第一阶段代码输完了以后，运行，不能出现 百度的网页，显示空白，怎么回事啊
如题，代码
HttpThread.java
package com.jupiter.httpdemo;
import android.os.Handler;
import android.webkit.WebView;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
public class HttpThread extends Thread{
private String url;
private WebView webView;
private Handler handler;
public HttpThread(String url, WebView webView, Handler handler) {
this.url = url;
this.webView = webView;
this.handler = handler;
}
@Override
public void run() {
try {
URL httpsUrl = new URL(url);
try {
HttpsURLConnection conn = (HttpsURLConnection)httpsUrl.openConnection();
conn.setReadTimeout(5000); //请求超时时间
conn.setRequestMethod("GET"); //请求方式为 GET
final StringBuffer sb = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String str;
while ((str = reader.readLine())!= null){
sb.append(str);
}
handler.post(new Runnable() {
@Override
public void run() {
webView.loadDataWithBaseURL(url, sb.toString(), "text/html", "uft-8", null);
}
});
} catch (IOException e) {
e.printStackTrace();
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}MainActivity.java
package com.jupiter.httpdemo;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebView;
public class MainActivity extends AppCompatActivity {
private String url ="http://www.baidu.com/";
private WebView wevView;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wevView = (WebView)findViewById(R.id.webView);
new HttpThread("http://www.baidu.com",wevView,handler).start();
}
}
