Kotlin高仿微信-项目实践58篇详细讲解了各个功能点，包括：注册、登录、主页、单聊(文本、表情、语音、图片、小视频、视频通话、语音通话、红包、转账)、群聊、个人信息、朋友圈、支付服务、扫一扫、搜索好友、添加好友、开通VIP等众多功能。

Kotlin高仿微信-项目实践58篇，点击查看详情

效果图：

实现代码：

/*** Author : wangning* Email : maoning20080809@163.com* Date : 2022/5/23 22:01* Description : 拍照*/
class CameraFragment : BaseDataBindingFragment(){override fun getLayoutRes() = R.layout.wc_svideo_cameraprivate lateinit var outputDirectory: Fileprivate lateinit var videoCapture: VideoCaptureprivate var activeRecording: ActiveRecording? = nullprivate lateinit var recordingState: VideoRecordEventprivate var audioEnabled = trueprivate val mainThreadExecutor by lazy { ContextCompat.getMainExecutor(requireContext()) }private var isBack = trueprivate var imageCapture: ImageCapture? = nullprivate lateinit var cameraExecutor: ExecutorServiceprivate val REQ_CAMREA_CODE = 101val EXTENSION_WHITELIST = arrayOf("JPG")var enterType = 0enum class UiState {IDLE,       // Not recording, all UI controls are active.RECORDING,  // Camera is recording, only display Pause/Resume & Stop button.FINALIZED,  // Recording just completes, disable all RECORDING UI controls.}override fun onViewCreated(view: View, savedInstanceState: Bundle?) {super.onViewCreated(view, savedInstanceState)TagUtils.d("拍小视频开始。。")//initCameraFragment()handlePermission()}private fun handlePermission(){if(ContextCompat.checkSelfPermission(requireActivity(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED){requestPermissions(arrayOf(Manifest.permission.CAMERA), REQ_CAMREA_CODE)} else {initCameraFragment()}}override fun onRequestPermissionsResult( requestCode: Int, permissions: Array, grantResults: IntArray ) {super.onRequestPermissionsResult(requestCode, permissions, grantResults)if(requestCode == REQ_CAMREA_CODE && grantResults != null && grantResults.size > 0){if(grantResults[0] == PackageManager.PERMISSION_GRANTED){initCameraFragment()}}}override fun onDestroyView() {super.onDestroyView()cameraExecutor.shutdown()}private fun setGalleryThumbnail(uri: Uri) {/*fragmentCameraBinding.btnPhotoView.let { photoViewButton ->photoViewButton.post {photoViewButton.setPadding(resources.getDimension(R.dimen.stroke_small).toInt())Glide.with(photoViewButton).load(uri).apply(RequestOptions.circleCropTransform()).into(photoViewButton)}}*/}private suspend fun bindCameraUseCases() {//var degree = previewView.display.rotationval cameraProvider: ProcessCameraProvider = ProcessCameraProvider.getInstance(requireContext()).await()val cameraSelector = if (isBack) CameraSelector.DEFAULT_BACK_CAMERA else CameraSelector.DEFAULT_FRONT_CAMERAval preview = Preview.Builder().setTargetAspectRatio(DEFAULT_ASPECT_RATIO).build().apply { setSurfaceProvider(previewView.surfaceProvider) }val recorder = Recorder.Builder()//.setQualitySelector(QualitySelector.of(QualitySelector.QUALITY_SD)).setQualitySelector(QualitySelector.of(QualitySelector.QUALITY_FHD)).build()videoCapture = VideoCapture.withOutput(recorder)imageCapture = ImageCapture.Builder().setCaptureMode(ImageCapture.CAPTURE_MODE_MINIMIZE_LATENCY)//.setTargetRotation(ROTATION_90) // 设置旋转角度.setFlashMode(ImageCapture.FLASH_MODE_AUTO).setTargetAspectRatio(DEFAULT_ASPECT_RATIO).build()try {cameraProvider.unbindAll()cameraProvider.bindToLifecycle(viewLifecycleOwner,cameraSelector,videoCapture,imageCapture,preview)} catch (e: Exception) {TagUtils.e("Use case binding failed ${e}")e.printStackTrace()resetUIandState("bindToLifecycle failed: $e")}}var outFile : File? = null@SuppressLint("MissingPermission")private fun startRecording() {outFile = createFile(outputDirectory, FILENAME, VIDEO_EXTENSION)TagUtils.i("outFile: $outFile")val outputOptions: FileOutputOptions = FileOutputOptions.Builder(outFile!!).build()activeRecording = videoCapture.output.prepareRecording(requireActivity(), outputOptions).withEventListener(mainThreadExecutor, captureListener).apply { if (audioEnabled) withAudioEnabled() }.start()TagUtils.i("Recording started")}private val captureListener = Consumer { event ->if (event !is VideoRecordEvent.Status) recordingState = eventupdateUI(event)if (event is VideoRecordEvent.Finalize) showVideo(event)}private fun takePicture() {imageCapture?.let { imageCapture ->val photoFile = createFile(outputDirectory, FILENAME, PHOTO_EXTENSION)val metadata = ImageCapture.Metadata().apply {//isReversedHorizontal = isBack}val outputOptions = ImageCapture.OutputFileOptions.Builder(photoFile).setMetadata(metadata).build()imageCapture.takePicture(outputOptions, cameraExecutor, object : ImageCapture.OnImageSavedCallback {override fun onError(exc: ImageCaptureException) {TagUtils.e("Photo capture failed: ${exc.message}")}override fun onImageSaved(output: ImageCapture.OutputFileResults) {//val savedUri: Uri = output.savedUri ?: Uri.fromFile(photoFile)TagUtils.d( "Photo capture succeeded: $outFile")TagUtils.d( "Photo capture 成功: $photoFile")lifecycleScope.launch {findNavController()?.popBackStack()var bundle = bundleOf(CommonUtils.Moments.TYPE_IMAGE_PATH to photoFile,CommonUtils.Moments.TYPE_NAME to CommonUtils.Moments.TYPE_PICTURE,TYPE_ENTER to enterType)findNavController().navigate( R.id.action_svideo_play, bundle)TagUtils.d("拍照成功 ${photoFile}")}}})// We can only change the foreground Drawable using API level 23+ APIif (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {// Display flash animation to indicate that photo was capturedcontainer.postDelayed({container.foreground = ColorDrawable(Color.WHITE)container.postDelayed({ container.foreground = null }, ANIMATION_FAST_MILLIS)}, ANIMATION_SLOW_MILLIS)}}}private fun initCameraFragment() {outputDirectory = getOutputDirectory(requireContext())cameraExecutor = Executors.newSingleThreadExecutor()initializeUI()viewLifecycleOwner.lifecycleScope.launch {bindCameraUseCases()}}private fun switchCamera() {isBack = !isBacklifecycleScope.launch {bindCameraUseCases()}}private fun changeFlashMode() {when (imageCapture?.flashMode) {ImageCapture.FLASH_MODE_AUTO -> {imageCapture?.flashMode = ImageCapture.FLASH_MODE_ONiv_torch.setImageResource(R.drawable.icon_flash_always_on)}ImageCapture.FLASH_MODE_ON -> {imageCapture?.flashMode = ImageCapture.FLASH_MODE_OFFiv_torch.setImageResource(R.drawable.icon_flash_always_off)}ImageCapture.FLASH_MODE_OFF -> {imageCapture?.flashMode = ImageCapture.FLASH_MODE_AUTOiv_torch.setImageResource(R.drawable.icon_flash_auto)}else -> Unit}}@SuppressLint("ClickableViewAccessibility", "MissingPermission")private fun initializeUI() {enterType = arguments?.getInt(TYPE_ENTER) as IntlifecycleScope.launch(Dispatchers.IO) {outputDirectory.listFiles { file ->EXTENSION_WHITELIST.contains(file.extension.uppercase(Locale.ROOT))}?.maxOrNull()?.let {setGalleryThumbnail(Uri.fromFile(it))}}btn_switch_camera.setOnClickListener {switchCamera()}btn_photo_view.setOnClickListener {TagUtils.d("点击相册。。。")