Ask storage permissions only when using external volumes

app/src/main/java/sushi/hardcore/droidfs/BaseActivity.kt

@@ -12,15 +12,15 @@ open class BaseActivity: CyaneaAppCompatActivity() {
     protected lateinit var sharedPrefs: SharedPreferences
     protected var isRecreating = false
     override fun onCreate(savedInstanceState: Bundle?) {
+        val themeColor = ThemeColor.getThemeColor(this)
+        if (cyanea.accent != themeColor){
+            changeThemeColor(themeColor)
+        }
         super.onCreate(savedInstanceState)
         sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this)
         if (!sharedPrefs.getBoolean("usf_screenshot", false)){
             window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)
         }
-        val themeColor = ThemeColor.getThemeColor(this)
-        if (cyanea.accent != themeColor){
-            changeThemeColor(themeColor)
-        }
     }
     fun changeThemeColor(themeColor: Int? = null){
         val accentColor = themeColor ?: ThemeColor.getThemeColor(this)

app/src/main/java/sushi/hardcore/droidfs/ChangePasswordActivity.kt

@@ -78,7 +78,7 @@ class ChangePasswordActivity : VolumeActionActivity() {
     }
 
     fun pickDirectory(view: View?) {
-        safePickDirectory()
+        askPermissionThenPickDirectory()
     }
 
     override fun onDirectoryPicked(uri: Uri) {

app/src/main/java/sushi/hardcore/droidfs/CreateActivity.kt

@@ -42,7 +42,7 @@ class CreateActivity : VolumeActionActivity() {
     }
 
     fun pickDirectory(view: View?) {
-        safePickDirectory()
+        askPermissionThenPickDirectory()
     }
 
     override fun onDirectoryPicked(uri: Uri) {

app/src/main/java/sushi/hardcore/droidfs/MainActivity.kt

@@ -1,64 +1,19 @@
 package sushi.hardcore.droidfs
 
-import android.Manifest
 import android.content.Intent
-import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
-import android.os.Environment
+import android.view.Menu
-import android.util.DisplayMetrics
+import android.view.MenuItem
-import android.view.*
+import android.view.View
-import androidx.core.content.ContextCompat
-import com.bumptech.glide.Glide
-import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.toolbar.*
 import sushi.hardcore.droidfs.widgets.ColoredAlertDialogBuilder
 
 class MainActivity : BaseActivity() {
-    companion object {
-        private const val STORAGE_PERMISSIONS_REQUEST = 1
-    }
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
         setSupportActionBar(toolbar)
         if (!isRecreating) {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-                if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) +
-                    ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
-                    != PackageManager.PERMISSION_GRANTED) {
-                    requestPermissions(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE), STORAGE_PERMISSIONS_REQUEST)
-                } else {
-                    onStoragePermissionGranted()
-                }
-            } else {
-                onStoragePermissionGranted()
-            }
-        }
-    }
-
-    private fun onStoragePermissionGranted(){
-        if (checkStorageAvailability()){
-            checkFirstOpening()
-        }
-    }
-
-    private fun checkStorageAvailability(): Boolean {
-        val state = Environment.getExternalStorageState()
-        val storageAvailable = Environment.MEDIA_MOUNTED == state || Environment.MEDIA_MOUNTED_READ_ONLY == state
-        return if (!storageAvailable) {
-            ColoredAlertDialogBuilder(this)
-                .setTitle(R.string.storage_unavailable)
-                .setMessage(R.string.storage_unavailable_msg)
-                .setCancelable(false)
-                .setPositiveButton(R.string.ok) { _, _ -> finish() }.show()
-            false
-        } else {
-            true
-        }
-    }
-
-    private fun checkFirstOpening() {
             if (sharedPrefs.getBoolean("applicationFirstOpening", true)){
                 ColoredAlertDialogBuilder(this)
                     .setTitle(R.string.warning)
@@ -74,21 +29,6 @@ class MainActivity : BaseActivity() {
                     .show()
             }
         }
-
-    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
-        when (requestCode) {
-            STORAGE_PERMISSIONS_REQUEST -> if (grantResults.size == 2) {
-                if (grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != PackageManager.PERMISSION_GRANTED) {
-                    ColoredAlertDialogBuilder(this)
-                         .setTitle(R.string.storage_perm_denied)
-                         .setMessage(R.string.storage_perm_denied_msg)
-                         .setCancelable(false)
-                         .setPositiveButton(R.string.ok) { _, _ -> finish() }.show()
-                } else {
-                    onStoragePermissionGranted()
-                }
-            }
-        }
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {

