我不能在kotlin中找到任何示例，但在java中找到一个，但想将其转换为kotlin，以便它可以与我的应用程序一起工作。
public void clickFoto(View view) {
takePic();
}
//取Pic（）
private void takePic() {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
*File file = new File(Environment.getExternalStorageDirectory(), "/your_name_folder/a" + "/photo_" + timeStamp + ".png");*
imageUri = Uri.fromFile(file);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, PICTURE_RESULT);
}
//onActivityResult
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PICTURE_RESULT:
if (requestCode == PICTURE_RESULT)
if (resultCode == Activity.RESULT_OK) {
try {
Bitmap thumbnail = MediaStore.Images.Media.getBitmap(
getContentResolver(), imageUri);
imgFoto.setImageBitmap(thumbnail);
imageurl = getRealPathFromURI(imageUri);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
//getRealPathFromUri
public String getRealPathFromURI(Uri contentUri) {
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
您可以在Android Studio中找到将Java转换为静态编程语言文件菜单（Ctrl Shift Alt K）。
无论如何，使用转换，您的代码将是这样的。
fun clickFoto(view:View) {
takePic()
}
private fun takePic() {
val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss").format(Date())
val file = File(Environment.getExternalStorageDirectory(), "/your_name_folder/a" + "/photo_" + timeStamp + ".png")
imageUri = Uri.fromFile(file)
val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri)
startActivityForResult(intent, PICTURE_RESULT)
}
fun onActivityResult(requestCode:Int, resultCode:Int, data:Intent) {
when (requestCode) {
PICTURE_RESULT -> if (requestCode == PICTURE_RESULT)
if (resultCode == Activity.RESULT_OK)
{
try
{
val thumbnail = MediaStore.Images.Media.getBitmap(
getContentResolver(), imageUri)
imgFoto.setImageBitmap(thumbnail)
imageurl = getRealPathFromURI(imageUri)
}
catch (e:Exception) {
e.printStackTrace()
}
}
}
}
fun getRealPathFromURI(contentUri:Uri):String {
val proj = arrayOf<String>(MediaStore.Images.Media.DATA)
val cursor = managedQuery(contentUri, proj, null, null, null)
val column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA)
cursor.moveToFirst()
return cursor.getString(column_index)
}