/*findNavController().navigate(CameraFragmentDirections.actionCameraToGallery(outputDirectory.absolutePath))*/}audio_selection.isChecked = audioEnabledaudio_selection.setOnClickListener {audioEnabled = audio_selection.isChecked}btn_record.setOnLongClickListener(object :CircleProgressButtonView.OnLongClickListener {override fun onLongClick() {if (!this@CameraFragment::recordingState.isInitialized || recordingState is VideoRecordEvent.Finalize) {startRecording()}}override fun onNoMinRecord(currentTime: Int) = Unitoverride fun onRecordFinishedListener() {if (activeRecording == null || recordingState is VideoRecordEvent.Finalize) returnval recording = activeRecordingif (recording != null) {recording.stop()activeRecording = null}}})/*btn_record.setOnClickListener(CircleProgressButtonView.OnClickListener {takePicture()})*/btn_record.setOnClickListener(object : CircleProgressButtonView.OnClickListener{override fun onClick() {takePicture()}})iv_torch.setOnClickListener {changeFlashMode()}}private fun updateUI(event: VideoRecordEvent) {val state = if (event is VideoRecordEvent.Status) recordingState.getName()else event.getName()TagUtils.i("event.getName(): ${event.getName()}")when (event) {is VideoRecordEvent.Status -> {// placeholder: we update the UI with new status after this when() block,// nothing needs to do here.}is VideoRecordEvent.Start -> {showUI(UiState.RECORDING, event.getName())}is VideoRecordEvent.Finalize -> {showUI(UiState.FINALIZED, event.getName())}is VideoRecordEvent.Pause -> {}is VideoRecordEvent.Resume -> {}else -> {TagUtils.e("Error(Unknown Event) from Recorder")return}}val stats = event.recordingStatsval size = stats.numBytesRecorded / 1000val time = java.util.concurrent.TimeUnit.NANOSECONDS.toSeconds(stats.recordedDurationNanos)var text = "${state}: recorded ${size}KB, in ${time}second"if (event is VideoRecordEvent.Finalize)text = "${text}\nFile saved to: ${event.outputResults.outputUri}"capture_status.text = textTagUtils.i("recording event: $text")}private fun showUI(state: UiState, status: String = "idle") {TagUtils.i("showUI: UiState: $status")when (state) {UiState.IDLE -> {btn_switch_camera.visibility = View.VISIBLEaudio_selection.visibility = View.VISIBLE}UiState.RECORDING -> {btn_switch_camera.visibility = View.INVISIBLEaudio_selection.visibility = View.INVISIBLE}UiState.FINALIZED -> {}else -> {val errorMsg = "Error: showUI($state) is not supported"TagUtils.e(errorMsg)return}}capture_status.text = status}private fun resetUIandState(reason: String) {showUI(UiState.IDLE, reason)audioEnabled = falseaudio_selection.isChecked = audioEnabled}private fun showVideo(event: VideoRecordEvent) {TagUtils.d("0小视频路径：showVideo ")if (event !is VideoRecordEvent.Finalize) returnlifecycleScope.launch {findNavController()?.popBackStack()var bundle = bundleOf(CommonUtils.Moments.TYPE_VIDEO_PATH to outFile,CommonUtils.Moments.TYPE_NAME to CommonUtils.Moments.TYPE_VIDEO,TYPE_ENTER to enterType)findNavController().navigate( R.id.action_svideo_play, bundle)}}companion object {const val DEFAULT_ASPECT_RATIO = AspectRatio.RATIO_16_9//val TAG: String = CameraFragment::class.java.simpleNameprivate const val FILENAME = "yyyyMMddHHmmss"private const val VIDEO_EXTENSION = ".mp4"private const val PHOTO_EXTENSION = ".jpg"private const val IMMERSIVE_FLAG_TIMEOUT = 500Lconst val ANIMATION_FAST_MILLIS = 50Lconst val ANIMATION_SLOW_MILLIS = 100L//聊天页面小视频const val TYPE_CHAT = 1//朋友圈小视频const val TYPE_MOMENT = 2//进入类型const val TYPE_ENTER = "type_enter"//返回类型const val TYPE_BACK = "type_back"fun getOutputDirectory(context: Context): File {/*val appContext = context.applicationContextval mediaDir = context.externalMediaDirs.firstOrNull()?.let {File(it, "SVideo").apply { mkdirs() }}return if (mediaDir != null && mediaDir.exists())mediaDir else appContext.filesDir*/return File(FileUtils.getFilePath())}fun createFile(baseFolder: File, format: String, extension: String) =File(baseFolder, SimpleDateFormat(format, Locale.US).format(System.currentTimeMillis()) + extension)}
