鸿蒙开源三方组件(longimagecamera)--长图像拍摄器原创精华

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发布于 2021-7-28 09:56

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1.介绍

LongImageCamera是通过相机视图，获取多个小图像来拼接成长图像的开源工具库。

该项目基于安卓平台的组件（https://github.com/wajahatkarim3/LongImageCamera ）进行迁移和开发

2.效果展示

鸿蒙开源三方组件(longimagecamera)--长图像拍摄器-鸿蒙开发者社区

3.依赖

方法1：

（1）. 下载源码并build longimagecamera_lib.har
（2）. 在你的entry文件夹下的build.gradle按如下方式加载

dependencies {
    implementation project(":longimagecamera_lib")
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
    testImplementation 'junit:junit:4.13'
    ohosTestImplementation 'com.huawei.ohos.testkit:runner:1.0.0.100'
}

方法2：

（1）. 在工程的build.gradle的allprojects中，添加HAR所在的Maven仓地址

repositories {
    maven {
        url 'https://s01.oss.sonatype.org/content/repositories/releases/' 
    }
}

（2）. 在应用模块的build.gradle的dependencies闭包中，添加如下代码:

dependencies {
    implementation 'io.github.dzsf:longimagecamera:1.0.1'
}

3 功能特性

（1）.支持自动聚焦

public void setAutoFocus(boolean autoFocus){
    if (mAutoFocus == autoFocus) {
        return;
    }
    mAutoFocus = autoFocus;
    if (mPreviewRequestBuilder != null) {
        updateAutoFocus();
        if (cameraDevice != null) {
            try {
                cameraDevice.stopLoopingCapture();
                cameraDevice.triggerLoopingCapture(mPreviewRequestBuilder.build());
            } catch (IllegalStateException e) {
                mAutoFocus = !mAutoFocus;
            }
        }
    }
}

（2）.支持闪光灯切换

public void setFlash(int flash){
    if (mFlash == flash) {
        return;
    }
    int saved = mFlash;
    mFlash = flash;
    if (mPreviewRequestBuilder != null) {
        updateFlash();
        if (cameraDevice != null) {
            try {
                cameraDevice.stopLoopingCapture();
                    cameraDevice.triggerLoopingCapture(mPreviewRequestBuilder.build());
            } catch (IllegalStateException e) {
               mFlash = saved; // Revert
            }
        }
    }
}

（3）.支持最多5张图像拼接

private void prepareImageReader() {
        Size largest = mPreviewSizes.sizes(mAspectRatio).last();
        mImageReader = ImageReceiver.create(largest.getWidth(), largest.getHeight(),
                ImageFormat.JPEG, /* maxImages */ MAX_IMAGE);
        mImageReader.setImageArrivalListener(mOnImageAvailableListener);
    }

（4）.支持长图像放大、缩小、拖拽，滑动浏览