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README
Apache-2.0

uCrop_ohos

本项目是基于开源项目uCrop进行鸿蒙化的移植和开发的,可以通过项目标签以及github地址( https://github.com/Yalantis/uCrop )追踪到原安卓项目版本,该项目已在社区发表文章可以通过( https://harmonyos.51cto.com/posts/3773 )查看相应资源。

项目介绍

  • 项目名称:开源图像裁剪软件
  • 所属系列:鸿蒙的第三方组件适配移植
  • 功能:支持各种格式图片的裁剪
  • 项目移植状态:基本功能实现
  • 调用差异:有(见使用教程)
  • 开发版本:sdk5,DevEco Studio2.1 beta3
  • 项目发起作者:吴圣垚
  • 邮箱:isrc_hm@iscas.ac.cn
  • 原项目Doc地址:https://github.com/Yalantis/uCrop 输入图片说明 输入图片说明 输入图片说明

项目介绍

  • 编程语言:Java
  • 外部库依赖:com.squareup.okhttp3:okhttp:3.12.1

安装教程

(若虚拟机无图库可能出现白屏,配置证书后在真机运行)

  1. 下载本组件har包uCrop.har。
  2. 启动 DevEco Studio,将下载的har包,导入工程目录“entry->libs”下。

输入图片说明

  1. 在moudle级别下的build.gradle文件中添加依赖,在dependences字段中增加对libs目录下har包的引用,并且添加okhttp的相关依赖,然后执行gradle sync。
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.har'])  
    implementation "com.squareup.okhttp3:okhttp:3.12.1"
	……
}

使用教程(可以参考本工程的entry模块)

  1. 选择待裁剪图片,获取其Uri
//网图URI
Uri uri_i = Uri.parse("https://gimg2.baidu.com/image_search/src=http%3A%2F%2F2e.zol-img.com.cn%2Fproduct%2F56%2F456%2Fce88hkGbFnV8Y.jpg&refer=http%3A%2F%2F2e.zol-img.com.cn&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1617791968&t=8e9676cb3c0536d46830d1090ad970f4");
  1. 创建本地Uri,用于存储待裁剪的图片
//本地URI
String filename = "test.jpg";
PixelMap.InitializationOptions options = new PixelMap.InitializationOptions();
options.size = new Size(100,100);
PixelMap pixelmap = PixelMap.create(options);
Uri uri_o = saveImage(filename, pixelmap);

关于saveImage的写法,可以参考entry模块中的代码。

  1. 使用两个Uri初始化UcropView,这样图片就会被加载到UcropView中。UcropView已经原生支持手势对其进行平移、缩放和旋转。
UcropView uCropView = new UCropView(this);
try {
     uCropView.getCropImageView().setImageUri(uri_i, uri_o);
     uCropView.getOverlayView().setShowCropFrame(true);
     uCropView.getOverlayView().setShowCropGrid(true);
     uCropView.getOverlayView().setDimmedColor(Color.BLACK.getValue());
} catch (Exception e) {
     e.printStackTrace();
}
  1. 添加裁剪按钮,点击按钮后即可裁剪并保存图片。

    //裁剪Button
    Button button = new Button(this);
    button.setText("裁剪");
    button.setTextSize(100);
    button.setClickedListener(new Component.ClickedListener() {
          @Override
          public void onClick(Component component) {
              cropAndSaveImage();
              component.setVisibility(Component.INVISIBLE);
          }
    });
    
    protected void cropAndSaveImage() {
        mGestureCropImageView = uCropView.getCropImageView();
        mGestureCropImageView.cropAndSaveImage("image/jpg", 90, null);
    }
  2. Run!可以使用手势对图片进行调整和裁剪。裁剪好的图片会保存在相册里。不必担心裁剪框超出图像带来的一系列问题,本组件会自动适配它们。

  3. (可选)使用封装好的接口对图片执行缩放、平移、旋转和裁剪。可以将它们放在按钮、滚动条中实现对应的效果。

//缩放
uCropView.getCropImageView().postScale(factor,center_X,center_Y);
//平移
uCropView.getCropImageView().postTranslate(distance_X, distance_Y);
//旋转
uCropView.getCropImageView().postRotate(degrees,center_X,center_Y);

版本迭代

  • v0.1.0-alpha

    实现了组件的基本功能

    尚不支持使用手势对图像进行旋转操作

    尚不支持动画效果

  • v0.2.0-alpha

    修复了旋转后裁剪会出现【裁剪预览】与【实际裁剪后的图片】不一致的问题

    现已支持使用手势对图像进行旋转操作

  • v0.3.0-alpha

    添加了读取本地文件的能力

    在sample中添加了读取本地相册的代码

已知的问题:

1.缩放listener在滑动操作后触发不灵敏
2.裁剪框无法设置为半透明色

版权和许可信息

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简介

uCrop是目前较火的图片裁剪框架,具有封装程度高、使用流畅、自定义自由度高的优点。目前已经有许多安卓APP选用它作为图像裁剪的模块。本组件是uCrop的鸿蒙化版本,继承了其大部分优点。 展开 收起
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