相册图片选取,拍照加图片剪辑

上传者: loveyaozu | 上传时间: 2019-12-21 20:13:03 | 文件大小: 1.52MB | 文件类型: zip
在IT领域,图片处理是一项非常重要的技术,尤其在移动设备上,用户经常需要对照片进行选取、拍照以及后期编辑。"相册图片选取,拍照加图片剪辑"这个主题涵盖了几大关键知识点,包括图像库访问、相机应用开发以及图片编辑工具的实现。 1. 图像库访问:在Android或iOS平台上,应用需要获取用户的相册权限来允许用户选择已有图片。Android使用`Intent`来打开系统相册,调用`ACTION_PICK`来让用户选择图片。iOS则通过`UIImagePickerController`来访问相册,提供用户选择图片的界面。开发者还需要考虑权限管理,确保在访问相册前已经获得了用户适当的权限。 2. 拍照功能:开发拍照功能涉及创建自定义相机界面或者集成系统相机服务。在Android中,可以通过`Camera`或`CameraX` API来控制相机硬件,而iOS则使用`UIImagePickerControllerSourceTypeCamera`来开启摄像头。开发者需要处理拍照过程中的参数设置,如分辨率、焦距、曝光等,并确保拍照结果符合预期。 3. 图片剪辑:图片剪辑功能包括裁剪、旋转、调整亮度和对比度等。Android提供了`Bitmap`类进行图像操作,可以配合`Matrix`进行旋转和缩放。iOS的`Core Image`框架提供了强大的图像处理能力,支持滤镜、变换等多种编辑操作。开发者可以使用这些API构建用户友好的图片编辑界面。 4. 图片质量与内存管理:在处理图片时,要考虑设备性能和内存限制。大尺寸图片可能会导致内存溢出,因此在加载图片时,通常会使用缩略图或按需加载策略。此外,处理后的图片应合理保存,可以选择JPEG或PNG格式,并根据需求调整压缩质量,以平衡图像质量和文件大小。 5. UI设计:为了提供良好的用户体验,图片选取和编辑界面应该直观易用。按钮布局、预览效果、反馈提示等都是设计时需要考虑的因素。同时,要遵循平台的UI/UX设计规范,确保应用与系统风格一致。 6. 数据安全:在处理用户照片时,应尊重用户隐私,确保数据安全。不建议在未经用户许可的情况下存储或分享他们的图片。 7. 兼容性测试:由于不同设备和系统版本可能存在差异,所以应用需要进行广泛的兼容性测试,确保在各种环境下都能正常运行。 8. 性能优化:对于大量图片的处理,可以采用异步处理、多线程技术,以提高用户体验,防止UI卡顿。 “相册图片选取,拍照加图片剪辑”涉及到的技术广泛,从基础的图像处理到高级的用户交互设计,都需要开发者具备扎实的技能和对用户体验的深刻理解。在实际开发中,不断优化和迭代是提升产品质量的关键。

