1.直接上效果图
2.代码
主要就是工具类HtmlService.java:
import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; /** * 获取HTML数据 * * @author David * */ public class HtmlService { public static String getHtml(String path) throws Exception { // 通过网络地址创建URL对象 URL url = new URL(path); // 根据URL // 打开连接,URL.openConnection函数会根据URL的类型,返回不同的URLConnection子类的对象,这里URL是一个http,因此实际返回的是HttpURLConnection HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // 设定URL的请求类别,有POST、GET 两类 conn.setRequestMethod("GET"); //设置从主机读取数据超时(单位:毫秒) conn.setConnectTimeout(5000); //设置连接主机超时(单位:毫秒) conn.setReadTimeout(5000); // 通过打开的连接读取的输入流,获取html数据 InputStream inStream = conn.getInputStream(); // 得到html的二进制数据 byte[] data = readInputStream(inStream); // 是用指定的字符集解码指定的字节数组构造一个新的字符串 String html = new String(data, "utf-8"); return html; } /** * 读取输入流,得到html的二进制数据 * * @param inStream * @return * @throws Exception */ public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len); } inStream.close(); return outStream.toByteArray(); } }
MainActivity.java 修改如下:
public class MainActivity extends Activity { private String path = "http://www.cnblogs.com/yc-755909659/"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView textView = (TextView)this.findViewById(R.id.textView); try { String htmlContent = HtmlService.getHtml(path); textView.setText(htmlContent); } catch (Exception e) { textView.setText("程序出现异常:"+e.toString()); } } }
activity_main.xml 很简单,还是放上来吧
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </ScrollView>
最后,记得添加网络访问权限哦
<uses-permission android:name="android.permission.INTERNET"/>
时间: 2024-10-08 08:10:27