-2
请帮助我。通过单击TextView代码html页面中的按钮可以显示一个简单的应用程序。我尝试在android 2.3上运行...作品。但在Android 4.2与按下错误起飞“不幸的是,name_app已停止”。URLConnection Android 4.2不起作用
MainActivity.java
public class MainActivity extends Activity {
TextView txtview;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtview = (TextView) findViewById(R.id.txtview);
}
public void OnClickBtn (View v) {
URL url = null;
try {
url = new URL("http://ya.ru/");
URLConnection con1 = url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(con1.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null){
txtview.append(line);
}
} catch (Exception e){
}
}
}
的Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test">
<uses-sdk android:minSdkVersion="10" android:targetSdkVersion="17" android:maxSdkVersion="17"/>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
也许是在Android SDK。我正在编写另一个应用程序,您想在互联网上查询。在Android 2.3上运行,但不适用于4.2。
重复[android.os.NetworkOnMainThreadException](http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception) – 323go 2013-03-27 18:32:56