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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| package org.mifos.mobile.utils | ||
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| import com.google.zxing.Result | ||
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| sealed class QrCodeUiState { | ||
| object Loading : QrCodeUiState() | ||
| data class ShowError(val message: Int) : QrCodeUiState() | ||
| data class HandleDecodedResult(val result: Result?) : QrCodeUiState() | ||
| } |
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app/src/main/java/org/mifos/mobile/viewModels/QrCodeImportViewModel.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package org.mifos.mobile.viewModels | ||
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| import android.net.Uri | ||
| import androidx.lifecycle.LiveData | ||
| import androidx.lifecycle.MutableLiveData | ||
| import androidx.lifecycle.ViewModel | ||
| import com.google.zxing.* | ||
| import com.google.zxing.common.HybridBinarizer | ||
| import com.isseiaoki.simplecropview.CropImageView | ||
| import dagger.hilt.android.lifecycle.HiltViewModel | ||
| import io.reactivex.Single | ||
| import io.reactivex.android.schedulers.AndroidSchedulers | ||
| import io.reactivex.disposables.CompositeDisposable | ||
| import io.reactivex.schedulers.Schedulers | ||
| import org.mifos.mobile.R | ||
| import org.mifos.mobile.utils.QrCodeUiState | ||
| import java.util.* | ||
| import javax.inject.Inject | ||
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| @HiltViewModel | ||
| class QrCodeImportViewModel @Inject constructor() : ViewModel() { | ||
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| private val compositeDisposables: CompositeDisposable = CompositeDisposable() | ||
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| private var result: Result? = null | ||
| private var hasErrorOccurred = false | ||
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| private val _qrCodeUiState = MutableLiveData<QrCodeUiState>() | ||
| val qrCodeUiState: LiveData<QrCodeUiState> = _qrCodeUiState | ||
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| fun getDecodedResult(sourceUri: Uri?, cropImageView: CropImageView?) { | ||
| _qrCodeUiState.value = QrCodeUiState.Loading | ||
| cropImageView?.crop(sourceUri) | ||
| ?.executeAsSingle() | ||
| ?.flatMap { bMap -> | ||
| val intArray = IntArray(bMap.width * bMap.height) | ||
| // copy pixel data from the Bitmap into the 'intArray' array | ||
| bMap.getPixels( | ||
| intArray, | ||
| 0, | ||
| bMap.width, | ||
| 0, | ||
| 0, | ||
| bMap.width, | ||
| bMap.height, | ||
| ) | ||
| val source: LuminanceSource = RGBLuminanceSource( | ||
| bMap.width, | ||
| bMap.height, | ||
| intArray, | ||
| ) | ||
| val bitmap = BinaryBitmap(HybridBinarizer(source)) | ||
| // flags for decoding since it is large file | ||
| val tmpHintsMap: MutableMap<DecodeHintType, Boolean?> = | ||
| EnumMap(DecodeHintType::class.java) | ||
| tmpHintsMap[DecodeHintType.TRY_HARDER] = java.lang.Boolean.TRUE | ||
| tmpHintsMap[DecodeHintType.PURE_BARCODE] = java.lang.Boolean.TRUE | ||
| val reader: Reader = MultiFormatReader() | ||
| try { | ||
| result = reader.decode(bitmap, tmpHintsMap) | ||
| } catch (e: Exception) { | ||
| _qrCodeUiState.value = QrCodeUiState.ShowError(R.string.error_reading_qr) | ||
| } | ||
| Single.just(result) | ||
| } | ||
| ?.subscribeOn(Schedulers.newThread()) | ||
| ?.observeOn(AndroidSchedulers.mainThread()) | ||
| ?.subscribe({ result -> | ||
| _qrCodeUiState.value = QrCodeUiState.HandleDecodedResult(result) | ||
| }) { | ||
| if (!hasErrorOccurred) { | ||
| _qrCodeUiState.value = QrCodeUiState.ShowError(R.string.error_reading_qr) | ||
| } | ||
| hasErrorOccurred = false | ||
| }?.let { compositeDisposables.add(it) } | ||
| } | ||
| } |