我無法加載所選圖像。正在加載默認模板圖像。我用帖子中的完整片段代碼對其進行了編輯，您能指導我使用哪個參數上傳到所選圖像嗎？以下更新的代碼有效，但僅上傳預定義的圖像，我無法上傳選定的圖像，我不知道該行使用哪個參數if (this.imageUri != imageUri && requestCode == IMAGE_PICK_CODE && resultCode == RESULT_OK) {class ReportFragment : Fragment(), OnMapReadyCallback, GoogleMap.OnMapClickListener, GoogleMap.OnCameraIdleListener { private var mMapView: MapView? = null private var map: GoogleMap? = null val CAMERA_PERMISSION_CODE = 0 val CAMERA_REQUEST_CODE = 10 lateinit var imageFilePath: String private var imgThumb: ImageView? = null private var spinner: Spinner? = null private var currentLocation: LatLng? = null // TODO: get current location as static variable private var midLatLng: LatLng? = null private var lat: Double? = null private var lng: Double? = null private var objectValues: Array<String>? = null private var imageUri: Uri? = null private var pictureTaken: Boolean = false private var progress: ProgressBar? = null val PERMISSION_CODE_READ = 1001 val PERMISSION_CODE_WRITE = 1002 val IMAGE_PICK_CODE = 1000 private val database: FirebaseDatabase? = FirebaseDatabase.getInstance() private val markersRef: DatabaseReference? = database!!.getReference("markers") private val storage = FirebaseStorage.getInstance() private val storageRef: StorageReference = storage.reference private var imagesRef: StorageReference? = null private val permissoes = arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE) inner class GenericFileProvider : FileProvider()
1 回答
斯蒂芬大帝
TA貢獻1827條經驗 獲得超8個贊
這是一個空指針異常。imageUri 為空
MediaStore.Images.Media.getBitmap(context.contentResolver, this.imageUri) as Bitmap
如果您檢查 getBitmap() 的實現。
看
public static final Bitmap getBitmap(ContentResolver cr, Uri url)
throws FileNotFoundException, IOException {
InputStream input = cr.openInputStream(url);
Bitmap bitmap = BitmapFactory.decodeStream(input);
input.close();
return bitmap;
}
你會發現它調用了 openInputStream() ，它需要一個非空的 uri。
public final @Nullable InputStream openInputStream(@NonNull Uri uri)
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (this.imageUri != null && requestCode == IMAGE_PICK_CODE && resultCode == RESULT_OK) {
try {
//Getting the Bitmap from Gallery
val bitmap = MediaStore.Images.Media.getBitmap(context.contentResolver, this.imageUri) as Bitmap
this.imgThumb!!.setImageBitmap(bitmap)
this.pictureTaken = true
} catch (e:IOException) {
e.printStackTrace()
}
} else {
Toast.makeText(context, "Error loading image", Toast.LENGTH_LONG)
}
}
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