How to take a screenshot and share it programmatically

Question

I am making an application in Android in which I have to take screenshot of one of my activities and mail it as attachment.

I want to take screenshot of the current

Answer 1

Kotlin complete solution Code with permission check :

1- Use this nice library to take screen shot with java / Kotlin / Rx functionality, add library dependency : InstaCapture github link

 implementation "com.github.tarek360:instacapture:2.0.1"

2- Must check permission for compatibility on all android versions:

     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && checkSelfPermission(
                Manifest.permission.WRITE_EXTERNAL_STORAGE
            ) != PackageManager.PERMISSION_GRANTED
        ) { // Needs permission so request it
            DeviceUtil.showAlertMsg(this, GeneralDicModel.shareMsgScreenShot!!)
            requestPermissions(
                arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE),
                PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE
            )   //callback  result to onRequestPermissionsResult
        } else { //Has got the permission before or doesn't need
            screenShotAndShareIt()
        }

3- Check permission result :

 override fun onRequestPermissionsResult(
    requestCode: Int, permissions: Array,
    grantResults: IntArray
) {
    when (requestCode) {
        PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE -> {
            if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                screenShotAndShareIt()
            } else {
                //  toast("Permission must be granted in order to save scrrenshot file")
            }
        }
    }
}

4- Func call for take Screenshot & Share it by intent :

 fun screenShotAndShareIt() {
    Instacapture.capture(this, object : SimpleScreenCapturingListener() {
    override fun onCaptureComplete(bitmap: Bitmap) {
    val state = Environment.getExternalStorageState()
            if (Environment.MEDIA_MOUNTED == state) {
                val path: String = Environment.getExternalStorageDirectory().toString()  
                val picDir = File(path.plus("/myPic"))
                if (!picDir.exists()) {
                    picDir.mkdir()
                }
                var bitmapScreenShot = bitmap
                val fileName = "screenshot" + ".jpg"
                val picFile = File(picDir.path.plus("/" + fileName))
                try {
                    picFile.createNewFile()
                    val picOut = FileOutputStream(picFile)
                    bitmapScreenShot =
                        Bitmap.createBitmap(bitmapScreenShot, 0, 0, bitmapScreenShot.width, bitmapScreenShot.height)
                    val saved: Boolean = bitmapScreenShot.compress(Bitmap.CompressFormat.JPEG, 100, picOut)
                    if (saved) {
                        Log.i(
                            TAG,
                            "ScreenShotAndShareIt : Image saved to your device Pictures " + "directory! + ${picFile.absolutePath}"
                        )
                    } else {
                        Log.i(TAG, "ScreenShotAndShareIt Error on Save! + ${picFile.absolutePath}")
                    }
                    picOut.close()

                    // share via intent
                    val intent: Intent = Intent(android.content.Intent.ACTION_SEND)
                    intent.type = "image/jpeg"
                    intent.putExtra(Intent.EXTRA_STREAM, Uri.parse(picFile.absolutePath))
                    startActivity(Intent.createChooser(intent, "Sharing"))
                } catch (e: Exception) {
                    Log.i(TAG, "ScreenShotAndShareIt Error catch : " + e.printStackTrace())
                }
            } else {
                //Error
                Log.i(TAG, "ScreenShotAndShareIt Error Environment.MEDIA_MOUNTED == state : " )
            }
 }
 })

5- Declare this variable :

val PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 100

6- Do not forget to Add this permissions to AndroidManifest.xml: