前言:
自从从手机应用转到RK安卓主板开发以后,发现有些手机上通用的东西在定制的主板上无法使用,比如:自定义相机录像功能
权限:
<!-- 增加文件存储和访问摄像头的权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
第一步:在布局中:
自定义相机的主要方法,也可以封装到一起,下一节再讲!
下一步:使用
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import android.app.Activity
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import android.content.Intent
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import android.hardware.Camera
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import android.os.Bundle
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import android.util.Log
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import android.view.SurfaceHolder
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import android.view.SurfaceView
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import app.SpeechApp
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import com.airiche.httplibrary.http.Rk.MediaTecorderManger
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import com.sunchip.vendingmachine.R
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import kotlinx.android.synthetic.main.activity_open_shopping.*
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import java.io.IOException
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class TestActivity : Activity(), SurfaceHolder.Callback {
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private
var mCamera
//声明相机（不要倒错包）
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: Camera? =
null
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private
var mPrevice
//声明视图
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: SurfaceView? =
null
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private
var mHolder
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: SurfaceHolder? =
null
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override
fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_open_shopping)
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initView()
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}
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private
fun initView() {
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mPrevice = findViewById(R.id.preview);
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mHolder = mPrevice!!.getHolder();
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mHolder!!.addCallback(
this);
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}
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// 相机和Activity的生命周期进行绑定
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override
fun onResume() {
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super.onResume()
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StartCamer()
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}
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//相机的启动
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private
fun StartCamer() {
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if (mCamera ==
null) {
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mCamera = getCamera()
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if (mHolder !=
null) {
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setStartPrevicw(mCamera!!, mHolder!!)
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}
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}
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//直接开始录像
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var name = System.currentTimeMillis().toString()+
".mp4"
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MediaTecorderManger.instance!!.prepareVideoRecorder(mCamera!!,
"/sdcard/", name)
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}
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//相机的启动和Activity的生命周期进行绑定
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override
fun onPause() {
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super.onPause()
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//同时停止录像
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MediaTecorderManger.instance!!.StopMediaRecorder(
this)
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releaseCamera()
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}
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/**
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* 打开摄像头
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*
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* @return
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*/
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fun getCamera(): Camera? {
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var camera: Camera? =
null
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if (camera !=
null) {
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camera.stopPreview()
//停掉原来摄像头的预览
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camera.release()
//释放资源
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}
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// Camera.getNumberOfCameras()可访问的摄像机设备总数，如果没有摄像头，则为0。
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val cametacount = Camera.getNumberOfCameras()
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camera = Camera.
open(cametacount -
1)
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return camera
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}
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/**
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* 开始预览相机内容
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*/
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private
fun setStartPrevicw(
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camera: Camera,
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holder: SurfaceHolder
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) {
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try {
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val rotation =
this.windowManager.defaultDisplay.rotation
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Log.e(
"TAG",
"rotation=============$rotation")
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camera.setPreviewDisplay(holder)
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//系统预览角度的调整
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camera.setDisplayOrientation(
0)
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//打开摄像头
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camera.startPreview()
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}
catch (e: IOException) {
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Log.e(
"TAG",
"IOException==setStartPrevicw==e:" + e.message)
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//释放摄像头
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releaseCamera()
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}
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}
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/**
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* 释放相机资源
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*/
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private
fun releaseCamera() {
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if (mCamera !=
null) {
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mCamera!!.lock()
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mCamera!!.stopPreview()
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mCamera!!.setPreviewCallback(
null)
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mCamera!!.setPreviewCallbackWithBuffer(
null)
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mCamera!!.release()
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mCamera =
null
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}
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}
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override
fun surfaceChanged(holder: SurfaceHolder, format: Int, width: Int, height: Int) {
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mCamera!!.stopPreview();
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setStartPrevicw(mCamera!!, mHolder!!);
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Log.e(
"TAG",
"surfaceChanged=============");
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}
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override
fun surfaceDestroyed(holder: SurfaceHolder) {
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releaseCamera();
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}
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override
fun surfaceCreated(holder: SurfaceHolder) {
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setStartPrevicw(mCamera!!, mHolder!!);
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}
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companion
object {
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fun getTestActivity() {
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val intent = Intent(SpeechApp.mSpeechApp, TestActivity::
class.java)
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intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
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SpeechApp.mSpeechApp!!.startActivity(intent)
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}
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}
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}
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介绍:如果你们单独使用这个类是会有问题的:比如,
SpeechApp.mSpeechApp :这个是公共的ApplicationMediaTecorderManger.instance!!.prepareVideoRecorder(mCamera!!, AppConfig.path, name) 这个就是封装的录像代码MediaTecorderManger.instance!!.StopMediaRecorder(this) 这个就是停止录像方法
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package com.airiche.httplibrary.http.Rk
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import android.content.Context
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import android.hardware.Camera
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import android.media.CamcorderProfile
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import android.media.MediaRecorder
