1 files changed, 55 insertions, 0 deletions
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;
+    }
+
+}