app/src/main/java/sushi/hardcore/droidfs/OpenActivity.kt

@@ -107,8 +107,11 @@ class OpenActivity : VolumeActionActivity() {
     }
 
     fun pickDirectory(view: View?) {
+        askPermissionThenPickDirectory()
+    }
+
+    override fun onPickingDirectory() {
         isStartingActivity = true
-        safePickDirectory()
     }
 
     override fun onDirectoryPicked(uri: Uri) {
@@ -253,8 +256,8 @@ class OpenActivity : VolumeActionActivity() {
         isFinishingIntentionally = true
     }
 
-    override fun onPause() {
+    override fun onStop() {
-        super.onPause()
+        super.onStop()
         if (intent.action == "pick"){
             if (isStartingActivity) {
                 isStartingActivity = false

app/src/main/java/sushi/hardcore/droidfs/VolumeActionActivity.kt

@@ -1,8 +1,10 @@
 package sushi.hardcore.droidfs
 
+import android.Manifest
 import android.app.KeyguardManager
 import android.content.ActivityNotFoundException
 import android.content.Context
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.security.keystore.KeyGenParameterSpec
@@ -50,16 +52,32 @@ abstract class VolumeActionActivity : BaseActivity() {
     private lateinit var originalHiddenVolumeSectionLayoutParams: LinearLayout.LayoutParams
     private lateinit var originalNormalVolumeSectionLayoutParams: LinearLayout.LayoutParams
     companion object {
+        private const val STORAGE_PERMISSIONS_REQUEST = 0
         private const val ANDROID_KEY_STORE = "AndroidKeyStore"
         private const val KEY_ALIAS = "Hash Key"
         private const val KEY_SIZE = 256
         private const val GCM_TAG_LEN = 128
     }
 
+    protected open fun onPickingDirectory() {}
     protected abstract fun onDirectoryPicked(uri: Uri)
 
-    protected fun safePickDirectory() {
+    protected fun askPermissionThenPickDirectory() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) +
+                ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+                requestPermissions(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE), STORAGE_PERMISSIONS_REQUEST)
+            } else {
+                safePickDirectory()
+            }
+        } else {
+            safePickDirectory()
+        }
+    }
+
+    private fun safePickDirectory() {
         try {
+            onPickingDirectory()
             pickDirectory.launch(null)
         } catch (e: ActivityNotFoundException) {
             ColoredAlertDialogBuilder(this)
@@ -70,6 +88,24 @@ abstract class VolumeActionActivity : BaseActivity() {
         }
     }
 
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        when (requestCode) {
+            STORAGE_PERMISSIONS_REQUEST -> if (grantResults.size == 2) {
+                if (grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != PackageManager.PERMISSION_GRANTED) {
+                    ColoredAlertDialogBuilder(this)
+                        .setTitle(R.string.storage_perm_denied)
+                        .setMessage(R.string.storage_perm_denied_msg)
+                        .setCancelable(false)
+                        .setPositiveButton(R.string.ok, null)
+                        .show()
+                } else {
+                    safePickDirectory()
+                }
+            }
+        }
+    }
+
     protected fun setupFingerprintStuff(){
         originalHiddenVolumeSectionLayoutParams = hidden_volume_section.layoutParams as LinearLayout.LayoutParams
         originalNormalVolumeSectionLayoutParams = normal_volume_section.layoutParams as LinearLayout.LayoutParams