本文介绍了如何从网页中提取文本的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
首先,是的,我对这个问题做过研究。是的,我已经在这里找到了答案。但整个过程仍然不是为我工作。所有我需要做的就是抢文本关闭一个像谷歌网页,并从它创建抓住文本字符串。这里是我的code在它前面提到的教程code:
public class Searching_Animation_Screen extends ActionBarActivity {
TextView loading_txt;
Animation blink;
public String pre_split;
public String[] split_string;
TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_searchinganimationscreen);
ActionBar actionBar = getSupportActionBar();
actionBar.hide();
int width = getWindowManager().getDefaultDisplay().getWidth();
loading_txt = (TextView)findViewById(R.id.loading);
text =(TextView)findViewById(R.id.textView);
Typeface pacifico_typeface = Typeface.createFromAsset(getAssets(), "fonts/pacifico.ttf");
loading_txt.setTypeface(pacifico_typeface);
loading_txt.setTextSize(width / 20);
blink = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.blink);
loading_txt.setAnimation(blink);
Begin();
}
private void Begin() {
Intent SEARCH_INTENT = getIntent();
pre_split=SEARCH_INTENT.getStringExtra("Search_Text");
split_string = pre_split.split(" ");
}
@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_searchinganimationscreen, 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);
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
String google_url ="https://www.google.com/#safe=active&q=";
@Override
protected String doInBackground(String... urls) {
String response = "";
for (String url : urls) {
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse execute = client.execute(httpGet);
InputStream content = execute.getEntity().getContent();
BufferedReader buffer = new BufferedReader(
new InputStreamReader(content));
String s = "";
while ((s = buffer.readLine()) != null) {
response += s;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return response;
}
@Override
protected void onPostExecute(String result) {
text.setText(Html.fromHtml(result));
//throw into summarizer
}
public void readWebpage(View view) {
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] {"www.google.com"});
}
}
}
Android的工作室是在说 readWebpage
从未使用过,与实际 DownloadWebPageTask
类一起。有任何想法吗?我想这个类立即上运行的创建。谢谢!
推荐答案
@Ethan,当然,我希望这是你想要的,只是增加了onCreate方法的readWebpage方法,但我修改它,并删除了View对象,因为它不被使用,
public class Searching_Animation_Screen extends ActionBarActivity {
TextView loading_txt;
Animation blink;
public String pre_split;
public String[] split_string;
TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_searchinganimationscreen);
ActionBar actionBar = getSupportActionBar();
actionBar.hide();
int width = getWindowManager().getDefaultDisplay().getWidth();
loading_txt = (TextView)findViewById(R.id.loading);
text =(TextView)findViewById(R.id.textView);
Typeface pacifico_typeface = Typeface.createFromAsset(getAssets(), "fonts/pacifico.ttf");
loading_txt.setTypeface(pacifico_typeface);
loading_txt.setTextSize(width / 20);
blink = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.blink);
loading_txt.setAnimation(blink);
Begin();
//* call webpage here,
//* note, i removed passing the view object since it is not being used
readWebpage()
}
//* (modify) by remvoving it from the code below
//* and removing the view object since it is not being used
public void readWebpage() {
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] {"http://www.google.com"});
}
private void Begin() {
Intent SEARCH_INTENT = getIntent();
pre_split=SEARCH_INTENT.getStringExtra("Search_Text");
split_string = pre_split.split(" ");
}
@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_searchinganimationscreen, 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);
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
String google_url ="https://www.google.com/#safe=active&q=";
@Override
protected String doInBackground(String... urls) {
String response = "";
for (String url : urls) {
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse execute = client.execute(httpGet);
InputStream content = execute.getEntity().getContent();
BufferedReader buffer = new BufferedReader(
new InputStreamReader(content));
String s = "";
while ((s = buffer.readLine()) != null) {
response += s;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return response;
}
@Override
protected void onPostExecute(String result) {
text.setText(Html.fromHtml(result));
//throw into summarizer
}
}
}
这篇关于如何从网页中提取文本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!