android - How to enable disable location service

activity_main.xml

 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#cfd4ca"     >     <TextView         android:id="@+id/tv"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:textSize="40sp"         android:padding="25sp"         android:fontFamily="sans-serif-condensed"         android:textStyle="bold"         />     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_below="@id/tv"         android:text="Enable Location Service"         /> </RelativeLayout> 

MainActivity.java

 package com.cfsuman.me.androidcodesnippets;  import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Build; import android.provider.Settings; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.view.Window; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {     private Context mContext;      private RelativeLayout mRelativeLayout;     private TextView mTextView;     private Button mButton;      @Override     protected void onCreate(Bundle savedInstanceState) {         // Request window feature action kafe         requestWindowFeature(Window.FEATURE_ACTION_BAR);         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the application context         mContext = getApplicationContext();          // Change the action kafe color         getSupportActionBar().setBackgroundDrawable(                 new ColorDrawable(Color.parseColor("#FF246AB4"))         );          // Get the widgets reference from XML layout         mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);         mButton = (Button) findViewById(R.id.btn);         mTextView = (TextView) findViewById(R.id.tv);          // Check the location service status         if(isLocationEnabled()){             mTextView.setText("Location Service Is Enabled.");             mTextView.setTextColor(Color.BLUE);             mButton.setText("Disable Location Service");         }else {             mTextView.setText("Location Service Is Disabled.");             mTextView.setTextColor(Color.RED);             mButton.setText("Enable Location Service");         }          // Set a click listener for button widget         mButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 Intent locationIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);                 startActivity(locationIntent);             }         });     }      // Better way to check location service status     protected boolean isLocationEnabled(){         if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.KITKAT){             // check location state for api version 19 or greater             int locationMode = Settings.Secure.getInt(                     mContext.getContentResolver(),                     Settings.Secure.LOCATION_MODE,                     0             );              return locationMode != Settings.Secure.LOCATION_MODE_OFF;         }else{             String locationProviders = Settings.Secure.getString(                     mContext.getContentResolver(),                     Settings.Secure.LOCATION_PROVIDERS_ALLOWED                 );             return !TextUtils.isEmpty(locationProviders);         }     }      @Override     public void onResume(){         super.onResume();         // Check the location service status         if(isLocationEnabled()){             mTextView.setText("Location Service Is Enabled.");             mTextView.setTextColor(Color.BLUE);             mButton.setText("Disable Location Service");         }else {             mTextView.setText("Location Service Is Disabled.");             mTextView.setTextColor(Color.RED);             mButton.setText("Enable Location Service");         }     } } 

AnidroidManifest.xml [Permission]

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