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android/src/main/kotlin/studio/midoridesign/gal/GalPlugin.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,35 +1,198 @@ | ||
| package studio.midoridesign.gal | ||
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| import android.Manifest | ||
| import android.app.Activity | ||
| import android.content.ContentResolver | ||
| import android.content.ContentValues | ||
| import android.content.Context | ||
| import android.content.Intent | ||
| import android.content.pm.PackageManager | ||
| import android.net.Uri | ||
| import android.os.Build | ||
| import android.os.Handler | ||
| import android.os.Looper | ||
| import android.provider.MediaStore | ||
| import androidx.annotation.NonNull | ||
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|
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| import androidx.core.app.ActivityCompat | ||
| import androidx.core.content.ContextCompat | ||
| import io.flutter.embedding.engine.plugins.FlutterPlugin | ||
| import io.flutter.embedding.engine.plugins.FlutterPlugin.FlutterPluginBinding | ||
| import io.flutter.embedding.engine.plugins.activity.ActivityAware | ||
| import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding | ||
| import io.flutter.plugin.common.MethodCall | ||
| import io.flutter.plugin.common.MethodChannel | ||
| import io.flutter.plugin.common.MethodChannel.MethodCallHandler | ||
| import io.flutter.plugin.common.MethodChannel.Result | ||
| import io.flutter.plugin.common.PluginRegistry | ||
| import java.io.ByteArrayInputStream | ||
| import java.io.File | ||
| import java.io.FileInputStream | ||
| import java.io.FileNotFoundException | ||
| import java.io.IOException | ||
| import java.io.InputStream | ||
| import java.io.OutputStream | ||
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|
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| class GalPlugin : FlutterPlugin, MethodCallHandler, ActivityAware, PluginRegistry.RequestPermissionsResultListener { | ||
| private val PERMISSION = Manifest.permission.WRITE_EXTERNAL_STORAGE | ||
| private val IMAGE_URI = MediaStore.Images.Media.EXTERNAL_CONTENT_URI | ||
| private val VIDEO_URI = MediaStore.Video.Media.EXTERNAL_CONTENT_URI | ||
| private val PERMISSION_REQUEST_CODE = 1317298 // Anything unique in the app. | ||
| private val hasAccessByDefault = Build.VERSION.SDK_INT < 23 || (Build.VERSION.SDK_INT >= 29 && Build.VERSION.SDK_INT < 30) | ||
|
|
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| private var channel: MethodChannel? = null | ||
| private var pluginBinding: FlutterPluginBinding? = null | ||
| private var activity: Activity? = null | ||
| private var callback: Callback? = null | ||
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| override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPluginBinding) { | ||
| channel = MethodChannel(flutterPluginBinding.binaryMessenger, "gal") | ||
| channel?.setMethodCallHandler(this) | ||
| pluginBinding = flutterPluginBinding | ||
| } | ||
|
|
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| override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) { | ||
| when (call.method) { | ||
| "putVideo", "putImage" -> { | ||
| Thread { | ||
| try { | ||
| putMedia(pluginBinding?.applicationContext!!, call.argument<Any>("path") as String, | ||
| call.method.contains("Image")) | ||
| Handler(Looper.getMainLooper()).post { result.success(null) } | ||
| } catch (e: Exception) { | ||
| handleError(e, result) | ||
| } | ||
| }.start() | ||
| } | ||
| "putImageBytes" -> { | ||
| Thread { | ||
| try { | ||
| putImageBytes(pluginBinding?.applicationContext!!, call.argument<Any>("bytes") as ByteArray) | ||
| Handler(Looper.getMainLooper()).post { result.success(null) } | ||
| } catch (e: Exception) { | ||
| handleError(e, result) | ||
| } | ||
| }.start() | ||
| } | ||
| "open" -> { | ||
| open() | ||
| Handler(Looper.getMainLooper()).post { result.success(null) } | ||
| } | ||
| "hasAccess" -> { | ||
| result.success(if (hasAccessByDefault) true else hasAccess()) | ||
| } | ||
| "requestAccess" -> { | ||
| if (hasAccessByDefault) { | ||
| result.success(true) | ||
| } else { | ||
| requestAccess(object : Callback { | ||
| override fun onComplete(res: Boolean) { | ||
| result.success(res) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
| else -> result.notImplemented() | ||
| } | ||
| } | ||
|
|
||
| @Throws(IOException::class, SecurityException::class, FileNotFoundException::class) | ||
| private fun putMedia(context: Context, path: String, isImage: Boolean) { | ||
| val file = File(path) | ||
| FileInputStream(file).use { `in` -> writeContent(context, `in`, isImage) } | ||
| } | ||
|
|
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| @Throws(IOException::class, SecurityException::class) | ||
| private fun putImageBytes(context: Context, bytes: ByteArray) { | ||
| ByteArrayInputStream(bytes).use { `in` -> writeContent(context, `in`, true) } | ||
| } | ||
|
|
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| @Throws(IOException::class, SecurityException::class) | ||
| private fun writeContent(context: Context, `in`: InputStream, isImage: Boolean) { | ||