}fun VideoRecordEvent.getName(): String {return when (this) {is VideoRecordEvent.Status -> "Status"is VideoRecordEvent.Start -> "Started"is VideoRecordEvent.Finalize -> "Finalized"is VideoRecordEvent.Pause -> "Paused"is VideoRecordEvent.Resume -> "Resumed"else -> "Error(Unknown)"}
}

/*** Author : wangning* Email : maoning20080809@163.com* Date : 2022/5/23 22:05* Description : 录制视频*/
class CircleProgressButtonView : View {constructor(context: Context) : this(context, null)constructor(context: Context, attributeSet: AttributeSet?) : this(context, attributeSet, 0)constructor(context: Context, attributeSet: AttributeSet?, defStyleAttr: Int) : super(context, attributeSet, defStyleAttr) {init(context, attributeSet)}private val WHAT_LONG_CLICK = 1private var mBigCirclePaint: Paint? = nullprivate var mSmallCirclePaint: Paint? = nullprivate var mProgressCirclePaint: Paint? = nullprivate var mHeight //当前View的高= 0private var mWidth //当前View的宽= 0private var mInitBitRadius = 0fprivate var mInitSmallRadius = 0fprivate var mBigRadius = 0fprivate var mSmallRadius = 0fprivate var mStartTime: Long = 0private var mEndTime: Long = 0private var isRecording //录制状态= falseprivate var isMaxTime //达到最大录制时间= falseprivate var mCurrentProgress //当前进度= 0fprivate val mLongClickTime: Long = 500 //长按最短时间(毫秒)，private var mTime = 15 //录制最大时间sprivate var mMinTime = 3 //录制最短时间private var mProgressColor //进度条颜色= 0private var mProgressW = 18f //圆环宽度//当前手指处于按压状态private var isPressed2 = false//圆弧进度变化private var mProgressAni : ValueAnimator? = nullprivate fun init(context: Context, attrs: AttributeSet?) {val a = context.obtainStyledAttributes(attrs, R.styleable.CircleProgressButtonView)mMinTime = a.getInt(R.styleable.CircleProgressButtonView_minTime, 0)mTime = a.getInt(R.styleable.CircleProgressButtonView_maxTime, 10)mProgressW = a.getDimension(R.styleable.CircleProgressButtonView_progressWidth, 12f)mProgressColor = a.getColor(R.styleable.CircleProgressButtonView_progressColor,Color.parseColor("#6ABF66"))a.recycle()initPaint()mProgressAni = ValueAnimator.ofFloat(0f, 360f)mProgressAni?.setDuration((mTime * 1000).toLong())}private fun initPaint() {//初始画笔抗锯齿、颜色mBigCirclePaint = Paint(Paint.ANTI_ALIAS_FLAG)mBigCirclePaint!!.color = Color.parseColor("#DDDDDD")mSmallCirclePaint = Paint(Paint.ANTI_ALIAS_FLAG)mSmallCirclePaint!!.color = Color.parseColor("#FFFFFF")mProgressCirclePaint = Paint(Paint.ANTI_ALIAS_FLAG)mProgressCirclePaint!!.color = mProgressColor}override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {super.onMeasure(widthMeasureSpec, heightMeasureSpec)mWidth = MeasureSpec.getSize(widthMeasureSpec)mHeight = MeasureSpec.getSize(heightMeasureSpec)mBigRadius = mWidth / 2f * 0.75fmInitBitRadius = mBigRadiusmSmallRadius = mBigRadius * 0.75fmInitSmallRadius = mSmallRadius}override fun onDraw(canvas: Canvas) {super.onDraw(canvas)//绘制外圆canvas.drawCircle(mWidth / 2f, mHeight / 2f, mBigRadius, mBigCirclePaint!!)//绘制内圆canvas.drawCircle(mWidth / 2f, mHeight / 2f, mSmallRadius, mSmallCirclePaint!!)//录制的过程中绘制进度条if (isRecording) drawProgress(canvas)}private fun drawProgress(canvas: Canvas) {mProgressCirclePaint!!.strokeWidth = mProgressWmProgressCirclePaint!!.style = Paint.Style.STROKE//用于定义的圆弧的形状和大小的界限val oval = RectF(mWidth / 2f - (mBigRadius - mProgressW / 2),mHeight / 2f - (mBigRadius - mProgressW / 2),mWidth / 2f + (mBigRadius - mProgressW / 2),mHeight / 2f + (mBigRadius - mProgressW / 2))//根据进度画圆弧canvas.drawArc(oval, -90f, mCurrentProgress, false, mProgressCirclePaint!!)