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张小德/MXImagePicker

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README
Apache-2.0

ImagePicker

介绍

基于Kotlin,AndroidX的仿微信图片选择器

Gradle引用

    implementation 'com.gitee.zhangmengxiong:MXImagePicker:1.6.7'

Image text Image text Image text

使用方法

第一步:项目增加Androidx库和Glide图片加载库、图片缩放库

    implementation "androidx.appcompat:appcompat:x.x.x"
    implementation "androidx.recyclerview:recyclerview:x.x.x"
    implementation "com.github.bumptech.glide:glide:x.x.x"
    implementation "androidx.constraintlayout:constraintlayout:2.0.4"
    implementation "com.github.chrisbanes:PhotoView:2.3.0"

第二步:使用前需要修改‘AndroidManifest.xml’配置:添加相册、存储权限

    // 如果 Android版本 < 33 需要以下权限:
Manifest.permission.CAMERA
Manifest.permission.READ_EXTERNAL_STORAGE
// 如果 Android版本 >= 33 需要以下权限:
Manifest.permission.CAMERA
Manifest.permission.READ_MEDIA_IMAGES
Manifest.permission.READ_MEDIA_VIDEO

// targetSdkVersion >= 29 的应用需要在application节点添加以下属性
android:requestLegacyExternalStorage = "true"

注意:没有权限进入选择页面会报错!

第三步:启动选择页面

val intent = MXPickerBuilder().setMaxSize(3).createIntent(this)
startActivityForResult(intent, 0x22)
预加载说明

预加载可以提前搜索本机图片/视频资源,减少首次进入选择页面时空白时间

MXImagePicker.init(application)
lifecycleScope.launch{ MXImagePicker.preScan(this@MainActivity) }
MXPickerBuilder参数说明
  1. setMaxSize(size: Int) 设置最大选择文件个数
  2. setType(type: PickerType) 设置类型
    • PickerType.Image = 图片
    • PickerType.Video = 视频
    • PickerType.ImageAndVideo = 图片 + 视频 混合选择
  3. setCameraEnable(enable: Boolean) 设置是否启动拍摄功能,默认=true
  4. setMaxVideoLength(length: Int) 当类型=Video时,可以选择视频最大时长限制,单位:秒 默认=-1 无限制
  5. setMaxListSize(size: Int) 最长列表加载长度,防止图片过多时产生OOM -1=不限制 默认限制长度=1000条
// 在图片选择器Activity创建时会回调这个方法,一般会通过这个来改变导航栏、状态栏的Theme,demo中搭配`ImmersionBar`来实现沉浸式效果
MXImagePicker.registerActivityCallback { activity ->
   ImmersionBar.with(activity)
      .autoDarkModeEnable(true)
      .statusBarColorInt(activity.resources.getColor(R.color.picker_color_background))
      .fitsSystemWindows(true)
      .navigationBarColor(R.color.picker_color_background)
      .init()
}
页面颜色设置

将下面颜色值放如主项目的资源xml中,可以修改页面对应的颜色显示

    <!--  页面背景色  -->
<color name="mx_picker_color_background">#333333</color>

        <!--  字体、icon颜色  -->
<color name="mx_picker_color_important">#F1F1F1</color>

        <!--  选中状态颜色  -->
<color name="mx_picker_color_select">#03CE65</color>
多语言设置

将下面字符串定义放入对应的语言目录中,可以修改页面对应的文字提示

   <string name="mx_picker_string_select">选择</string>
<string name="mx_picker_string_all">全部</string>
<string name="mx_picker_string_image_limit_tip">您最多只能选择 %s 张图片!</string>
<string name="mx_picker_string_video_limit_tip">您最多只能选择 %s 个视频!</string>
<string name="mx_picker_string_video_limit_length_tip">只能选择 %s 秒以内的视频</string>
<string name="mx_picker_string_need_permission_storage_camera">需要写入存储、相机权限</string>
<string name="mx_picker_string_need_permission_storage">需要读取存储权限</string>
<string name="mx_picker_string_open_failed">打开失败!</string>
<string name="mx_picker_string_preview">预览</string>
<string name="mx_picker_string_not_compress">原图</string>
<string name="mx_picker_string_take_pic">拍摄图片</string>
<string name="mx_picker_string_take_video">拍摄视频</string>
<string name="mx_picker_string_show_list">图片查看</string>

dimens.xml 资源

    <!--  顶部导航栏高度  -->
<dimen name="mx_picker_bar_height">50dp</dimen>
自定义图片加载器(默认使用Glide)

通过继承实现接口IImageLoader ,并注册到服务MXImagePicker即可

// 数据对象
data class MXItem(val path: String, val time: Long, val type: MXPickerType, val duration: Int = 0)

// 全局注册加载器,可以卸载Application里面,不影响启动速度
MXImagePicker.registerImageLoader { activity, item, imageView ->
   if (File(item.path).exists()) {
      Glide.with(activity).load(File(item.path))
         .placeholder(R.drawable.mx_icon_picker_image_place_holder).into(imageView)
   } else if (item.path.startsWith("http")) {
      Glide.with(activity).load(item.path)
         .placeholder(R.drawable.mx_icon_picker_image_place_holder).into(imageView)
   } else {
      Glide.with(activity).load(item.uri)
         .placeholder(R.drawable.mx_icon_picker_image_place_holder).into(imageView)
   }
}

第四步:获取返回结果

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
   super.onActivityResult(requestCode, resultCode, data)
   if (resultCode == RESULT_OK && requestCode == 0x22) {
      val paths = MXPickerBuilder.getPickerResult(data) ?: return //返回List<String>类型数据
      println(paths)
   }
}

调取摄像头单独拍摄照片

val builder = MXCaptureBuilder().setType(MXPickerType.Image)

startActivityForResult(builder.createIntent(this), 0x11)

// 在onActivityResult获取结果
val file = builder.getCaptureFile()

调取摄像头单独拍摄视频

val builder = MXCaptureBuilder().setType(MXPickerType.Video).setMaxVideoLength(10)
startActivityForResult(builder.createIntent(this), 0x11)

// 在onActivityResult获取结果
val file = builder.getCaptureFile()

图片查看器

Image text

MXImgShowActivity.open(
   this, arrayListOf(
      "http://videos.jzvd.org/v/饺子主动.jpg",
      "http://videos.jzvd.org/v/饺子运动.jpg"
   ), "图片详情"
)

单张图片压缩

val file = File(".../xx.png")
val scaleImg = MXImageCompress.from(context)
   .setCacheDir(applicationContext.cacheDir) // 缓存目录
   .setSupportAlpha(true) // 支持透明通道(’.png‘格式) 默认=’.jpg‘格式
   .setTargetFileSize(50) // 设置压缩文件大小目标值 单位:Kb 默认=0 自然压缩
   .setTargetPixel(2400) // 设置压缩文件宽或高目标值 单位:像素
   .compress(file)
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简介

🔥基于Kotlin,AndroidX的仿微信图片选择器 展开 收起
Android 等 2 种语言
Apache-2.0
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