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   源码介绍

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public class HttpActivity extends Activity {

	private Button mButton1, mButton2;
	private TextView mTextView1;

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		mButton1 = (Button) findViewById(R.id.myButton1);
		mButton2 = (Button) findViewById(R.id.myButton2);
		mTextView1 = (TextView) findViewById(R.id.myTextView1);

		mButton1.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				String uriAPI = "http://www.sina.com";

				HttpPost httpRequest = new HttpPost(uriAPI);
				List<NameValuePair> params = new ArrayList<NameValuePair>();
				params.add(new BasicNameValuePair("str", "post string"));
				try {
					httpRequest.setEntity(new UrlEncodedFormEntity(params,
							HTTP.UTF_8));
					HttpResponse httpResponse = new DefaultHttpClient()
							.execute(httpRequest);

					if (httpResponse.getStatusLine().getStatusCode() == 200) {

						String strResult = EntityUtils.toString(httpResponse
								.getEntity());
						mTextView1.setText(strResult);
					} else {
						mTextView1.setText("Error Response: "
								  httpResponse.getStatusLine().toString());
					}
				} catch (ClientProtocolException e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				} catch (IOException e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				} catch (Exception e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				}

			}
		});

		mButton2.setOnClickListener(new Button.OnClickListener() {

			public void onClick(View v) {

				String uriAPI = "http://www.sina.com";

				HttpGet httpRequest = new HttpGet(uriAPI);
				try {

					HttpResponse httpResponse = new DefaultHttpClient()
							.execute(httpRequest);

					if (httpResponse.getStatusLine().getStatusCode() == 200) {

						String strResult = EntityUtils.toString(httpResponse
								.getEntity());

						strResult = eregi_replace("(\r\n|\r|\n|\n\r)", "",
								strResult);
						mTextView1.setText(strResult);
					} else {
						mTextView1.setText("Error Response: "
								  httpResponse.getStatusLine().toString());
					}
				} catch (ClientProtocolException e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				} catch (IOException e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				} catch (Exception e) {
					mTextView1.setText(e.getMessage().toString());
					e.printStackTrace();
				}
			}
		});
	}

	public String eregi_replace(String strFrom, String strTo, String strTarget) {
		String strPattern = "(?i)"   strFrom;
		Pattern p = Pattern.compile(strPattern);
		Matcher m = p.matcher(strTarget);
		if (m.find()) {
			return strTarget.replaceAll(strFrom, strTo);
		} else {
			return strTarget;
		}
	}
}