BLOG GUE WANGI

Perbandingan String

cara menggunakan perbandingan di string yaitu menggunakan equals()
sperti beriku:

String a,b;
a="nilai pertama";
b="nilai kedua";

if(a.equals(b)){lakukan sesuatu}

keterangan : a.equals(b)  artinya  a==b

Maklumlah Kalau Ga mirip :""v masih noob euuy :"v

Step By Step

Sekarang saya akan bagikan script untuk mengScan daftar wifi yang aktif

1.MainActivity.java

package com.melki.droid;

import java.util.List;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    TextView mainText;
    WifiManager mainWifi;
    WifiReceiver receiverWifi;
    List<ScanResult> wifiList;
    StringBuilder sb = new StringBuilder();

    public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);
mainText = (TextView) findViewById(R.id.lihat);

// Initiate wifi service manager
mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);

// Check for wifi is disabled
if (mainWifi.isWifiEnabled() == false)
{  
// If wifi disabled then enable it
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled",
   Toast.LENGTH_LONG).show();

mainWifi.setWifiEnabled(true);
}

// wifi scaned value broadcast receiver
receiverWifi = new WifiReceiver();

// Register broadcast receiver
// Broacast receiver will automatically call when number of wifi connections changed
registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mainWifi.startScan();
mainText.setText("Starting Scan...");
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add(0, 0, 0, "Refresh");
        return super.onCreateOptionsMenu(menu);
    }

    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        mainWifi.startScan();
        mainText.setText("Starting Scan");
        return super.onMenuItemSelected(featureId, item);
    }

    protected void onPause() {
        unregisterReceiver(receiverWifi);
        super.onPause();
    }

    protected void onResume() {
        registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
        super.onResume();
    }

    // Broadcast receiver class called its receive method
    // when number of wifi connections changed

    class WifiReceiver extends BroadcastReceiver {

        // This method call when number of wifi connections changed
        public void onReceive(Context c, Intent intent) {

            sb = new StringBuilder();
            wifiList = mainWifi.getScanResults();
            sb.append("\n        Number Of Wifi connections :"+wifiList.size()+"\n\n");

            for(int i = 0; i < wifiList.size(); i++){

                sb.append(new Integer(i+1).toString() + ". ");
                sb.append((wifiList.get(i)).toString());
                sb.append("\n\n");
            }

            mainText.setText(sb); 
        }

    }}

2.main.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent">

<TextView
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_width="wrap_content"
android:id="@+id/lihat"/>

</ScrollView>

3.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mycompany.myapp" >
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/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>