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@@ -0,0 +1,94 @@
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+package com.owncloud.android.utils
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+
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+import android.Manifest
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+import android.app.Activity
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+import android.content.Context
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+import android.content.pm.PackageManager
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+import android.os.Build
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+import androidx.core.app.ActivityCompat
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+import androidx.core.content.ContextCompat
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+
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+/**
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+ * Created by scherzia on 29.12.2015.
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+ */
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+object PermissionUtil {
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+ const val PERMISSIONS_EXTERNAL_STORAGE = 1
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+ const val PERMISSIONS_READ_CONTACTS_AUTOMATIC = 2
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+ const val PERMISSIONS_READ_CONTACTS_MANUALLY = 3
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+ const val PERMISSIONS_WRITE_CONTACTS = 4
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+ const val PERMISSIONS_CAMERA = 5
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+
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+ /**
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+ * Wrapper method for ContextCompat.checkSelfPermission().
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+ * Determine whether *the app* has been granted a particular permission.
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+ *
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+ * @param permission The name of the permission being checked.
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+ * @return `true` if app has the permission, or `false` if not.
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+ */
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+ @JvmStatic
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+ fun checkSelfPermission(context: Context, permission: String): Boolean =
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+ ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
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+
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+ /**
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+ * Wrapper method for ActivityCompat.shouldShowRequestPermissionRationale().
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+ * Gets whether you should show UI with rationale for requesting a permission.
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+ * You should do this only if you do not have the permission and the context in
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+ * which the permission is requested does not clearly communicate to the user
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+ * what would be the benefit from granting this permission.
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+ *
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+ * @param activity The target activity.
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+ * @param permission A permission to be requested.
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+ * @return Whether to show permission rationale UI.
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+ */
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+ @JvmStatic
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+ fun shouldShowRequestPermissionRationale(activity: Activity, permission: String): Boolean =
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+ ActivityCompat.shouldShowRequestPermissionRationale(activity, permission)
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+
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+ /**
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+ * For SDK < 30, we can do whatever we want using WRITE_EXTERNAL_STORAGE.
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+ * For SDK above 30, scoped storage is in effect, and WRITE_EXTERNAL_STORAGE is useless. However, we do still need
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+ * READ_EXTERNAL_STORAGE to read and upload files from folders that we don't manage and are not public access.
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+ *
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+ * @return The relevant external storage permission, depending on SDK
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+ */
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+ @JvmStatic
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+ fun getExternalStoragePermission(): String = when {
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+ Build.VERSION.SDK_INT < Build.VERSION_CODES.R -> Manifest.permission.WRITE_EXTERNAL_STORAGE
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+ else -> Manifest.permission.READ_EXTERNAL_STORAGE
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+ }
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+
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+ /**
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+ * Determine whether *the app* has been granted external storage permissions depending on SDK.
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+ *
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+ * @return `true` if app has the permission, or `false` if not.
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+ */
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+ @JvmStatic
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+ fun checkExternalStoragePermission(context: Context): Boolean =
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+ ContextCompat.checkSelfPermission(context, getExternalStoragePermission()) == PackageManager.PERMISSION_GRANTED
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+
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+ /**
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+ * Request relevant external storage permission depending on SDK.
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+ *
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+ * @param activity The target activity.
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+ */
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+ @JvmStatic
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+ fun requestExternalStoragePermission(activity: Activity) {
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+ ActivityCompat.requestPermissions(
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+ activity, arrayOf(getExternalStoragePermission()),
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+ PERMISSIONS_EXTERNAL_STORAGE
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+ )
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+ }
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+
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+ /**
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+ * request camera permission.
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+ *
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+ * @param activity The target activity.
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+ */
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+ @JvmStatic
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+ fun requestCameraPermission(activity: Activity) {
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+ ActivityCompat.requestPermissions(
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+ activity, arrayOf(Manifest.permission.CAMERA),
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+ PERMISSIONS_CAMERA
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+ )
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+ }
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+}
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Álvaro Brey Vilas