文件下载

资源详情

[{"title":"( 78 个子文件 1.52MB ) 相册图片选取,拍照加图片剪辑","children":[{"title":"PhotoGraph","children":[{"title":".project <span style='color:#111;'> 813B </span>","children":null,"spread":false},{"title":"project.properties <span style='color:#111;'> 563B </span>","children":null,"spread":false},{"title":"src","children":[{"title":"com","children":[{"title":"syz","children":[{"title":"photograph","children":[{"title":"ImageUtils.java <span style='color:#111;'> 18.00KB </span>","children":null,"spread":false},{"title":"UriPathUtils.java <span style='color:#111;'> 1.50KB </span>","children":null,"spread":false},{"title":"PhotoUtil.java <span style='color:#111;'> 8.31KB </span>","children":null,"spread":false},{"title":"ActionSheetDialog.java <span style='color:#111;'> 6.22KB </span>","children":null,"spread":false},{"title":"MainActivity.java <span style='color:#111;'> 4.71KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true},{"title":"AndroidManifest.xml <span style='color:#111;'> 1.04KB </span>","children":null,"spread":false},{"title":"res","children":[{"title":"drawable-ldpi","children":null,"spread":false},{"title":"drawable-hdpi","children":[{"title":"actionsheet_middle_pressed.9.png <span style='color:#111;'> 187B </span>","children":null,"spread":false},{"title":"actionsheet_bottom_normal.9.png <span style='color:#111;'> 272B </span>","children":null,"spread":false},{"title":"ic_launcher.png <span style='color:#111;'> 598B </span>","children":null,"spread":false},{"title":"actionsheet_top_normal.9.png <span style='color:#111;'> 232B </span>","children":null,"spread":false},{"title":"actionsheet_bottom_pressed.9.png <span style='color:#111;'> 275B </span>","children":null,"spread":false},{"title":"actionsheet_middle_normal.9.png <span style='color:#111;'> 183B </span>","children":null,"spread":false},{"title":"actionsheet_top_pressed.9.png <span style='color:#111;'> 256B </span>","children":null,"spread":false},{"title":"actionsheet_single_pressed.9.png <span style='color:#111;'> 321B </span>","children":null,"spread":false},{"title":"actionsheet_single_normal.9.png <span style='color:#111;'> 318B </span>","children":null,"spread":false}],"spread":true},{"title":"values-v11","children":[{"title":"styles.xml <span style='color:#111;'> 324B </span>","children":null,"spread":false}],"spread":true},{"title":"drawable","children":[{"title":"actionsheet_bottom_selector.xml <span style='color:#111;'> 292B </span>","children":null,"spread":false},{"title":"actionsheet_single_selector.xml <span style='color:#111;'> 292B </span>","children":null,"spread":false},{"title":"actionsheet_middle_selector.xml <span style='color:#111;'> 292B </span>","children":null,"spread":false},{"title":"actionsheet_top_selector.xml <span style='color:#111;'> 286B </span>","children":null,"spread":false}],"spread":true},{"title":"drawable-mdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 433B </span>","children":null,"spread":false}],"spread":true},{"title":"layout","children":[{"title":"view_actionsheet.xml <span style='color:#111;'> 1.66KB </span>","children":null,"spread":false},{"title":"activity_main.xml <span style='color:#111;'> 1.40KB </span>","children":null,"spread":false}],"spread":true},{"title":"anim","children":[{"title":"actionsheet_dialog_in.xml <span style='color:#111;'> 199B </span>","children":null,"spread":false},{"title":"actionsheet_dialog_out.xml <span style='color:#111;'> 199B </span>","children":null,"spread":false}],"spread":true},{"title":"drawable-xxhdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 1.20KB </span>","children":null,"spread":false}],"spread":true},{"title":"drawable-xhdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 789B </span>","children":null,"spread":false}],"spread":false},{"title":"values","children":[{"title":"color.xml <span style='color:#111;'> 168B </span>","children":null,"spread":false},{"title":"strings.xml <span style='color:#111;'> 219B </span>","children":null,"spread":false},{"title":"styles.xml <span style='color:#111;'> 1.99KB </span>","children":null,"spread":false}],"spread":false},{"title":"values-v14","children":[{"title":"styles.xml <span style='color:#111;'> 381B </span>","children":null,"spread":false}],"spread":false}],"spread":false},{"title":"assets","children":null,"spread":false},{"title":"gen","children":[{"title":"com","children":[{"title":"syz","children":[{"title":"photograph","children":[{"title":"BuildConfig.java <span style='color:#111;'> 160B </span>","children":null,"spread":false},{"title":"R.java <span style='color:#111;'> 3.78KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true},{"title":"libs","children":[{"title":"android-support-v4.jar <span style='color:#111;'> 740.94KB </span>","children":null,"spread":false}],"spread":true},{"title":".classpath <span style='color:#111;'> 466B </span>","children":null,"spread":false},{"title":"proguard-project.txt <span style='color:#111;'> 781B </span>","children":null,"spread":false},{"title":"ic_launcher-web.png <span style='color:#111;'> 6.97KB </span>","children":null,"spread":false},{"title":"bin","children":[{"title":"resources.ap_ <span style='color:#111;'> 17.29KB </span>","children":null,"spread":false},{"title":"classes","children":[{"title":"com","children":[{"title":"syz","children":[{"title":"photograph","children":[{"title":"R$layout.class <span style='color:#111;'> 443B </span>","children":null,"spread":false},{"title":"R$style.class <span style='color:#111;'> 527B </span>","children":null,"spread":false},{"title":"ActionSheetDialog$OnSheetItemClickListener.class <span style='color:#111;'> 284B </span>","children":null,"spread":false},{"title":"ImageUtils.class <span style='color:#111;'> 12.86KB </span>","children":null,"spread":false},{"title":"PhotoUtil.class <span style='color:#111;'> 7.17KB </span>","children":null,"spread":false},{"title":"BuildConfig.class <span style='color:#111;'> 345B </span>","children":null,"spread":false},{"title":"R$drawable.class <span style='color:#111;'> 998B </span>","children":null,"spread":false},{"title":"R$attr.class <span style='color:#111;'> 340B </span>","children":null,"spread":false},{"title":"ActionSheetDialog$SheetItemColor.class <span style='color:#111;'> 1.56KB </span>","children":null,"spread":false},{"title":"ActionSheetDialog.class <span style='color:#111;'> 6.69KB </span>","children":null,"spread":false},{"title":"ActionSheetDialog$1.class <span style='color:#111;'> 958B </span>","children":null,"spread":false},{"title":"R$id.class <span style='color:#111;'> 672B </span>","children":null,"spread":false},{"title":"R$anim.class <span style='color:#111;'> 451B </span>","children":null,"spread":false},{"title":"MainActivity$2.class <span style='color:#111;'> 875B </span>","children":null,"spread":false},{"title":"R.class <span style='color:#111;'> 673B </span>","children":null,"spread":false},{"title":"R$string.class <span style='color:#111;'> 474B </span>","children":null,"spread":false},{"title":"MainActivity$1.class <span style='color:#111;'> 863B </span>","children":null,"spread":false},{"title":"ActionSheetDialog$SheetItem.class <span style='color:#111;'> 1.13KB </span>","children":null,"spread":false},{"title":"UriPathUtils.class <span style='color:#111;'> 1.78KB </span>","children":null,"spread":false},{"title":"MainActivity.class <span style='color:#111;'> 5.27KB </span>","children":null,"spread":false},{"title":"R$color.class <span style='color:#111;'> 443B </span>","children":null,"spread":false},{"title":"ActionSheetDialog$2.class <span style='color:#111;'> 1.23KB </span>","children":null,"spread":false}],"spread":false}],"spread":false}],"spread":false}],"spread":true},{"title":"AndroidManifest.xml <span style='color:#111;'> 1.04KB </span>","children":null,"spread":false},{"title":"dexedLibs","children":[{"title":"android-support-v4-34b3169f55aaa67cc988698d490efcc1.jar <span style='color:#111;'> 270.93KB </span>","children":null,"spread":false}],"spread":false},{"title":"res","children":[{"title":"crunch","children":[{"title":"drawable-hdpi","children":[{"title":"actionsheet_middle_pressed.9.png <span style='color:#111;'> 294B </span>","children":null,"spread":false},{"title":"actionsheet_bottom_normal.9.png <span style='color:#111;'> 403B </span>","children":null,"spread":false},{"title":"ic_launcher.png <span style='color:#111;'> 644B </span>","children":null,"spread":false},{"title":"actionsheet_top_normal.9.png <span style='color:#111;'> 379B </span>","children":null,"spread":false},{"title":"actionsheet_bottom_pressed.9.png <span style='color:#111;'> 400B </span>","children":null,"spread":false},{"title":"actionsheet_middle_normal.9.png <span style='color:#111;'> 292B </span>","children":null,"spread":false},{"title":"actionsheet_top_pressed.9.png <span style='color:#111;'> 406B </span>","children":null,"spread":false},{"title":"actionsheet_single_pressed.9.png <span style='color:#111;'> 500B </span>","children":null,"spread":false},{"title":"actionsheet_single_normal.9.png <span style='color:#111;'> 491B </span>","children":null,"spread":false}],"spread":false},{"title":"drawable-mdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 482B </span>","children":null,"spread":false}],"spread":false},{"title":"drawable-xxhdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 1.07KB </span>","children":null,"spread":false}],"spread":false},{"title":"drawable-xhdpi","children":[{"title":"ic_launcher.png <span style='color:#111;'> 767B </span>","children":null,"spread":false}],"spread":false}],"spread":false}],"spread":false},{"title":"classes.dex <span style='color:#111;'> 824.40KB </span>","children":null,"spread":false},{"title":"PhotoGraph.apk <span style='color:#111;'> 298.11KB </span>","children":null,"spread":false}],"spread":true}],"spread":false}],"spread":true}]

评论信息

  • sndtb :
    希望越大,失望越大
    2018-10-10
  • jxyushy :
    不错的资料
    2018-06-25
  • 该死的昨天 :
    希望越大,失望越大
    2018-05-21
  • applesgr :
    还不错,对初学者有用
    2018-04-17
  • Jianghao0804 :
    还没有看呢
    2018-02-05

免责申明

【只为小站】的资源来自网友分享,仅供学习研究,请务必在下载后24小时内给予删除,不得用于其他任何用途,否则后果自负。基于互联网的特殊性,【只为小站】 无法对用户传输的作品、信息、内容的权属或合法性、合规性、真实性、科学性、完整权、有效性等进行实质审查;无论 【只为小站】 经营者是否已进行审查,用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。
本站所有资源不代表本站的观点或立场,基于网友分享,根据中国法律《信息网络传播权保护条例》第二十二条之规定,若资源存在侵权或相关问题请联系本站客服人员,zhiweidada#qq.com,请把#换成@,本站将给予最大的支持与配合,做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明