下载一个网站的字符串 [英] Downloading a website to a string
问题描述
已经做了一些基本的教程,我开始做在eclipse我第一次真正的Android应用程序。我想这个应用程序,以检查是否在一个EditText文本网站上的文字(匹配这个: HTTP ://www.augustinianum.eu/roosterwijzigingen/14062012.pdf (它包含了我的学校的日程安排变化))。我已经找到了如何让应用程序检查,如果在的EditText文本字符串相匹配(用方法包含()),所以现在我需要做的唯一的事情是所有网站的文本下载到串。但我不知道怎么样。或者是有可能,我可以检查,如果一个网站包含的某个词,而无需下载网站的文本字符串的方法。
感谢您!
(顺便说一句,我不是英语,所以嘿原谅我,如果我做了一些语言相关的错误。)
@androider我不能发布我的code在评论栏中所以在这里,它是:
包me.moop.mytwitter;
进口java.io.BufferedReader中;
进口java.io.IOException异常;
进口java.io.InputStreamReader中;
进口java.net.MalformedURLException;
进口的java.net.URL;
进口android.os.Bundle;
进口android.view.View;
进口android.widget.Button;
进口android.widget.EditText;
进口android.widget.TextView;
进口android.widget.Toast;
进口android.app.Activity;
进口android.app.ProgressDialog;
公共类MainActivity延伸活动{
按钮mBtnCheck;
的EditText mEtxtGroup;
ProgressDialog mProgressDialog;
TwitterUser mTwitterUser;
TextView的mTxtv1;
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.nicelayout3);
mBtnCheck =(按钮)findViewById(R.id.btnCheck);
mEtxtGroup =(EditText上)findViewById(R.id.etxtGroup);
mTxtv1 =(TextView中)findViewById(R.id.textView1);
}
公共无效checkScheduleChange(查看视图){
如果(查看== mBtnCheck){
弦乐群;
。组= mEtxtGroup.getText()的toString();
如果(group.length()大于0){
mProgressDialog =新ProgressDialog(本);
mProgressDialog.setMessage(Bezig满足checken VOOR roosterwijzigingen ......);
mProgressDialog.show();
尝试
{
网址URL =新的URL(http://www.augustinianum.eu/roosterwijzigingen/14062012.pdf);
的BufferedReader在=新的BufferedReader(新的InputStreamReader(url.openStream()));
字符串str;
而((海峡= in.readLine())!= NULL){
mProgressDialog.dismiss();
如果(str.contains(mEtxtGroup.getText()的toString())){
Toast.makeText(这一点,ühebt EEN roosterwijziging,Toast.LENGTH_LONG).show();
}
其他{
Toast.makeText(这一点,U hebt吉恩roosterwijzigingen,Toast.LENGTH_LONG).show();
}
}
附寄();
}赶上(MalformedURLException异常E){
Toast.makeText(这一点,二是EEN FOUT opgetreden,probeer opniew,Toast.LENGTH_LONG).show();
}赶上(IOException异常E){
Toast.makeText(这一点,二是EEN FOUT opgetreden,probeer opniew,Toast.LENGTH_LONG).show();
}
}
其他{
Toast.makeText(此,Toast.LENGTH_LONG在Voer EEN KLAS).show();
}
}
}
}
下面是按钮的属性:
<按钮
机器人:ID =@ + ID / btnCheck
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
机器人:layout_alignParentLeft =真
机器人:layout_alignParentTop =真
机器人:可点击=真
机器人:的onClick =checkScheduleChange
机器人:文本=检查>
您可以使用InputStream的阅读器这样的文字。
尝试
{
网址URL =新的URL(http://yourwebpage.com);
//读取所有服务器返回的文本
的BufferedReader在=新的BufferedReader(新的InputStreamReader(url.openStream()));
字符串str;
而((海峡= in.readLine())!= NULL)
{
// str是一行文本;的readLine()条换行符(S)
//可以使用含有方法在这里。
如果(str.contains(editText.getText()的toString))
{
你可以在这里完成你的逻辑!!!!!
