Turn ON wifi programmatically

Android Turn ON wifi  programmatically

Coding for Enable WIFI programmatically.

Activity.class

import android.app.Activity;

import android.content.Context;

import android.net.wifi.WifiManager;

import android.os.Bundle;

import android.widget.TextView;

public class WifiEnableActivity extends Activity {

    /** Called when the activity is first created. */

    private WifiManager wifiManager; 

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE); 

       TextView text = (TextView)findViewById(R.id.txtWiFi);

          wifiManager.setWifiEnabled(true); 

          if(wifiManager.isWifiEnabled()){

              text.setText("Wifi State Enabled");

          }

        

    }

}

Then  some permission and user feature required in manifest file.

  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> 

    <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS"></uses-permission> 

    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission> 

    <uses-feature android:name="android.hardware.wifi.direct" />

    <uses-permission    android:name="android.permission.INTERNET" /> 

    <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> 

Download Source Code

Toast notification show Different Gravity

Toast notify we can show in different gravity like "TOP", "RIGHT", "LEFT", "BOTTOM",etc.

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
       
        Toast t = Toast.makeText(MainActivity.this, "TOP | RIGHT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.TOP|Gravity.RIGHT, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "CENTER", Toast.LENGTH_LONG);
        t.setGravity(Gravity.CENTER, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "BOTTOM | LEFT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.BOTTOM|Gravity.LEFT, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "CENTER | LEFT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.CENTER|Gravity.LEFT, 0, 0);
        t.show();
    
    }
   
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}