package com.konstant.tool.lite.util
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.graphics.Bitmap
import android.graphics.Color
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.os.Environment
import android.provider.MediaStore
import android.support.v4.content.FileProvider
import android.view.View
import android.view.WindowManager
import com.konstant.tool.lite.module.setting.SettingManager
import java.io.File
/**
* 时间：2019/5/22 10:49
* 创建：菜籽
* 描述：封装的图片选择器，包含从系统图库获取图片以及从相机获取图片
* 本选择器支持安卓4.0以上版本，同时针对安卓8.0的新特性做了适配工作
* 本质上是启动了一个完全透明的activity，在内部对startActivityForResult进行了封装处理
*
* 接口如下：
* 通过伴生接口，提供给外部的接口有三个：
* 1、fun selectImg(context: Context, name: String, callback: (result: Boolean) -> Unit)
* 2、fun takePhoto(context: Context, name: String, callback: (result: Boolean) -> Unit)
* 3、fun clipPhoto(context: Context, name: String, callback: (result: Boolean) -> Unit)
* 获取的图片一律存放在/storage/emulated/0/Android/包名/files/Pictures 下
* 当接口回调为true时，表示图片已处理完毕，调用者可根据传过来的文件名字获取图片
* 当接口回调false时，基本上用户手动取消了操作，调用者可根据此结果做响应处理
*/
class ImageSelector : Activity() {
companion object {
private val CAMERA_REQUEST = 1 // 拍照
private val PHOTO_REQUEST = 2 // 相册
private val PHOTO_CLIP = 3 // 裁剪
private lateinit var mFileName: String
lateinit var mCallback: ((result: Boolean) -> Unit)
// 从相册选择图片，提供给外部的接口
fun selectImg(context: Context, name: String, callback: (result: Boolean) -> Unit) {
mCallback = callback
mFileName = name
with(Intent(context, ImageSelector::class.java)) {
putExtra("type", PHOTO_REQUEST)
flags = Intent.FLAG_ACTIVITY_NEW_TASK
context.startActivity(this)
}
}
// 调用摄像机拍摄图片，提供给外部的接口
fun takePhoto(context: Context, name: String, callback: (result: Boolean) -> Unit) {
mCallback = callback
mFileName = name
with(Intent(context, ImageSelector::class.java)) {
putExtra("type", CAMERA_REQUEST)
flags = Intent.FLAG_ACTIVITY_NEW_TASK
context.startActivity(this)
}
}
// 单独的调用系统裁剪图片的接口，这个接口一般很少单独使用，提供给外部的接口
fun clipPhoto(context: Context, name: String, callback: (result: Boolean) -> Unit) {
mCallback = callback
mFileName = name
with(Intent(context, ImageSelector::class.java)) {
putExtra("type", PHOTO_CLIP)
flags = Intent.FLAG_ACTIVITY_NEW_TASK
context.startActivity(this)
}
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
invasionStatusBar(this)
val type = intent.getIntExtra("type", 0)
when (type) {
CAMERA_REQUEST -> {
val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
val uri = FileUtil.getPictureUri(this, mFileName)
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri)
startActivityForResult(intent, CAMERA_REQUEST)
}
PHOTO_REQUEST -> {
with(Intent(Intent.ACTION_PICK)) {
setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*")
startActivityForResult(this, PHOTO_REQUEST)
}
}
PHOTO_CLIP -> {
val uri = FileUtil.getPictureUri(this, mFileName)
clipPhoto(uri)
}
}
}
// 本activity调用系统的API获取数据后得到的结果，并对结果进行处理
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
if (resultCode != RESULT_OK) {
mCallback.invoke(false)
finish()
}
when (requestCode) {
CAMERA_REQUEST -> {
val file = File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), mFileName)
if (!file.exists()) {
mCallback.invoke(false)
return
}
val uri = FileUtil.getPictureUri(this, mFileName)
clipPhoto(uri)
}
PHOTO_REQUEST -> {
data?.let { clipPhoto(it.data) }
}
PHOTO_CLIP -> {
mCallback.invoke(true)
finish()
}
else -> {
mCallback.invoke(false)
finish()
}
}
}
// 调用系统中自带的图片剪裁
private fun clipPhoto(uri: Uri) {
val cropPhoto = File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), mFileName)
with(Intent("com.android.camera.action.CROP")) {
setDataAndType(uri, "image/*")
addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
// 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪
putExtra("crop", "true")
putExtra("scale", true)
putExtra("aspectX", 1)
putExtra("aspectY", 1)
//输出的宽高
putExtra("outputX", 300)
putExtra("outputY", 300)
putExtra("return-data", false)
putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(cropPhoto))
putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString())
putExtra("noFaceDetection", true) // no face detection
startActivityForResult(this, PHOTO_CLIP)
}
}
// 隐藏系统的状态栏 以及 任务栏
private fun invasionStatusBar(activity: Activity) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
val window = activity.window
val decorView = window.decorView
decorView.systemUiVisibility = (decorView.systemUiVisibility
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
or View.SYSTEM_UI_FLAG_LAYOUT_STABLE)
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
window.statusBarColor = Color.TRANSPARENT
}
}
}
activity的主题配置：
<!--透明主题-->
<style name="TransparentTheme" parent="@android:style/Theme.Translucent.NoTitleBar">
<item name="android:windowActionBar">false</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowBackground">@color/color_transport</item>
<item name="android:windowDisablePreview">true</item>
</style>
安卓8.0及以上，需要再清单文件中加入：
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
这是文件path配置：
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path
name="header_big.jpg"
path="images/"/>
<external-cache-path
name="header_big.jpg"
path="."/>
<external-path
name="header_big.jpg"
path="."/>
</paths>