}
}
附寄();
}赶上(MalformedURLException异常E){
}赶上(IOException异常E){
}
另外,在您的应用程序添加一个额外的权限清单文件:
<使用-权限的Android:名称=android.permission.INTERNET对/>
// ============================编辑============= =================== //
如果(group.length()0)
{
mProgressDialog =新ProgressDialog(本);
mProgressDialog.setMessage(Bezig满足checken VOOR roosterwijzigingen ......);
mProgressDialog.show();
尝试
{
网址URL =新的URL(http://www.augustinianum.eu/roosterwijzigingen/14062012.pdf);
的BufferedReader在=新的BufferedReader(新的InputStreamReader(url.openStream()));
字符串str;
而((海峡= in.readLine())!= NULL){
如果(str.contains(mEtxtGroup.getText()的toString())){
如果(mProgressDialog.isShowing())
{
mProgressDialog.dismiss();
}
Toast.makeText(这一点,ühebt EEN roosterwijziging,Toast.LENGTH_LONG).show();
打破;
}
}
附寄();
}赶上(MalformedURLException异常E){
Toast.makeText(这一点,二是EEN FOUT opgetreden,probeer opniew,Toast.LENGTH_LONG).show();
}赶上(IOException异常E){
Toast.makeText(这一点,二是EEN FOUT opgetreden,probeer opniew,Toast.LENGTH_LONG).show();
}
如果(mProgressDialog.isShowing())
{
mProgressDialog.dismiss();
}
}
其他{
Toast.makeText(此,Toast.LENGTH_LONG在Voer EEN KLAS).show();
}
Having done some basic tutorials, I started making my first real android app in eclipse. I want this app to check if the text in an EditText matches the text on a website (this one: http://www.augustinianum.eu/roosterwijzigingen/14062012.pdf (it contains my school's schedule changes)). I've found out how to make the app check if the text in the EditText matches a string (with the method contains()), so now the only thing I need to do is to download all of the text of that website to a string. But I have no idea how to. Or is there maybe a method which I can check with if a website contains a certain word without downloading the website's text to a string.
Thank You!
(BTW I'm not English so plz forgive me if I've made some language-related mistakes.)
@androider I can't post my code in the comment box so here it is:
package me.moop.mytwitter;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import android.app.ProgressDialog;
public class MainActivity extends Activity {
Button mBtnCheck;
EditText mEtxtGroup;
ProgressDialog mProgressDialog;
TwitterUser mTwitterUser;
TextView mTxtv1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.nicelayout3);
mBtnCheck = (Button) findViewById(R.id.btnCheck);
mEtxtGroup = (EditText) findViewById(R.id.etxtGroup);
mTxtv1 = (TextView) findViewById(R.id.textView1);
}
public void checkScheduleChange(View view){
if (view == mBtnCheck){
String group;
group = mEtxtGroup.getText().toString();
if (group.length() > 0){
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setMessage("Bezig met checken voor roosterwijzigingen...");
mProgressDialog.show();
try
{
URL url = new URL("http://www.augustinianum.eu/roosterwijzigingen/14062012.pdf");
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
String str;
while ((str = in.readLine()) != null){
mProgressDialog.dismiss();
if(str.contains(mEtxtGroup.getText().toString())){
Toast.makeText(this, "U hebt een roosterwijziging.", Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(this, "U hebt geen roosterwijzigingen", Toast.LENGTH_LONG).show();
}
}
in.close();
} catch (MalformedURLException e) {
Toast.makeText(this, "Er is een fout opgetreden, probeer opniew.", Toast.LENGTH_LONG).show();
} catch (IOException e) {
Toast.makeText(this, "Er is een fout opgetreden, probeer opniew.", Toast.LENGTH_LONG).show();
}
}
else{
Toast.makeText(this, "Voer een klas in", Toast.LENGTH_LONG).show();
}
}
}
}
Here are the button's properties:
<Button
android:id="@+id/btnCheck"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:clickable="true"
android:onClick="checkScheduleChange"
android:text="Check" >
You can get the text using InputStream Reader like this.
try
{
URL url = new URL("http://yourwebpage.com");
// Read all the text returned by the server
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
String str;
while ((str = in.readLine()) != null)
{
// str is one line of text; readLine() strips the newline character(s)
// You can use the contain method here.
if(str.contains(editText.getText().toString))
{
You can perform your logic here!!!!!
}
}
in.close();
} catch (MalformedURLException e) {
} catch (IOException e) {
}
Also add an additional permission in your apps Manifest file:
<uses-permission android:name="android.permission.INTERNET/>
//============================EDIT================================//
if (group.length() > 0)
{
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setMessage("Bezig met checken voor roosterwijzigingen...");
mProgressDialog.show();
try
{
URL url = new URL("http://www.augustinianum.eu/roosterwijzigingen/14062012.pdf");
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
String str;
while ((str = in.readLine()) != null){
if(str.contains(mEtxtGroup.getText().toString())){
if(mProgressDialog.isShowing())
{
mProgressDialog.dismiss();
}
Toast.makeText(this, "U hebt een roosterwijziging.", Toast.LENGTH_LONG).show();
break;
}
}
in.close();
} catch (MalformedURLException e) {
Toast.makeText(this, "Er is een fout opgetreden, probeer opniew.", Toast.LENGTH_LONG).show();
} catch (IOException e) {
Toast.makeText(this, "Er is een fout opgetreden, probeer opniew.", Toast.LENGTH_LONG).show();
}
if(mProgressDialog.isShowing())
{
mProgressDialog.dismiss();
}
}
else{
Toast.makeText(this, "Voer een klas in", Toast.LENGTH_LONG).show();
}
这篇关于下载一个网站的字符串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!