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resolves yannbf#2 
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‎src/pages/miscellaneous/runtime-permissions/README.md

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On newer android versions, permissions are handled differently. In most of the cases, the plugins take care of the permissions, but sometimes there are some exceptions.
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In order to ask or check for user permissions, the Diagnostic plugin is needed.
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Docs: https://ionicframework.com/docs/v2/native/diagnostic/
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You have to install the plugin with:
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```sh
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$ ionic plugin add cordova.plugins.diagnostic --save
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```
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$ ionic plugin add cordova.plugins.diagnostic --save

‎src/pages/miscellaneous/runtime-permissions/runtime-permissions.html

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Ionic pages and navigation.
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-->
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<ion-header>
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<ion-navbar>
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<ion-title>RuntimePermissions</ion-title>
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</ion-navbar>
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</ion-header>
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<ion-content padding>
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<ion-grid>
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<ion-row>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.READ_EXTERNAL)">Read External</button>
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</ion-col>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.WRITE_EXTERNAL)">Write External</button>
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</ion-col>
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</ion-row>
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<ion-row>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.CAMERA)">Use Camera</button>
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</ion-col>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.READ_CONTACTS)">Read Contacts</button>
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</ion-col>
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</ion-row>
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<ion-row>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.RECORD_AUDIO)">Record Audio</button>
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</ion-col>
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<ion-col>
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<button ion-button full (click)="requestPermission(PERMISSION.CALL_PHONE)">Call Phone</button>
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</ion-col>
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</ion-row>
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</ion-grid>
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<button ion-button full (click)="requestPermission(PERMISSION.WRITE_EXTERNAL)">Read/Write External</button>
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<button ion-button full (click)="requestCameraPermission()">Use Camera</button>
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<button ion-button full (click)="requestAllPermissions()">All requests at once</button>
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</ion-content>
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</ion-content>

‎src/pages/miscellaneous/runtime-permissions/runtime-permissions.ts

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})
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export class RuntimePermissionsPage {
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// You can add many other permissions
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PERMISSION = {
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WRITE_EXTERNAL: Diagnostic.permission.WRITE_EXTERNAL_STORAGE,
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READ_EXTERNAL: Diagnostic.permission.READ_EXTERNAL_STORAGE,
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CAMERA: Diagnostic.permission.CAMERA,
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READ_CONTACTS: Diagnostic.permission.READ_CONTACTS,
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RECORD_AUDIO: Diagnostic.permission.RECORD_AUDIO,
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CALL_PHONE: Diagnostic.permission.CALL_PHONE,
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};
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constructor(public navCtrl: NavController, public navParams: NavParams) { }
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// You can use this kind of method, which is passing a permission value..
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requestPermission(permission) {
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Diagnostic.requestRuntimePermission(permission).then(() => {
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console.log('permission granted');
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}, error => {
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console.error('permission error:', error);
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});
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}
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requestAllPermissions() {
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var permissions = Object.keys(this.PERMISSION).map(k => this.PERMISSION[k]);
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Diagnostic.requestRuntimePermissions(permissions).then(() => {
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console.log('permission granted');
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Diagnostic.requestRuntimePermission(permission).then((status) => {
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if (status == Diagnostic.permissionStatus.GRANTED) {
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alert('Permission granted!');
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} else {
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alert('Permission not granted. STATUS: ' + status);
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}
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}, error => {
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console.error('permission error:', error);
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});
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}
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funca() {
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// ..Or opt for Diagnostic's specific methods, like requestCameraAuthorization.
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requestCameraPermission() {
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// Checks if permission is already granted. Otherwise, asks for it.
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Diagnostic.isCameraAuthorized().then((authorized) => {
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if (authorized) {
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alert('camera is already authorized!');
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} else {
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Diagnostic.requestContactsAuthorization
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Diagnostic.requestContactsAuthorization().then((status) => {
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Diagnostic.requestCameraAuthorization().then((status) => {
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if (status == Diagnostic.permissionStatus.GRANTED) {
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alert('Permission granted!');
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} else {
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// Permissions not granted
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alert('Permission not granted. STATUS: ' + status);
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}
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});
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}
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});
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}
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// There is also a method that takes an array of permissions to ask for them at once
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requestAllPermissions() {
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var permissions = Object.keys(this.PERMISSION).map(k => this.PERMISSION[k]);
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Diagnostic.requestRuntimePermissions(permissions).then((status) => {
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alert(JSON.stringify(status));
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}, error => {
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console.error('permission error:', error);
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});
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}
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}

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