Update

afollestad · afollestad · commit 1d56cf49c59a · 2015-12-18T12:12:53.000-06:00
diff --git a/sample/src/main/java/com/afollestad/materialdialogssample/MainActivity.java b/sample/src/main/java/com/afollestad/materialdialogssample/MainActivity.java
@@ -1,6 +1,7 @@
 package com.afollestad.materialdialogssample;
 
 import android.Manifest;
+import android.annotation.TargetApi;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
@@ -581,6 +582,7 @@ public void onDismiss(DialogInterface dialog) {
                 .show();
     }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
     @OnClick(R.id.file_chooser)
     public void showFileChooser() {
         if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) !=
@@ -597,6 +599,7 @@ public void onFileSelection(@NonNull File file) {
         showToast(file.getAbsolutePath());
     }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
     @OnClick(R.id.folder_chooser)
     public void showFolderChooser() {
         if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) !=