| val resolver: ContentResolver = context.contentResolver | ||
| val values = ContentValues() | ||
| values.put(MediaStore.MediaColumns.DATE_ADDED, System.currentTimeMillis()) | ||
| val mediaUri: Uri? = resolver.insert(if (isImage) IMAGE_URI else VIDEO_URI, values) | ||
| resolver.openOutputStream(mediaUri!!).use { out -> | ||
| val buffer = ByteArray(8192) | ||
| var bytesRead: Int | ||
| while (`in`.read(buffer).also { bytesRead = it } != -1) { | ||
| out?.write(buffer, 0, bytesRead) | ||
| } | ||
| } | ||
| } | ||
|
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| private fun open() { | ||
| val context: Context = pluginBinding!!.applicationContext | ||
| val intent = Intent() | ||
| intent.action = Intent.ACTION_VIEW | ||
| intent.type = "image/*" | ||
| intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK | ||
| context.startActivity(intent) | ||
| } | ||
|
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| private fun hasAccess(): Boolean { | ||
| val context: Context = pluginBinding!!.applicationContext | ||
| val status = ContextCompat.checkSelfPermission(context, PERMISSION) | ||
| return status == PackageManager.PERMISSION_GRANTED | ||
| } | ||
|
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| private fun requestAccess(callback: Callback) { | ||
| this.callback = callback | ||
| ActivityCompat.requestPermissions(activity!!, arrayOf(PERMISSION), PERMISSION_REQUEST_CODE) | ||
| } | ||
|
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| private fun sendError(errorCode: String, message: String, stackTrace: Array<StackTraceElement>, result: Result) { | ||
| val trace = StringBuilder() | ||
| for (st in stackTrace) { | ||
| trace.append(st.toString()) | ||
| trace.append("\n") | ||
| } | ||
| Handler(Looper.getMainLooper()).post { result.error(errorCode, message, trace.toString()) } | ||
| } | ||
|
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| private fun handleError(e: Exception, result: Result) { | ||
| val errorCode: String = when (e) { | ||
| is SecurityException -> "ACCESS_DENIED" | ||
| is FileNotFoundException -> "NOT_SUPPORTED_FORMAT" | ||
| is IOException -> if (e.toString().contains("No space left on device")) "NOT_ENOUGH_SPACE" else "UNEXPECTED" | ||
| else -> "UNEXPECTED" | ||
| } | ||
| sendError(errorCode, e.toString(), e.stackTrace, result) | ||
| } | ||
|
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| override fun onAttachedToActivity(@NonNull activityPluginBinding: ActivityPluginBinding) { | ||
| activity = activityPluginBinding.activity | ||
| activityPluginBinding.addRequestPermissionsResultListener(this) | ||
| } | ||
|
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| override fun onDetachedFromActivity() { | ||
| activity = null | ||
| } | ||
|
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| override fun onReattachedToActivityForConfigChanges(@NonNull activityPluginBinding: ActivityPluginBinding) { | ||
| activity = activityPluginBinding.activity | ||
| activityPluginBinding.addRequestPermissionsResultListener(this) | ||
| } | ||
|
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| override fun onDetachedFromActivityForConfigChanges() { | ||
| activity = null | ||
| } | ||
|
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| override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray): Boolean { | ||
| if (requestCode != PERMISSION_REQUEST_CODE || grantResults.isEmpty()) { | ||
| return false | ||
| } | ||
| callback?.onComplete(grantResults[0] == PackageManager.PERMISSION_GRANTED) | ||
| return true | ||
| } | ||
|
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| override fun onDetachedFromEngine(@NonNull binding: FlutterPluginBinding) { | ||
| channel?.setMethodCallHandler(null) | ||
| pluginBinding = null | ||
| } | ||
| } | ||
|
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| /** GalPlugin */ | ||
| class GalPlugin: FlutterPlugin, MethodCallHandler { | ||
| /// The MethodChannel that will the communication between Flutter and native Android | ||
| /// | ||
| /// This local reference serves to register the plugin with the Flutter Engine and unregister it | ||
| /// when the Flutter Engine is detached from the Activity | ||
| private lateinit var channel : MethodChannel | ||
|
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| override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) { | ||
| channel = MethodChannel(flutterPluginBinding.binaryMessenger, "gal") | ||
| channel.setMethodCallHandler(this) | ||
| } | ||
|
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| override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) { | ||
| if (call.method == "getPlatformVersion") { | ||
| result.success("Android ${android.os.Build.VERSION.RELEASE}") | ||
| } else { | ||
| result.notImplemented() | ||
| } | ||
| } | ||
|
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| override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) { | ||
| channel.setMethodCallHandler(null) | ||
| } | ||
| interface Callback { | ||
| fun onComplete(result: Boolean) | ||
| } |
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