Question

我正在学习Kotlin和Exoplayer，并且正在制作一个允许用户选择视频并在下一屏幕上播放的应用程序。但是，启动Intent后，将无法播放所选视频。

第一个活动：

private fun openGallery() {
        intent = Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
        intent.type = "video/*"
        startActivityForResult(intent, 1)
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (resultCode == Activity.RESULT_OK && requestCode == 1) {

            val selectedMediaUri = data!!.getData()
            if (selectedMediaUri.toString().contains("video")) {
                //handle video

                // Get selected gallery image
                val selectedVideo = data.getData()
                // Get and resize profile image
                val filePathColumn = arrayOf(MediaStore.Video.Media.DATA)
                val cursor = applicationContext.contentResolver.query(selectedVideo!!, filePathColumn, null, null, null)
                cursor!!.moveToFirst()

                val columnIndex = cursor.getColumnIndex(filePathColumn[0])
                val videoStoragePath = cursor.getString(columnIndex)
                cursor.close()

                val intent = Intent(this@MainActivity,PostarVideoActivity::class.java)
                intent.putExtra("path",videoStoragePath)
                startActivity(intent)

            }

        }

第二活动：

val path = intent.extras!!.getString("path")
        Log.i("mypath", path)

val player = ExoPlayerFactory.newSimpleInstance(applicationContext)
        videoPreview.player = player

        val dataSourceFactory = DefaultDataSourceFactory(
            applicationContext,
            Util.getUserAgent(applicationContext, applicationContext.getString(R.string.app_name))
        )
        // This is the MediaSource representing the media to be played.
        val videoSource = ProgressiveMediaSource.Factory(dataSourceFactory)
            .createMediaSource(Uri.parse(path!!))
        // Prepare the player with the source.
        player.prepare(videoSource)

如何解决此错误？预先感谢。

Answer 1

错误很简单... 只需请求READ_EXTERNAL_STORAGE和WRITE_EXTERNAL_STORAGE权限

使用Dexter library可以轻松解决此问题。也许这可以帮助某人

Kotlin：Exoplayer没有播放视频

1 个答案: