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README
Apache-2.0

ImageCropper_ohos

项目介绍

  • 项目名称:图片裁剪项目
  • 所属系列:鸿蒙的第三方组件适配移植
  • 功能:提供一个AbilitySlice界面,通过代码跳转。此界面包含了被裁减的图片以及一个裁剪框,此界面支持对一个正方形的图片进行裁剪,支持对正方形图片的旋转、水平翻转、垂直翻转等功能,支持返回到用户输入的包名加类名的Ability,支持返回一个裁剪后的PixelMap或是一个包含裁剪后图片信息的Component
  • 项目移植状态:完成
  • 调用差异:无
  • 开发版本:sdk5,DevEco Studio2.1 beta3
  • 项目作者和维护人:赵柏屹
  • 邮箱:isrc_hm@iscas.ac.cn
  • 社区文章地址:https://harmonyos.51cto.com/posts/3254
  • 原项目Doc地址:https://github.com/ArthurHub/Android-Image-Cropper

项目介绍

  • 编程语言:Java

安装教程

  1. 下载裁剪jar包cropper.jar。
  2. 启动 DevEco Studio,将下载的jar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标签中增加对libs目录下jar包的引用。
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
	……
}
  1. 在导入的jar包上点击右键,选择“Add as Library”对包进行引用,选择需要引用的模块,并点击“OK”即引用成功。
输入图片说明 输入图片说明

如无法运行,删除项目.gradle,.idea,build,gradle,build.gradle文件,

并依据自己的版本创建新项目,将新项目的对应文件复制到根目录下

使用说明

  1. 通过如下代码跳转到组件提供的AbilitySlice——CropImageAbility

    CropImage.activity()
                    .setContext(this)
                    .setSource(ResourceTable.Media_cat_square)
                    .setBundleName("com.huawei.mytestproject")
                    .setAbilityName("com.huawei.mytestproject.MainAbility")
                    .setRequset_code(1234)
                    .start(super.getAbility(),this);

    注:

    activity() 方法为初始化类。

    setContext() 方法需要传入一个上下文环境。

    setResource() 方法需要传入期待被裁减图片的id (目前只能使用在ResourceTable中注册过的图片,并且必须为正方形图片,图片位置如下所示)。

    输入图片说明 输入图片说明

    setBundleName() 与setAbilityName() 方法即为跳转到裁剪页面以后,想跳转回来的界面的包名以及类名 。如在MainAbilitySlice中写了这段代码并执行,就会跳转到组件自带的AbilitySlice,组件自带的界面也有一些按钮实现跳转回来的方法,所以需要设置想要跳转回来的Ability的名字。

    setRequest_code() 方法则为请求参数,如例子填写即可。

    start() 方法需要传入ability和context。

  2. 在组件提供的界面中进行裁剪图片翻转图片等操作

  3. 组件界面会根据setBundleName() 与setAbilityName()传入的包名和类名进行跳转。

    跳转回主页面时intent中默认塞入了两个参数cropFlag,cropStatus。cropFlag为布尔型变量,表示是否裁剪成功。cropStatus为int型变量,表示裁剪状态。0为默认值,表示还未进行页面跳转,1表示取消裁剪,2表示裁剪成功,intent中有数据。可以参考如下示例进行使用,或者自定义其他功能实现。

    if(intent.getIntParam("cropStatus",0) == 0){
        text.setText("欢迎使用");
    }else if(intent.getIntParam("cropStatus",0) == 1){
        text.setText("剪裁取消");
    }else if(intent.getIntParam("cropStatus",0) == 2){
        text.setText("剪裁成功");
    }
  4. 获得裁剪结果

    裁剪后组件提供了两个方法。

    方法一:

    CropImage.handleImage(int result_code ,Component image)

    参数 int result_code(可以从intent中获得,如下所示)

    int result_code = result.getIntParam("result_code" , 0);

    参数Component image 需要传入一个空的新new的Component。

    此方法会对component进行处理,塞入裁剪后的图片,以及图片旋转等等。

    方法二:

    PixelMap croppedPixelMap = CropImage.getCroppedPixelMap();

    此方法可以返回裁剪后的PixelMap,用户可以根据需要自行进行处理。

  5. MainAbilitySlice的具体使用可以参考如下代码:

    public class MainAbilitySlice extends AbilitySlice {
    
        //定义一个图片
        Component image;
        //定义一个文本
        Text text;
    
        @Override
        public void onStart(Intent intent) {
    
            //重写onstart方法并加载布局文件
            super.onStart(intent);
            super.setUIContent(ResourceTable.Layout_MainAbility_layout);
    
            //获取图片对象对应的component
            image = findComponentById(ResourceTable.Id_result_image);
    
            /*
             * 如果接收的cropFlag为true
             * 处理剪裁后的图片
             * 否则跳过
             */
            if(intent.getBooleanParam("cropFlag",false)){
                handleCrop(intent);
            }
    
            /* 自定义--获取文本对象对应的component
             * 根据intent里面的cropStatus来显示不同的文本
             * 0表示未接收到数据
             * 1表示剪裁取消
             * 2表示剪裁成功 有数据
             */
            text = (Text) findComponentById(ResourceTable.Id_text);
            if(intent.getIntParam("cropStatus",0) == 0){
                text.setText("欢迎使用");
            }else if(intent.getIntParam("cropStatus",0) == 1){
                text.setText("剪裁取消");
            }else if(intent.getIntParam("cropStatus",0) == 2){
                text.setText("剪裁成功");
            }
    
            //获取button对象对应的component
            Button button = (Button) findComponentById(ResourceTable.Id_button);
            // 设置button的属性及背景
            ShapeElement background = new ShapeElement();
            background.setRgbColor(new RgbColor(0, 125, 255));
            background.setCornerRadius(25);
            button.setBackground(background);
            if (button != null) {
                // 绑定点击事件
                button.setClickedListener(new Component.ClickedListener() {
                    public void onClick(Component v) {
                        begincrop();
                    }
                });
            }
        }
    
        public void begincrop(){
            CropImage.activity()
                    .setContext(this)
                    .setSource(ResourceTable.Media_cat_square)
                    .setBundleName("com.huawei.mytestproject")
                    .setAbilityName("com.huawei.mytestproject.MainAbility")
                    .setRequset_code(1234)
                    .start(super.getAbility(),this);
        }
    
        //处理剪裁结果
        private void handleCrop(Intent result) {
            int resultImg = result.getIntParam("resultImg",0);
            int result_code = result.getIntParam("result_code" , 0);
            if(resultImg != 0){
                CropImage.handleImage(result_code , image);
                //PixelMap croppedPixelMap = CropImage.getCroppedPixelMap();
            }
        }
    
        @Override
        public void onActive() {
            super.onActive();
        }
    
        @Override
        public void onForeground(Intent intent) {
            super.onForeground(intent);
        }
    }

版本迭代

  • v0.2.0-alpha 修复了由于module config文件问题导致的项目不可用

  • v0.1.0-alpha

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鸿蒙图片裁剪项目 展开 收起
Java
Apache-2.0
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