我试着问在多个论坛这个问题，但是一直得到的答案是回假设即使我指定我在建筑的Andr​​oid和Java只有基本的技能知识。

用户天网是非常有益的，当我问我的最初的问题在这里，但研究的他/她促使我做证明难以跟进。
如何使通过互联网 <同步一个应用程序/ p>

我想要与通过网络更新，每次用户打开应用程序TextView中的应用程序。

什么是做到这一点的最好方法是什么？而我必须做的去做呢？

感谢你在前进！

要得到我该怎么新来这是一个想法，这里是我所发布的应用：的 https://play.google.com/store/apps/details?id=theveshtheva.debatebreaker

编辑：我想的东西，但它似乎并没有工作。有人能告诉我什么，我做错了吗？

我想从中提取数据的网页是在这里：
http://ktjdaily.blogspot.com/2015/02/menu-of -day.html

下面是我的活动的Java文件：

\r

\r

包theveshtheva.practice;\r
\r
进口android.support.v7.app.ActionBarActivity;\r
进口android.os.Bundle;\r
进口android.view.Menu;\r
进口android.view.MenuItem;\r
\r
进口java.io.BufferedReader中;\r
进口java.io.IOException异常;\r
进口java.io.InputStreamReader中;\r
进口android.widget.TextView;\r
\r
进口org.apache.http.Htt presponse;\r
进口org.apache.http.client.HttpClient;\r
进口org.apache.http.client.methods.HttpGet;\r
进口org.apache.http.impl.client.DefaultHttpClient;\r
进口org.apache.http.protocol.BasicHttpContext;\r
进口org.apache.http.protocol.HttpContext;\r
\r
\r
公共类onlinetext扩展ActionBarActivity {\r
\r
\r
    私人字符串HTML;\r
\r
    @覆盖\r
    公共无效的onCreate（捆绑savedInstanceState）{\r
        super.onCreate（savedInstanceState）;\r
        的setContentView（R.layout.activity_onlinetext）;\r
\r
        /*从这里*/\r
        TextView的输出文本=（的TextView）findViewById（R.id.textView）;\r
\r
        尝试{\r
            getHTML（）;\r
        }赶上（例外五）{\r
            e.printStackTrace（）;\r
        }\r
        outtext.setText（+ HTML）;\r
        /*到这里*/\r
    }\r
\r
    私人无效getHTML（）抛出IOException异常\r
\r
    {\r
        HttpClient的HttpClient的=新DefaultHttpClient（）;\r
        HttpContext的localContext =新BasicHttpContext（）;\r
        HTTPGET HTTPGET =新HTTPGET（http://ktjdaily.blogspot.com/2015/02/menu-of-day.html）; // URL！\r
        HTT presponse响应= httpClient.execute（HTTPGET，localContext）;\r
        字符串结果=;\r
\r
        读者的BufferedReader =新的BufferedReader（新的InputStreamReader（response.getEntity（）的getContent（）））;\r
\r
        串线;\r
        而（（行= reader.readLine（））！= NULL）{\r
            结果+ =行+\\ n;\r
            HTML =结果;\r
        }\r
\r
    }\r
\r
    @覆盖\r
    公共布尔onCreateOptionsMenu（菜单菜单）{\r
        //充气菜单;如果是present这增加了项目操作栏。\r
        。getMenuInflater（）膨胀（R.menu.menu_onlinetext，菜单）;\r
        返回true;\r
    }\r
\r
    @覆盖\r
    公共布尔onOptionsItemSelected（菜单项项）{\r
        //处理动作栏项目点击这里。操作栏会\r
        //自动处理上点击主页/向上按钮，只要\r
        //你在AndroidManifest.xml中指定一个父活动。\r
        INT ID = item.getItemId（）;\r
\r
        // noinspection SimplifiableIfStatement\r
        如果（ID == R.id.action_settings）{\r
            返回true;\r
        }\r
\r
        返回super.onOptionsItemSelected（项目）;\r
    }\r
}

\r

\r

\r

和这里的清单文件，在这里我设置权限：

\r

\r

＆LT;？XML版本=1.0编码=UTF-8？ ＆GT;\r
＆LT;清单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android包=theveshtheva.practice＆GT;\r
\r
  ＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;\r
\r
  ＆lt;应用机器人：allowBackup =真正的机器人：图标=@绘制/ ic_launcher机器人：标签=@字符串/ APP_NAME机器人：主题=@风格/ AppTheme＆GT;\r
    ＆LT;活动机器人：名字=机器人onlinetext：标签=@字符串/ APP_NAME＆GT;\r
      ＆所述;意图滤光器＆gt;\r
        ＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT;\r
\r
        ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;\r
      ＆所述; /意图滤光器＆gt;\r
    ＆LT; /活性GT;\r
  ＆LT; /用途＆gt;\r
\r
＆LT; /清单＆GT;

\r

\r

\r

解决方案

你要更新什么：布局或内容？你知道如何连接到一个网站，使一个GET请求？

I need a bit of help phrased in easy to understand terms. I've tried asking this question on multiple forums, but keep getting answers back that assume some knowledge even though I specified that I have only rudimentary skills in Android building and Java.

The user Skynet was very helpful when I asked my initial question here, but the research he/she prompted me to do proved difficult to follow up on. How to make an app that syncs via internet

I want to make an app with a textview that updates via internet everytime the user open the app.

What is the best way to do this? And what would I have to do to do it?

Thank you in advance!

To get an idea of how new to this I am, here's an app I've published: https://play.google.com/store/apps/details?id=theveshtheva.debatebreaker

EDIT: I'm trying something but it doesn't seem to work. Could someone tell me what I'm doing wrong?

The webpage I'm trying to pull data from is here: http://ktjdaily.blogspot.com/2015/02/menu-of-day.html

Here's my activity java file:

package theveshtheva.practice;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import android.widget.TextView;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;


public class onlinetext extends ActionBarActivity {


    private String HTML;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_onlinetext);

        /*FROM HERE*/
        TextView outtext = (TextView) findViewById(R.id.textView);

        try {
            getHTML();
        } catch (Exception e) {
            e.printStackTrace();
        }
        outtext.setText("" + HTML);
        /*TO HERE*/
    }

    private void getHTML() throws IOException

    {
        HttpClient httpClient = new DefaultHttpClient();
        HttpContext localContext = new BasicHttpContext();
        HttpGet httpGet = new HttpGet("http://ktjdaily.blogspot.com/2015/02/menu-of-day.html"); //URL!
        HttpResponse response = httpClient.execute(httpGet, localContext);
        String result = "";

        BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

        String line;
        while ((line = reader.readLine()) != null) {
            result += line + "\n";
            HTML = result;
        }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_onlinetext, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

And here's the Manifest file, where I've set permissions:

<?xml version="1.0" encoding="utf-8" ?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="theveshtheva.practice">

  <uses-permission android:name="android.permission.INTERNET" />

  <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme">
    <activity android:name=".onlinetext" android:label="@string/app_name">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
  </application>

</manifest>

解决方案

What do you want to update: layout or content? Do you know how to connect to a site and make a get request?

这篇关于如何使通过互联网同步为Android的应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！