android url always return empty string

July 1, 2015 0 Comments

so here is my code, and i’ve tried the getContent on the basic java and it works fine. but here it doesn’t at all. the content of the url i load is always empty. i’ve also added the permission.INTERNET to the manifest. i’m new to android

@Override
protected void onCreate(Bundle savedInstanceState) {
    String lines="";
    try {
        lines=getContent("http://detik.com");
    }catch (Exception e) {e.printStackTrace();}
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
    alertDialogBuilder.setMessage(lines);

    alertDialogBuilder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface arg0, int arg1) {
            Toast.makeText(MainActivity.this, "You clicked yes button", Toast.LENGTH_LONG).show();
        }
    });

    alertDialogBuilder.setNegativeButton("No",new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            finish();
        }
    });

    AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public static String getContent(String url) {
    String pageContent="";
    try
    {
        URL pageLink=new URL(url);
        BufferedReader in=new BufferedReader(new InputStreamReader(pageLink.openStream()));

        String line=in.readLine();
        while (line!=null)
        {
            pageContent=pageContent+line;
            line=in.readLine();
        }
        in.close();
    } catch (Exception e) {e.printStackTrace();}
    return "content of "+url+" : "+pageContent;
}

and this is my manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.myuser.testtabview" >
<uses-permission android:name="android.permission.INTERNET"/>

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
</manifest>

Source: android