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import android.util.Log
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import android.widget.Toast
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import com.airiche.httplibrary.http.manager.FileManger
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import com.airiche.httplibrary.http.utils.FileSizeUtil
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import com.airiche.httplibrary.http.utils.FileUtils
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import com.airiche.httplibrary.http.utils.HttpURLUtils
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import com.airiche.httplibrary.http.utils.SingletonUtils
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import java.io.IOException
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/**
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*
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* 录像 仅仅在Rk系统上使用 这是定制系统 google原生录像跑不起来
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* MediaRecorder的一些参数有些系统不支持
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*/
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class MediaTecorderManger {
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private
var mVideoFilename =
""
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//摄像机
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private
var mMediaRecorder: MediaRecorder? =
null
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var fileManger = FileManger()
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var mProfile: CamcorderProfile? =
null
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//开始录像
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fun prepareVideoRecorder(mCamera: Camera?, Path: String, name: String):
Boolean {
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Log.v(TAG,
"开始录制视频========")
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FileSizeUtil.ConfirmFile(Path)
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mVideoFilename = Path + name
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fileManger.updateStorageSpaceAndHint(FileManger.OnStorageUpdateDoneListener {
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initializeRecorder(mCamera)
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if (mMediaRecorder ==
null) {
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Log.e(
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TAG,
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"Fail to initialize media recorder"
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)
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return
@OnStorageUpdateDoneListener
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}
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try {
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mMediaRecorder!!.start()
// Recording is now started
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}
catch (e: RuntimeException) {
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Log.e(TAG,
"Could not start media recorder. " + e)
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releaseMediaRecorder()
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mCamera!!.lock()
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return
@OnStorageUpdateDoneListener
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}
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})
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return
true
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}
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//初始化录像参数
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fun initializeRecorder(mCamera: Camera?) {
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mProfile = CamcorderProfile.
get(
0, CamcorderProfile.QUALITY_HIGH)
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mMediaRecorder = MediaRecorder()
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mCamera!!.unlock()
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mMediaRecorder!!.setCamera(mCamera)
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mMediaRecorder!!.setAudioSource(MediaRecorder.AudioSource.CAMCORDER)
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mMediaRecorder!!.setVideoSource(MediaRecorder.VideoSource.CAMERA)
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mMediaRecorder!!.setProfile(mProfile)
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mMediaRecorder!!.setVideoSize(
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mProfile!!.videoFrameWidth,
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mProfile!!.videoFrameHeight
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)
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mMediaRecorder!!.setMaxDuration(
5 *
60 *
1000)
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mMediaRecorder!!.setOutputFile(mVideoFilename)
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var maxFileSize:
Long =
1024 *
1024 *
1024.toLong()
//最大一个G
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try {
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mMediaRecorder!!.setMaxFileSize(maxFileSize)
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}
catch (exception: java.lang.RuntimeException) {
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// We are going to ignore failure of setMaxFileSize here, as
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// a) The composer selected may simply not support it, or
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// b) The underlying media framework may not handle 64-bit range
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// on the size restriction.
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}
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mMediaRecorder!!.setOrientationHint(
0)
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try {
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mMediaRecorder!!.prepare()
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}
catch (e: IOException) {
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Log.e(TAG,
"prepare failed for $mVideoFilename" + e)
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releaseMediaRecorder()
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throw RuntimeException(e)
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}
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mMediaRecorder!!.setOnErrorListener(
object : MediaRecorder.OnErrorListener {
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override
fun onError(mr: MediaRecorder?, what: Int, extra: Int) {
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mMediaRecorder!!.setOnErrorListener(
null)
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mMediaRecorder!!.setOnInfoListener(
null)
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mMediaRecorder!!.stop()
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}
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})
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mMediaRecorder!!.setOnInfoListener(
object : MediaRecorder.OnInfoListener {
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override
fun onInfo(mr: MediaRecorder?, what: Int, extra: Int) {
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}
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})
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}
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fun releaseMediaRecorder() {
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Log.i(TAG,
"Releasing media recorder.")
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if (mMediaRecorder !=
null) {
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mMediaRecorder!!.reset()
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mMediaRecorder!!.release()
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mMediaRecorder =
null
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}
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mVideoFilename =
""
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}
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fun StopMediaRecorder(mContext: Context) {
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mMediaRecorder!!.setOnErrorListener(
null)
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mMediaRecorder!!.setOnInfoListener(
null)
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mMediaRecorder!!.setPreviewDisplay(
null)
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try {
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mMediaRecorder!!.stop()
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}
catch (e: RuntimeException) {
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Toast.makeText(mContext,
"录制时间太短！", Toast.LENGTH_SHORT).show()
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}
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//重置和释放 mediaRecorder
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mMediaRecorder!!.reset()
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mMediaRecorder!!.release()
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mMediaRecorder =
null
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Log.v(TAG,
"停止录制，文件已保存====" + mVideoFilename)
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}
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companion
object {
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var TAG =
"MediaTecorderManger"
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private
val mMediaTecorderManger: SingletonUtils<MediaTecorderManger?,
Void?> =
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object : SingletonUtils<MediaTecorderManger?,
Void?>() {
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override
fun create(var1: Void?): MediaTecorderManger? {
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return MediaTecorderManger()
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}
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}
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val instance: MediaTecorderManger?