}private val mHandler: Handler = object : Handler(Looper.getMainLooper()) {override fun handleMessage(msg: Message) {super.handleMessage(msg)when (msg.what) {WHAT_LONG_CLICK -> {//长按事件触发onLongClickListener2?.onLongClick()//内外圆动画，内圆缩小，外圆放大startAnimation(mBigRadius,mBigRadius * 1.33f,mSmallRadius,mSmallRadius * 0.7f)}}}}override fun onTouchEvent(event: MotionEvent): Boolean {when (event.action) {MotionEvent.ACTION_DOWN -> {isPressed2 = truemStartTime = System.currentTimeMillis()val mMessage = Message.obtain()mMessage.what = WHAT_LONG_CLICKmHandler.sendMessageDelayed(mMessage, mLongClickTime)}MotionEvent.ACTION_UP -> {isPressed2 = falseisRecording = falsemEndTime = System.currentTimeMillis()if (mEndTime - mStartTime < mLongClickTime) {mHandler.removeMessages(WHAT_LONG_CLICK)onClickListener2?.onClick()} else {startAnimation(mBigRadius,mInitBitRadius,mSmallRadius,mInitSmallRadius) //手指离开时动画复原if (mProgressAni != null && mProgressAni!!.currentPlayTime / 1000 < mMinTime && !isMaxTime) {onLongClickListener2?.onNoMinRecord(mMinTime)mProgressAni!!.cancel()} else {//录制完成if (onLongClickListener2 != null && !isMaxTime) {onLongClickListener2?.onRecordFinishedListener()}}}}}return true}private fun startAnimation(bigStart: Float, bigEnd: Float, smallStart: Float, smallEnd: Float) {val bigObjAni = ValueAnimator.ofFloat(bigStart, bigEnd)bigObjAni.duration = 150bigObjAni.addUpdateListener { animation: ValueAnimator ->mBigRadius = animation.animatedValue as Floatinvalidate()}val smallObjAni = ValueAnimator.ofFloat(smallStart, smallEnd)smallObjAni.duration = 150smallObjAni.addUpdateListener { animation: ValueAnimator ->mSmallRadius = animation.animatedValue as Floatinvalidate()}bigObjAni.start()smallObjAni.start()smallObjAni.addListener(object : Animator.AnimatorListener {override fun onAnimationStart(animation: Animator) {isRecording = false}override fun onAnimationEnd(animation: Animator) {//开始绘制圆形进度if (isPressed2) {isRecording = trueisMaxTime = falsestartProgressAnimation()}}override fun onAnimationCancel(animation: Animator) {}override fun onAnimationRepeat(animation: Animator) {}})}private fun startProgressAnimation() {mProgressAni!!.start()mProgressAni!!.addUpdateListener { animation: ValueAnimator ->mCurrentProgress = animation.animatedValue as Floatinvalidate()}mProgressAni!!.addListener(object : Animator.AnimatorListener {override fun onAnimationStart(animation: Animator) {}override fun onAnimationEnd(animation: Animator) {//录制动画结束时，即为录制全部完成if (onLongClickListener2 != null && isPressed2) {isPressed2 = falseisMaxTime = trueonLongClickListener2?.onRecordFinishedListener()startAnimation(mBigRadius, mInitBitRadius, mSmallRadius, mInitSmallRadius)//影藏进度进度条mCurrentProgress = 0finvalidate()}}override fun onAnimationCancel(animation: Animator) {}override fun onAnimationRepeat(animation: Animator) {}})}interface OnLongClickListener {fun onLongClick()//未达到最小录制时间fun onNoMinRecord(currentTime: Int)//录制完成fun onRecordFinishedListener()}var onLongClickListener2: OnLongClickListener? = nullfun setOnLongClickListener(onLongClickListener: OnLongClickListener?) {this.onLongClickListener2 = onLongClickListener}interface OnClickListener {fun onClick()}var onClickListener2: OnClickListener? = nullfun setOnClickListener(onClickListener: OnClickListener) {this.onClickListener2 = onClickListener}}