In this Android tutorial, we are going to learn how to use android Easy Permission Library in our project to check and request for android version 6 and above run-time permissions.EasyPermissions is a wrapper library to simplify basic system permissions logic when targeting Android M or higher. Using EasyPermissions to check if the app already has the required permissions. This method can take any number of permissions as its final argument.

In ManiFest File: –

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

First Add Dependency in build.gradle: –

dependencies {

compile 'pub.devrel:easypermissions:0.2.0'

}

Second Make a Java File: –

package com.example.safal.sahilapp.easyPermission;
import android.Manifest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.example.safal.sahilapp.R;
import java.util.List;
import pub.devrel.easypermissions.AppSettingsDialog;
import pub.devrel.easypermissions.EasyPermissions;
public class EasyPermission extends AppCompatActivity implements EasyPermissions.PermissionCallbacks {
private static final String TAG = "MainActivity";
private static final int RC_CAMERA_PERM = 123;
private static final int RC_LOCATION_CONTACTS_PERM = 124;
private static final int RC_SETTINGS_SCREEN = 125;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_easy_permission);
findViewById(R.id.button_location_and_wifi).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
locationAndContactsTask();
}
});
}
public void locationAndContactsTask() {
String[] perms = { Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.READ_CONTACTS, Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE  };

// If you need more permission on this braces
if (EasyPermissions.hasPermissions(this, perms)) {
        } else {
            EasyPermissions.requestPermissions(this, "This app needs access to your location and contacts to know where and who you are.",
RC_LOCATION_CONTACTS_PERM, perms);
}
}
@Override
public void onPermissionsGranted(int requestCode, List<String> perms) {
Log.d(TAG, "onPermissionsGranted:" + requestCode + ":" + perms.size());
}
@Override
public void onPermissionsDenied(int requestCode, List<String> perms) {
Log.d(TAG, "onPermissionsDenied:" + requestCode + ":" + perms.size());
if (EasyPermissions.somePermissionPermanentlyDenied(this, perms)) {
new AppSettingsDialog.Builder(this, "This app may not work correctly without the requested permissions. Open the app settings screen to modify app permissions.")
.setTitle("Permissions Required")
.setPositiveButton("Settings")
.setNegativeButton("Cancel", null)
.setRequestCode(RC_SETTINGS_SCREEN)
.build()
.show();
}
}
}