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get() = mMediaTecorderManger[
null]
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}
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}
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package com.airiche.httplibrary.http.utils
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/**
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* Created by yuon 2020/11/28.
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*/
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abstract
class SingletonUtils<T, P> {
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@Volatile
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private
var mInstance: T? =
null
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protected
abstract
fun create(var1: P): T
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operator
fun get(p: P): T {
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if (mInstance ==
null) {
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if (mInstance ==
null) {
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mInstance = create(p)
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}
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}
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return mInstance!!
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}
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}
FileManger:
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package com.airiche.httplibrary.http.manager;
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import android.os.AsyncTask;
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import android.os.Environment;
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import android.os.StatFs;
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import android.util.Log;
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import java.io.File;
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import
static android.content.ContentValues.TAG;
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/**
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* Created by Administrator on 2020/12/05.
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*/
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public
class FileManger {
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public
static
final
long LOW_STORAGE_THRESHOLD_BYTES =
50000000;
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private
final Object mStorageSpaceLock =
new Object();
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private
long mStorageSpaceBytes = LOW_STORAGE_THRESHOLD_BYTES;
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public
interface OnStorageUpdateDoneListener {
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public void onStorageUpdateDone(long bytes);
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}
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private
boolean mPaused =
false;
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public void updateStorageSpaceAndHint(final OnStorageUpdateDoneListener callback) {
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/*
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* We execute disk operations on a background thread in order to
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* free up the UI thread. Synchronizing on the lock below ensures
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* that when getStorageSpaceBytes is called, the main thread waits
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* until this method has completed.
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*
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* However, .execute() does not ensure this execution block will be
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* run right away (.execute() schedules this AsyncTask for sometime
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* in the future. executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
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* tries to execute the task in parellel with other AsyncTasks, but
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* there's still no guarantee).
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* e.g. don't call this then immediately call getStorageSpaceBytes().
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* Instead, pass in an OnStorageUpdateDoneListener.
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*/
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(
new AsyncTask<Void, Void, Long>() {
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@Override
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protected Long doInBackground(Void... arg) {
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synchronized (mStorageSpaceLock) {
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mStorageSpaceBytes = getAvailableSpace();
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return mStorageSpaceBytes;
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}
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}
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@Override
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protected void onPostExecute(Long bytes) {
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// updateStorageHint(bytes);
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// This callback returns after I/O to check disk, so we could be
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// pausing and shutting down. If so, don't bother invoking.
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if (callback !=
null && !mPaused) {
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callback.onStorageUpdateDone(bytes);
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}
else {
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Log.v(TAG,
"ignoring storage callback after activity pause");
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}
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}
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}).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
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}
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public
static
final String DCIM =
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Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString();
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public
static
final String DIRECTORY = DCIM +
"/Camera";
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public
static
final
long PREPARING = -
2L;
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public
static
final
long UNAVAILABLE = -
1L;
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public
static
final
long UNKNOWN_SIZE = -
3L;
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public static long getAvailableSpace() {
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String state = Environment.getExternalStorageState();
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if (Environment.MEDIA_CHECKING.equals(state)) {
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return PREPARING;
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}
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if (!Environment.MEDIA_MOUNTED.equals(state)) {
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return UNAVAILABLE;
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}
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File dir =
new File(DIRECTORY);
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dir.mkdirs();
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if (!dir.isDirectory() || !dir.canWrite()) {
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return UNAVAILABLE;
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}
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try {
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StatFs stat =
new StatFs(DIRECTORY);
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return stat.getAvailableBlocks() * (
long) stat.getBlockSize();
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}
catch (Exception e) {
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Log.i(TAG,
"Fail to access external storage", e);
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}
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return UNKNOWN_SIZE;
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}
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}
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FileSizeUtil.ConfirmFile(Path)
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/**
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* 创建目录和文件
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*/
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fun ConfirmFile(filePath: String?) {
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try {
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val f = File(filePath)
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val parent = f.parentFile
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if (!parent.exists()) parent.mkdirs()
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if (!f.exists()) f.createNewFile()
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}
catch (ex: Exception) {
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ex.printStackTrace()
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}
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}
基本源码都在这了, 录像也跟原生有点像,毕竟还是安卓,只不过RK的需要多配置一些东西!有用的话请点个赞,要demo(RK主板)的可以找我!
转载：https://blog.csdn.net/qq_36333309/article/details/111505818
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