public class MainActivity extends Activity {
public static LinearLayout layout = null;
public static EditText urlstring = null;
public static Button submit = null;
public static ListView emailsfound = null;
public static ArrayList<String> emaillist = new ArrayList<String>();
public static ArrayList<String> urllist = new ArrayList<String>();
public static ArrayAdapter<String> adapter = null;
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
layout = new LinearLayout(this);
urlstring = new EditText(this);
submit = new Button(this);
submit.setText("Submit");
emailsfound = new ListView(this);
layout.setOrientation(LinearLayout.VERTICAL);
layout.addView(urlstring);
layout.addView(submit);
layout.addView(emailsfound);
setContentView(layout);
adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, emaillist);
emailsfound.setAdapter(adapter);
submit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
urllist.add(urlstring.getText().toString());
int i = 0;
while (true) {
String page = getPage(urlstring.getText().toString());
ArrayList<String> urls = new ArrayList<String>();
urls = getURLs(page);
ArrayList<String> addresses = new ArrayList<String>();
addresses = getAddresses(page);
for (int a = 0; i < urls.size(); i++) {
urllist.add(urls.get(a));
}
for (int a = 0; a < addresses.size(); i++) {
emaillist.add(addresses.get(a));
}
removeDuplicates(urllist);
removeDuplicates(emaillist);
adapter.notifyDataSetChanged();
i++;
urlstring.setText(urllist.get(i).toString());
}
}
;
});
}
public String getPage(String url) {
if (url.toLowerCase().startsWith("http") == false) {
url = "http://" + url;
}
URL fromstring = null;
URLConnection openConnection = null;
try {
fromstring = new URL(url);
openConnection = fromstring.openConnection();
BufferedReader in = null;
url = "";
in = new BufferedReader(new InputStreamReader(openConnection.getInputStream()));
String input = "";
if (in != null) {
while ((input = in.readLine()) != null) {
url = url + input + "\r\n";
}
in.close();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return url;
}
public ArrayList<String> getURLs(String page) {
ArrayList<String> s = new ArrayList<String>();
while (page.toLowerCase().contains("<a href=\"http")) {
int i = page.toLowerCase().indexOf("href=\"http") + "href=\"".length();
if (i > -1) {
String s1 = page.substring(i, page.toLowerCase().indexOf("\"", i));
s.add(s1);
page = page.substring(i + "http".length());
}
}
return s;
}
public boolean validate(String email) {
Pattern pattern;
Matcher matcher;
final String EMAIL_PATTERN = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*" + "@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
pattern = Pattern.compile(EMAIL_PATTERN);
matcher = pattern.matcher(email);
return matcher.matches();
}
public ArrayList<String> getAddresses(String page) {
ArrayList<String> s = new ArrayList<String>();
while (page.contains("@")) {
int i = page.indexOf("@");
if (i > -1) {
int beginning = page.lastIndexOf(" ", i);
if (beginning > -1) {
int ending = page.indexOf(" ", i);
if (ending > -1) {
String address = page.substring(beginning + 1, ending - 1);
address = address.toLowerCase();
if (address.startsWith("href=\"mailto:")) {
int b = address.indexOf(":") + 1;
address = address.substring(b);
int e = address.indexOf("\"");
if (e > -1) {
if (e > address.indexOf("@")) {
address = address.substring(0, address.indexOf("\""));
}
if (address.contains("?")) {
address = address.substring(0, address.indexOf("?"));
}
if (!address.contains("<") && !address.contains(">")) {
if (validate(address)) {
s.add(address);
}
}
} else {
int b2 = address.indexOf(">") + 1;
if (b2 > -1) {
if (b2 < address.indexOf("@")) {
address = address.substring(b2);
}
}
int e2 = address.indexOf("<");
if (e2 > -1) {
if (e2 > address.indexOf("@")) {
address = address.substring(0, e2);
}
}
if (!address.contains("<") && !address.contains(">")) {
if (validate(address)) {
s.add(address);
}
}
}
}
}
}
}
page = page.substring(i + 1);
}
return s;
}
public ArrayList<String> removeDuplicates(ArrayList<String> List) {
ArrayList<String> output = new ArrayList<String>();
for (int i = 0; i < List.size(); i++) {
boolean b = false;
for (int a = 0; a < List.size(); i++) {
if (List.get(i).toString().toLowerCase().equals(List.get(a).toString().toLowerCase())) {
b = true;
}
}
if (b == false) {
output.add(List.get(i));
}
}
return output;
}
}
这个程序是在安卓上网本上用 AIDE 制作的。它在按钮单击时崩溃。我想知道我做错了什么。我之前尝试过使用runnables，但它也崩溃了。我是 android 开发的新手，但我精通 Java。我注意到android和Java之间有很多差异。