From 6a4f804228c5ce93ccc48a2e2725d32d83a5bd8c Mon Sep 17 00:00:00 2001
From: Roman Birg <roman@cyngn.com>
Date: Mon, 11 Jan 2016 11:16:36 -0800
Subject: PhotoPhase: ask for runtime permissions

Ref: CYNGNOS-1555

Change-Id: I7cc351fca1085ec29823b12d3959b83142eac4cb
Signed-off-by: Roman Birg <roman@cyngn.com>
---
 .../wallpapers/photophase/PhotoPhaseWallpaper.java | 10 ++++
 .../photophase/RequestPermissionsActivity.java     | 55 ++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 src/org/cyanogenmod/wallpapers/photophase/RequestPermissionsActivity.java

(limited to 'src/org/cyanogenmod/wallpapers')

diff --git a/src/org/cyanogenmod/wallpapers/photophase/PhotoPhaseWallpaper.java b/src/org/cyanogenmod/wallpapers/photophase/PhotoPhaseWallpaper.java
index ecb0872..2c53709 100644
--- a/src/org/cyanogenmod/wallpapers/photophase/PhotoPhaseWallpaper.java
+++ b/src/org/cyanogenmod/wallpapers/photophase/PhotoPhaseWallpaper.java
@@ -19,6 +19,7 @@ package org.cyanogenmod.wallpapers.photophase;
 import android.app.ActivityManager;
 import android.app.WallpaperManager;
 import android.content.Context;
+import android.content.Intent;
 import android.opengl.GLSurfaceView;
 import android.opengl.GLSurfaceView.Renderer;
 import android.os.Bundle;
@@ -94,10 +95,19 @@ public class PhotoPhaseWallpaper
      */
     @Override
     public Engine onCreateEngine() {
+        checkPermission();
         mEngine = new PhotoPhaseWallpaperEngine(this);
         return mEngine;
     }
 
+    private void checkPermission() {
+        if (!RequestPermissionsActivity.hasRequestedPermissions(this)) {
+            startActivity(new Intent(Intent.ACTION_MAIN)
+                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                    .setClass(this, RequestPermissionsActivity.class));
+        }
+    }
+
     /**
      * A wallpaper engine implementation using GLES.
      */
diff --git a/src/org/cyanogenmod/wallpapers/photophase/RequestPermissionsActivity.java b/src/org/cyanogenmod/wallpapers/photophase/RequestPermissionsActivity.java
new file mode 100644
index 0000000..5999d10
--- /dev/null
+++ b/src/org/cyanogenmod/wallpapers/photophase/RequestPermissionsActivity.java
@@ -0,0 +1,55 @@
+package org.cyanogenmod.wallpapers.photophase;
+
+import android.Manifest;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.Activity;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.widget.Toast;
+
+public class RequestPermissionsActivity extends Activity {
+
+    public static final int REQUEST_STORAGE_PERMISSION = 1;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (!hasRequestedPermissions(this)) {
+            requestPermissions(new String[] {Manifest.permission.READ_EXTERNAL_STORAGE},
+                    REQUEST_STORAGE_PERMISSION);
+        } else {
+            setResult(Activity.RESULT_OK);
+            finish();
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
+            @NonNull int[] grantResults) {
+        switch (requestCode) {
+            case REQUEST_STORAGE_PERMISSION: {
+                // If request is cancelled, the result arrays are empty.
+                if (grantResults.length > 0
+                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                    setResult(Activity.RESULT_OK);
+                } else {
+                    Toast.makeText(this, R.string.runtime_permission_warning, Toast.LENGTH_SHORT)
+                            .show();
+                    setResult(Activity.RESULT_CANCELED);
+                }
+                finish();
+                return;
+            }
+        }
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+    }
+
+    public static boolean hasRequestedPermissions(Context context) {
+        return context.checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) ==
+                PackageManager.PERMISSION_GRANTED;
+    }
+
+}
-- 
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