import { Injectable } from '@angular/core';
import { Component } from '@angular/core';
import { App, ViewController, NavOptions, NavParams, ActionSheetController,ToastController } from 'ionic-angular';
import { File, DirectoryEntry } from '@ionic-native/file';
import { AndroidPermissions } from '@ionic-native/android-permissions';
import { FileTransfer } from '@ionic-native/file-transfer';
import { PhotoLibrary } from '@ionic-native/photo-library';
import { LinkPhpService } from '../../services/linkphp.service';
import { SelectArtService } from '../../services/selectArt.service';
@Injectable()
export class BigImageController {
constructor(private app: App) {
}
/**
* 开启大图
* @param
*/
open(src:Array<string>) {
let vc = new BigImageViewController(this.app, src);
vc.present();
}
}
/**
* 控制器
*/
class BigImageViewController extends ViewController {
private _app: App;
/**
* 全屏遮罩控制器
* @param app
*/
constructor(app: App, srcArr: Array<string>) {
super(BigImageComponent, { srcArr: srcArr }, "big-image-comp");
this._app = app;
this.isOverlay = true;
}
/**
* 显示
* @param navOptions
*/
present(navOptions: NavOptions = {}) {
return this._app.present(this, navOptions);
}
}
@Component({
selector: 'big-image-comp',
template: `
<div class="big_image_comp_div">
<div class="big_image_comp_img" style="background:#000;" (tap)="close()">
<ion-slides pager>
<ion-slide *ngFor="let src of srcArr" (press)="saveImage(src)">
<detailed-image-comp [src]="src"></detailed-image-comp>
</ion-slide>
</ion-slides>
</div>
</div>`
})
export class BigImageComponent {
private srcArr: Array<string>;
private StoragePath: DirectoryEntry;
constructor(
private vc: ViewController,
private navparams: NavParams,
private actionSheetCtrl: ActionSheetController,
private ap: AndroidPermissions,
private fileNative: File,
private fileTransfer: FileTransfer,
private photoLibrary: PhotoLibrary,
private tcdSer: SelectArtService,
public linkphpurl: LinkPhpService,
private tc:ToastController
) {
if (this.navparams && this.navparams['data']) {
this.srcArr = this.navparams['data']['srcArr'];
}
}
/**
* 保存图片
*/
saveImage(src: string) {
let actionSheet = this.actionSheetCtrl.create({
buttons: [
{
text: '保存图片',
role: 'destructive',
handler: () => {
this.downImage(src).then((res) => {
this.tc.create({message:'保存成功！',duration:2000}).present();
console.log(res);
}).catch(e => {
console.log(e);
this.tc.create({message:'保存失败，请稍后重试！',duration:2000}).present();
});
}
}, {
text: '取消',
role: 'cancel'
}
]
});
actionSheet.present();
}
/**
* 关闭大图
*/
close() {
this.vc.dismiss();
}
/**
* 下载图片
*/
private downImage(url: string): Promise<any> {
return this.requestPermission().then(() => {
return this.createOrFindDir();
}).then(() => {
this.tcdSer.getimage(url).then(data => {
let type = data['type'];
let rq = data['rq'];
let fileYuanName = url;
let filename = url;
let srcUrl = this.linkphpurl.linkPhpUrl + "DiQiuCunWangXin-PHP/common/php/fileDownload.php?type=" + type + "&rq=" + rq + "&fileName=" + fileYuanName + "&name=" + filename;
this.photoLibrary.saveImage(srcUrl, 'images').then((res) => {
console.log(res);
}).catch(e => {
console.log(e);
});
})
}).catch((e) => {
console.log("downloadFiles throws error: ", e);
return Promise.reject(e);
});
}
/**
* 创建或找到素材存储路径。（若没有，则创建，若有，则直接返回）
*/
private createOrFindDir(): Promise<void> {
return this.fileNative.checkDir(this.fileNative.externalDataDirectory, 'images').then((pathExists) => {
if (pathExists) {
return this.fileNative.resolveDirectoryUrl(this.fileNative.externalDataDirectory + 'images');
} else {
return Promise.reject(false);
}
}).catch((e) => {
return this.fileNative.createDir(this.fileNative.externalDataDirectory, 'images', false);
}).then((rootPath: DirectoryEntry) => {
return this.fileNative.getDirectory(rootPath, 'images', null);
}).catch((e) => {
return this.fileNative.resolveDirectoryUrl(this.fileNative.externalDataDirectory + 'images');
}).then((path: DirectoryEntry) => {
this.StoragePath = path;
return Promise.resolve();
}).catch((e) => {
console.log(e);
});
}
/**
* 获取权限
*/
private requestPermission(): Promise<void> {
return this.ap.checkPermission(this.ap.PERMISSION.READ_EXTERNAL_STORAGE).then((result) => {
if (!result.hasPermission) {
return this.ap.requestPermission(this.ap.PERMISSION.READ_EXTERNAL_STORAGE);
} else {
return Promise.resolve({ hasPermission: true });
}
}).catch((result) => {
return this.ap.requestPermission(this.ap.PERMISSION.READ_EXTERNAL_STORAGE);
}).then((result) => {
if (!result.hasPermission) {
return Promise.reject("没有获得设备权限。");
} else {
return this.ap.checkPermission(this.ap.PERMISSION.WRITE_EXTERNAL_STORAGE);
}
}).then((result) => {
if (!result.hasPermission) {
return this.ap.requestPermission(this.ap.PERMISSION.WRITE_EXTERNAL_STORAGE);
} else {
return Promise.resolve({ hasPermission: true });
}
}).catch((result) => {
return this.ap.requestPermission(this.ap.PERMISSION.WRITE_EXTERNAL_STORAGE);
}).then((result) => {
if (!result.hasPermission) {
return Promise.reject("没有获得设备权限。");
} else {
return Promise.resolve();
}
}).catch((e) => {
return Promise.reject(e);
});
}
}